source/core/pipelinestate.h

   1 #ifndef MSP_GL_PIPELINESTATE_H_
   2 #define MSP_GL_PIPELINESTATE_H_
   3
   4 #include <vector>
   5 #include <msp/core/noncopyable.h>
   6 #include "cullface.h"
   7 #include "pipelinestate_backend.h"
   8
   9 namespace Msp {
  10 namespace GL {
  11
  12 class Blend;
  13 class DepthTest;
  14 class Framebuffer;
  15 class Program;
  16 class Rect;
  17 class Sampler;
  18 class StencilTest;
  19 class Texture;
  20 class UniformBlock;
  21 class VertexSetup;
  22
  23 class PipelineState: public PipelineStateBackend
  24 {
  25         friend PipelineStateBackend;
  26
  27 private:
  28         struct BoundTexture
  29         {
  30                 unsigned binding;
  31                 mutable bool changed;
  32                 const Texture *texture;
  33                 const Sampler *sampler;
  34
  35                 BoundTexture(unsigned);
  36         };
  37
  38         struct BoundUniformBlock
  39         {
  40                 int binding;
  41                 mutable bool changed;
  42                 const UniformBlock *block;
  43
  44                 BoundUniformBlock(int);
  45         };
  46
  47         enum ChangeMask
  48         {
  49                 SHPROG = 1,
  50                 VERTEX_SETUP = 2,
  51                 FACE_CULL = 4,
  52                 CLIP_PLANES = 8,
  53                 TEXTURES = 16,
  54                 UNIFORMS = 32,
  55                 DEPTH_TEST = 64,
  56                 STENCIL_TEST = 128,
  57                 BLEND = 256,
  58                 FRAMEBUFFER = 512,
  59                 VIEWPORT = 1024,
  60                 SCISSOR = 2048
  61         };
  62
  63         const Framebuffer *framebuffer;
  64         const Rect *viewport;
  65         const Rect *scissor;
  66         const Program *shprog;
  67         const VertexSetup *vertex_setup;
  68         FaceWinding front_face;
  69         CullMode face_cull;
  70         unsigned enabled_clip_planes;
  71         std::vector<BoundTexture> textures;
  72         std::vector<BoundUniformBlock> uniform_blocks;
  73         const DepthTest *depth_test;
  74         const StencilTest *stencil_test;
  75         const Blend *blend;
  76         mutable unsigned changes;
  77
  78 public:
  79         PipelineState();
  80
  81 private:
  82         template<typename T>
  83         void set(T &, T, unsigned);
  84 public:
  85         void set_framebuffer(const Framebuffer *);
  86         void set_viewport(const Rect *);
  87         void set_scissor(const Rect *);
  88         void set_shader_program(const Program *);
  89         void set_vertex_setup(const VertexSetup *);
  90         void set_front_face(FaceWinding);
  91         void set_face_cull(CullMode);
  92         void set_enabled_clip_planes(unsigned);
  93         void set_texture(unsigned, const Texture *, const Sampler *);
  94         void set_uniform_block(int, const UniformBlock *);
  95         void set_depth_test(const DepthTest *);
  96         void set_stencil_test(const StencilTest *);
  97         void set_blend(const Blend *);
  98
  99         const Framebuffer *get_framebuffer() const { return framebuffer; }
 100         const Program *get_shader_program() const { return shprog; }
 101         const VertexSetup *get_vertex_setup() const { return vertex_setup; }
 102         FaceWinding get_front_face() const { return front_face; }
 103         CullMode get_face_cull() const { return face_cull; }
 104 };
 105
 106 } // namespace GL
 107 } // namespace Msp
 108
 109 #endif