builtin_data/_ambientocclusion.glsl

   1 const int max_samples = 32;
   2
   3 uniform mat4 projection_matrix;
   4
   5 uniform sampler2D source;
   6 uniform sampler2D depth;
   7 uniform sampler2D occlusion;
   8 uniform sampler2D rotate;
   9 uniform AmbientOcclusionParams
  10 {
  11         mat4 inverse_projection;
  12         float darkness;
  13         vec3 sample_points[max_samples];
  14         int n_samples;
  15         float occlusion_radius;
  16         float edge_depth_threshold;
  17 };
  18
  19 #pragma MSP stage(fragment)
  20 vec3 project(vec3 position)
  21 {
  22         if(position.z>=0.0)
  23                 return vec3(0.0, 0.0, -1.0);
  24         vec4 pp = projection_matrix*vec4(position, 1.0);
  25         return pp.xyz/pp.w;
  26 }
  27
  28 vec3 unproject(vec3 position)
  29 {
  30         vec4 upp = inverse_projection*vec4(position, 1.0);
  31         return upp.xyz/upp.w;
  32 }