subroutines test

shaders/frag3.glsl

@@ -1,11 +1,12 @@
 // FX A
-// ---------
-// IN: 3 / 5
-// OUT: 5
+// -------------
+// IN: 3 (SRC A)
+// IN: 5 (FX A)
+// OUT: 5 (A+B)
 
 in vec2 vUV;
 layout(location = 5) out vec3 fragColor;
 
 void main() {
-    fragColor = gauss2(frame3, vUV, 0.001); //texture(frame3, vUV).xyz;
+    fragColor = fx_stage(vUV, frame3, frame5);
 }