source/core/pipelinestate.cpp

   1 #include <stdexcept>
   2 #include <msp/core/algorithm.h>
   3 #include "pipelinestate.h"
   4
   5 using namespace std;
   6
   7 namespace Msp {
   8 namespace GL {
   9
  10 template<typename T>
  11 void PipelineState::set(T &target, T value, unsigned flag)
  12 {
  13         if(value!=target)
  14         {
  15                 target = value;
  16                 changes |= flag;
  17         }
  18 }
  19
  20 void PipelineState::set_framebuffer(const Framebuffer *f)
  21 {
  22         set(framebuffer, f, FRAMEBUFFER);
  23 }
  24
  25 void PipelineState::set_viewport(const Rect *v)
  26 {
  27         set(viewport, v, VIEWPORT);
  28 }
  29
  30 void PipelineState::set_scissor(const Rect *s)
  31 {
  32         set(scissor, s, SCISSOR);
  33 }
  34
  35 void PipelineState::set_shader_program(const Program *p)
  36 {
  37         set(shprog, p, SHPROG);
  38 }
  39
  40 void PipelineState::set_vertex_setup(const VertexSetup *s)
  41 {
  42         set(vertex_setup, s, VERTEX_SETUP);
  43 }
  44
  45 void PipelineState::set_front_face(FaceWinding w)
  46 {
  47         set(front_face, w, FACE_CULL);
  48 }
  49
  50 void PipelineState::set_face_cull(CullMode c)
  51 {
  52         set(face_cull, c, FACE_CULL);
  53 }
  54
  55 void PipelineState::set_texture(unsigned binding, const Texture *tex, const Sampler *samp)
  56 {
  57         if((tex!=0)!=(samp!=0))
  58                 throw invalid_argument("PipelineState::set_texture");
  59
  60         auto i = lower_bound_member(textures, binding, &BoundTexture::binding);
  61         if(i==textures.end() || i->binding!=binding)
  62                 i = textures.insert(i, BoundTexture(binding));
  63         if(tex!=i->texture || samp!=i->sampler)
  64         {
  65                 i->texture = tex;
  66                 i->sampler = samp;
  67                 i->changed = true;
  68                 changes |= TEXTURES;
  69         }
  70 }
  71
  72 void PipelineState::set_uniform_block(int binding, const UniformBlock *block)
  73 {
  74         auto i = lower_bound_member(uniform_blocks, binding, &BoundUniformBlock::binding);
  75         if(i==uniform_blocks.end() || i->binding!=binding)
  76                 i = uniform_blocks.insert(i, BoundUniformBlock(binding));
  77         if(block!=i->block || binding<0)
  78         {
  79                 i->block = block;
  80                 i->changed = true;
  81                 changes |= UNIFORMS;
  82         }
  83 }
  84
  85 void PipelineState::set_depth_test(const DepthTest *dt)
  86 {
  87         set(depth_test, dt, DEPTH_TEST);
  88 }
  89
  90 void PipelineState::set_stencil_test(const StencilTest *st)
  91 {
  92         set(stencil_test, st, STENCIL_TEST);
  93 }
  94
  95 void PipelineState::set_blend(const Blend *b)
  96 {
  97         set(blend, b, BLEND);
  98 }
  99
 100
 101 PipelineState::BoundTexture::BoundTexture(unsigned b):
 102         binding(b),
 103         changed(false),
 104         texture(0),
 105         sampler(0)
 106 { }
 107
 108
 109 PipelineState::BoundUniformBlock::BoundUniformBlock(int b):
 110         binding(b),
 111         changed(false),
 112         block(0)
 113 { }
 114
 115 } // namespace GL
 116 } // namespace Msp