fix some cleanup bugs

Signed-off-by: Slendi <slendi@socopon.com>

assets/skybox.fs

@@ -1,31 +0,0 @@
-#version 100
-
-precision mediump float;
-
-// Input vertex attributes (from vertex shader)
-varying vec3 fragPosition;
-
-// Input uniform values
-uniform samplerCube environmentMap;
-uniform bool vflipped;
-uniform bool doGamma;
-
-void main()
-{
-    // Fetch color from texture map
-    vec4 texelColor = vec4(0.0);
-
-    if (vflipped) texelColor = textureCube(environmentMap, vec3(fragPosition.x, -fragPosition.y, fragPosition.z));
-    else texelColor = textureCube(environmentMap, fragPosition);
-
-    vec3 color = vec3(texelColor.x, texelColor.y, texelColor.z);
-
-    if (doGamma) // Apply gamma correction
-    {
-        color = color/(color + vec3(1.0));
-        color = pow(color, vec3(1.0/2.2));
-    }
-
-    // Calculate final fragment color
-    gl_FragColor = vec4(color, 1.0);
-}

assets/skybox.vs

@@ -1,24 +0,0 @@
-#version 100
-
-// Input vertex attributes
-attribute vec3 vertexPosition;
-
-// Input uniform values
-uniform mat4 matProjection;
-uniform mat4 matView;
-
-// Output vertex attributes (to fragment shader)
-varying vec3 fragPosition;
-
-void main()
-{
-    // Calculate fragment position based on model transformations
-    fragPosition = vertexPosition;
-
-    // Remove translation from the view matrix
-    mat4 rotView = mat4(mat3(matView));
-    vec4 clipPos = matProjection*rotView*vec4(vertexPosition, 1.0);
-
-    // Calculate final vertex position
-    gl_Position = clipPos;
-}