From 0513102b329864c0efc93d8f7e2411eee2252f20 Mon Sep 17 00:00:00 2001
From: greggman <github@greggman.com>
Date: Mon, 23 Sep 2024 22:08:54 +0000
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---
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             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D Geometry - Lathe]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-geometry-lathe.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-geometry-lathe.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Directional Lighting]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-directional.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-directional.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Normal Mapping]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-normal-mapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-normal-mapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Point Lighting]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-point.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-point.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Spot Lighting]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-spot.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-spot.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Orthographic 3D]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-orthographic.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-orthographic.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D Perspective Correct Texture Mapping]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-perspective-correct-texturemapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-perspective-correct-texturemapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D Perspective]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-perspective.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-perspective.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Textures]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 and Alpha]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-and-alpha.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-and-alpha.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Animation]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-animation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-animation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Anti-Patterns]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-anti-patterns.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-anti-patterns.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Attributes]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-attributes.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-attributes.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Boilerplate]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-boilerplate.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-boilerplate.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Cross Origin Images]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-cors-permission.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-cors-permission.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Cross Platform Issues]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-cross-platform-issues.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-cross-platform-issues.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Cubemaps]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-cube-maps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-cube-maps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Data Textures]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-data-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-data-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Drawing Multiple Things]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-drawing-multiple-things.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-drawing-multiple-things.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Drawing Without Data]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-drawing-without-data.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-drawing-without-data.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Environment Maps (reflections)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-environment-maps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-environment-maps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Fog]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-fog.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-fog.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Framebuffers]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-framebuffers.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-framebuffers.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Fundamentals]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-getting-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-getting-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 GPGPU]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-gpgpu.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-gpgpu.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 How It Works]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-how-it-works.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-how-it-works.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Image Processing Continued]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-image-processing-continued.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-image-processing-continued.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Image Processing]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-image-processing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-image-processing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Indexed Vertices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-indexed-vertices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-indexed-vertices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Optimization - Instanced Drawing]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-instanced-drawing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-instanced-drawing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Less Code, More Fun]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-less-code-more-fun.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-less-code-more-fun.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Load Obj with Mtl]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-load-obj-w-mtl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-load-obj-w-mtl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Load Obj]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-load-obj.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-load-obj.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Matrix Naming]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-matrix-naming.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-matrix-naming.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Matrices vs Math Matrices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-matrix-vs-math.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-matrix-vs-math.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Multiple Views, Multiple Canvases]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-multiple-views.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-multiple-views.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Picking]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-picking.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-picking.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Planar and Perspective Projection Mapping]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-planar-projection-mapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-planar-projection-mapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Points, Lines, and Triangles]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-points-lines-triangles.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-points-lines-triangles.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Precision Issues]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-precision-issues.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-precision-issues.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Pulling Vertices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-pulling-vertices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-pulling-vertices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[A simple way to show the load on the GPU's vertex and fragment processing?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-a-simple-way-to-show-the-load-on-the-gpu-s-vertex-and-fragment-processing-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-a-simple-way-to-show-the-load-on-the-gpu-s-vertex-and-fragment-processing-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Accessing textures by pixel coordinate in WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-accessing-textures-by-pixel-coordinate-in-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-accessing-textures-by-pixel-coordinate-in-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Apply a displacement map and specular map]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-apply-a-displacement-map-and-specular-map.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-apply-a-displacement-map-and-specular-map.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Can anyone explain what this GLSL fragment shader is doing?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-can-anyone-explain-what-this-glsl-fragment-shader-is-doing-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-can-anyone-explain-what-this-glsl-fragment-shader-is-doing-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Can I mute the warning about vertex attrib 0 being disabled?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-can-i-mute-the-warning-about-vertex-attrib-0-being-disabled-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-can-i-mute-the-warning-about-vertex-attrib-0-being-disabled-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Create image warping effect in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-create-image-warping-effect-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-create-image-warping-effect-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Creating a smudge/liquify effect]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-creating-a-smudge-liquify-effect.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-creating-a-smudge-liquify-effect.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Determine min/max values for the entire image]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-determine-min-max-values-for-the-entire-image.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-determine-min-max-values-for-the-entire-image.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Don't blend a polygon that crosses itself]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-don-t-blend-a-polygon-that-crosses-itself.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-don-t-blend-a-polygon-that-crosses-itself.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing 2D image with depth map to achieve pseudo-3D effect]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-2d-image-with-depth-map-to-achieve-pseudo-3d-effect.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-2d-image-with-depth-map-to-achieve-pseudo-3d-effect.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing a heightmap]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-a-heightmap.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-a-heightmap.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing layers with different points]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-layers-with-different-points.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-layers-with-different-points.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing Many different models in a single draw call]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-many-different-models-in-a-single-draw-call.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-many-different-models-in-a-single-draw-call.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing textured sprites with instanced drawing]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-textured-sprites-with-instanced-drawing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-textured-sprites-with-instanced-drawing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Efficient particle system in javascript? (WebGL)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-efficient-particle-system-in-javascript---webgl-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-efficient-particle-system-in-javascript---webgl-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Emulating palette based graphics in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-emulating-palette-based-graphics-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-emulating-palette-based-graphics-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[FPS-like camera movement with basic matrix transformations]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-fps-like-camera-movement-with-basic-matrix-transformations.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-fps-like-camera-movement-with-basic-matrix-transformations.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Get the size of a point for collision checking]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-get-the-size-of-a-point-for-collision-checking.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-get-the-size-of-a-point-for-collision-checking.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[GLSL shader to support coloring and texturing]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-glsl-shader-to-support-coloring-and-texturing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-glsl-shader-to-support-coloring-and-texturing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How can I compute for 500 points which of 1000 line segments is nearest to each point?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-compute-for-500-points-which-of-1000-line-segments-is-nearest-to-each-point-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-compute-for-500-points-which-of-1000-line-segments-is-nearest-to-each-point-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How can I create a 16bit historgram of 16bit data]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-create-a-16bit-historgram-of-16bit-data.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-create-a-16bit-historgram-of-16bit-data.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How can I get all the uniforms and uniformBlocks]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-get-all-the-uniforms-and-uniformblocks.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-get-all-the-uniforms-and-uniformblocks.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How can I move the perspective vanishing point from the center of the canvas?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-move-the-perspective-vanishing-point-from-the-center-of-the-canvas-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-move-the-perspective-vanishing-point-from-the-center-of-the-canvas-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to Achieve Moving Line with Trail Effects]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-achieve-moving-line-with-trail-effects.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-achieve-moving-line-with-trail-effects.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to bind an array of textures to a WebGL shader uniform?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-bind-an-array-of-textures-to-a-webgl-shader-uniform-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-bind-an-array-of-textures-to-a-webgl-shader-uniform-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to blend colors across 2 triangles]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-blend-colors-across-2-triangles.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-blend-colors-across-2-triangles.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to control the color between vertices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-control-the-color-between-vertices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-control-the-color-between-vertices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to create a torus]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-create-a-torus.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-create-a-torus.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to detect clipped triangles in the framgment shader]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-detect-clipped-triangles-in-the-framgment-shader.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-detect-clipped-triangles-in-the-framgment-shader.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to determine the average brightness in a scene?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-determine-the-average-brightness-in-a-scene-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-determine-the-average-brightness-in-a-scene-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to draw correctly textured trapezoid polygons]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-draw-correctly-textured-trapezoid-polygons.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-draw-correctly-textured-trapezoid-polygons.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to fade the drawing buffer]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-fade-the-drawing-buffer.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-fade-the-drawing-buffer.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to get audio data into a shader]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-audio-data-into-a-shader.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-audio-data-into-a-shader.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to get code completion for WebGL in Visual Studio Code]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-code-completion-for-webgl-in-visual-studio-code.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-code-completion-for-webgl-in-visual-studio-code.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to get pixelize effect in webgl?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-pixelize-effect-in-webgl-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-pixelize-effect-in-webgl-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to get the 3d coordinates of a mouse click]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-the-3d-coordinates-of-a-mouse-click.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-the-3d-coordinates-of-a-mouse-click.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to implement zoom from mouse in 2D WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-implement-zoom-from-mouse-in-2d-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-implement-zoom-from-mouse-in-2d-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to import a heightmap in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-import-a-heightmap-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-import-a-heightmap-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to load images in the background with no jank]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-load-images-in-the-background-with-no-jank.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-load-images-in-the-background-with-no-jank.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to make a smudge brush tool]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-make-a-smudge-brush-tool.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-make-a-smudge-brush-tool.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to make WebGL canvas transparent]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-make-webgl-canvas-transparent.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-make-webgl-canvas-transparent.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to optimize rendering a UI]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-optimize-rendering-a-ui.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-optimize-rendering-a-ui.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to prevent texture bleeding with a texture atlas]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-prevent-texture-bleeding-with-a-texture-atlas.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-prevent-texture-bleeding-with-a-texture-atlas.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to process particle positions]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-process-particle-positions.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-process-particle-positions.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to read a single component with readPixels]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-read-a-single-component-with-readpixels.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-read-a-single-component-with-readpixels.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to render large scale images like 32000x32000]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-render-large-scale-images-like-32000x32000.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-render-large-scale-images-like-32000x32000.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to simulate a 3D texture in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-simulate-a-3d-texture-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-simulate-a-3d-texture-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to support both WebGL and WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-support-both-webgl-and-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-support-both-webgl-and-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to tell if an image has an alpha channel]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-tell-if-an-image-has-an-alpha-channel.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-tell-if-an-image-has-an-alpha-channel.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use a 2d sprite's transparency as a mask]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-a-2d-sprite-s-transparency-as-a-mask.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-a-2d-sprite-s-transparency-as-a-mask.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use texture, and color also in WebGL?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-texture--and-color-also-in-webgl-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-texture--and-color-also-in-webgl-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use textures as data]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-textures-as-data.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-textures-as-data.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use the stencil buffer]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-the-stencil-buffer.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-the-stencil-buffer.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to write a web-based music visualizer]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-write-a-web-based-music-visualizer.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-write-a-web-based-music-visualizer.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[I get invalid type error when calling readPixels]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-i-get-invalid-type-error-when-calling-readpixels.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-i-get-invalid-type-error-when-calling-readpixels.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Is it possible to measure rendering time in webgl using gl.finish()?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-is-it-possible-to-measure-rendering-time-in-webgl-using-gl-finish---.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-is-it-possible-to-measure-rendering-time-in-webgl-using-gl-finish---.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Is there the notion of a generalized vertex and fragment shader?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-is-there-the-notion-of-a-generalized-vertex-and-fragment-shader-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-is-there-the-notion-of-a-generalized-vertex-and-fragment-shader-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Optimize drawing lots of large images]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-optimize-drawing-lots-of-large-images.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-optimize-drawing-lots-of-large-images.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Passing in per sprite alpha values when batching]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-passing-in-per-sprite-alpha-values-when-batching.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-passing-in-per-sprite-alpha-values-when-batching.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Pure WebGL Dashed Line]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-pure-webgl-dashed-line.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-pure-webgl-dashed-line.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Recording FPS in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-recording-fps-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-recording-fps-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Rendering slowly over time]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-rendering-slowly-over-time.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-rendering-slowly-over-time.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Setting the values of a struct array from JS to GLSL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-setting-the-values-of-a-struct-array-from-js-to-glsl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-setting-the-values-of-a-struct-array-from-js-to-glsl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Show a night view vs a day view on a 3D Earth sphere]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-show-a-night-view-vs-a-day-view-on-a-3d-earth-sphere.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-show-a-night-view-vs-a-day-view-on-a-3d-earth-sphere.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Sorting and optimizing instanced rendering]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-sorting-and-optimizing-instanced-rendering.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-sorting-and-optimizing-instanced-rendering.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Tex image TEXTURE_2D level 0 is incurring lazy initialization]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-tex-image-texture_2d-level-0-is-incurring-lazy-initialization.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-tex-image-texture_2d-level-0-is-incurring-lazy-initialization.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[The fastest way to draw many circles]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-the-fastest-way-to-draw-many-circles.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-the-fastest-way-to-draw-many-circles.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL 2D tilemaps]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-webgl-2d-tilemaps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-webgl-2d-tilemaps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL Droste effect]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-webgl-droste-effect.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-webgl-droste-effect.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[What is the local origin of a 3D model?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-what-is-the-local-origin-of-a-3d-model-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-what-is-the-local-origin-of-a-3d-model-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[When to choose highp, mediump, lowp in shaders]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-when-to-choose-highp--mediump--lowp-in-shaders.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-when-to-choose-highp--mediump--lowp-in-shaders.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Working around gl_PointSize limitations webGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-working-around-gl_pointsize-limitations-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-working-around-gl_pointsize-limitations-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Zooming to and stopping at object in a scene in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Questions and Answers]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 readPixels]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-readpixels.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-readpixels.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[References]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-references.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-references.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Rendering to a Texture]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-render-to-texture.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-render-to-texture.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Resizing the Canvas.]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-resizing-the-canvas.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-resizing-the-canvas.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Scene Graph]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-scene-graph.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-scene-graph.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Setup and Installation]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-setup-and-installation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-setup-and-installation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Shaders and GLSL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-shaders-and-glsl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-shaders-and-glsl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Shadertoy]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-shadertoy.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-shadertoy.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Shadows Continued]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-shadows-continued.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-shadows-continued.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Shadows]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-shadows.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-shadows.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Skinning]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 SkyBox]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-skybox.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-skybox.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Smallest Programs]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-smallest-programs.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-smallest-programs.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Sprites]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-sprites.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-sprites.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 State Diagram]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-state-diagram.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-state-diagram.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Text - Canvas 2D]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-text-canvas2d.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-text-canvas2d.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Text - Using a Glyph Texture]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-text-glyphs.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-text-glyphs.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Text - HTML]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-text-html.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-text-html.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Text - Textures]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-text-texture.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-text-texture.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Texture Units]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-texture-units.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-texture-units.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Tips]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-tips.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-tips.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Visualizing the Camera]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-visualizing-the-camera.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-visualizing-the-camera.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Differences from WebGLFundamentals.org]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl1-to-webgl2-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl1-to-webgl2-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 from WebGL1]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl1-to-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl1-to-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 What's New]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl2-whats-new.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl2-whats-new.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
 </feed>
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diff --git a/contributors.js b/contributors.js
index 22fd46681..c221f4564 100644
--- a/contributors.js
+++ b/contributors.js
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diff --git a/package-lock.json b/package-lock.json
index 6fcff1f1e..78531da7e 100644
--- a/package-lock.json
+++ b/package-lock.json
@@ -38,22 +38,31 @@
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+      "resolved": "https://registry.npmjs.org/@babel/helper-validator-identifier/-/helper-validator-identifier-7.24.7.tgz",
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+      "version": "7.24.7",
+      "resolved": "https://registry.npmjs.org/@babel/highlight/-/highlight-7.24.7.tgz",
+      "integrity": "sha512-EStJpq4OuY8xYfhGVXngigBJRWxftKX9ksiGDnmlY3o7B/V7KIAc9X4oiK87uPJSc/vs5L869bem5fhZa8caZw==",
       "dev": true,
       "dependencies": {
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+        "@babel/helper-validator-identifier": "^7.24.7",
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         "js-tokens": "^4.0.0",
         "picocolors": "^1.0.0"
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-      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.24.5.tgz",
-      "integrity": "sha512-EOv5IK8arwh3LI47dz1b0tKUb/1uhHAnHJOrjgtQMIpu1uXd9mlFrJg9IUgGUgZ41Ch0K8REPTYpO7B76b4vJg==",
+      "version": "7.25.6",
+      "resolved": "https://registry.npmjs.org/@babel/parser/-/parser-7.25.6.tgz",
+      "integrity": "sha512-trGdfBdbD0l1ZPmcJ83eNxB9rbEax4ALFTF7fN386TMYbeCQbyme5cOEXQhbGXKebwGaB/J52w1mrklMcbgy6Q==",
       "dev": true,
+      "dependencies": {
+        "@babel/types": "^7.25.6"
+      },
       "bin": {
         "parser": "bin/babel-parser.js"
       },
@@ -145,6 +157,20 @@
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       }
     },
+    "node_modules/@babel/types": {
+      "version": "7.25.6",
+      "resolved": "https://registry.npmjs.org/@babel/types/-/types-7.25.6.tgz",
+      "integrity": "sha512-/l42B1qxpG6RdfYf343Uw1vmDjeNhneUXtzhojE7pDgfpEypmRhI6j1kr17XCVv4Cgl9HdAiQY2x0GwKm7rWCw==",
+      "dev": true,
+      "dependencies": {
+        "@babel/helper-string-parser": "^7.24.8",
+        "@babel/helper-validator-identifier": "^7.24.7",
+        "to-fast-properties": "^2.0.0"
+      },
+      "engines": {
+        "node": ">=6.9.0"
+      }
+    },
     "node_modules/@eslint-community/eslint-utils": {
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       "resolved": "https://registry.npmjs.org/@eslint-community/eslint-utils/-/eslint-utils-4.4.0.tgz",
@@ -175,19 +201,44 @@
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-      "resolved": "https://registry.npmjs.org/@eslint-community/regexpp/-/regexpp-4.10.0.tgz",
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+      "version": "4.11.1",
+      "resolved": "https://registry.npmjs.org/@eslint-community/regexpp/-/regexpp-4.11.1.tgz",
+      "integrity": "sha512-m4DVN9ZqskZoLU5GlWZadwDnYo3vAEydiUayB9widCl9ffWx2IvPnp6n3on5rJmziJSw9Bv+Z3ChDVdMwXCY8Q==",
       "dev": true,
       "peer": true,
       "engines": {
         "node": "^12.0.0 || ^14.0.0 || >=16.0.0"
       }
     },
+    "node_modules/@eslint/config-array": {
+      "version": "0.18.0",
+      "resolved": "https://registry.npmjs.org/@eslint/config-array/-/config-array-0.18.0.tgz",
+      "integrity": "sha512-fTxvnS1sRMu3+JjXwJG0j/i4RT9u4qJ+lqS/yCGap4lH4zZGzQ7tu+xZqQmcMZq5OBZDL4QRxQzRjkWcGt8IVw==",
+      "dev": true,
+      "peer": true,
+      "dependencies": {
+        "@eslint/object-schema": "^2.1.4",
+        "debug": "^4.3.1",
+        "minimatch": "^3.1.2"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
+    "node_modules/@eslint/core": {
+      "version": "0.6.0",
+      "resolved": "https://registry.npmjs.org/@eslint/core/-/core-0.6.0.tgz",
+      "integrity": "sha512-8I2Q8ykA4J0x0o7cg67FPVnehcqWTBehu/lmY+bolPFHGjh49YzGBMXTvpqVgEbBdvNCSxj6iFgiIyHzf03lzg==",
+      "dev": true,
+      "peer": true,
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
     "node_modules/@eslint/eslintrc": {
-      "version": "3.0.2",
-      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-3.0.2.tgz",
-      "integrity": "sha512-wV19ZEGEMAC1eHgrS7UQPqsdEiCIbTKTasEfcXAigzoXICcqZSjBZEHlZwNVvKg6UBCjSlos84XiLqsRJnIcIg==",
+      "version": "3.1.0",
+      "resolved": "https://registry.npmjs.org/@eslint/eslintrc/-/eslintrc-3.1.0.tgz",
+      "integrity": "sha512-4Bfj15dVJdoy3RfZmmo86RK1Fwzn6SstsvK9JS+BaVKqC6QQQQyXekNaC+g+LKNgkQ+2VhGAzm6hO40AhMR3zQ==",
       "dev": true,
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@@ -209,15 +260,38 @@
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-      "resolved": "https://registry.npmjs.org/@eslint/js/-/js-9.1.1.tgz",
-      "integrity": "sha512-5WoDz3Y19Bg2BnErkZTp0en+c/i9PvgFS7MBe1+m60HjFr0hrphlAGp4yzI7pxpt4xShln4ZyYp4neJm8hmOkQ==",
+      "version": "9.11.1",
+      "resolved": "https://registry.npmjs.org/@eslint/js/-/js-9.11.1.tgz",
+      "integrity": "sha512-/qu+TWz8WwPWc7/HcIJKi+c+MOm46GdVaSlTTQcaqaL53+GsoA6MxWp5PtTx48qbSP7ylM1Kn7nhvkugfJvRSA==",
+      "dev": true,
+      "peer": true,
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
+      }
+    },
+    "node_modules/@eslint/object-schema": {
+      "version": "2.1.4",
+      "resolved": "https://registry.npmjs.org/@eslint/object-schema/-/object-schema-2.1.4.tgz",
+      "integrity": "sha512-BsWiH1yFGjXXS2yvrf5LyuoSIIbPrGUWob917o+BTKuZ7qJdxX8aJLRxs1fS9n6r7vESrq1OUqb68dANcFXuQQ==",
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       "peer": true,
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         "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
       }
     },
+    "node_modules/@eslint/plugin-kit": {
+      "version": "0.2.0",
+      "resolved": "https://registry.npmjs.org/@eslint/plugin-kit/-/plugin-kit-0.2.0.tgz",
+      "integrity": "sha512-vH9PiIMMwvhCx31Af3HiGzsVNULDbyVkHXwlemn/B0TFj/00ho3y55efXrUZTfQipxoHC5u4xq6zblww1zm1Ig==",
+      "dev": true,
+      "peer": true,
+      "dependencies": {
+        "levn": "^0.4.1"
+      },
+      "engines": {
+        "node": "^18.18.0 || ^20.9.0 || >=21.1.0"
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@@ -11022,15 +11201,15 @@
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@@ -11109,6 +11288,12 @@
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@@ -11218,9 +11403,9 @@
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@@ -11234,9 +11419,9 @@
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@@ -11444,12 +11629,6 @@
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diff --git a/webgl/lessons/atom.xml b/webgl/lessons/atom.xml
index 0d596545f..1416a2070 100644
--- a/webgl/lessons/atom.xml
+++ b/webgl/lessons/atom.xml
@@ -2,7 +2,7 @@
 <feed xmlns="http://www.w3.org/2005/Atom">
     <id></id>
     <title>WebGL2 Fundamentals</title>
-    <updated>2024-05-03T07:09:01.000Z</updated>
+    <updated>2024-09-23T22:07:20.000Z</updated>
     <generator>https://github.com/jpmonette/feed</generator>
     <author>
         <name>WebGL2Fundamentals Contributors</name>
@@ -16,1799 +16,1799 @@
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-2-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-2-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Implementing DrawImage]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-2d-drawimage.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-2d-drawimage.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 2D Matrices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-2d-matrices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-2d-matrices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Implementing A Matrix Stack]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-2d-matrix-stack.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-2d-matrix-stack.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 2D Rotation]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-2d-rotation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-2d-rotation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 2D Scale]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-2d-scale.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-2d-scale.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 2D Translation]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-2d-translation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-2d-translation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Rasterization vs 3D libraries]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-2d-vs-3d-library.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-2d-vs-3d-library.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Cameras]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-camera.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-camera.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D Geometry - Lathe]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-geometry-lathe.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-geometry-lathe.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Directional Lighting]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-directional.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-directional.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Normal Mapping]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-normal-mapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-normal-mapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Point Lighting]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-point.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-point.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Spot Lighting]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-spot.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-lighting-spot.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Orthographic 3D]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-orthographic.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-orthographic.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D Perspective Correct Texture Mapping]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-perspective-correct-texturemapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-perspective-correct-texturemapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D Perspective]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-perspective.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-perspective.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Textures]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-3d-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-3d-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 and Alpha]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-and-alpha.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-and-alpha.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Animation]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-animation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-animation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Anti-Patterns]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-anti-patterns.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-anti-patterns.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Attributes]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-attributes.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-attributes.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Boilerplate]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-boilerplate.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-boilerplate.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Cross Origin Images]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-cors-permission.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-cors-permission.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Cross Platform Issues]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-cross-platform-issues.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-cross-platform-issues.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Cubemaps]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-cube-maps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-cube-maps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - Data Textures]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-data-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-data-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Drawing Multiple Things]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-drawing-multiple-things.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-drawing-multiple-things.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Drawing Without Data]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-drawing-without-data.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-drawing-without-data.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Environment Maps (reflections)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-environment-maps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-environment-maps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Fog]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-fog.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-fog.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Framebuffers]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-framebuffers.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-framebuffers.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Fundamentals]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-getting-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-getting-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 GPGPU]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-gpgpu.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-gpgpu.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 How It Works]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-how-it-works.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-how-it-works.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Image Processing Continued]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-image-processing-continued.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-image-processing-continued.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Image Processing]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-image-processing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-image-processing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Indexed Vertices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-indexed-vertices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-indexed-vertices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Optimization - Instanced Drawing]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-instanced-drawing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-instanced-drawing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Less Code, More Fun]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-less-code-more-fun.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-less-code-more-fun.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Load Obj with Mtl]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-load-obj-w-mtl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-load-obj-w-mtl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Load Obj]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-load-obj.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-load-obj.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Matrix Naming]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-matrix-naming.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-matrix-naming.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Matrices vs Math Matrices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-matrix-vs-math.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-matrix-vs-math.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Multiple Views, Multiple Canvases]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-multiple-views.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-multiple-views.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Picking]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-picking.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-picking.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Planar and Perspective Projection Mapping]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-planar-projection-mapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-planar-projection-mapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Points, Lines, and Triangles]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-points-lines-triangles.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-points-lines-triangles.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Precision Issues]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-precision-issues.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-precision-issues.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Pulling Vertices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-pulling-vertices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-pulling-vertices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[A simple way to show the load on the GPU's vertex and fragment processing?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-a-simple-way-to-show-the-load-on-the-gpu-s-vertex-and-fragment-processing-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-a-simple-way-to-show-the-load-on-the-gpu-s-vertex-and-fragment-processing-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Accessing textures by pixel coordinate in WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-accessing-textures-by-pixel-coordinate-in-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-accessing-textures-by-pixel-coordinate-in-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Apply a displacement map and specular map]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-apply-a-displacement-map-and-specular-map.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-apply-a-displacement-map-and-specular-map.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Can anyone explain what this GLSL fragment shader is doing?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-can-anyone-explain-what-this-glsl-fragment-shader-is-doing-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-can-anyone-explain-what-this-glsl-fragment-shader-is-doing-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Can I mute the warning about vertex attrib 0 being disabled?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-can-i-mute-the-warning-about-vertex-attrib-0-being-disabled-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-can-i-mute-the-warning-about-vertex-attrib-0-being-disabled-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Create image warping effect in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-create-image-warping-effect-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-create-image-warping-effect-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Creating a smudge/liquify effect]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-creating-a-smudge-liquify-effect.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-creating-a-smudge-liquify-effect.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Determine min/max values for the entire image]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-determine-min-max-values-for-the-entire-image.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-determine-min-max-values-for-the-entire-image.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Don't blend a polygon that crosses itself]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-don-t-blend-a-polygon-that-crosses-itself.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-don-t-blend-a-polygon-that-crosses-itself.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing 2D image with depth map to achieve pseudo-3D effect]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-2d-image-with-depth-map-to-achieve-pseudo-3d-effect.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-2d-image-with-depth-map-to-achieve-pseudo-3d-effect.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing a heightmap]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-a-heightmap.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-a-heightmap.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing layers with different points]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-layers-with-different-points.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-layers-with-different-points.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing Many different models in a single draw call]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-many-different-models-in-a-single-draw-call.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-many-different-models-in-a-single-draw-call.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Drawing textured sprites with instanced drawing]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-textured-sprites-with-instanced-drawing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-drawing-textured-sprites-with-instanced-drawing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Efficient particle system in javascript? (WebGL)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-efficient-particle-system-in-javascript---webgl-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-efficient-particle-system-in-javascript---webgl-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Emulating palette based graphics in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-emulating-palette-based-graphics-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-emulating-palette-based-graphics-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[FPS-like camera movement with basic matrix transformations]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-fps-like-camera-movement-with-basic-matrix-transformations.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-fps-like-camera-movement-with-basic-matrix-transformations.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Get the size of a point for collision checking]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-get-the-size-of-a-point-for-collision-checking.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-get-the-size-of-a-point-for-collision-checking.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[GLSL shader to support coloring and texturing]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-glsl-shader-to-support-coloring-and-texturing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-glsl-shader-to-support-coloring-and-texturing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How can I compute for 500 points which of 1000 line segments is nearest to each point?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-compute-for-500-points-which-of-1000-line-segments-is-nearest-to-each-point-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-compute-for-500-points-which-of-1000-line-segments-is-nearest-to-each-point-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How can I create a 16bit historgram of 16bit data]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-create-a-16bit-historgram-of-16bit-data.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-create-a-16bit-historgram-of-16bit-data.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How can I get all the uniforms and uniformBlocks]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-get-all-the-uniforms-and-uniformblocks.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-get-all-the-uniforms-and-uniformblocks.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How can I move the perspective vanishing point from the center of the canvas?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-move-the-perspective-vanishing-point-from-the-center-of-the-canvas-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-can-i-move-the-perspective-vanishing-point-from-the-center-of-the-canvas-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to Achieve Moving Line with Trail Effects]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-achieve-moving-line-with-trail-effects.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-achieve-moving-line-with-trail-effects.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to bind an array of textures to a WebGL shader uniform?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-bind-an-array-of-textures-to-a-webgl-shader-uniform-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-bind-an-array-of-textures-to-a-webgl-shader-uniform-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to blend colors across 2 triangles]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-blend-colors-across-2-triangles.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-blend-colors-across-2-triangles.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to control the color between vertices]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-control-the-color-between-vertices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-control-the-color-between-vertices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to create a torus]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-create-a-torus.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-create-a-torus.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to detect clipped triangles in the framgment shader]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-detect-clipped-triangles-in-the-framgment-shader.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-detect-clipped-triangles-in-the-framgment-shader.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to determine the average brightness in a scene?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-determine-the-average-brightness-in-a-scene-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-determine-the-average-brightness-in-a-scene-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to draw correctly textured trapezoid polygons]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-draw-correctly-textured-trapezoid-polygons.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-draw-correctly-textured-trapezoid-polygons.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to fade the drawing buffer]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-fade-the-drawing-buffer.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-fade-the-drawing-buffer.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to get audio data into a shader]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-audio-data-into-a-shader.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-audio-data-into-a-shader.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to get code completion for WebGL in Visual Studio Code]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-code-completion-for-webgl-in-visual-studio-code.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-code-completion-for-webgl-in-visual-studio-code.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to get pixelize effect in webgl?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-pixelize-effect-in-webgl-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-pixelize-effect-in-webgl-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to get the 3d coordinates of a mouse click]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-the-3d-coordinates-of-a-mouse-click.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-get-the-3d-coordinates-of-a-mouse-click.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to implement zoom from mouse in 2D WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-implement-zoom-from-mouse-in-2d-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-implement-zoom-from-mouse-in-2d-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to import a heightmap in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-import-a-heightmap-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-import-a-heightmap-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to load images in the background with no jank]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-load-images-in-the-background-with-no-jank.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-load-images-in-the-background-with-no-jank.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to make a smudge brush tool]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-make-a-smudge-brush-tool.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-make-a-smudge-brush-tool.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to make WebGL canvas transparent]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-make-webgl-canvas-transparent.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-make-webgl-canvas-transparent.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to optimize rendering a UI]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-optimize-rendering-a-ui.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-optimize-rendering-a-ui.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to prevent texture bleeding with a texture atlas]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-prevent-texture-bleeding-with-a-texture-atlas.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-prevent-texture-bleeding-with-a-texture-atlas.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to process particle positions]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-process-particle-positions.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-process-particle-positions.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to read a single component with readPixels]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-read-a-single-component-with-readpixels.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-read-a-single-component-with-readpixels.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to render large scale images like 32000x32000]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-render-large-scale-images-like-32000x32000.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-render-large-scale-images-like-32000x32000.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to simulate a 3D texture in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-simulate-a-3d-texture-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-simulate-a-3d-texture-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to support both WebGL and WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-support-both-webgl-and-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-support-both-webgl-and-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to tell if an image has an alpha channel]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-tell-if-an-image-has-an-alpha-channel.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-tell-if-an-image-has-an-alpha-channel.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use a 2d sprite's transparency as a mask]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-a-2d-sprite-s-transparency-as-a-mask.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-a-2d-sprite-s-transparency-as-a-mask.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use texture, and color also in WebGL?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-texture--and-color-also-in-webgl-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-texture--and-color-also-in-webgl-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use textures as data]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-textures-as-data.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-textures-as-data.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to use the stencil buffer]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-the-stencil-buffer.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-use-the-stencil-buffer.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[How to write a web-based music visualizer]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-write-a-web-based-music-visualizer.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-how-to-write-a-web-based-music-visualizer.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[I get invalid type error when calling readPixels]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-i-get-invalid-type-error-when-calling-readpixels.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-i-get-invalid-type-error-when-calling-readpixels.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Is it possible to measure rendering time in webgl using gl.finish()?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-is-it-possible-to-measure-rendering-time-in-webgl-using-gl-finish---.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-is-it-possible-to-measure-rendering-time-in-webgl-using-gl-finish---.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Is there the notion of a generalized vertex and fragment shader?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-is-there-the-notion-of-a-generalized-vertex-and-fragment-shader-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-is-there-the-notion-of-a-generalized-vertex-and-fragment-shader-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Optimize drawing lots of large images]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-optimize-drawing-lots-of-large-images.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-optimize-drawing-lots-of-large-images.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Passing in per sprite alpha values when batching]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-passing-in-per-sprite-alpha-values-when-batching.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-passing-in-per-sprite-alpha-values-when-batching.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Pure WebGL Dashed Line]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-pure-webgl-dashed-line.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-pure-webgl-dashed-line.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Recording FPS in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-recording-fps-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-recording-fps-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Rendering slowly over time]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-rendering-slowly-over-time.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-rendering-slowly-over-time.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Setting the values of a struct array from JS to GLSL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-setting-the-values-of-a-struct-array-from-js-to-glsl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-setting-the-values-of-a-struct-array-from-js-to-glsl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Show a night view vs a day view on a 3D Earth sphere]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-show-a-night-view-vs-a-day-view-on-a-3d-earth-sphere.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-show-a-night-view-vs-a-day-view-on-a-3d-earth-sphere.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Sorting and optimizing instanced rendering]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-sorting-and-optimizing-instanced-rendering.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-sorting-and-optimizing-instanced-rendering.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Tex image TEXTURE_2D level 0 is incurring lazy initialization]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-tex-image-texture_2d-level-0-is-incurring-lazy-initialization.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-tex-image-texture_2d-level-0-is-incurring-lazy-initialization.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[The fastest way to draw many circles]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-the-fastest-way-to-draw-many-circles.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-the-fastest-way-to-draw-many-circles.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL 2D tilemaps]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-webgl-2d-tilemaps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-webgl-2d-tilemaps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL Droste effect]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-webgl-droste-effect.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-webgl-droste-effect.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[What is the local origin of a 3D model?]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-what-is-the-local-origin-of-a-3d-model-.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-what-is-the-local-origin-of-a-3d-model-.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[When to choose highp, mediump, lowp in shaders]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-when-to-choose-highp--mediump--lowp-in-shaders.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-when-to-choose-highp--mediump--lowp-in-shaders.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Working around gl_PointSize limitations webGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-working-around-gl_pointsize-limitations-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-working-around-gl_pointsize-limitations-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Zooming to and stopping at object in a scene in WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Questions and Answers]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-qna.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-qna.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 readPixels]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-readpixels.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-readpixels.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[References]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-references.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-references.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Rendering to a Texture]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-render-to-texture.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-render-to-texture.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Resizing the Canvas.]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-resizing-the-canvas.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-resizing-the-canvas.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Scene Graph]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-scene-graph.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-scene-graph.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Setup and Installation]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-setup-and-installation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-setup-and-installation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Shaders and GLSL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-shaders-and-glsl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-shaders-and-glsl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Shadertoy]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-shadertoy.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-shadertoy.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Shadows Continued]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-shadows-continued.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-shadows-continued.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Shadows]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-shadows.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-shadows.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Skinning]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-skinning.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 SkyBox]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-skybox.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-skybox.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Smallest Programs]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-smallest-programs.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-smallest-programs.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Sprites]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-sprites.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-sprites.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 State Diagram]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-state-diagram.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-state-diagram.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Text - Canvas 2D]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-text-canvas2d.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-text-canvas2d.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Text - Using a Glyph Texture]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-text-glyphs.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-text-glyphs.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Text - HTML]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-text-html.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-text-html.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Text - Textures]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-text-texture.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-text-texture.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Texture Units]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-texture-units.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-texture-units.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Tips]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-tips.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-tips.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Visualizing the Camera]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl-visualizing-the-camera.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl-visualizing-the-camera.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Differences from WebGLFundamentals.org]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl1-to-webgl2-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl1-to-webgl2-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 from WebGL1]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl1-to-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl1-to-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
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             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 What's New]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/webgl2-whats-new.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/webgl2-whats-new.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
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index 7088d7aa3..c94bc62bd 100644
--- a/webgl/lessons/de/atom.xml
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@@ -2,7 +2,7 @@
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     <id></id>
     <title>Grundlagen WebGL2</title>
-    <updated>2024-05-03T07:09:01.000Z</updated>
+    <updated>2024-09-23T22:07:20.000Z</updated>
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         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Unterschiede zu WebGLFundamentals.org]]></title>
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         <link href="https://webgl2fundamentals.org/webgl/lessons/de/webgl1-to-webgl2-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
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index 970262162..f0c759f55 100644
--- a/webgl/lessons/de/webgl-2-textures.html
+++ b/webgl/lessons/de/webgl-2-textures.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-2d-drawimage.html b/webgl/lessons/de/webgl-2d-drawimage.html
index 4fa94aea7..247afad55 100644
--- a/webgl/lessons/de/webgl-2d-drawimage.html
+++ b/webgl/lessons/de/webgl-2d-drawimage.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-2d-matrices.html b/webgl/lessons/de/webgl-2d-matrices.html
index 7ccefe5de..a96b38f47 100644
--- a/webgl/lessons/de/webgl-2d-matrices.html
+++ b/webgl/lessons/de/webgl-2d-matrices.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-2d-matrix-stack.html b/webgl/lessons/de/webgl-2d-matrix-stack.html
index e779aace1..c505b71b5 100644
--- a/webgl/lessons/de/webgl-2d-matrix-stack.html
+++ b/webgl/lessons/de/webgl-2d-matrix-stack.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-2d-rotation.html b/webgl/lessons/de/webgl-2d-rotation.html
index babd7e9a6..283ab8a2c 100644
--- a/webgl/lessons/de/webgl-2d-rotation.html
+++ b/webgl/lessons/de/webgl-2d-rotation.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-2d-scale.html b/webgl/lessons/de/webgl-2d-scale.html
index f61b03241..d5dfc77d2 100644
--- a/webgl/lessons/de/webgl-2d-scale.html
+++ b/webgl/lessons/de/webgl-2d-scale.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-2d-translation.html b/webgl/lessons/de/webgl-2d-translation.html
index 7c68c9bb6..a6ab8cf9b 100644
--- a/webgl/lessons/de/webgl-2d-translation.html
+++ b/webgl/lessons/de/webgl-2d-translation.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-2d-vs-3d-library.html b/webgl/lessons/de/webgl-2d-vs-3d-library.html
index b262d755b..d72ca7aa9 100644
--- a/webgl/lessons/de/webgl-2d-vs-3d-library.html
+++ b/webgl/lessons/de/webgl-2d-vs-3d-library.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-camera.html b/webgl/lessons/de/webgl-3d-camera.html
index 63cfe9030..de83050f2 100644
--- a/webgl/lessons/de/webgl-3d-camera.html
+++ b/webgl/lessons/de/webgl-3d-camera.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-geometry-lathe.html b/webgl/lessons/de/webgl-3d-geometry-lathe.html
index 3b9b91350..9ddc81f80 100644
--- a/webgl/lessons/de/webgl-3d-geometry-lathe.html
+++ b/webgl/lessons/de/webgl-3d-geometry-lathe.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-lighting-directional.html b/webgl/lessons/de/webgl-3d-lighting-directional.html
index 5e26fdf4d..84f0b4d09 100644
--- a/webgl/lessons/de/webgl-3d-lighting-directional.html
+++ b/webgl/lessons/de/webgl-3d-lighting-directional.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-lighting-normal-mapping.html b/webgl/lessons/de/webgl-3d-lighting-normal-mapping.html
index e565c12d1..7946d52ae 100644
--- a/webgl/lessons/de/webgl-3d-lighting-normal-mapping.html
+++ b/webgl/lessons/de/webgl-3d-lighting-normal-mapping.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-lighting-point.html b/webgl/lessons/de/webgl-3d-lighting-point.html
index 170bd9686..7314a8245 100644
--- a/webgl/lessons/de/webgl-3d-lighting-point.html
+++ b/webgl/lessons/de/webgl-3d-lighting-point.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-lighting-spot.html b/webgl/lessons/de/webgl-3d-lighting-spot.html
index 53e8ecfaa..451a06b4e 100644
--- a/webgl/lessons/de/webgl-3d-lighting-spot.html
+++ b/webgl/lessons/de/webgl-3d-lighting-spot.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-orthographic.html b/webgl/lessons/de/webgl-3d-orthographic.html
index d0d516535..33174f8c3 100644
--- a/webgl/lessons/de/webgl-3d-orthographic.html
+++ b/webgl/lessons/de/webgl-3d-orthographic.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-perspective-correct-texturemapping.html b/webgl/lessons/de/webgl-3d-perspective-correct-texturemapping.html
index f90d1e00f..ed9ff60a6 100644
--- a/webgl/lessons/de/webgl-3d-perspective-correct-texturemapping.html
+++ b/webgl/lessons/de/webgl-3d-perspective-correct-texturemapping.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-perspective.html b/webgl/lessons/de/webgl-3d-perspective.html
index 85c63a9d9..251ab05f7 100644
--- a/webgl/lessons/de/webgl-3d-perspective.html
+++ b/webgl/lessons/de/webgl-3d-perspective.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-3d-textures.html b/webgl/lessons/de/webgl-3d-textures.html
index ecaa3eb34..24b699670 100644
--- a/webgl/lessons/de/webgl-3d-textures.html
+++ b/webgl/lessons/de/webgl-3d-textures.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-and-alpha.html b/webgl/lessons/de/webgl-and-alpha.html
index 5945e00b0..aae4a5ca8 100644
--- a/webgl/lessons/de/webgl-and-alpha.html
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@@ -68,6 +68,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/de/webgl-setup-and-installation.html b/webgl/lessons/de/webgl-setup-and-installation.html
index 205bad5bd..c58a760f8 100644
--- a/webgl/lessons/de/webgl-setup-and-installation.html
+++ b/webgl/lessons/de/webgl-setup-and-installation.html
@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/de/webgl-shaders-and-glsl.html b/webgl/lessons/de/webgl-shaders-and-glsl.html
index cb5ca0d69..b7b7282ec 100644
--- a/webgl/lessons/de/webgl-shaders-and-glsl.html
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@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-shadertoy.html b/webgl/lessons/de/webgl-shadertoy.html
index 8fe63d253..9e9101200 100644
--- a/webgl/lessons/de/webgl-shadertoy.html
+++ b/webgl/lessons/de/webgl-shadertoy.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-shadows-continued.html b/webgl/lessons/de/webgl-shadows-continued.html
index 6cdaa8e3f..ba4cdffc4 100644
--- a/webgl/lessons/de/webgl-shadows-continued.html
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@@ -68,6 +68,7 @@
 
 
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-shadows.html b/webgl/lessons/de/webgl-shadows.html
index a52d9208c..2e0396143 100644
--- a/webgl/lessons/de/webgl-shadows.html
+++ b/webgl/lessons/de/webgl-shadows.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-skinning.html b/webgl/lessons/de/webgl-skinning.html
index 14eb72cee..3603a0754 100644
--- a/webgl/lessons/de/webgl-skinning.html
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@@ -68,6 +68,7 @@
 
 
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-skybox.html b/webgl/lessons/de/webgl-skybox.html
index 711bf1df4..c2a042aef 100644
--- a/webgl/lessons/de/webgl-skybox.html
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@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-smallest-programs.html b/webgl/lessons/de/webgl-smallest-programs.html
index 2965cacba..2d5d0a732 100644
--- a/webgl/lessons/de/webgl-smallest-programs.html
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@@ -68,6 +68,7 @@
 
 
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-sprites.html b/webgl/lessons/de/webgl-sprites.html
index 6b7a38d08..a70602332 100644
--- a/webgl/lessons/de/webgl-sprites.html
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@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-state-diagram.html b/webgl/lessons/de/webgl-state-diagram.html
index 804421e54..4202eb3e2 100644
--- a/webgl/lessons/de/webgl-state-diagram.html
+++ b/webgl/lessons/de/webgl-state-diagram.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-text-canvas2d.html b/webgl/lessons/de/webgl-text-canvas2d.html
index c5c9c19d8..d30769e9e 100644
--- a/webgl/lessons/de/webgl-text-canvas2d.html
+++ b/webgl/lessons/de/webgl-text-canvas2d.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-text-glyphs.html b/webgl/lessons/de/webgl-text-glyphs.html
index e6721e2cb..4a26629bc 100644
--- a/webgl/lessons/de/webgl-text-glyphs.html
+++ b/webgl/lessons/de/webgl-text-glyphs.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-text-html.html b/webgl/lessons/de/webgl-text-html.html
index 361c824d7..8cfadb14e 100644
--- a/webgl/lessons/de/webgl-text-html.html
+++ b/webgl/lessons/de/webgl-text-html.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-text-texture.html b/webgl/lessons/de/webgl-text-texture.html
index 37700c482..257f74eaf 100644
--- a/webgl/lessons/de/webgl-text-texture.html
+++ b/webgl/lessons/de/webgl-text-texture.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-texture-units.html b/webgl/lessons/de/webgl-texture-units.html
index 203384a4a..9234dd311 100644
--- a/webgl/lessons/de/webgl-texture-units.html
+++ b/webgl/lessons/de/webgl-texture-units.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-tips.html b/webgl/lessons/de/webgl-tips.html
index 83fd6aa00..fe6dbf596 100644
--- a/webgl/lessons/de/webgl-tips.html
+++ b/webgl/lessons/de/webgl-tips.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl-visualizing-the-camera.html b/webgl/lessons/de/webgl-visualizing-the-camera.html
index b7881e830..0f5863194 100644
--- a/webgl/lessons/de/webgl-visualizing-the-camera.html
+++ b/webgl/lessons/de/webgl-visualizing-the-camera.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl1-to-webgl2-fundamentals.html b/webgl/lessons/de/webgl1-to-webgl2-fundamentals.html
index d91197f1a..49279afa8 100644
--- a/webgl/lessons/de/webgl1-to-webgl2-fundamentals.html
+++ b/webgl/lessons/de/webgl1-to-webgl2-fundamentals.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl1-to-webgl2.html b/webgl/lessons/de/webgl1-to-webgl2.html
index 47e3e551f..2a1e13873 100644
--- a/webgl/lessons/de/webgl1-to-webgl2.html
+++ b/webgl/lessons/de/webgl1-to-webgl2.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/de/webgl2-whats-new.html b/webgl/lessons/de/webgl2-whats-new.html
index 70892a96c..0aa24bf9d 100644
--- a/webgl/lessons/de/webgl2-whats-new.html
+++ b/webgl/lessons/de/webgl2-whats-new.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Inhaltsverzeichnis</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/atom.xml b/webgl/lessons/ja/atom.xml
index 3dd568d99..d69638e58 100644
--- a/webgl/lessons/ja/atom.xml
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@@ -2,7 +2,7 @@
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-        <updated>2024-05-03T07:09:01.000Z</updated>
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-        <published>2024-05-03T07:09:01.000Z</published>
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     <entry>
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-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
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     <entry>
         <title type="html"><![CDATA[WebGLの仕組み]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ja/webgl-how-it-works.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ja/webgl-how-it-works.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
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             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
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     <entry>
         <title type="html"><![CDATA[WebGL2における画像処理の続き]]></title>
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         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
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     <entry>
         <title type="html"><![CDATA[WebGL2における画像処理]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ja/webgl-image-processing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ja/webgl-image-processing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGLシェーダーとGLSL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ja/webgl-shaders-and-glsl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ja/webgl-shaders-and-glsl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGLFundamentals.orgとの違い]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ja/webgl1-to-webgl2-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ja/webgl1-to-webgl2-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL1からWebGL2への移行]]></title>
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         <link href="https://webgl2fundamentals.org/webgl/lessons/ja/webgl1-to-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
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             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2の新機能]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ja/webgl2-whats-new.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ja/webgl2-whats-new.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
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\ No newline at end of file
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index 8cc7c60bb..591af6ef9 100644
--- a/webgl/lessons/ja/webgl-2-textures.html
+++ b/webgl/lessons/ja/webgl-2-textures.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-2d-drawimage.html b/webgl/lessons/ja/webgl-2d-drawimage.html
index 087a71b86..0810432b3 100644
--- a/webgl/lessons/ja/webgl-2d-drawimage.html
+++ b/webgl/lessons/ja/webgl-2d-drawimage.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-2d-matrices.html b/webgl/lessons/ja/webgl-2d-matrices.html
index 40f06d701..2cc5d0c3f 100644
--- a/webgl/lessons/ja/webgl-2d-matrices.html
+++ b/webgl/lessons/ja/webgl-2d-matrices.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-2d-matrix-stack.html b/webgl/lessons/ja/webgl-2d-matrix-stack.html
index 1f01c62ed..46ff3db6c 100644
--- a/webgl/lessons/ja/webgl-2d-matrix-stack.html
+++ b/webgl/lessons/ja/webgl-2d-matrix-stack.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-2d-rotation.html b/webgl/lessons/ja/webgl-2d-rotation.html
index 3f0dc9dc9..7b147aced 100644
--- a/webgl/lessons/ja/webgl-2d-rotation.html
+++ b/webgl/lessons/ja/webgl-2d-rotation.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-2d-scale.html b/webgl/lessons/ja/webgl-2d-scale.html
index 1c4355db7..a6d9e0e60 100644
--- a/webgl/lessons/ja/webgl-2d-scale.html
+++ b/webgl/lessons/ja/webgl-2d-scale.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-2d-translation.html b/webgl/lessons/ja/webgl-2d-translation.html
index 750ab0701..297594905 100644
--- a/webgl/lessons/ja/webgl-2d-translation.html
+++ b/webgl/lessons/ja/webgl-2d-translation.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-2d-vs-3d-library.html b/webgl/lessons/ja/webgl-2d-vs-3d-library.html
index c73b34f8c..346aabef7 100644
--- a/webgl/lessons/ja/webgl-2d-vs-3d-library.html
+++ b/webgl/lessons/ja/webgl-2d-vs-3d-library.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-3d-camera.html b/webgl/lessons/ja/webgl-3d-camera.html
index 1ba5df071..91375543e 100644
--- a/webgl/lessons/ja/webgl-3d-camera.html
+++ b/webgl/lessons/ja/webgl-3d-camera.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-3d-geometry-lathe.html b/webgl/lessons/ja/webgl-3d-geometry-lathe.html
index ba31b67a5..4d8a5197b 100644
--- a/webgl/lessons/ja/webgl-3d-geometry-lathe.html
+++ b/webgl/lessons/ja/webgl-3d-geometry-lathe.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-3d-lighting-directional.html b/webgl/lessons/ja/webgl-3d-lighting-directional.html
index 20cd2c1ff..755b737a8 100644
--- a/webgl/lessons/ja/webgl-3d-lighting-directional.html
+++ b/webgl/lessons/ja/webgl-3d-lighting-directional.html
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+++ b/webgl/lessons/ja/webgl-3d-orthographic.html
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+++ b/webgl/lessons/ja/webgl-and-alpha.html
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diff --git a/webgl/lessons/ja/webgl-qna.html b/webgl/lessons/ja/webgl-qna.html
index 4ced071ca..ee4e85260 100644
--- a/webgl/lessons/ja/webgl-qna.html
+++ b/webgl/lessons/ja/webgl-qna.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-readpixels.html b/webgl/lessons/ja/webgl-readpixels.html
index d228b7eb5..b9171ab64 100644
--- a/webgl/lessons/ja/webgl-readpixels.html
+++ b/webgl/lessons/ja/webgl-readpixels.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-references.html b/webgl/lessons/ja/webgl-references.html
index e446f1a77..6f538788e 100644
--- a/webgl/lessons/ja/webgl-references.html
+++ b/webgl/lessons/ja/webgl-references.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-render-to-texture.html b/webgl/lessons/ja/webgl-render-to-texture.html
index e3a19edb6..d283d9e39 100644
--- a/webgl/lessons/ja/webgl-render-to-texture.html
+++ b/webgl/lessons/ja/webgl-render-to-texture.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-resizing-the-canvas.html b/webgl/lessons/ja/webgl-resizing-the-canvas.html
index 3face41bb..f7b47944c 100644
--- a/webgl/lessons/ja/webgl-resizing-the-canvas.html
+++ b/webgl/lessons/ja/webgl-resizing-the-canvas.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-scene-graph.html b/webgl/lessons/ja/webgl-scene-graph.html
index 47fb298e1..7d19aecf7 100644
--- a/webgl/lessons/ja/webgl-scene-graph.html
+++ b/webgl/lessons/ja/webgl-scene-graph.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-setup-and-installation.html b/webgl/lessons/ja/webgl-setup-and-installation.html
index 59f310e79..27f460340 100644
--- a/webgl/lessons/ja/webgl-setup-and-installation.html
+++ b/webgl/lessons/ja/webgl-setup-and-installation.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-shaders-and-glsl.html b/webgl/lessons/ja/webgl-shaders-and-glsl.html
index 463ace63c..e4fc4127e 100644
--- a/webgl/lessons/ja/webgl-shaders-and-glsl.html
+++ b/webgl/lessons/ja/webgl-shaders-and-glsl.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-shadertoy.html b/webgl/lessons/ja/webgl-shadertoy.html
index 6b79ab297..31ea3eec6 100644
--- a/webgl/lessons/ja/webgl-shadertoy.html
+++ b/webgl/lessons/ja/webgl-shadertoy.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-shadows-continued.html b/webgl/lessons/ja/webgl-shadows-continued.html
index 55de1a226..8b3d57a20 100644
--- a/webgl/lessons/ja/webgl-shadows-continued.html
+++ b/webgl/lessons/ja/webgl-shadows-continued.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-shadows.html b/webgl/lessons/ja/webgl-shadows.html
index c60d45e74..952f7cbc8 100644
--- a/webgl/lessons/ja/webgl-shadows.html
+++ b/webgl/lessons/ja/webgl-shadows.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-skinning.html b/webgl/lessons/ja/webgl-skinning.html
index 9b6b74d59..04c43a337 100644
--- a/webgl/lessons/ja/webgl-skinning.html
+++ b/webgl/lessons/ja/webgl-skinning.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-skybox.html b/webgl/lessons/ja/webgl-skybox.html
index ea6e96cdb..72735a156 100644
--- a/webgl/lessons/ja/webgl-skybox.html
+++ b/webgl/lessons/ja/webgl-skybox.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-smallest-programs.html b/webgl/lessons/ja/webgl-smallest-programs.html
index 6d37341c4..c9f24178f 100644
--- a/webgl/lessons/ja/webgl-smallest-programs.html
+++ b/webgl/lessons/ja/webgl-smallest-programs.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-sprites.html b/webgl/lessons/ja/webgl-sprites.html
index a6ed6ad34..3cf61788b 100644
--- a/webgl/lessons/ja/webgl-sprites.html
+++ b/webgl/lessons/ja/webgl-sprites.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-state-diagram.html b/webgl/lessons/ja/webgl-state-diagram.html
index 41ba01dd5..9fb927ca5 100644
--- a/webgl/lessons/ja/webgl-state-diagram.html
+++ b/webgl/lessons/ja/webgl-state-diagram.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-text-canvas2d.html b/webgl/lessons/ja/webgl-text-canvas2d.html
index b609f1471..8ca4c20c0 100644
--- a/webgl/lessons/ja/webgl-text-canvas2d.html
+++ b/webgl/lessons/ja/webgl-text-canvas2d.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-text-glyphs.html b/webgl/lessons/ja/webgl-text-glyphs.html
index acc53cdf9..37b03d895 100644
--- a/webgl/lessons/ja/webgl-text-glyphs.html
+++ b/webgl/lessons/ja/webgl-text-glyphs.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-text-html.html b/webgl/lessons/ja/webgl-text-html.html
index 54bd0ea23..98a41282f 100644
--- a/webgl/lessons/ja/webgl-text-html.html
+++ b/webgl/lessons/ja/webgl-text-html.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-text-texture.html b/webgl/lessons/ja/webgl-text-texture.html
index 51ce297c7..bf7060c2a 100644
--- a/webgl/lessons/ja/webgl-text-texture.html
+++ b/webgl/lessons/ja/webgl-text-texture.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-texture-units.html b/webgl/lessons/ja/webgl-texture-units.html
index 32a5a8faa..5af6c4083 100644
--- a/webgl/lessons/ja/webgl-texture-units.html
+++ b/webgl/lessons/ja/webgl-texture-units.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-tips.html b/webgl/lessons/ja/webgl-tips.html
index fac62d381..64bbb337c 100644
--- a/webgl/lessons/ja/webgl-tips.html
+++ b/webgl/lessons/ja/webgl-tips.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl-visualizing-the-camera.html b/webgl/lessons/ja/webgl-visualizing-the-camera.html
index 877e7f9c8..4a2333b3b 100644
--- a/webgl/lessons/ja/webgl-visualizing-the-camera.html
+++ b/webgl/lessons/ja/webgl-visualizing-the-camera.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl1-to-webgl2-fundamentals.html b/webgl/lessons/ja/webgl1-to-webgl2-fundamentals.html
index 3c7544726..e7d0a3dc3 100644
--- a/webgl/lessons/ja/webgl1-to-webgl2-fundamentals.html
+++ b/webgl/lessons/ja/webgl1-to-webgl2-fundamentals.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl1-to-webgl2.html b/webgl/lessons/ja/webgl1-to-webgl2.html
index 84d62e412..807248fcd 100644
--- a/webgl/lessons/ja/webgl1-to-webgl2.html
+++ b/webgl/lessons/ja/webgl1-to-webgl2.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ja/webgl2-whats-new.html b/webgl/lessons/ja/webgl2-whats-new.html
index ac32b7c17..9b81794b5 100644
--- a/webgl/lessons/ja/webgl2-whats-new.html
+++ b/webgl/lessons/ja/webgl2-whats-new.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目次</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/atom.xml b/webgl/lessons/ko/atom.xml
index 5f28f95fc..017cf3fb9 100644
--- a/webgl/lessons/ko/atom.xml
+++ b/webgl/lessons/ko/atom.xml
@@ -2,7 +2,7 @@
 <feed xmlns="http://www.w3.org/2005/Atom">
     <id></id>
     <title>WebGL2 기초</title>
-    <updated>2024-05-03T07:09:01.000Z</updated>
+    <updated>2024-09-23T22:07:20.000Z</updated>
     <generator>https://github.com/jpmonette/feed</generator>
     <author>
         <name>WebGL2Fundamentals Contributors</name>
@@ -16,743 +16,743 @@
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 DrawImage 구현]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-drawimage.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-drawimage.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 2D 행렬]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-matrices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-matrices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 행렬 스택 구현]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-matrix-stack.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-matrix-stack.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 2D 회전]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-rotation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-rotation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 2D 크기 변환]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-scale.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-scale.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 2D 이동]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-translation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-translation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 래스터라이징 vs 3D 라이브러리]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-vs-3d-library.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-2d-vs-3d-library.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL 3D - 카메라]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-camera.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-camera.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - 방향성 조명 효과(Directional Lighting)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-lighting-directional.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-lighting-directional.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - 점 조명 효과(Point Lighting)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-lighting-point.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-lighting-point.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - 스팟 조명 효과(Spot Lighting)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-lighting-spot.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-lighting-spot.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 3D 직교 투영]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-orthographic.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-orthographic.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D 원근 교정 텍스처 매핑]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-perspective-correct-texturemapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-perspective-correct-texturemapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL 3D 원근 투영]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-perspective.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-perspective.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 텍스처]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-3d-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 알파(Alpha)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-and-alpha.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-and-alpha.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 애니메이션]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-animation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-animation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 안티패턴]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-anti-patterns.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-anti-patterns.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Attributes]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-attributes.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-attributes.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 보일러플레이트(Boilerplate)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-boilerplate.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-boilerplate.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 교차 출처 이미지(Cross Origin Image)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-cors-permission.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-cors-permission.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Cross Platform 문제]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-cross-platform-issues.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-cross-platform-issues.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 큐브맵(Cubemap)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-cube-maps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-cube-maps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D - 데이터 텍스처]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-data-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-data-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 여러 물체를 그리는 법]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-drawing-multiple-things.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-drawing-multiple-things.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 환경맵 (반사)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-environment-maps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-environment-maps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Framebuffer]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-framebuffers.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-framebuffers.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 기초]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 사용법]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-getting-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-getting-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 GPGPU]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-gpgpu.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-gpgpu.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 작동 원리]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-how-it-works.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-how-it-works.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 이미지 처리 심화]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-image-processing-continued.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-image-processing-continued.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 이미지 처리]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-image-processing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-image-processing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 정점 인덱스]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-indexed-vertices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-indexed-vertices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 최적화 - 인스턴스 드로잉(Instanced Drawing)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-instanced-drawing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-instanced-drawing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 더 적은 코드로 즐겁게 코딩하기]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-less-code-more-fun.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-less-code-more-fun.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Obj 로딩]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-load-obj.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-load-obj.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 행렬의 이름]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-matrix-naming.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-matrix-naming.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 행렬 vs 수학에서의 행렬]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-matrix-vs-math.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-matrix-vs-math.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 평면 및 원근 투영 매핑]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-planar-projection-mapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-planar-projection-mapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 점, 선, 삼각형]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-points-lines-triangles.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-points-lines-triangles.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 정밀도 이슈]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-precision-issues.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-precision-issues.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[질문 및 답변]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-qna.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-qna.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 readPixels]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-readpixels.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-readpixels.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[참고 자료]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-references.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-references.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 텍스처에 렌더링하기]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-render-to-texture.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-render-to-texture.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Canvas 리사이징.]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-resizing-the-canvas.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-resizing-the-canvas.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 장면(Scene) 그래프]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-scene-graph.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-scene-graph.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 설정 및 설치]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-setup-and-installation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-setup-and-installation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 셰이더와 GLSL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-shaders-and-glsl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-shaders-and-glsl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 그림자]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-shadows.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-shadows.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 SkyBox]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-skybox.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-skybox.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Sprite]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-sprites.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-sprites.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 텍스트 - Canvas 2D]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-text-canvas2d.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-text-canvas2d.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 텍스트 - HTML]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-text-html.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-text-html.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 텍스트 - 텍스처]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-text-texture.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-text-texture.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 텍스처 유닛]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-texture-units.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-texture-units.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Tip]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl-tips.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl-tips.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGLFundamentals.org과 다른 점]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl1-to-webgl2-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl1-to-webgl2-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL1에서 WebGL2로의 변경]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl1-to-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl1-to-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 새로운 기능]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/ko/webgl2-whats-new.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/ko/webgl2-whats-new.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
 </feed>
\ No newline at end of file
diff --git a/webgl/lessons/ko/webgl-2-textures.html b/webgl/lessons/ko/webgl-2-textures.html
index 4258ae4f0..cd7e03421 100644
--- a/webgl/lessons/ko/webgl-2-textures.html
+++ b/webgl/lessons/ko/webgl-2-textures.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-2d-drawimage.html b/webgl/lessons/ko/webgl-2d-drawimage.html
index 330ab654a..0bef84c3d 100644
--- a/webgl/lessons/ko/webgl-2d-drawimage.html
+++ b/webgl/lessons/ko/webgl-2d-drawimage.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-2d-matrices.html b/webgl/lessons/ko/webgl-2d-matrices.html
index 094126767..14fcab0b1 100644
--- a/webgl/lessons/ko/webgl-2d-matrices.html
+++ b/webgl/lessons/ko/webgl-2d-matrices.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-2d-matrix-stack.html b/webgl/lessons/ko/webgl-2d-matrix-stack.html
index 8d918dcb6..b47d33707 100644
--- a/webgl/lessons/ko/webgl-2d-matrix-stack.html
+++ b/webgl/lessons/ko/webgl-2d-matrix-stack.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-2d-rotation.html b/webgl/lessons/ko/webgl-2d-rotation.html
index ecdef771c..e2575cb50 100644
--- a/webgl/lessons/ko/webgl-2d-rotation.html
+++ b/webgl/lessons/ko/webgl-2d-rotation.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-2d-scale.html b/webgl/lessons/ko/webgl-2d-scale.html
index e4ae8001f..0043afe34 100644
--- a/webgl/lessons/ko/webgl-2d-scale.html
+++ b/webgl/lessons/ko/webgl-2d-scale.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-2d-translation.html b/webgl/lessons/ko/webgl-2d-translation.html
index 3254cc98e..957d51c99 100644
--- a/webgl/lessons/ko/webgl-2d-translation.html
+++ b/webgl/lessons/ko/webgl-2d-translation.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-2d-vs-3d-library.html b/webgl/lessons/ko/webgl-2d-vs-3d-library.html
index a7a2b7787..66a611ea0 100644
--- a/webgl/lessons/ko/webgl-2d-vs-3d-library.html
+++ b/webgl/lessons/ko/webgl-2d-vs-3d-library.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-3d-camera.html b/webgl/lessons/ko/webgl-3d-camera.html
index 5d68e6070..9390083ae 100644
--- a/webgl/lessons/ko/webgl-3d-camera.html
+++ b/webgl/lessons/ko/webgl-3d-camera.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-3d-geometry-lathe.html b/webgl/lessons/ko/webgl-3d-geometry-lathe.html
index 0ce43894d..8f6f0e87c 100644
--- a/webgl/lessons/ko/webgl-3d-geometry-lathe.html
+++ b/webgl/lessons/ko/webgl-3d-geometry-lathe.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-3d-lighting-directional.html b/webgl/lessons/ko/webgl-3d-lighting-directional.html
index ecd3eeeb8..fe5bca78f 100644
--- a/webgl/lessons/ko/webgl-3d-lighting-directional.html
+++ b/webgl/lessons/ko/webgl-3d-lighting-directional.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-3d-lighting-normal-mapping.html b/webgl/lessons/ko/webgl-3d-lighting-normal-mapping.html
index 2b010f0ec..95973c8c9 100644
--- a/webgl/lessons/ko/webgl-3d-lighting-normal-mapping.html
+++ b/webgl/lessons/ko/webgl-3d-lighting-normal-mapping.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-3d-lighting-point.html b/webgl/lessons/ko/webgl-3d-lighting-point.html
index 6090fe38a..d97ab758f 100644
--- a/webgl/lessons/ko/webgl-3d-lighting-point.html
+++ b/webgl/lessons/ko/webgl-3d-lighting-point.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-3d-lighting-spot.html b/webgl/lessons/ko/webgl-3d-lighting-spot.html
index 4d4277230..127a1304d 100644
--- a/webgl/lessons/ko/webgl-3d-lighting-spot.html
+++ b/webgl/lessons/ko/webgl-3d-lighting-spot.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-3d-orthographic.html b/webgl/lessons/ko/webgl-3d-orthographic.html
index 7fc5c029d..b22191e47 100644
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-make-webgl-canvas-transparent.html b/webgl/lessons/ko/webgl-qna-how-to-make-webgl-canvas-transparent.html
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@@ -68,6 +68,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-read-a-single-component-with-readpixels.html b/webgl/lessons/ko/webgl-qna-how-to-read-a-single-component-with-readpixels.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-render-large-scale-images-like-32000x32000.html b/webgl/lessons/ko/webgl-qna-how-to-render-large-scale-images-like-32000x32000.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-simulate-a-3d-texture-in-webgl.html b/webgl/lessons/ko/webgl-qna-how-to-simulate-a-3d-texture-in-webgl.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-support-both-webgl-and-webgl2.html b/webgl/lessons/ko/webgl-qna-how-to-support-both-webgl-and-webgl2.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-tell-if-an-image-has-an-alpha-channel.html b/webgl/lessons/ko/webgl-qna-how-to-tell-if-an-image-has-an-alpha-channel.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-use-a-2d-sprite-s-transparency-as-a-mask.html b/webgl/lessons/ko/webgl-qna-how-to-use-a-2d-sprite-s-transparency-as-a-mask.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-use-texture--and-color-also-in-webgl-.html b/webgl/lessons/ko/webgl-qna-how-to-use-texture--and-color-also-in-webgl-.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-use-textures-as-data.html b/webgl/lessons/ko/webgl-qna-how-to-use-textures-as-data.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-use-the-stencil-buffer.html b/webgl/lessons/ko/webgl-qna-how-to-use-the-stencil-buffer.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-how-to-write-a-web-based-music-visualizer.html b/webgl/lessons/ko/webgl-qna-how-to-write-a-web-based-music-visualizer.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-i-get-invalid-type-error-when-calling-readpixels.html b/webgl/lessons/ko/webgl-qna-i-get-invalid-type-error-when-calling-readpixels.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-is-it-possible-to-measure-rendering-time-in-webgl-using-gl-finish---.html b/webgl/lessons/ko/webgl-qna-is-it-possible-to-measure-rendering-time-in-webgl-using-gl-finish---.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-is-there-the-notion-of-a-generalized-vertex-and-fragment-shader-.html b/webgl/lessons/ko/webgl-qna-is-there-the-notion-of-a-generalized-vertex-and-fragment-shader-.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-optimize-drawing-lots-of-large-images.html b/webgl/lessons/ko/webgl-qna-optimize-drawing-lots-of-large-images.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/ko/webgl-qna-passing-in-per-sprite-alpha-values-when-batching.html b/webgl/lessons/ko/webgl-qna-passing-in-per-sprite-alpha-values-when-batching.html
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@@ -68,6 +68,7 @@
 
 
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@@ -123,6 +123,7 @@
 
 
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index 3d467f23a..32ab5b22e 100644
--- a/webgl/lessons/ko/webgl-references.html
+++ b/webgl/lessons/ko/webgl-references.html
@@ -123,6 +123,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/ko/webgl-render-to-texture.html b/webgl/lessons/ko/webgl-render-to-texture.html
index 0bc74baff..d5ca27caa 100644
--- a/webgl/lessons/ko/webgl-render-to-texture.html
+++ b/webgl/lessons/ko/webgl-render-to-texture.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/ko/webgl-resizing-the-canvas.html b/webgl/lessons/ko/webgl-resizing-the-canvas.html
index aba7c27e8..c5959d0b2 100644
--- a/webgl/lessons/ko/webgl-resizing-the-canvas.html
+++ b/webgl/lessons/ko/webgl-resizing-the-canvas.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-scene-graph.html b/webgl/lessons/ko/webgl-scene-graph.html
index 942a07669..d0697df03 100644
--- a/webgl/lessons/ko/webgl-scene-graph.html
+++ b/webgl/lessons/ko/webgl-scene-graph.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-setup-and-installation.html b/webgl/lessons/ko/webgl-setup-and-installation.html
index 78125e344..291e2a2d0 100644
--- a/webgl/lessons/ko/webgl-setup-and-installation.html
+++ b/webgl/lessons/ko/webgl-setup-and-installation.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-shaders-and-glsl.html b/webgl/lessons/ko/webgl-shaders-and-glsl.html
index f5674de63..87358d7eb 100644
--- a/webgl/lessons/ko/webgl-shaders-and-glsl.html
+++ b/webgl/lessons/ko/webgl-shaders-and-glsl.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-shadertoy.html b/webgl/lessons/ko/webgl-shadertoy.html
index 662e3b511..43e9ac167 100644
--- a/webgl/lessons/ko/webgl-shadertoy.html
+++ b/webgl/lessons/ko/webgl-shadertoy.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-shadows-continued.html b/webgl/lessons/ko/webgl-shadows-continued.html
index 02543bdd7..1801cd8f7 100644
--- a/webgl/lessons/ko/webgl-shadows-continued.html
+++ b/webgl/lessons/ko/webgl-shadows-continued.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-shadows.html b/webgl/lessons/ko/webgl-shadows.html
index 5c6346d3a..2e3a4a009 100644
--- a/webgl/lessons/ko/webgl-shadows.html
+++ b/webgl/lessons/ko/webgl-shadows.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/ko/webgl-skinning.html b/webgl/lessons/ko/webgl-skinning.html
index 9b2eb2d02..037b28d93 100644
--- a/webgl/lessons/ko/webgl-skinning.html
+++ b/webgl/lessons/ko/webgl-skinning.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-skybox.html b/webgl/lessons/ko/webgl-skybox.html
index 9a57febe0..ff2e5c7c8 100644
--- a/webgl/lessons/ko/webgl-skybox.html
+++ b/webgl/lessons/ko/webgl-skybox.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-smallest-programs.html b/webgl/lessons/ko/webgl-smallest-programs.html
index fc41cfb62..24f3338a1 100644
--- a/webgl/lessons/ko/webgl-smallest-programs.html
+++ b/webgl/lessons/ko/webgl-smallest-programs.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-sprites.html b/webgl/lessons/ko/webgl-sprites.html
index 231e60639..d9194fe3b 100644
--- a/webgl/lessons/ko/webgl-sprites.html
+++ b/webgl/lessons/ko/webgl-sprites.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-state-diagram.html b/webgl/lessons/ko/webgl-state-diagram.html
index db3ba507b..18a933d71 100644
--- a/webgl/lessons/ko/webgl-state-diagram.html
+++ b/webgl/lessons/ko/webgl-state-diagram.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-text-canvas2d.html b/webgl/lessons/ko/webgl-text-canvas2d.html
index ef69f096f..597a6d439 100644
--- a/webgl/lessons/ko/webgl-text-canvas2d.html
+++ b/webgl/lessons/ko/webgl-text-canvas2d.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-text-glyphs.html b/webgl/lessons/ko/webgl-text-glyphs.html
index 73abbb930..dbbd72b7e 100644
--- a/webgl/lessons/ko/webgl-text-glyphs.html
+++ b/webgl/lessons/ko/webgl-text-glyphs.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-text-html.html b/webgl/lessons/ko/webgl-text-html.html
index 910855c0d..bcec7c2d0 100644
--- a/webgl/lessons/ko/webgl-text-html.html
+++ b/webgl/lessons/ko/webgl-text-html.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-text-texture.html b/webgl/lessons/ko/webgl-text-texture.html
index 630d9790d..6974c3c71 100644
--- a/webgl/lessons/ko/webgl-text-texture.html
+++ b/webgl/lessons/ko/webgl-text-texture.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-texture-units.html b/webgl/lessons/ko/webgl-texture-units.html
index e3fc0fb24..bc0c8e97d 100644
--- a/webgl/lessons/ko/webgl-texture-units.html
+++ b/webgl/lessons/ko/webgl-texture-units.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-tips.html b/webgl/lessons/ko/webgl-tips.html
index d5dbdbcad..2805dccb3 100644
--- a/webgl/lessons/ko/webgl-tips.html
+++ b/webgl/lessons/ko/webgl-tips.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl-visualizing-the-camera.html b/webgl/lessons/ko/webgl-visualizing-the-camera.html
index fc0eb3cd8..513772bcd 100644
--- a/webgl/lessons/ko/webgl-visualizing-the-camera.html
+++ b/webgl/lessons/ko/webgl-visualizing-the-camera.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl1-to-webgl2-fundamentals.html b/webgl/lessons/ko/webgl1-to-webgl2-fundamentals.html
index 125481c9f..ab3ac246d 100644
--- a/webgl/lessons/ko/webgl1-to-webgl2-fundamentals.html
+++ b/webgl/lessons/ko/webgl1-to-webgl2-fundamentals.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl1-to-webgl2.html b/webgl/lessons/ko/webgl1-to-webgl2.html
index 54cad8a01..5340366c7 100644
--- a/webgl/lessons/ko/webgl1-to-webgl2.html
+++ b/webgl/lessons/ko/webgl1-to-webgl2.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/ko/webgl2-whats-new.html b/webgl/lessons/ko/webgl2-whats-new.html
index e87fb5203..2253168ac 100644
--- a/webgl/lessons/ko/webgl2-whats-new.html
+++ b/webgl/lessons/ko/webgl2-whats-new.html
@@ -123,6 +123,7 @@
 
 
     <a href="#toc">목차</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/atom.xml b/webgl/lessons/pt-br/atom.xml
index 7a68521ae..3bbaa40d2 100644
--- a/webgl/lessons/pt-br/atom.xml
+++ b/webgl/lessons/pt-br/atom.xml
@@ -2,7 +2,7 @@
 <feed xmlns="http://www.w3.org/2005/Atom">
     <id></id>
     <title>Fundamentos da WebGL2</title>
-    <updated>2024-05-03T07:09:01.000Z</updated>
+    <updated>2024-09-23T22:07:20.000Z</updated>
     <generator>https://github.com/jpmonette/feed</generator>
     <author>
         <name>WebGL2Fundamentals Contributors</name>
@@ -16,215 +16,215 @@
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-2d-rotation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-2d-rotation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Escala 2D WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-2d-scale.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-2d-scale.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Translação 2D WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-2d-translation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-2d-translation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Rasterização vs Bibliotecas 3D]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-2d-vs-3d-library.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-2d-vs-3d-library.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Alfa e a WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-and-alpha.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-and-alpha.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Animção]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-animation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-animation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - Cross Origin Images]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-cors-permission.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-cors-permission.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Fundamentos da WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Como usar a WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-getting-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-getting-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Processamento de Imagem Continuada WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-image-processing-continued.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-image-processing-continued.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Processamento de imagem WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-image-processing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-image-processing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Nomenclaturas das Matrizes WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-matrix-naming.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-matrix-naming.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Configuração e Instalação da WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-setup-and-installation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-setup-and-installation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Texto - Canvas 2D WebGL]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-text-canvas2d.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-text-canvas2d.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Texto - HTML]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-text-html.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl-text-html.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[Diferenças da WebGL2Fundamentals.org]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl1-to-webgl2-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl1-to-webgl2-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 para a WebGL1]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl1-to-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl1-to-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 O que há de novo]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl2-whats-new.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/pt-br/webgl2-whats-new.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
 </feed>
\ No newline at end of file
diff --git a/webgl/lessons/pt-br/webgl-2-textures.html b/webgl/lessons/pt-br/webgl-2-textures.html
index 6fab28c4e..c4365b210 100644
--- a/webgl/lessons/pt-br/webgl-2-textures.html
+++ b/webgl/lessons/pt-br/webgl-2-textures.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-2d-drawimage.html b/webgl/lessons/pt-br/webgl-2d-drawimage.html
index e765632cd..313939f3f 100644
--- a/webgl/lessons/pt-br/webgl-2d-drawimage.html
+++ b/webgl/lessons/pt-br/webgl-2d-drawimage.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-2d-matrices.html b/webgl/lessons/pt-br/webgl-2d-matrices.html
index 72131d837..0fff38934 100644
--- a/webgl/lessons/pt-br/webgl-2d-matrices.html
+++ b/webgl/lessons/pt-br/webgl-2d-matrices.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-2d-matrix-stack.html b/webgl/lessons/pt-br/webgl-2d-matrix-stack.html
index 71dda5b90..11d975e1c 100644
--- a/webgl/lessons/pt-br/webgl-2d-matrix-stack.html
+++ b/webgl/lessons/pt-br/webgl-2d-matrix-stack.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-2d-rotation.html b/webgl/lessons/pt-br/webgl-2d-rotation.html
index 2537aeb55..238185af4 100644
--- a/webgl/lessons/pt-br/webgl-2d-rotation.html
+++ b/webgl/lessons/pt-br/webgl-2d-rotation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-2d-scale.html b/webgl/lessons/pt-br/webgl-2d-scale.html
index 13155c8bc..6d90f97bf 100644
--- a/webgl/lessons/pt-br/webgl-2d-scale.html
+++ b/webgl/lessons/pt-br/webgl-2d-scale.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-2d-translation.html b/webgl/lessons/pt-br/webgl-2d-translation.html
index e9d9582a9..c03303edc 100644
--- a/webgl/lessons/pt-br/webgl-2d-translation.html
+++ b/webgl/lessons/pt-br/webgl-2d-translation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-2d-vs-3d-library.html b/webgl/lessons/pt-br/webgl-2d-vs-3d-library.html
index 72b6ea308..79e98a7c7 100644
--- a/webgl/lessons/pt-br/webgl-2d-vs-3d-library.html
+++ b/webgl/lessons/pt-br/webgl-2d-vs-3d-library.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-camera.html b/webgl/lessons/pt-br/webgl-3d-camera.html
index f11fa7874..4cc0bc761 100644
--- a/webgl/lessons/pt-br/webgl-3d-camera.html
+++ b/webgl/lessons/pt-br/webgl-3d-camera.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-geometry-lathe.html b/webgl/lessons/pt-br/webgl-3d-geometry-lathe.html
index 91b13325c..5a0f1c210 100644
--- a/webgl/lessons/pt-br/webgl-3d-geometry-lathe.html
+++ b/webgl/lessons/pt-br/webgl-3d-geometry-lathe.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-lighting-directional.html b/webgl/lessons/pt-br/webgl-3d-lighting-directional.html
index 43c5e72e2..91600bd99 100644
--- a/webgl/lessons/pt-br/webgl-3d-lighting-directional.html
+++ b/webgl/lessons/pt-br/webgl-3d-lighting-directional.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-lighting-normal-mapping.html b/webgl/lessons/pt-br/webgl-3d-lighting-normal-mapping.html
index fe4d6ce22..3c5823e7f 100644
--- a/webgl/lessons/pt-br/webgl-3d-lighting-normal-mapping.html
+++ b/webgl/lessons/pt-br/webgl-3d-lighting-normal-mapping.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-lighting-point.html b/webgl/lessons/pt-br/webgl-3d-lighting-point.html
index 21def704f..f2bd45dda 100644
--- a/webgl/lessons/pt-br/webgl-3d-lighting-point.html
+++ b/webgl/lessons/pt-br/webgl-3d-lighting-point.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-lighting-spot.html b/webgl/lessons/pt-br/webgl-3d-lighting-spot.html
index fadb6e9a0..eab6bfab2 100644
--- a/webgl/lessons/pt-br/webgl-3d-lighting-spot.html
+++ b/webgl/lessons/pt-br/webgl-3d-lighting-spot.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-orthographic.html b/webgl/lessons/pt-br/webgl-3d-orthographic.html
index 72e3afb79..655de87e7 100644
--- a/webgl/lessons/pt-br/webgl-3d-orthographic.html
+++ b/webgl/lessons/pt-br/webgl-3d-orthographic.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-perspective-correct-texturemapping.html b/webgl/lessons/pt-br/webgl-3d-perspective-correct-texturemapping.html
index e4977d766..3a3edf230 100644
--- a/webgl/lessons/pt-br/webgl-3d-perspective-correct-texturemapping.html
+++ b/webgl/lessons/pt-br/webgl-3d-perspective-correct-texturemapping.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-perspective.html b/webgl/lessons/pt-br/webgl-3d-perspective.html
index 9c3cfb102..829e20e6b 100644
--- a/webgl/lessons/pt-br/webgl-3d-perspective.html
+++ b/webgl/lessons/pt-br/webgl-3d-perspective.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-3d-textures.html b/webgl/lessons/pt-br/webgl-3d-textures.html
index a190f9904..4f1afb5f6 100644
--- a/webgl/lessons/pt-br/webgl-3d-textures.html
+++ b/webgl/lessons/pt-br/webgl-3d-textures.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-and-alpha.html b/webgl/lessons/pt-br/webgl-and-alpha.html
index 0f1eb3a69..25d132903 100644
--- a/webgl/lessons/pt-br/webgl-and-alpha.html
+++ b/webgl/lessons/pt-br/webgl-and-alpha.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-animation.html b/webgl/lessons/pt-br/webgl-animation.html
index ba71e5691..bb2c11751 100644
--- a/webgl/lessons/pt-br/webgl-animation.html
+++ b/webgl/lessons/pt-br/webgl-animation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-anti-patterns.html b/webgl/lessons/pt-br/webgl-anti-patterns.html
index bd5384105..ca4da0f3d 100644
--- a/webgl/lessons/pt-br/webgl-anti-patterns.html
+++ b/webgl/lessons/pt-br/webgl-anti-patterns.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-attributes.html b/webgl/lessons/pt-br/webgl-attributes.html
index c9f9dbf8f..05b79b8a6 100644
--- a/webgl/lessons/pt-br/webgl-attributes.html
+++ b/webgl/lessons/pt-br/webgl-attributes.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-boilerplate.html b/webgl/lessons/pt-br/webgl-boilerplate.html
index c0538aa68..dbba40078 100644
--- a/webgl/lessons/pt-br/webgl-boilerplate.html
+++ b/webgl/lessons/pt-br/webgl-boilerplate.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-cors-permission.html b/webgl/lessons/pt-br/webgl-cors-permission.html
index 046469993..835eab6e1 100644
--- a/webgl/lessons/pt-br/webgl-cors-permission.html
+++ b/webgl/lessons/pt-br/webgl-cors-permission.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-cross-platform-issues.html b/webgl/lessons/pt-br/webgl-cross-platform-issues.html
index 4d12fca2b..57a9638ec 100644
--- a/webgl/lessons/pt-br/webgl-cross-platform-issues.html
+++ b/webgl/lessons/pt-br/webgl-cross-platform-issues.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-cube-maps.html b/webgl/lessons/pt-br/webgl-cube-maps.html
index 76775880e..a9e637b6f 100644
--- a/webgl/lessons/pt-br/webgl-cube-maps.html
+++ b/webgl/lessons/pt-br/webgl-cube-maps.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-data-textures.html b/webgl/lessons/pt-br/webgl-data-textures.html
index be64eac83..40231dce9 100644
--- a/webgl/lessons/pt-br/webgl-data-textures.html
+++ b/webgl/lessons/pt-br/webgl-data-textures.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-drawing-multiple-things.html b/webgl/lessons/pt-br/webgl-drawing-multiple-things.html
index 791bb6764..9fc5a122d 100644
--- a/webgl/lessons/pt-br/webgl-drawing-multiple-things.html
+++ b/webgl/lessons/pt-br/webgl-drawing-multiple-things.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-drawing-without-data.html b/webgl/lessons/pt-br/webgl-drawing-without-data.html
index 3f53e9e1c..9df3b8aa9 100644
--- a/webgl/lessons/pt-br/webgl-drawing-without-data.html
+++ b/webgl/lessons/pt-br/webgl-drawing-without-data.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-environment-maps.html b/webgl/lessons/pt-br/webgl-environment-maps.html
index 3b3b0cb2c..bb6980614 100644
--- a/webgl/lessons/pt-br/webgl-environment-maps.html
+++ b/webgl/lessons/pt-br/webgl-environment-maps.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-fog.html b/webgl/lessons/pt-br/webgl-fog.html
index 03a2ed051..064facf87 100644
--- a/webgl/lessons/pt-br/webgl-fog.html
+++ b/webgl/lessons/pt-br/webgl-fog.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-framebuffers.html b/webgl/lessons/pt-br/webgl-framebuffers.html
index d07daa5e9..a552f34ff 100644
--- a/webgl/lessons/pt-br/webgl-framebuffers.html
+++ b/webgl/lessons/pt-br/webgl-framebuffers.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-fundamentals.html b/webgl/lessons/pt-br/webgl-fundamentals.html
index d6b24cdb9..8157218b8 100644
--- a/webgl/lessons/pt-br/webgl-fundamentals.html
+++ b/webgl/lessons/pt-br/webgl-fundamentals.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-getting-webgl2.html b/webgl/lessons/pt-br/webgl-getting-webgl2.html
index 85e10da8f..9c66766c8 100644
--- a/webgl/lessons/pt-br/webgl-getting-webgl2.html
+++ b/webgl/lessons/pt-br/webgl-getting-webgl2.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-gpgpu.html b/webgl/lessons/pt-br/webgl-gpgpu.html
index a2ca68c8e..ad1398ec2 100644
--- a/webgl/lessons/pt-br/webgl-gpgpu.html
+++ b/webgl/lessons/pt-br/webgl-gpgpu.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-how-it-works.html b/webgl/lessons/pt-br/webgl-how-it-works.html
index aee871edf..b604705de 100644
--- a/webgl/lessons/pt-br/webgl-how-it-works.html
+++ b/webgl/lessons/pt-br/webgl-how-it-works.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-image-processing-continued.html b/webgl/lessons/pt-br/webgl-image-processing-continued.html
index 33dc9b59c..3571daa0f 100644
--- a/webgl/lessons/pt-br/webgl-image-processing-continued.html
+++ b/webgl/lessons/pt-br/webgl-image-processing-continued.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
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@@ -68,6 +68,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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index 23bb1dd89..420c95f94 100644
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/pt-br/webgl-qna-is-there-the-notion-of-a-generalized-vertex-and-fragment-shader-.html b/webgl/lessons/pt-br/webgl-qna-is-there-the-notion-of-a-generalized-vertex-and-fragment-shader-.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/pt-br/webgl-qna-setting-the-values-of-a-struct-array-from-js-to-glsl.html b/webgl/lessons/pt-br/webgl-qna-setting-the-values-of-a-struct-array-from-js-to-glsl.html
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diff --git a/webgl/lessons/pt-br/webgl-qna-show-a-night-view-vs-a-day-view-on-a-3d-earth-sphere.html b/webgl/lessons/pt-br/webgl-qna-show-a-night-view-vs-a-day-view-on-a-3d-earth-sphere.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/pt-br/webgl-qna-tex-image-texture_2d-level-0-is-incurring-lazy-initialization.html b/webgl/lessons/pt-br/webgl-qna-tex-image-texture_2d-level-0-is-incurring-lazy-initialization.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/pt-br/webgl-qna-what-is-the-local-origin-of-a-3d-model-.html b/webgl/lessons/pt-br/webgl-qna-what-is-the-local-origin-of-a-3d-model-.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/pt-br/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html b/webgl/lessons/pt-br/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html
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@@ -68,6 +68,7 @@
 
 
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-tips.html b/webgl/lessons/pt-br/webgl-tips.html
index 0c9701b85..2d4bba330 100644
--- a/webgl/lessons/pt-br/webgl-tips.html
+++ b/webgl/lessons/pt-br/webgl-tips.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl-visualizing-the-camera.html b/webgl/lessons/pt-br/webgl-visualizing-the-camera.html
index ad60f478c..c2a642371 100644
--- a/webgl/lessons/pt-br/webgl-visualizing-the-camera.html
+++ b/webgl/lessons/pt-br/webgl-visualizing-the-camera.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl1-to-webgl2-fundamentals.html b/webgl/lessons/pt-br/webgl1-to-webgl2-fundamentals.html
index 1d6983442..7bb260aa9 100644
--- a/webgl/lessons/pt-br/webgl1-to-webgl2-fundamentals.html
+++ b/webgl/lessons/pt-br/webgl1-to-webgl2-fundamentals.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl1-to-webgl2.html b/webgl/lessons/pt-br/webgl1-to-webgl2.html
index ac233bdc2..dd8259460 100644
--- a/webgl/lessons/pt-br/webgl1-to-webgl2.html
+++ b/webgl/lessons/pt-br/webgl1-to-webgl2.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/pt-br/webgl2-whats-new.html b/webgl/lessons/pt-br/webgl2-whats-new.html
index a50c491ec..66de9ba3d 100644
--- a/webgl/lessons/pt-br/webgl2-whats-new.html
+++ b/webgl/lessons/pt-br/webgl2-whats-new.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Índice</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/resources/lesson.css b/webgl/lessons/resources/lesson.css
index 990d2391c..f6d8127b7 100644
--- a/webgl/lessons/resources/lesson.css
+++ b/webgl/lessons/resources/lesson.css
@@ -132,6 +132,7 @@ a>img {
 .webgl_navbar {
     background: black;
     color: white;
+    color-scheme: dark;
 }
 .webgl_navbar a {
     color: white;
@@ -506,6 +507,9 @@ pre.prettyprint, code.prettyprint {
     li {
       margin-left: 5px;
     }
+    #search {
+      display: none;
+    }
 }
 
 @media (max-width: 720px) {
diff --git a/webgl/lessons/resources/lesson.js b/webgl/lessons/resources/lesson.js
index 8775e033e..e2250956f 100644
--- a/webgl/lessons/resources/lesson.js
+++ b/webgl/lessons/resources/lesson.js
@@ -84,6 +84,17 @@ $(document).ready(function($) {
     window.location.href = this.dataset.href;
   });
 
+  $('#search').on('keyup', function(e) {
+    if (e.key !== 'Enter') {
+      return;
+    }
+    const a = document.createElement('a');
+    a.target = '_blank';
+    const u = new URL('https://google.com/search');
+    u.searchParams.set('q', `site:webgl2fundamentals.org ${this.value}`);
+    a.href = u.toString();
+    a.click();
+  });
 });
 }(jQuery));
 
diff --git a/webgl/lessons/webgl-2-textures.html b/webgl/lessons/webgl-2-textures.html
index 1b0f644b4..366019407 100644
--- a/webgl/lessons/webgl-2-textures.html
+++ b/webgl/lessons/webgl-2-textures.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-2d-drawimage.html b/webgl/lessons/webgl-2d-drawimage.html
index 566fc5714..e126268a0 100644
--- a/webgl/lessons/webgl-2d-drawimage.html
+++ b/webgl/lessons/webgl-2d-drawimage.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-2d-matrices.html b/webgl/lessons/webgl-2d-matrices.html
index f79df152c..ccb0ddf76 100644
--- a/webgl/lessons/webgl-2d-matrices.html
+++ b/webgl/lessons/webgl-2d-matrices.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-2d-matrix-stack.html b/webgl/lessons/webgl-2d-matrix-stack.html
index 8e931ecc7..96a003856 100644
--- a/webgl/lessons/webgl-2d-matrix-stack.html
+++ b/webgl/lessons/webgl-2d-matrix-stack.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-2d-rotation.html b/webgl/lessons/webgl-2d-rotation.html
index 7b99cd428..a727a6698 100644
--- a/webgl/lessons/webgl-2d-rotation.html
+++ b/webgl/lessons/webgl-2d-rotation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-2d-scale.html b/webgl/lessons/webgl-2d-scale.html
index 0d56af152..cd38dba27 100644
--- a/webgl/lessons/webgl-2d-scale.html
+++ b/webgl/lessons/webgl-2d-scale.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-2d-translation.html b/webgl/lessons/webgl-2d-translation.html
index 91e59bd16..2cf7a6835 100644
--- a/webgl/lessons/webgl-2d-translation.html
+++ b/webgl/lessons/webgl-2d-translation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-2d-vs-3d-library.html b/webgl/lessons/webgl-2d-vs-3d-library.html
index 4492995a3..f7fd3fb27 100644
--- a/webgl/lessons/webgl-2d-vs-3d-library.html
+++ b/webgl/lessons/webgl-2d-vs-3d-library.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-camera.html b/webgl/lessons/webgl-3d-camera.html
index f33b4fe34..6a0a56bce 100644
--- a/webgl/lessons/webgl-3d-camera.html
+++ b/webgl/lessons/webgl-3d-camera.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-geometry-lathe.html b/webgl/lessons/webgl-3d-geometry-lathe.html
index 212a483f9..a07283d97 100644
--- a/webgl/lessons/webgl-3d-geometry-lathe.html
+++ b/webgl/lessons/webgl-3d-geometry-lathe.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-lighting-directional.html b/webgl/lessons/webgl-3d-lighting-directional.html
index 369b0df2d..141860b19 100644
--- a/webgl/lessons/webgl-3d-lighting-directional.html
+++ b/webgl/lessons/webgl-3d-lighting-directional.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-lighting-normal-mapping.html b/webgl/lessons/webgl-3d-lighting-normal-mapping.html
index 93631697b..0a50c06d2 100644
--- a/webgl/lessons/webgl-3d-lighting-normal-mapping.html
+++ b/webgl/lessons/webgl-3d-lighting-normal-mapping.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-lighting-point.html b/webgl/lessons/webgl-3d-lighting-point.html
index 8470d6a78..f97035cf7 100644
--- a/webgl/lessons/webgl-3d-lighting-point.html
+++ b/webgl/lessons/webgl-3d-lighting-point.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-lighting-spot.html b/webgl/lessons/webgl-3d-lighting-spot.html
index 181e62b91..de59d3540 100644
--- a/webgl/lessons/webgl-3d-lighting-spot.html
+++ b/webgl/lessons/webgl-3d-lighting-spot.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-orthographic.html b/webgl/lessons/webgl-3d-orthographic.html
index 6ee6c6650..0db40e951 100644
--- a/webgl/lessons/webgl-3d-orthographic.html
+++ b/webgl/lessons/webgl-3d-orthographic.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-perspective-correct-texturemapping.html b/webgl/lessons/webgl-3d-perspective-correct-texturemapping.html
index 2638b7cdc..c7a2b944e 100644
--- a/webgl/lessons/webgl-3d-perspective-correct-texturemapping.html
+++ b/webgl/lessons/webgl-3d-perspective-correct-texturemapping.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-perspective.html b/webgl/lessons/webgl-3d-perspective.html
index 4c3a4db13..a0c77de66 100644
--- a/webgl/lessons/webgl-3d-perspective.html
+++ b/webgl/lessons/webgl-3d-perspective.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-3d-textures.html b/webgl/lessons/webgl-3d-textures.html
index c74d582d3..7ced14f3d 100644
--- a/webgl/lessons/webgl-3d-textures.html
+++ b/webgl/lessons/webgl-3d-textures.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-and-alpha.html b/webgl/lessons/webgl-and-alpha.html
index e5a66386a..2afa70895 100644
--- a/webgl/lessons/webgl-and-alpha.html
+++ b/webgl/lessons/webgl-and-alpha.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-animation.html b/webgl/lessons/webgl-animation.html
index dc96bb799..65fc576d2 100644
--- a/webgl/lessons/webgl-animation.html
+++ b/webgl/lessons/webgl-animation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-anti-patterns.html b/webgl/lessons/webgl-anti-patterns.html
index 22d6be5fb..eb6c95b5a 100644
--- a/webgl/lessons/webgl-anti-patterns.html
+++ b/webgl/lessons/webgl-anti-patterns.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-attributes.html b/webgl/lessons/webgl-attributes.html
index 481da6249..6ef36a97c 100644
--- a/webgl/lessons/webgl-attributes.html
+++ b/webgl/lessons/webgl-attributes.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-boilerplate.html b/webgl/lessons/webgl-boilerplate.html
index ccd29d819..b238fc95b 100644
--- a/webgl/lessons/webgl-boilerplate.html
+++ b/webgl/lessons/webgl-boilerplate.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-cors-permission.html b/webgl/lessons/webgl-cors-permission.html
index e2b53b4e8..f807999a1 100644
--- a/webgl/lessons/webgl-cors-permission.html
+++ b/webgl/lessons/webgl-cors-permission.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-cross-platform-issues.html b/webgl/lessons/webgl-cross-platform-issues.html
index a8ba05700..32049e654 100644
--- a/webgl/lessons/webgl-cross-platform-issues.html
+++ b/webgl/lessons/webgl-cross-platform-issues.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-cube-maps.html b/webgl/lessons/webgl-cube-maps.html
index 6de065697..51dd5bd3d 100644
--- a/webgl/lessons/webgl-cube-maps.html
+++ b/webgl/lessons/webgl-cube-maps.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-data-textures.html b/webgl/lessons/webgl-data-textures.html
index e04a0a884..c259134d0 100644
--- a/webgl/lessons/webgl-data-textures.html
+++ b/webgl/lessons/webgl-data-textures.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-drawing-multiple-things.html b/webgl/lessons/webgl-drawing-multiple-things.html
index e1fc8fb0b..2da3e958d 100644
--- a/webgl/lessons/webgl-drawing-multiple-things.html
+++ b/webgl/lessons/webgl-drawing-multiple-things.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-drawing-without-data.html b/webgl/lessons/webgl-drawing-without-data.html
index 655ef7118..67fda072a 100644
--- a/webgl/lessons/webgl-drawing-without-data.html
+++ b/webgl/lessons/webgl-drawing-without-data.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-environment-maps.html b/webgl/lessons/webgl-environment-maps.html
index 422318735..c846fedd4 100644
--- a/webgl/lessons/webgl-environment-maps.html
+++ b/webgl/lessons/webgl-environment-maps.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-fog.html b/webgl/lessons/webgl-fog.html
index fdbe8429b..729c2e7d6 100644
--- a/webgl/lessons/webgl-fog.html
+++ b/webgl/lessons/webgl-fog.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-framebuffers.html b/webgl/lessons/webgl-framebuffers.html
index 27d8aea41..f6269e3ec 100644
--- a/webgl/lessons/webgl-framebuffers.html
+++ b/webgl/lessons/webgl-framebuffers.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-fundamentals.html b/webgl/lessons/webgl-fundamentals.html
index c968e4e89..d92f22851 100644
--- a/webgl/lessons/webgl-fundamentals.html
+++ b/webgl/lessons/webgl-fundamentals.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-getting-webgl2.html b/webgl/lessons/webgl-getting-webgl2.html
index 3efb5dfec..4f0741f2f 100644
--- a/webgl/lessons/webgl-getting-webgl2.html
+++ b/webgl/lessons/webgl-getting-webgl2.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-gpgpu.html b/webgl/lessons/webgl-gpgpu.html
index c9a666a14..6a2c6bce7 100644
--- a/webgl/lessons/webgl-gpgpu.html
+++ b/webgl/lessons/webgl-gpgpu.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-how-it-works.html b/webgl/lessons/webgl-how-it-works.html
index e07965397..9fc8dcc8a 100644
--- a/webgl/lessons/webgl-how-it-works.html
+++ b/webgl/lessons/webgl-how-it-works.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-image-processing-continued.html b/webgl/lessons/webgl-image-processing-continued.html
index d6488c0ab..8b2864ed4 100644
--- a/webgl/lessons/webgl-image-processing-continued.html
+++ b/webgl/lessons/webgl-image-processing-continued.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-image-processing.html b/webgl/lessons/webgl-image-processing.html
index d9848c408..f791b1de0 100644
--- a/webgl/lessons/webgl-image-processing.html
+++ b/webgl/lessons/webgl-image-processing.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-indexed-vertices.html b/webgl/lessons/webgl-indexed-vertices.html
index becb079c7..81664c791 100644
--- a/webgl/lessons/webgl-indexed-vertices.html
+++ b/webgl/lessons/webgl-indexed-vertices.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-instanced-drawing.html b/webgl/lessons/webgl-instanced-drawing.html
index 8275b3811..d0591e287 100644
--- a/webgl/lessons/webgl-instanced-drawing.html
+++ b/webgl/lessons/webgl-instanced-drawing.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
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@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-qna-sorting-and-optimizing-instanced-rendering.html b/webgl/lessons/webgl-qna-sorting-and-optimizing-instanced-rendering.html
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+++ b/webgl/lessons/webgl-qna-sorting-and-optimizing-instanced-rendering.html
@@ -122,6 +122,7 @@
 
 
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diff --git a/webgl/lessons/webgl-qna-tex-image-texture_2d-level-0-is-incurring-lazy-initialization.html b/webgl/lessons/webgl-qna-tex-image-texture_2d-level-0-is-incurring-lazy-initialization.html
index a11530943..ab626cb37 100644
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@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
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diff --git a/webgl/lessons/webgl-qna-the-fastest-way-to-draw-many-circles.html b/webgl/lessons/webgl-qna-the-fastest-way-to-draw-many-circles.html
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+++ b/webgl/lessons/webgl-qna-the-fastest-way-to-draw-many-circles.html
@@ -122,6 +122,7 @@
 
 
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diff --git a/webgl/lessons/webgl-qna-webgl-2d-tilemaps.html b/webgl/lessons/webgl-qna-webgl-2d-tilemaps.html
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+++ b/webgl/lessons/webgl-qna-webgl-2d-tilemaps.html
@@ -122,6 +122,7 @@
 
 
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diff --git a/webgl/lessons/webgl-qna-webgl-droste-effect.html b/webgl/lessons/webgl-qna-webgl-droste-effect.html
index 26d689279..47647a871 100644
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+++ b/webgl/lessons/webgl-qna-webgl-droste-effect.html
@@ -122,6 +122,7 @@
 
 
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diff --git a/webgl/lessons/webgl-qna-what-is-the-local-origin-of-a-3d-model-.html b/webgl/lessons/webgl-qna-what-is-the-local-origin-of-a-3d-model-.html
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@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-qna-when-to-choose-highp--mediump--lowp-in-shaders.html b/webgl/lessons/webgl-qna-when-to-choose-highp--mediump--lowp-in-shaders.html
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@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-qna-working-around-gl_pointsize-limitations-webgl.html b/webgl/lessons/webgl-qna-working-around-gl_pointsize-limitations-webgl.html
index 080d10f63..840aba074 100644
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+++ b/webgl/lessons/webgl-qna-working-around-gl_pointsize-limitations-webgl.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html b/webgl/lessons/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html
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@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
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diff --git a/webgl/lessons/webgl-qna.html b/webgl/lessons/webgl-qna.html
index 941c3362e..a4130d9f0 100644
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@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
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diff --git a/webgl/lessons/webgl-readpixels.html b/webgl/lessons/webgl-readpixels.html
index 37a6d6bf2..039207eb5 100644
--- a/webgl/lessons/webgl-readpixels.html
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@@ -122,6 +122,7 @@
 
 
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diff --git a/webgl/lessons/webgl-references.html b/webgl/lessons/webgl-references.html
index 82d4d2b9e..cf6bc2390 100644
--- a/webgl/lessons/webgl-references.html
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@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-render-to-texture.html b/webgl/lessons/webgl-render-to-texture.html
index fbcad7a7f..2fea8a777 100644
--- a/webgl/lessons/webgl-render-to-texture.html
+++ b/webgl/lessons/webgl-render-to-texture.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-resizing-the-canvas.html b/webgl/lessons/webgl-resizing-the-canvas.html
index d4c9b44c7..398738a7a 100644
--- a/webgl/lessons/webgl-resizing-the-canvas.html
+++ b/webgl/lessons/webgl-resizing-the-canvas.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-scene-graph.html b/webgl/lessons/webgl-scene-graph.html
index 36610f0ea..636e07a67 100644
--- a/webgl/lessons/webgl-scene-graph.html
+++ b/webgl/lessons/webgl-scene-graph.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-setup-and-installation.html b/webgl/lessons/webgl-setup-and-installation.html
index 6016ea6ad..a223b54b2 100644
--- a/webgl/lessons/webgl-setup-and-installation.html
+++ b/webgl/lessons/webgl-setup-and-installation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
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diff --git a/webgl/lessons/webgl-shaders-and-glsl.html b/webgl/lessons/webgl-shaders-and-glsl.html
index 4c8dafc29..a7fd50b54 100644
--- a/webgl/lessons/webgl-shaders-and-glsl.html
+++ b/webgl/lessons/webgl-shaders-and-glsl.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-shadertoy.html b/webgl/lessons/webgl-shadertoy.html
index b17d5434a..133e82434 100644
--- a/webgl/lessons/webgl-shadertoy.html
+++ b/webgl/lessons/webgl-shadertoy.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-shadows-continued.html b/webgl/lessons/webgl-shadows-continued.html
index 227383406..8e848bbda 100644
--- a/webgl/lessons/webgl-shadows-continued.html
+++ b/webgl/lessons/webgl-shadows-continued.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-shadows.html b/webgl/lessons/webgl-shadows.html
index af4e210e5..99fc447fc 100644
--- a/webgl/lessons/webgl-shadows.html
+++ b/webgl/lessons/webgl-shadows.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-skinning.html b/webgl/lessons/webgl-skinning.html
index e74bd08a8..ef6d3788c 100644
--- a/webgl/lessons/webgl-skinning.html
+++ b/webgl/lessons/webgl-skinning.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-skybox.html b/webgl/lessons/webgl-skybox.html
index ca330b4ac..f93cb6bcd 100644
--- a/webgl/lessons/webgl-skybox.html
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@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-smallest-programs.html b/webgl/lessons/webgl-smallest-programs.html
index 70105db6c..d0e05737a 100644
--- a/webgl/lessons/webgl-smallest-programs.html
+++ b/webgl/lessons/webgl-smallest-programs.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-sprites.html b/webgl/lessons/webgl-sprites.html
index d03cf7bf6..4995b2ebe 100644
--- a/webgl/lessons/webgl-sprites.html
+++ b/webgl/lessons/webgl-sprites.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-state-diagram.html b/webgl/lessons/webgl-state-diagram.html
index c643fed19..8f74e09f7 100644
--- a/webgl/lessons/webgl-state-diagram.html
+++ b/webgl/lessons/webgl-state-diagram.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-text-canvas2d.html b/webgl/lessons/webgl-text-canvas2d.html
index ff2f3fa4c..d9c385d98 100644
--- a/webgl/lessons/webgl-text-canvas2d.html
+++ b/webgl/lessons/webgl-text-canvas2d.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-text-glyphs.html b/webgl/lessons/webgl-text-glyphs.html
index 1b68301cd..06a504781 100644
--- a/webgl/lessons/webgl-text-glyphs.html
+++ b/webgl/lessons/webgl-text-glyphs.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-text-html.html b/webgl/lessons/webgl-text-html.html
index 7538a8f15..651e4fb86 100644
--- a/webgl/lessons/webgl-text-html.html
+++ b/webgl/lessons/webgl-text-html.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-text-texture.html b/webgl/lessons/webgl-text-texture.html
index d8fdee919..842e2fc27 100644
--- a/webgl/lessons/webgl-text-texture.html
+++ b/webgl/lessons/webgl-text-texture.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/webgl-texture-units.html b/webgl/lessons/webgl-texture-units.html
index 57d8d120f..6d7ea3177 100644
--- a/webgl/lessons/webgl-texture-units.html
+++ b/webgl/lessons/webgl-texture-units.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
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 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-tips.html b/webgl/lessons/webgl-tips.html
index 5c4bd1986..a102786db 100644
--- a/webgl/lessons/webgl-tips.html
+++ b/webgl/lessons/webgl-tips.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
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 <div class="webgl_header">
diff --git a/webgl/lessons/webgl-visualizing-the-camera.html b/webgl/lessons/webgl-visualizing-the-camera.html
index 02b7e1872..fe95e7267 100644
--- a/webgl/lessons/webgl-visualizing-the-camera.html
+++ b/webgl/lessons/webgl-visualizing-the-camera.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/webgl1-to-webgl2-fundamentals.html b/webgl/lessons/webgl1-to-webgl2-fundamentals.html
index 93a6d35e9..9bf99d0fb 100644
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+++ b/webgl/lessons/webgl1-to-webgl2-fundamentals.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
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diff --git a/webgl/lessons/webgl1-to-webgl2.html b/webgl/lessons/webgl1-to-webgl2.html
index eabd2039e..fe76d089f 100644
--- a/webgl/lessons/webgl1-to-webgl2.html
+++ b/webgl/lessons/webgl1-to-webgl2.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
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diff --git a/webgl/lessons/webgl2-whats-new.html b/webgl/lessons/webgl2-whats-new.html
index 7c16bab31..037e39105 100644
--- a/webgl/lessons/webgl2-whats-new.html
+++ b/webgl/lessons/webgl2-whats-new.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">Table of Contents</a>
+    <input type="search" placeholder="?" id="search">
   </div>
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 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/atom.xml b/webgl/lessons/zh_cn/atom.xml
index 2486016ce..acd0b286d 100644
--- a/webgl/lessons/zh_cn/atom.xml
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     <id></id>
     <title>WebGL2 理论基础</title>
-    <updated>2024-05-03T07:09:01.000Z</updated>
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     <author>
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         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
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-        <published>2024-05-03T07:09:01.000Z</published>
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     <entry>
         <title type="html"><![CDATA[WebGL2 实现 DrawImage 接口]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-drawimage.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-drawimage.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
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             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
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     <entry>
         <title type="html"><![CDATA[WebGL2 二维矩阵]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-matrices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-matrices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
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     <entry>
         <title type="html"><![CDATA[WebGL2 实现二维矩阵栈]]></title>
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         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-matrix-stack.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
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             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
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     <entry>
         <title type="html"><![CDATA[WebGL2 二维旋转]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-rotation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-rotation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
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-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 二维缩放]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-scale.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-scale.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 二维平移]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-translation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-2d-translation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 三维相机]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-camera.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-camera.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 三维几何加工]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-geometry-lathe.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-geometry-lathe.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 三维方向光源]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-lighting-directional.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-lighting-directional.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 三维点光源]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-lighting-point.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-lighting-point.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 三维聚光灯]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-lighting-spot.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-lighting-spot.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 三维正射投影]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-orthographic.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-orthographic.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 3D 纹理映射的透视纠正]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-perspective-correct-texturemapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-perspective-correct-texturemapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 三维透视投影]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-perspective.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-perspective.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 纹理]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-3d-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 样板]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-boilerplate.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-boilerplate.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 跨域图像]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-cors-permission.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-cors-permission.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 立方体贴图]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-cube-maps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-cube-maps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 三维数据纹理]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-data-textures.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-data-textures.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 绘制多个物体]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-drawing-multiple-things.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-drawing-multiple-things.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 环境贴图 (反射)]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-environment-maps.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-environment-maps.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 雾]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-fog.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-fog.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2的基本原理]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[怎样使用WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-getting-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-getting-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 是如何工作的]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-how-it-works.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-how-it-works.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 进一步处理图像]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-image-processing-continued.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-image-processing-continued.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 图像处理]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-image-processing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-image-processing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 顶点索引]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-indexed-vertices.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-indexed-vertices.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 性能优化 - 实例化绘制]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-instanced-drawing.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-instanced-drawing.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 码少趣多]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-less-code-more-fun.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-less-code-more-fun.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 加载带 Mtl 的 Obj]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-load-obj-w-mtl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-load-obj-w-mtl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 加载 Obj 文件]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-load-obj.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-load-obj.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 矩阵命名]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-matrix-naming.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-matrix-naming.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 Picking]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-picking.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-picking.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 平面的和透视的投影映射]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-planar-projection-mapping.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-planar-projection-mapping.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 渲染到纹理]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-render-to-texture.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-render-to-texture.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 重置画布尺寸]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-resizing-the-canvas.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-resizing-the-canvas.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 - 场景图]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-scene-graph.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-scene-graph.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 设置和安装]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-setup-and-installation.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-setup-and-installation.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 着色器和 GLSL 语言]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-shaders-and-glsl.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-shaders-and-glsl.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 阴影（续）]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-shadows-continued.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-shadows-continued.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 阴影]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-shadows.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-shadows.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 蒙皮]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-skinning.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-skinning.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 天空盒]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-skybox.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-skybox.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 最小的程序]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-smallest-programs.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-smallest-programs.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 精灵]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-sprites.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-sprites.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 State Diagram]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-state-diagram.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-state-diagram.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 文字 - 二维 Canvas]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-text-canvas2d.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-text-canvas2d.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 文字 - 使用字形纹理]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-text-glyphs.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-text-glyphs.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 文字 - HTML]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-text-html.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-text-html.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2 文字 - 使用纹理]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-text-texture.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl-text-texture.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[相较于WebGLFundamentals.org的不同之处]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl1-to-webgl2-fundamentals.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl1-to-webgl2-fundamentals.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[迁移WebGL1到WebGL2]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl1-to-webgl2.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl1-to-webgl2.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
     <entry>
         <title type="html"><![CDATA[WebGL2有什么新内容]]></title>
         <id>https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl2-whats-new.html</id>
         <link href="https://webgl2fundamentals.org/webgl/lessons/zh_cn/webgl2-whats-new.html">
         </link>
-        <updated>2024-05-03T07:09:01.000Z</updated>
+        <updated>2024-09-23T22:07:20.000Z</updated>
         <author>
             <name>WebGL2Fundamentals Contributors</name>
             <uri>https://webgl2fundamentals.org/contributors.html</uri>
         </author>
-        <published>2024-05-03T07:09:01.000Z</published>
+        <published>2024-09-23T22:07:20.000Z</published>
     </entry>
 </feed>
\ No newline at end of file
diff --git a/webgl/lessons/zh_cn/webgl-2-textures.html b/webgl/lessons/zh_cn/webgl-2-textures.html
index d7000140e..f6ce36962 100644
--- a/webgl/lessons/zh_cn/webgl-2-textures.html
+++ b/webgl/lessons/zh_cn/webgl-2-textures.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-2d-drawimage.html b/webgl/lessons/zh_cn/webgl-2d-drawimage.html
index 595b94089..d24cc95a5 100644
--- a/webgl/lessons/zh_cn/webgl-2d-drawimage.html
+++ b/webgl/lessons/zh_cn/webgl-2d-drawimage.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-2d-matrices.html b/webgl/lessons/zh_cn/webgl-2d-matrices.html
index 34289448c..19e3a4bf6 100644
--- a/webgl/lessons/zh_cn/webgl-2d-matrices.html
+++ b/webgl/lessons/zh_cn/webgl-2d-matrices.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-2d-matrix-stack.html b/webgl/lessons/zh_cn/webgl-2d-matrix-stack.html
index a239ecffc..0e93c9b11 100644
--- a/webgl/lessons/zh_cn/webgl-2d-matrix-stack.html
+++ b/webgl/lessons/zh_cn/webgl-2d-matrix-stack.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-2d-rotation.html b/webgl/lessons/zh_cn/webgl-2d-rotation.html
index b9315eb34..739b0131a 100644
--- a/webgl/lessons/zh_cn/webgl-2d-rotation.html
+++ b/webgl/lessons/zh_cn/webgl-2d-rotation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-2d-scale.html b/webgl/lessons/zh_cn/webgl-2d-scale.html
index 03526b3dd..187076eef 100644
--- a/webgl/lessons/zh_cn/webgl-2d-scale.html
+++ b/webgl/lessons/zh_cn/webgl-2d-scale.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-2d-translation.html b/webgl/lessons/zh_cn/webgl-2d-translation.html
index 3fd138564..aa65aad64 100644
--- a/webgl/lessons/zh_cn/webgl-2d-translation.html
+++ b/webgl/lessons/zh_cn/webgl-2d-translation.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-2d-vs-3d-library.html b/webgl/lessons/zh_cn/webgl-2d-vs-3d-library.html
index 373640e45..4c67ded89 100644
--- a/webgl/lessons/zh_cn/webgl-2d-vs-3d-library.html
+++ b/webgl/lessons/zh_cn/webgl-2d-vs-3d-library.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-3d-camera.html b/webgl/lessons/zh_cn/webgl-3d-camera.html
index fe483c84a..bd252d2ba 100644
--- a/webgl/lessons/zh_cn/webgl-3d-camera.html
+++ b/webgl/lessons/zh_cn/webgl-3d-camera.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-3d-geometry-lathe.html b/webgl/lessons/zh_cn/webgl-3d-geometry-lathe.html
index 42d3e68b1..36dfaf04f 100644
--- a/webgl/lessons/zh_cn/webgl-3d-geometry-lathe.html
+++ b/webgl/lessons/zh_cn/webgl-3d-geometry-lathe.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-3d-lighting-directional.html b/webgl/lessons/zh_cn/webgl-3d-lighting-directional.html
index 48a9ac88b..f5fc49976 100644
--- a/webgl/lessons/zh_cn/webgl-3d-lighting-directional.html
+++ b/webgl/lessons/zh_cn/webgl-3d-lighting-directional.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-3d-lighting-normal-mapping.html b/webgl/lessons/zh_cn/webgl-3d-lighting-normal-mapping.html
index d76969c7e..0db0ed69c 100644
--- a/webgl/lessons/zh_cn/webgl-3d-lighting-normal-mapping.html
+++ b/webgl/lessons/zh_cn/webgl-3d-lighting-normal-mapping.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
diff --git a/webgl/lessons/zh_cn/webgl-3d-lighting-point.html b/webgl/lessons/zh_cn/webgl-3d-lighting-point.html
index 0d96de186..bc82eafcd 100644
--- a/webgl/lessons/zh_cn/webgl-3d-lighting-point.html
+++ b/webgl/lessons/zh_cn/webgl-3d-lighting-point.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
   </div>
 </div>
 <div class="webgl_header">
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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+++ b/webgl/lessons/zh_cn/webgl-3d-textures.html
@@ -122,6 +122,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-and-alpha.html b/webgl/lessons/zh_cn/webgl-and-alpha.html
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+++ b/webgl/lessons/zh_cn/webgl-and-alpha.html
@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-animation.html b/webgl/lessons/zh_cn/webgl-animation.html
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@@ -68,6 +68,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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+++ b/webgl/lessons/zh_cn/webgl-attributes.html
@@ -68,6 +68,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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+++ b/webgl/lessons/zh_cn/webgl-data-textures.html
@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-indexed-vertices.html b/webgl/lessons/zh_cn/webgl-indexed-vertices.html
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-load-obj-w-mtl.html b/webgl/lessons/zh_cn/webgl-load-obj-w-mtl.html
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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+++ b/webgl/lessons/zh_cn/webgl-multiple-views.html
@@ -68,6 +68,7 @@
 
 
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@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-planar-projection-mapping.html b/webgl/lessons/zh_cn/webgl-planar-projection-mapping.html
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@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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@@ -68,6 +68,7 @@
 
 
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-qna-a-simple-way-to-show-the-load-on-the-gpu-s-vertex-and-fragment-processing-.html b/webgl/lessons/zh_cn/webgl-qna-a-simple-way-to-show-the-load-on-the-gpu-s-vertex-and-fragment-processing-.html
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@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-qna-accessing-textures-by-pixel-coordinate-in-webgl2.html b/webgl/lessons/zh_cn/webgl-qna-accessing-textures-by-pixel-coordinate-in-webgl2.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-qna-apply-a-displacement-map-and-specular-map.html b/webgl/lessons/zh_cn/webgl-qna-apply-a-displacement-map-and-specular-map.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-qna-can-anyone-explain-what-this-glsl-fragment-shader-is-doing-.html b/webgl/lessons/zh_cn/webgl-qna-can-anyone-explain-what-this-glsl-fragment-shader-is-doing-.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-qna-can-i-mute-the-warning-about-vertex-attrib-0-being-disabled-.html b/webgl/lessons/zh_cn/webgl-qna-can-i-mute-the-warning-about-vertex-attrib-0-being-disabled-.html
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@@ -68,6 +68,7 @@
 
 
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diff --git a/webgl/lessons/zh_cn/webgl-qna-working-around-gl_pointsize-limitations-webgl.html b/webgl/lessons/zh_cn/webgl-qna-working-around-gl_pointsize-limitations-webgl.html
index 421025e68..e15e7b379 100644
--- a/webgl/lessons/zh_cn/webgl-qna-working-around-gl_pointsize-limitations-webgl.html
+++ b/webgl/lessons/zh_cn/webgl-qna-working-around-gl_pointsize-limitations-webgl.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html b/webgl/lessons/zh_cn/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html
index 3c6eb300c..85bfa45a8 100644
--- a/webgl/lessons/zh_cn/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html
+++ b/webgl/lessons/zh_cn/webgl-qna-zooming-to-and-stopping-at-object-in-a-scene-in-webgl.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-qna.html b/webgl/lessons/zh_cn/webgl-qna.html
index 5749b4289..64effc348 100644
--- a/webgl/lessons/zh_cn/webgl-qna.html
+++ b/webgl/lessons/zh_cn/webgl-qna.html
@@ -68,6 +68,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-readpixels.html b/webgl/lessons/zh_cn/webgl-readpixels.html
index 9a596033f..73561aa6e 100644
--- a/webgl/lessons/zh_cn/webgl-readpixels.html
+++ b/webgl/lessons/zh_cn/webgl-readpixels.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-references.html b/webgl/lessons/zh_cn/webgl-references.html
index 47f0af198..06983d3b5 100644
--- a/webgl/lessons/zh_cn/webgl-references.html
+++ b/webgl/lessons/zh_cn/webgl-references.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-render-to-texture.html b/webgl/lessons/zh_cn/webgl-render-to-texture.html
index f85599880..0dc4aed1b 100644
--- a/webgl/lessons/zh_cn/webgl-render-to-texture.html
+++ b/webgl/lessons/zh_cn/webgl-render-to-texture.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-resizing-the-canvas.html b/webgl/lessons/zh_cn/webgl-resizing-the-canvas.html
index b9cb5c9c7..2456e3014 100644
--- a/webgl/lessons/zh_cn/webgl-resizing-the-canvas.html
+++ b/webgl/lessons/zh_cn/webgl-resizing-the-canvas.html
@@ -122,6 +122,7 @@
 
 
     <a href="#toc">目录</a>
+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-scene-graph.html b/webgl/lessons/zh_cn/webgl-scene-graph.html
index 4c7a2c1a2..486b4c86a 100644
--- a/webgl/lessons/zh_cn/webgl-scene-graph.html
+++ b/webgl/lessons/zh_cn/webgl-scene-graph.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-setup-and-installation.html b/webgl/lessons/zh_cn/webgl-setup-and-installation.html
index 5fbb8f962..0b0c3c302 100644
--- a/webgl/lessons/zh_cn/webgl-setup-and-installation.html
+++ b/webgl/lessons/zh_cn/webgl-setup-and-installation.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-shaders-and-glsl.html b/webgl/lessons/zh_cn/webgl-shaders-and-glsl.html
index 086ad87c4..071c4f51d 100644
--- a/webgl/lessons/zh_cn/webgl-shaders-and-glsl.html
+++ b/webgl/lessons/zh_cn/webgl-shaders-and-glsl.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-shadertoy.html b/webgl/lessons/zh_cn/webgl-shadertoy.html
index 8279be1e5..bbd74b188 100644
--- a/webgl/lessons/zh_cn/webgl-shadertoy.html
+++ b/webgl/lessons/zh_cn/webgl-shadertoy.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-shadows-continued.html b/webgl/lessons/zh_cn/webgl-shadows-continued.html
index aec51cfae..7ecf4216e 100644
--- a/webgl/lessons/zh_cn/webgl-shadows-continued.html
+++ b/webgl/lessons/zh_cn/webgl-shadows-continued.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-shadows.html b/webgl/lessons/zh_cn/webgl-shadows.html
index 88d6ff038..f330d4174 100644
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+++ b/webgl/lessons/zh_cn/webgl-shadows.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-skinning.html b/webgl/lessons/zh_cn/webgl-skinning.html
index 4deeefce5..0ade2cbdf 100644
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+++ b/webgl/lessons/zh_cn/webgl-skinning.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-skybox.html b/webgl/lessons/zh_cn/webgl-skybox.html
index 4d96bf7e7..1ea30b241 100644
--- a/webgl/lessons/zh_cn/webgl-skybox.html
+++ b/webgl/lessons/zh_cn/webgl-skybox.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-smallest-programs.html b/webgl/lessons/zh_cn/webgl-smallest-programs.html
index 15e21c2ca..e7e7457db 100644
--- a/webgl/lessons/zh_cn/webgl-smallest-programs.html
+++ b/webgl/lessons/zh_cn/webgl-smallest-programs.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-sprites.html b/webgl/lessons/zh_cn/webgl-sprites.html
index 9addc44a6..30e1032bf 100644
--- a/webgl/lessons/zh_cn/webgl-sprites.html
+++ b/webgl/lessons/zh_cn/webgl-sprites.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-state-diagram.html b/webgl/lessons/zh_cn/webgl-state-diagram.html
index 26b5c571b..4a92ecc70 100644
--- a/webgl/lessons/zh_cn/webgl-state-diagram.html
+++ b/webgl/lessons/zh_cn/webgl-state-diagram.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-text-canvas2d.html b/webgl/lessons/zh_cn/webgl-text-canvas2d.html
index 53e701c4d..5539ac647 100644
--- a/webgl/lessons/zh_cn/webgl-text-canvas2d.html
+++ b/webgl/lessons/zh_cn/webgl-text-canvas2d.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-text-glyphs.html b/webgl/lessons/zh_cn/webgl-text-glyphs.html
index 2665df93a..78484b1fa 100644
--- a/webgl/lessons/zh_cn/webgl-text-glyphs.html
+++ b/webgl/lessons/zh_cn/webgl-text-glyphs.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-text-html.html b/webgl/lessons/zh_cn/webgl-text-html.html
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--- a/webgl/lessons/zh_cn/webgl-text-html.html
+++ b/webgl/lessons/zh_cn/webgl-text-html.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-text-texture.html b/webgl/lessons/zh_cn/webgl-text-texture.html
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--- a/webgl/lessons/zh_cn/webgl-text-texture.html
+++ b/webgl/lessons/zh_cn/webgl-text-texture.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-texture-units.html b/webgl/lessons/zh_cn/webgl-texture-units.html
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--- a/webgl/lessons/zh_cn/webgl-texture-units.html
+++ b/webgl/lessons/zh_cn/webgl-texture-units.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-tips.html b/webgl/lessons/zh_cn/webgl-tips.html
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+++ b/webgl/lessons/zh_cn/webgl-tips.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl-visualizing-the-camera.html b/webgl/lessons/zh_cn/webgl-visualizing-the-camera.html
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--- a/webgl/lessons/zh_cn/webgl-visualizing-the-camera.html
+++ b/webgl/lessons/zh_cn/webgl-visualizing-the-camera.html
@@ -68,6 +68,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl1-to-webgl2-fundamentals.html b/webgl/lessons/zh_cn/webgl1-to-webgl2-fundamentals.html
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--- a/webgl/lessons/zh_cn/webgl1-to-webgl2-fundamentals.html
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@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl1-to-webgl2.html b/webgl/lessons/zh_cn/webgl1-to-webgl2.html
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@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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diff --git a/webgl/lessons/zh_cn/webgl2-whats-new.html b/webgl/lessons/zh_cn/webgl2-whats-new.html
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+++ b/webgl/lessons/zh_cn/webgl2-whats-new.html
@@ -122,6 +122,7 @@
 
 
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+    <input type="search" placeholder="?" id="search">
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