🔧 Use generic i/o names

resources/shaders/apparition.frag

@@ -30,7 +30,7 @@ void main() {
 
   // Choose a random suction center.
   vec2 center = uSeed * uRandomness + 0.5 * (1.0 - uRandomness);
-  vec2 coords = cogl_tex_coord_in[0].st * ACTOR_SCALE - PADDING - center;
+  vec2 coords = iTexCoord.st * ACTOR_SCALE - PADDING - center;
 
   // Add some shaking.
   coords.x +=
@@ -49,11 +49,11 @@ void main() {
   coords      = vec2(dot(coords, vec2(c, -s)), dot(coords, vec2(s, c)));
 
   // Shell.GLSLEffect uses straight alpha. So we have to convert from premultiplied.
-  cogl_color_out = texture2D(uTexture, coords + center);
-  if (cogl_color_out.a > 0) {
-    cogl_color_out.rgb /= cogl_color_out.a;
+  oColor = texture2D(uTexture, coords + center);
+  if (oColor.a > 0) {
+    oColor.rgb /= oColor.a;
   }
 
   // Fade out the window texture.
-  cogl_color_out.a *= 1.0 - progress;
+  oColor.a *= 1.0 - progress;
 }