commenting frag shader

game/assets/shaders/pixelart.fs

@@ -1,36 +1,34 @@
 #version 330
 
-// Input vertex attributes (from vertex shader)
+// Fragment texture UV coordinate
 in vec2 fragTexCoord;
-in vec4 fragColor;
 
-// Input uniform values
+// Whole input texture
 uniform sampler2D texture0;
-uniform vec4 colDiffuse;
+
+// Viewport size
 uniform vec2 viewport;
 
 // Output fragment color
 out vec4 finalColor;
 
-// Pixel scaling
+// Pixel scaling factor (pixels per pixel)
 const vec2 pixelScale = vec2(1.0, 1.0);
 
-void main()
+void main() {
-{
+  // Calculate the distance to merge pixels
+  float dx = pixelScale.x * (1.0 / viewport.x);
+  float dy = pixelScale.y * (1.0 / viewport.y);
 
-    // Calculate the distance to merge pixels
+  // Get the base UV coordinate of the pixel
-    float dx = pixelScale.x * (1.0 / viewport.x);
+  vec2 baseUV = fragTexCoord;
-    float dy = pixelScale.y * (1.0 / viewport.y);
 
-    // Get the base UV coordinate of the pixel
+  // Calculate a UV for this new blocky pixel
-    vec2 baseUV = fragTexCoord;
+  vec2 pixelatedUV = vec2(dx * floor(baseUV.x / dx), dy * floor(baseUV.y / dy));
 
-    // Calculate a UV for this new blocky pixel
+  // Rebuild the texture with the new UVs
-    vec2 pixelatedUV = vec2(dx * floor(baseUV.x / dx), dy * floor(baseUV.y / dy));
+  vec3 tc = texture(texture0, pixelatedUV).rgb;
 
-    // Rebuild the texture with the new UVs
+  // Build the final pixel
-    vec3 tc = texture(texture0, pixelatedUV).rgb;
+  finalColor = vec4(tc, 1.0);
-
-    // Build the final pixel
-    finalColor = vec4(tc, 1.0);
 }