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a guest Apr 10th, 2019 59 Never
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  1. #version 330
  2.  
  3. in vec2 texCoord0;
  4.  
  5. uniform sampler2D texture0;
  6. uniform vec2 resolution = vec2(800, 600); // static to reduce uniform calls
  7. uniform bool horizontal;
  8. uniform int samples;
  9.  
  10. out vec4 outColor;
  11.  
  12.  
  13. void main(void)
  14. {
  15.     vec3 colorSum = vec3(0, 0, 0);
  16.     int iterations = 0;
  17.  
  18.     if (horizontal)
  19.     {
  20.         for (int i = -samples; i <= samples; i++)
  21.         {
  22.             colorSum += texture(texture0, texCoord0 + vec2(i, 0.0) / resolution).rgb;
  23.             iterations++;
  24.         }
  25.     }
  26.     else
  27.     {
  28.         for (int i = -samples; i <= samples; i++)
  29.         {
  30.             colorSum += texture(texture0, texCoord0 + vec2(0.0, i) / resolution).rgb;
  31.             iterations++;
  32.         }
  33.     }
  34.     outColor = vec4(colorSum / iterations, 1);
  35. }
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