postprocess_double.glsl

   1
   2 @@@ FRAGMENT SHADER
   3
   4 uniform sampler2D render;
   5
   6
   7 uniform float radius;
   8 uniform float var;
   9 uniform float time;
  10
  11 void main() {
  12         vec2 p = gl_TexCoord[0].st;
  13
  14         vec2 diff = 0.02*radius*vec2(sin(time*1.08246),cos(time*1.0356234));
  15         vec2 dist1 = var * (vec2(sin(time*0.32345), cos(time*0.23874)) + 1) / 4 + 0.5;
  16         vec2 p1 = (p - 0.5) * dist1 + 0.5;
  17         vec2 dist2 = var * (vec2(sin(time*0.28362), cos(time*0.33289)) + 1) / 4 + 0.5;
  18         vec2 p2 = (p - 0.5) * dist2 + 0.5;
  19         gl_FragColor = (texture2D(render,p1+diff)+texture2D(render,p2-diff))/2;
  20 }
  21