working 6-stage fragments

shaders/frag1.glsl

@@ -2,9 +2,18 @@
 
 uniform float iTime;
 uniform vec2 iResolution;
-in vec2 vUV;
-layout(location = 0) out vec3 fragColor;
+
 uniform sampler2D frame0;
+uniform sampler2D frame1;
+
+in vec2 vUV;
+layout(location = 3) out vec3 fragColor;
+
+
+// SRC A
+// ---------
+// IN: 0 / 1
+// OUT: 3
 
 void main() {
     vec2 uv0 = vUV.st;

shaders/frag2.glsl

@@ -0,0 +1,19 @@
+#version 460
+
+uniform float iTime;
+uniform vec2 iResolution;
+
+uniform sampler2D frame0;
+uniform sampler2D frame2;
+
+in vec2 vUV;
+layout(location = 4) out vec3 fragColor;
+
+// SRC B
+// ---------
+// IN: 0 / 2
+// OUT: 4
+
+void main() {
+    fragColor = vec3(vUV, 0.0) * step(0.3, vUV.x) * step(-0.4, -vUV.x);
+}

shaders/frag3.glsl

@@ -0,0 +1,19 @@
+#version 460
+
+uniform float iTime;
+uniform vec2 iResolution;
+
+uniform sampler2D frame3;
+uniform sampler2D frame5;
+
+in vec2 vUV;
+layout(location = 5) out vec3 fragColor;
+
+// FX A
+// ---------
+// IN: 3 / 5
+// OUT: 5
+
+void main() {
+    fragColor = texture(frame3, vUV).xyz;
+}

shaders/frag4.glsl

@@ -0,0 +1,19 @@
+#version 460
+
+uniform float iTime;
+uniform vec2 iResolution;
+
+uniform sampler2D frame4;
+uniform sampler2D frame6;
+
+in vec2 vUV;
+layout(location = 6) out vec3 fragColor;
+
+// FX B
+// ---------
+// IN: 4 / 6
+// OUT: 6
+
+void main() {
+    fragColor = texture(frame4, vUV).xyz;
+}

shaders/frag5.glsl

@@ -0,0 +1,19 @@
+#version 460
+
+uniform float iTime;
+uniform vec2 iResolution;
+
+uniform sampler2D frame5;
+uniform sampler2D frame6;
+
+in vec2 vUV;
+layout(location = 7) out vec3 fragColor;
+
+// A+B
+// ---------
+// IN: 5 / 6
+// OUT: 7
+
+void main() {
+    fragColor = texture(frame5, vUV).xyz + texture(frame6, vUV).xyz;
+}

shaders/frag6.glsl

@@ -0,0 +1,19 @@
+#version 460
+
+uniform float iTime;
+uniform vec2 iResolution;
+
+uniform sampler2D frame7;
+uniform sampler2D frame0;
+
+in vec2 vUV;
+layout(location = 0) out vec3 fragColor;
+
+// MFX
+// ---------
+// IN: 7 / 0
+// OUT: 0
+
+void main() {
+    fragColor = texture(frame7, vUV).xyz;
+}