subroutines test

shaders/frag1.glsl

@@ -1,16 +1,12 @@
 // SRC A
-// ---------
-// IN: 0 / 1
-// OUT: 3
+// -----------
+// IN: 0 (MFX)
+// IN: 1 (IN A)
+// OUT: 3 (FX A)
 
 in vec2 vUV;
 layout(location = 3) out vec3 fragColor;
 
 void main() {
-    vec2 uv0 = vUV.st;
-    float ratio = iResolution.x / iResolution.y;
-    vec2 uv1 = (uv0 - .5) * vec2(ratio, 1);
-    vec3 color = vec3(vUV, sin(iTime * 0.5) * 0.5 + 0.5);
-    color *= 1 - step(cos(iTime) * 0.1 + 0.4, length(uv1));
-    fragColor = color + texture(frame0, vUV - 0.01).xyz * 0.5;
+    fragColor = src_stage(vUV);
 }