From c5e99b5257dd46c90805ca43881b4665a240b986 Mon Sep 17 00:00:00 2001
From: Christoph Helma <helma@in-silico.ch>
Date: Sat, 17 Mar 2018 20:16:40 +0100
Subject: first complete version

---
 shader.frag | 106 ++++++++++++++++++++++++++++++++----------------------------
 1 file changed, 57 insertions(+), 49 deletions(-)

(limited to 'shader.frag')

diff --git a/shader.frag b/shader.frag
index eda981e..60d5e50 100644
--- a/shader.frag
+++ b/shader.frag
@@ -39,6 +39,13 @@ vec2 translate(vec2 st, vec2 amount) {
   return st;
 }
 
+vec2 rotate(vec2 st, float angle) {
+  st -= 0.5;
+  st *= angle;
+  st += 0.5;
+  return st;
+}
+
 mat2 rotate2d(float _angle){
   return mat2(cos(_angle),-sin(_angle), sin(_angle),cos(_angle));
 }
@@ -47,88 +54,89 @@ void main (void) {
   vec4 img; 
   vec2 coord;
   if (program == 0) {
-    coord = zoom(st(),0.5-0.5*(1.0-params[0]));
+    coord = zoom(st(),1.0-0.5*(1.0-params[0]));
     img = texture2D(images[0],coord);
-    img -= params[1]*(1.0-texture2D(images[1],st()));
+    vec2 tc = st();
+    tc = zoom(tc,2.0);
+    tc.y *= 1.5;
+    tc = translate(tc,vec2(-0.35,0.55));
+    vec4 title = texture2D(images[1],tc);
+    img -= params[1]*0.7*title;
   }
   else if (program == 1) {
-    coord = translate(coord,vec2(0.5,0.5));
-    coord = zoom(coord,2.5);
-    coord = translate(coord,vec2(-0.5,-0.5));
-    //coord = zoom(st(),0.5);
-    //coord = zoom(coord,2.1*(1.0-0.5*params[0]));
-    //coord = zoom(st(),0.5-0.5*(1.0-params[0]));
-    //coord = zoom(st(),(1.0-1.5*params[2]));
-    //coord = translate(coord,vec2(0,params[0]));
+    coord = zoom(st(),1.0-0.5*(1.0-params[0]));
     img = texture2D(images[0],coord);
-    coord = zoom(st(),0.5-0.5*(1.0-params[0]));
+    coord = zoom(st(),1.0-0.5*(1.0-params[2]));
+    coord = translate(coord,vec2(-0.1,-0.1));
     vec3 i2 = texture2D(images[2],coord).rgb;
-    //img.rgb = pow((1.0-2.0*i2),img.rgb+0.6);
-    img.rgb = pow(img.rgb,1.0-i2);
+    img.rgb = pow((1.0-2.3*img.rgb),1.0+(1.0-params[1])*2*i2);
   }
   else if (program == 2) {
-    coord = zoom(st(),(1.0-1.5*params[2]));
+    coord = zoom(st(),1.0-0.5*(1.0-params[2]));
+    coord = translate(coord,vec2(-0.1,-0.1));
+    img = texture2D(images[2],coord);
+    coord = zoom(st(),1.0-0.5*(1.0-params[0]));
+    vec3 i2 = texture2D(images[0],coord).rgb;
+    img.rgb = pow((1.0-2.3*img.rgb),1.0+(1.0-params[1])*2*i2);
+  }
+  else if (program == 3) {
+    coord = zoom(st(),1.0-0.5*(1.0-params[0]));
+    coord = rotate(coord,0.1);
     img = texture2D(images[3],coord);
-    coord = zoom(st(),0.5*(1.0-0.5*params[0]));
-    coord = translate(coord,vec2(0.2,0.15));
+    coord = zoom(st(),0.7-0.5*(1.0-params[2]));
+    coord = translate(coord,vec2(-0.1,0.2));
     vec3 i2 = texture2D(images[2],coord).rgb;
-    img.rgb = pow((1.0-2.0*i2),params[3]*5*img.rgb);
+    img.rgb = pow((1.0-2.3*img.rgb),params[3]*5*i2);
     /*
-    coord = zoom(st(),(1.0-1.5*params[0]));
-    img = texture2D(images[3],coord);
-    coord = zoom(st(),0.5*(1.0-0.5*params[2]));
-    coord += 0.5;
-    coord *= rotate2d(params[3]-0.5);
-    coord -= 0.5;
-    vec3 i2 = texture2D(images[2],coord).rgb;
-    img.rgb = pow(img.rgb,5*i2);
-  */
-  }
-  else if (program == 3) {
     coord = st() + 0.5;
     coord -= 0.5;
     img = texture2D(images[3],coord);
     coord = zoom(st(),0.5*(1.0-0.5*params[0]));
-    //coord = translate(coord,vec2(0.2,0.15));
-    //coord = rotate2d(1.0-1.5*params[2])*coord;
     coord = rotate2d(sin(ticks))*coord;
-    vec3 i2 = texture2D(images[2],coord).rgb;
-    img.rgb = pow((1.0-2.0*i2),params[3]*5*img.rgb);
-    /*
-  */
+    vec3 i2 = texture2D(images[0],coord).rgb;
+    img.rgb = 2.0*pow((1.0-2.0*i2),params[3]*50*img.rgb);
+    */
   }
   else if (program == 4) {
     coord = zoom(st(),(1.0-1.5*params[0]));
-    coord = rotate2d(ticks)*coord;
-    coord = translate(coord,vec2(0.5,0.5));
     img = texture2D(images[3],coord);
     coord = zoom(st(),0.5*(1.0-0.5*params[2]));
     coord = translate(coord,vec2(0.2,0.15));
-    coord = rotate2d(1.0-1.5*params[2])*coord;
-    //coord += 0.5;
-    //coord *= rotate2d(params[3]-0.5);
-    //coord -= 0.5;
+    coord = rotate(coord,-0.1);
     vec3 i2 = texture2D(images[2],coord).rgb;
-    img.rgb = pow(img.rgb,i2);
+    img.rgb = pow((1.0-2.3*img.rgb),params[3]*5*i2);
   }
   else if (program == 5) {
     coord = zoom(st(),(1.0-1.5*params[0]));
-    coord = rotate2d(ticks)*coord;
-    coord = translate(coord,vec2(0.5,0.5));
     img = texture2D(images[2],coord);
     coord = zoom(st(),0.5*(1.0-0.5*params[2]));
-    //coord = translate(coord,vec2(0.2,0.15));
-    coord = rotate2d(1.0-1.5*params[2])*coord;
-    //coord += 0.5;
-    //coord *= rotate2d(params[3]-0.5);
-    //coord -= 0.5;
+    coord = translate(coord,vec2(0.2,0.15));
+    vec3 i2 = texture2D(images[3],coord).rgb;
+    img.rgb = pow(img.rgb,5*i2);
+  }
+  else if (program == 6) {
+    coord = zoom(st(),(1.0-1.5*params[0]));
+    img = texture2D(images[2],coord);
+    coord = zoom(st(),0.5*(1.0-0.5*params[2]));
+    coord = translate(coord,vec2(0.2,0.15));
     vec3 i2 = texture2D(images[3],coord).rgb;
     img.rgb = pow(img.rgb,5*i2);
+    vec2 tc = st();
+    tc = zoom(tc,2.0);
+    tc.y *= 1.5;
+    tc = translate(tc,vec2(-0.35,0.15));
+    vec4 title = texture2D(images[1],tc);
+    tc = st();
+    tc = zoom(tc,2.0);
+    tc = translate(tc,vec2(-0.35,0.35));
+    tc.y *= 3.5;
+    vec4 subtitle = texture2D(images[4],tc);
+    img += params[3]*title + subtitle;
   }
   imageStore(backbuffer,ist(),img);
   if (program != 0) {
     vec4 feedback = imageLoad(backbuffer,ist());
-    img = mix(feedback,img,0.5);
+    img = mix(feedback,img,0.4);
   }
   fragColor = img;
   /*
-- 
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