🔧 Use generic i/o names

resources/shaders/trex.frag

@@ -68,10 +68,10 @@ void main() {
   float progress = uForOpening ? 1.0 - easeOutQuad(uProgress) : easeOutQuad(uProgress);
 
   // Warp the texture coordinates to create a blow-up effect.
-  vec2 coords = cogl_tex_coord_in[0].st * 2.0 - 1.0;
+  vec2 coords = iTexCoord.st * 2.0 - 1.0;
   float dist  = length(coords);
   coords      = (coords / dist * pow(dist, 1.0 + uWarpIntensity)) * 0.5 + 0.5;
-  coords      = mix(cogl_tex_coord_in[0].st, coords, progress);
+  coords      = mix(iTexCoord.st, coords, progress);
 
   // Scale down the window according to the warp.
   float scale = 0.5 * uWarpIntensity * (1.0 - progress);
@@ -89,12 +89,12 @@ void main() {
 
   // Get the window texture. We shift the texture lookup by the local derivative of
   // the claw texture in order to mimic some folding distortion.
-  vec2 offset    = vec2(dFdx(scratchMap), dFdy(scratchMap)) * progress * 0.5;
-  cogl_color_out = texture2D(uTexture, coords + offset);
+  vec2 offset = vec2(dFdx(scratchMap), dFdy(scratchMap)) * progress * 0.5;
+  oColor      = texture2D(uTexture, coords + offset);
 
   // Shell.GLSLEffect uses straight alpha. So we have to convert from premultiplied.
-  if (cogl_color_out.a > 0) {
-    cogl_color_out.rgb /= cogl_color_out.a;
+  if (oColor.a > 0) {
+    oColor.rgb /= oColor.a;
   }
 
   // Add colorful flashes.
@@ -105,19 +105,19 @@ void main() {
 
   // Hide flashes where there is now window.
   vec4 flash = uFlashColor;
-  flash.a *= flashIntensity * cogl_color_out.a * (1.0 - progress);
+  flash.a *= flashIntensity * oColor.a * (1.0 - progress);
 
   // Hide scratched out parts.
-  cogl_color_out.a *= (scratchMap > progress ? 1 : 0);
+  oColor.a *= (scratchMap > progress ? 1 : 0);
 
   // Add flash color.
-  cogl_color_out = alphaOver(cogl_color_out, flash);
+  oColor = alphaOver(oColor, flash);
 
   // Fade out the remaining shards.
   float fadeProgress = smoothstep(0, 1, (progress - 1.0 + FF_TIME) / FF_TIME);
-  cogl_color_out.a *= sqrt(1 - fadeProgress * fadeProgress);
+  oColor.a *= sqrt(1 - fadeProgress * fadeProgress);
 
   // These are pretty useful for understanding how this works.
-  // cogl_color_out = vec4(vec3(flashIntensity), 1);
-  // cogl_color_out = vec4(vec3(scratchMap), 1);
+  // oColor = vec4(vec3(flashIntensity), 1);
+  // oColor = vec4(vec3(scratchMap), 1);
 }