Add native libs lwjgl to support windows, macosx OS; add support for glsl and renamed .txt -> .glsl

Author: code-n-roll

.DS_Store

@@ -56,7 +56,7 @@ class StaticShader : ShaderProgram(VERTEX_FILE, FRAGMENT_FILE) {
 
     companion object {
 
-        private const val VERTEX_FILE = "GameEngine/src/shaders/vertexShader.txt"
-        private const val FRAGMENT_FILE = "GameEngine/src/shaders/fragmentShader.txt"
+        private const val VERTEX_FILE = "GameEngine/src/shaders/vertexShader.glsl"
+        private const val FRAGMENT_FILE = "GameEngine/src/shaders/fragmentShader.glsl"
     }
 }

GameEngine/.DS_Store

@@ -57,7 +57,7 @@ class TerrainShader : ShaderProgram(VERTEX_FILE, FRAGMENT_FILE) {
     }
 
     companion object {
-        private val VERTEX_FILE = "GameEngine/src/shaders/terrainVertexShader.txt"
-        private val FRAGMENT_FILE = "GameEngine/src/shaders/terrainFragmentShader.txt"
+        private val VERTEX_FILE = "GameEngine/src/shaders/terrainVertexShader.glsl"
+        private val FRAGMENT_FILE = "GameEngine/src/shaders/terrainFragmentShader.glsl"
     }
 }