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 PipelineState::PipelineState():
  11         framebuffer(0),
  12         viewport(0),
  13         scissor(0),
  14         shprog(0),
  15         vertex_setup(0),
  16         front_face(COUNTERCLOCKWISE),
  17         face_cull(NO_CULL),
  18         enabled_clip_planes(0),
  19         depth_test(0),
  20         stencil_test(0),
  21         blend(0),
  22         changes(0)
  23 { }
  24
  25 template<typename T>
  26 void PipelineState::set(T &target, T value, unsigned flag)
  27 {
  28         if(value!=target)
  29         {
  30                 target = value;
  31                 changes |= flag;
  32         }
  33 }
  34
  35 void PipelineState::set_framebuffer(const Framebuffer *f)
  36 {
  37         set(framebuffer, f, FRAMEBUFFER);
  38 }
  39
  40 void PipelineState::set_viewport(const Rect *v)
  41 {
  42         set(viewport, v, VIEWPORT);
  43 }
  44
  45 void PipelineState::set_scissor(const Rect *s)
  46 {
  47         set(scissor, s, SCISSOR);
  48 }
  49
  50 void PipelineState::set_shader_program(const Program *p)
  51 {
  52         set(shprog, p, SHPROG);
  53 }
  54
  55 void PipelineState::set_vertex_setup(const VertexSetup *s)
  56 {
  57         set(vertex_setup, s, VERTEX_SETUP);
  58 }
  59
  60 void PipelineState::set_front_face(FaceWinding w)
  61 {
  62         set(front_face, w, FACE_CULL);
  63 }
  64
  65 void PipelineState::set_face_cull(CullMode c)
  66 {
  67         set(face_cull, c, FACE_CULL);
  68 }
  69
  70 void PipelineState::set_enabled_clip_planes(unsigned p)
  71 {
  72         set(enabled_clip_planes, p, CLIP_PLANES);
  73 }
  74
  75 void PipelineState::set_texture(unsigned binding, const Texture *tex, const Sampler *samp)
  76 {
  77         if((tex!=0)!=(samp!=0))
  78                 throw invalid_argument("PipelineState::set_texture");
  79
  80         auto i = lower_bound_member(textures, binding, &BoundTexture::binding);
  81         if(i==textures.end() || i->binding!=binding)
  82                 i = textures.insert(i, BoundTexture(binding));
  83         if(tex!=i->texture || samp!=i->sampler)
  84         {
  85                 i->texture = tex;
  86                 i->sampler = samp;
  87                 i->changed = true;
  88                 changes |= TEXTURES;
  89         }
  90 }
  91
  92 void PipelineState::set_uniform_block(int binding, const UniformBlock *block)
  93 {
  94         auto i = lower_bound_member(uniform_blocks, binding, &BoundUniformBlock::binding);
  95         if(i==uniform_blocks.end() || i->binding!=binding)
  96                 i = uniform_blocks.insert(i, BoundUniformBlock(binding));
  97         if(block!=i->block || binding<0)
  98         {
  99                 i->block = block;
 100                 i->changed = true;
 101                 changes |= UNIFORMS;
 102         }
 103 }
 104
 105 void PipelineState::set_depth_test(const DepthTest *dt)
 106 {
 107         set(depth_test, dt, DEPTH_TEST);
 108 }
 109
 110 void PipelineState::set_stencil_test(const StencilTest *st)
 111 {
 112         set(stencil_test, st, STENCIL_TEST);
 113 }
 114
 115 void PipelineState::set_blend(const Blend *b)
 116 {
 117         set(blend, b, BLEND);
 118 }
 119
 120
 121 PipelineState::BoundTexture::BoundTexture(unsigned b):
 122         binding(b),
 123         changed(false),
 124         texture(0),
 125         sampler(0)
 126 { }
 127
 128
 129 PipelineState::BoundUniformBlock::BoundUniformBlock(int b):
 130         binding(b),
 131         changed(false),
 132         block(0)
 133 { }
 134
 135 } // namespace GL
 136 } // namespace Msp