data/filmgrain.glsl

   1 import postprocess;
   2
   3 uniform sampler2DArray grain;
   4 uniform GrainParams
   5 {
   6         float coarseness;
   7         float strength;
   8 };
   9 uniform int grain_layer;
  10
  11 #pragma MSP stage(fragment)
  12 void main()
  13 {
  14         vec3 gcoord = vec3(gl_FragCoord.xy/textureSize(grain, 0).xy/coarseness, grain_layer);
  15         vec4 incoming = texture(source, texcoord);
  16         frag_color = vec4(incoming.rgb*mix(1.0, texture(grain, gcoord).r, strength), incoming.a);
  17 }