builtin_data/_ambientocclusion.glsl

   1 const int max_samples = 32;
   2
   3 uniform CameraTransform
   4 {
   5         mat4 eye_world_matrix;
   6         mat4 world_eye_matrix;
   7         mat4 clip_eye_matrix;
   8         mat4 eye_clip_matrix;
   9 };
  10
  11 uniform sampler2D source;
  12 uniform sampler2D depth;
  13 uniform sampler2D occlusion;
  14 uniform sampler2D rotate;
  15 uniform AmbientOcclusionParams
  16 {
  17         float darkness;
  18         vec3 sample_points[max_samples];
  19         int n_samples;
  20         float occlusion_radius;
  21         float edge_depth_threshold;
  22 };
  23
  24 #pragma MSP stage(fragment)
  25 vec3 project(vec3 position)
  26 {
  27         if(position.z>=0.0)
  28                 return vec3(0.0, 0.0, -1.0);
  29         vec4 pp = clip_eye_matrix*vec4(position, 1.0);
  30         return pp.xyz/pp.w;
  31 }
  32
  33 vec3 unproject(vec3 position)
  34 {
  35         vec4 upp = eye_clip_matrix*vec4(position, 1.0);
  36         return upp.xyz/upp.w;
  37 }