source/ambientocclusion.h

   1 #ifndef MSP_GL_AMBIENTOCCLUSION_H_
   2 #define MSP_GL_AMBIENTOCCLUSION_H_
   3
   4 #include "framebuffer.h"
   5 #include "mesh.h"
   6 #include "postprocessor.h"
   7 #include "program.h"
   8 #include "programdata.h"
   9 #include "texture2d.h"
  10 #include "texturing.h"
  11
  12 namespace Msp {
  13 namespace GL {
  14
  15 /**
  16 Implements screen-space ambient occlusion.
  17
  18 http://en.wikipedia.org/wiki/Screen_Space_Ambient_Occlusion
  19 */
  20 class AmbientOcclusion: public PostProcessor
  21 {
  22 private:
  23         Texture2D occlusion;
  24         Texture2D rotate_lookup;
  25         Framebuffer fbo;
  26         Texturing occlude_texturing;
  27         Program occlude_shader;
  28         ProgramData occlude_shdata;
  29         Texturing combine_texturing;
  30         Program combine_shader;
  31         ProgramData combine_shdata;
  32         const Mesh &quad;
  33
  34 public:
  35         AmbientOcclusion(unsigned, unsigned, float);
  36
  37         void set_depth_ratio(float);
  38         void set_darkness(float);
  39
  40         virtual void render(const Texture2D &, const Texture2D &);
  41 };
  42
  43 } // namespace GL
  44 } // namespace Msp
  45
  46 #endif