From d3f4d3285d1be8a6445bae43827961c44880033b Mon Sep 17 00:00:00 2001
From: Christoph Helma <helma@in-silico.ch>
Date: Thu, 15 Feb 2018 18:33:39 +0100
Subject: note switching

---
 shader.frag | 38 +++++++++++---------------------------
 1 file changed, 11 insertions(+), 27 deletions(-)

(limited to 'shader.frag')

diff --git a/shader.frag b/shader.frag
index 0141563..4bb6810 100644
--- a/shader.frag
+++ b/shader.frag
@@ -10,7 +10,9 @@ uniform int program;
 uniform sampler2D images[4];
 layout (binding = 0,rgba32f) uniform image2D backbuffer;
 uniform float ratios[4];
-uniform float params[32];
+uniform int idx[2];
+uniform float vel[2];
+uniform float params[4];
 
 out vec4 fragColor;
 
@@ -18,34 +20,16 @@ float random (in float x) {
   return fract(sin(x)*43758.5453123)-0.5;
 }
 
-vec4 img(int i) {
+vec2 coordinates(int i) {
 	vec2 st = gl_FragCoord.xy/resolution.xy;
-  st.x *= ratios[i];
-  st.x += (1-ratios[i])*0.5;
-  st.x += 0.5;
-  return texture2D(images[i],st);
+  return st;
 }
 
 void main (void) {
-    vec4 image = img(0);
-  if (program == 0) {
-    image = img(2);
-    image.rg = image.gr;
-    image = 1.5*image;
-    }
-  /*
-  else {
-    ivec2 P = ivec2(gl_FragCoord.xy);
-    vec4 buf = imageLoad(backbuffer,P);
-    vec4 img1 = mix(img(0),img(1),sin(ticks));
-    vec4 img2 = mix(img(2),img(3),cos(ticks));
-    buf.bg = buf.gr;
-    //buf.b = 0.0;
-    vec4 i = mix(img1,img2,0.5);
-    //P = ivec2(gl_FragCoord.xy);
-    imageStore(backbuffer,P,i);
-    image = mix(i,buf,0.8);
-    }
-    */
-  fragColor = image;
+  vec4 img;
+  vec2 st = coordinates(idx[0]);
+  img = texture2D(images[idx[0]],st);
+  st = coordinates(idx[1]);
+  img = pow(img, texture2D(images[idx[1]],st));
+  fragColor = img;
 }
-- 
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