1// 2// Copyright (c) 2012-2014 The ANGLE Project Authors. All rights reserved. 3// Use of this source code is governed by a BSD-style license that can be 4// found in the LICENSE file. 5// 6 7// RenderStateCache.h: Defines rx::RenderStateCache, a cache of Direct3D render 8// state objects. 9 10#ifndef LIBGLESV2_RENDERER_RENDERSTATECACHE_H_ 11#define LIBGLESV2_RENDERER_RENDERSTATECACHE_H_ 12 13#include "libGLESv2/angletypes.h" 14#include "libGLESv2/Error.h" 15#include "common/angleutils.h" 16 17#include <unordered_map> 18 19namespace gl 20{ 21class Framebuffer; 22} 23 24namespace rx 25{ 26class Renderer11; 27 28class RenderStateCache 29{ 30 public: 31 RenderStateCache(); 32 virtual ~RenderStateCache(); 33 34 void initialize(ID3D11Device *device); 35 void clear(); 36 37 gl::Error getBlendState(const gl::Framebuffer *framebuffer, const gl::BlendState &blendState, ID3D11BlendState **outBlendState); 38 gl::Error getRasterizerState(const gl::RasterizerState &rasterState, bool scissorEnabled, ID3D11RasterizerState **outRasterizerState); 39 gl::Error getDepthStencilState(const gl::DepthStencilState &dsState, ID3D11DepthStencilState **outDSState); 40 gl::Error getSamplerState(const gl::SamplerState &samplerState, ID3D11SamplerState **outSamplerState); 41 42 private: 43 DISALLOW_COPY_AND_ASSIGN(RenderStateCache); 44 45 unsigned long long mCounter; 46 47 // Blend state cache 48 struct BlendStateKey 49 { 50 gl::BlendState blendState; 51 bool rtChannels[D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT][4]; 52 }; 53 static std::size_t hashBlendState(const BlendStateKey &blendState); 54 static bool compareBlendStates(const BlendStateKey &a, const BlendStateKey &b); 55 static const unsigned int kMaxBlendStates; 56 57 typedef std::size_t (*BlendStateHashFunction)(const BlendStateKey &); 58 typedef bool (*BlendStateEqualityFunction)(const BlendStateKey &, const BlendStateKey &); 59 typedef std::pair<ID3D11BlendState*, unsigned long long> BlendStateCounterPair; 60 typedef std::unordered_map<BlendStateKey, BlendStateCounterPair, BlendStateHashFunction, BlendStateEqualityFunction> BlendStateMap; 61 BlendStateMap mBlendStateCache; 62 63 // Rasterizer state cache 64 struct RasterizerStateKey 65 { 66 gl::RasterizerState rasterizerState; 67 bool scissorEnabled; 68 }; 69 static std::size_t hashRasterizerState(const RasterizerStateKey &rasterState); 70 static bool compareRasterizerStates(const RasterizerStateKey &a, const RasterizerStateKey &b); 71 static const unsigned int kMaxRasterizerStates; 72 73 typedef std::size_t (*RasterizerStateHashFunction)(const RasterizerStateKey &); 74 typedef bool (*RasterizerStateEqualityFunction)(const RasterizerStateKey &, const RasterizerStateKey &); 75 typedef std::pair<ID3D11RasterizerState*, unsigned long long> RasterizerStateCounterPair; 76 typedef std::unordered_map<RasterizerStateKey, RasterizerStateCounterPair, RasterizerStateHashFunction, RasterizerStateEqualityFunction> RasterizerStateMap; 77 RasterizerStateMap mRasterizerStateCache; 78 79 // Depth stencil state cache 80 static std::size_t hashDepthStencilState(const gl::DepthStencilState &dsState); 81 static bool compareDepthStencilStates(const gl::DepthStencilState &a, const gl::DepthStencilState &b); 82 static const unsigned int kMaxDepthStencilStates; 83 84 typedef std::size_t (*DepthStencilStateHashFunction)(const gl::DepthStencilState &); 85 typedef bool (*DepthStencilStateEqualityFunction)(const gl::DepthStencilState &, const gl::DepthStencilState &); 86 typedef std::pair<ID3D11DepthStencilState*, unsigned long long> DepthStencilStateCounterPair; 87 typedef std::unordered_map<gl::DepthStencilState, 88 DepthStencilStateCounterPair, 89 DepthStencilStateHashFunction, 90 DepthStencilStateEqualityFunction> DepthStencilStateMap; 91 DepthStencilStateMap mDepthStencilStateCache; 92 93 // Sample state cache 94 static std::size_t hashSamplerState(const gl::SamplerState &samplerState); 95 static bool compareSamplerStates(const gl::SamplerState &a, const gl::SamplerState &b); 96 static const unsigned int kMaxSamplerStates; 97 98 typedef std::size_t (*SamplerStateHashFunction)(const gl::SamplerState &); 99 typedef bool (*SamplerStateEqualityFunction)(const gl::SamplerState &, const gl::SamplerState &); 100 typedef std::pair<ID3D11SamplerState*, unsigned long long> SamplerStateCounterPair; 101 typedef std::unordered_map<gl::SamplerState, 102 SamplerStateCounterPair, 103 SamplerStateHashFunction, 104 SamplerStateEqualityFunction> SamplerStateMap; 105 SamplerStateMap mSamplerStateCache; 106 107 ID3D11Device *mDevice; 108}; 109 110} 111 112#endif // LIBGLESV2_RENDERER_RENDERSTATECACHE_H_