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 "rendertarget.h"
  10 #include "texture2d.h"
  11 #include "texturing.h"
  12
  13 namespace Msp {
  14 namespace GL {
  15
  16 /**
  17 Implements screen-space ambient occlusion.
  18
  19 http://en.wikipedia.org/wiki/Screen_Space_Ambient_Occlusion
  20 */
  21 class AmbientOcclusion: public PostProcessor
  22 {
  23 private:
  24         Texture2D rotate_lookup;
  25         RenderTarget occlude_target;
  26         Texturing texturing;
  27         Program occlude_shader;
  28         Program combine_shader;
  29         mutable ProgramData shdata;
  30         const Mesh &quad;
  31
  32 public:
  33         AmbientOcclusion(unsigned, unsigned, float = 1.0f);
  34
  35 private:
  36         static float random(unsigned &);
  37
  38 public:
  39         void set_n_samples(unsigned);
  40         void set_occlusion_radius(float);
  41
  42         // Deprecated
  43         void set_depth_ratio(float);
  44
  45         void set_darkness(float);
  46
  47         virtual void render(Renderer &, const Texture2D &, const Texture2D &);
  48 };
  49
  50 } // namespace GL
  51 } // namespace Msp
  52
  53 #endif