1 #ifndef MSP_GL_AMBIENTOCCLUSION_H_
2 #define MSP_GL_AMBIENTOCCLUSION_H_
4 #include "framebuffer.h"
6 #include "postprocessor.h"
8 #include "programdata.h"
9 #include "rendertarget.h"
10 #include "texture2d.h"
11 #include "texturing.h"
17 Implements screen-space ambient occlusion.
19 http://en.wikipedia.org/wiki/Screen_Space_Ambient_Occlusion
21 class AmbientOcclusion: public PostProcessor
24 struct Template: PostProcessor::Template
26 class Loader: public DataFile::DerivedObjectLoader<Template, PostProcessor::Template::Loader>
33 float occlusion_radius;
38 virtual AmbientOcclusion *create(unsigned, unsigned) const;
42 Texture2D rotate_lookup;
43 RenderTarget occlude_target;
45 Program occlude_shader;
46 Program combine_shader;
47 mutable ProgramData shdata;
51 AmbientOcclusion(unsigned, unsigned, float = 1.0f);
54 static float random(unsigned &);
57 void set_n_samples(unsigned);
58 void set_occlusion_radius(float);
61 void set_depth_ratio(float);
63 void set_darkness(float);
65 virtual void render(Renderer &, const Texture2D &, const Texture2D &);