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 # lab02-debugging
 
+https://www.shadertoy.com/view/tfsBDf
+
+Syntax error: vec doesn't exist, should be vec2
+
+Camera error: The line H *= len * iResolution.x / iResolution.x incorrectly calculates horizontal camera vector, causing image to stretch along x
+
+Raycast bug: UV used to create camera rays is uv (0 to 1) instead of uv2 (-1 to 1), UV should be from -1 to 1, 0 to 1 only calculates rays in one camera quadrant
+
+Raymarch for loop: requires more iterations to hit the floor behind the spheres, since raymarch steps are smaller when the ray is closer to sphere
+
+Reflect error: dir = reflect(eye, nor) wrongly reflects the eye position instead of the ray direction when calculating reflection
+
+
 # Setup 
 
 Create a [Shadertoy account](https://www.shadertoy.com/). Either fork this shadertoy, or create a new shadertoy and copy the code from the [Debugging Puzzle](https://www.shadertoy.com/view/flGfRc).