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//
// Copyright (c) 2012-2013 The ANGLE Project Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.
//
// RenderStateCache.h: Defines rx::RenderStateCache, a cache of Direct3D render
// state objects.
#ifndef LIBGLESV2_RENDERER_RENDERSTATECACHE_H_
#define LIBGLESV2_RENDERER_RENDERSTATECACHE_H_
#include "libGLESv2/angletypes.h"
#include "common/angleutils.h"
namespace gl
{
class Framebuffer;
}
namespace rx
{
class RenderStateCache
{
public:
RenderStateCache();
virtual ~RenderStateCache();
void initialize(ID3D11Device *device);
void clear();
// Increments refcount on the returned blend state, Release() must be called.
ID3D11BlendState *getBlendState(gl::Framebuffer *framebuffer, const gl::BlendState &blendState);
ID3D11RasterizerState *getRasterizerState(const gl::RasterizerState &rasterState,
bool scissorEnabled, unsigned int depthSize);
ID3D11DepthStencilState *getDepthStencilState(const gl::DepthStencilState &dsState);
ID3D11SamplerState *getSamplerState(const gl::SamplerState &samplerState);
private:
DISALLOW_COPY_AND_ASSIGN(RenderStateCache);
unsigned long long mCounter;
// Blend state cache
struct BlendStateKey
{
gl::BlendState blendState;
bool rtChannels[D3D11_SIMULTANEOUS_RENDER_TARGET_COUNT][4];
};
static std::size_t hashBlendState(const BlendStateKey &blendState);
static bool compareBlendStates(const BlendStateKey &a, const BlendStateKey &b);
static const unsigned int kMaxBlendStates;
typedef std::size_t (*BlendStateHashFunction)(const BlendStateKey &);
typedef bool (*BlendStateEqualityFunction)(const BlendStateKey &, const BlendStateKey &);
typedef std::pair<ID3D11BlendState*, unsigned long long> BlendStateCounterPair;
typedef std::unordered_map<BlendStateKey, BlendStateCounterPair, BlendStateHashFunction, BlendStateEqualityFunction> BlendStateMap;
BlendStateMap mBlendStateCache;
// Rasterizer state cache
struct RasterizerStateKey
{
gl::RasterizerState rasterizerState;
bool scissorEnabled;
unsigned int depthSize;
};
static std::size_t hashRasterizerState(const RasterizerStateKey &rasterState);
static bool compareRasterizerStates(const RasterizerStateKey &a, const RasterizerStateKey &b);
static const unsigned int kMaxRasterizerStates;
typedef std::size_t (*RasterizerStateHashFunction)(const RasterizerStateKey &);
typedef bool (*RasterizerStateEqualityFunction)(const RasterizerStateKey &, const RasterizerStateKey &);
typedef std::pair<ID3D11RasterizerState*, unsigned long long> RasterizerStateCounterPair;
typedef std::unordered_map<RasterizerStateKey, RasterizerStateCounterPair, RasterizerStateHashFunction, RasterizerStateEqualityFunction> RasterizerStateMap;
RasterizerStateMap mRasterizerStateCache;
// Depth stencil state cache
static std::size_t hashDepthStencilState(const gl::DepthStencilState &dsState);
static bool compareDepthStencilStates(const gl::DepthStencilState &a, const gl::DepthStencilState &b);
static const unsigned int kMaxDepthStencilStates;
typedef std::size_t (*DepthStencilStateHashFunction)(const gl::DepthStencilState &);
typedef bool (*DepthStencilStateEqualityFunction)(const gl::DepthStencilState &, const gl::DepthStencilState &);
typedef std::pair<ID3D11DepthStencilState*, unsigned long long> DepthStencilStateCounterPair;
typedef std::unordered_map<gl::DepthStencilState,
DepthStencilStateCounterPair,
DepthStencilStateHashFunction,
DepthStencilStateEqualityFunction> DepthStencilStateMap;
DepthStencilStateMap mDepthStencilStateCache;
// Sample state cache
static std::size_t hashSamplerState(const gl::SamplerState &samplerState);
static bool compareSamplerStates(const gl::SamplerState &a, const gl::SamplerState &b);
static const unsigned int kMaxSamplerStates;
typedef std::size_t (*SamplerStateHashFunction)(const gl::SamplerState &);
typedef bool (*SamplerStateEqualityFunction)(const gl::SamplerState &, const gl::SamplerState &);
typedef std::pair<ID3D11SamplerState*, unsigned long long> SamplerStateCounterPair;
typedef std::unordered_map<gl::SamplerState,
SamplerStateCounterPair,
SamplerStateHashFunction,
SamplerStateEqualityFunction> SamplerStateMap;
SamplerStateMap mSamplerStateCache;
ID3D11Device *mDevice;
};
}
#endif // LIBGLESV2_RENDERER_RENDERSTATECACHE_H_
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