kc3-lang/angle/src/libANGLE/renderer/d3d/d3d11/RenderStateCache.h

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• Hash : 9d737966
  Author :
  Date : 2019-08-14T12:25:12
  

  Standardize copyright notices to project style
  
  For all "ANGLE Project" copyrights, standardize to the format specified
  by the style guide. Changes:
  - "Copyright (c)" and "Copyright(c)" changed to just "Copyright".
  - Removed the second half of date ranges ("Y1Y1-Y2Y2"->"Y1Y1").
  - Fixed a small number of files that had no copyright date using the
    initial commit year from the version control history.
  - Fixed one instance of copyright being "The ANGLE Project" rather than
    "The ANGLE Project Authors"
  
  These changes are applied both to the copyright of source file, and
  where applicable to copyright statements that are generated by
  templates.
  
  BUG=angleproject:3811
  
  Change-Id: I973dd65e4ef9deeba232d5be74c768256a0eb2e5
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/1754397
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/d3d/d3d11/RenderStateCache.h

• //
  // Copyright 2012 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 LIBANGLE_RENDERER_D3D_D3D11_RENDERSTATECACHE_H_
  #define LIBANGLE_RENDERER_D3D_D3D11_RENDERSTATECACHE_H_
  
  #include "common/angleutils.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/SizedMRUCache.h"
  #include "libANGLE/angletypes.h"
  #include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
  
  #include <unordered_map>
  
  namespace std
  {
  template <>
  struct hash<rx::d3d11::BlendStateKey>
  {
      size_t operator()(const rx::d3d11::BlendStateKey &key) const
      {
          return angle::ComputeGenericHash(key);
      }
  };
  
  template <>
  struct hash<rx::d3d11::RasterizerStateKey>
  {
      size_t operator()(const rx::d3d11::RasterizerStateKey &key) const
      {
          return angle::ComputeGenericHash(key);
      }
  };
  
  template <>
  struct hash<gl::DepthStencilState>
  {
      size_t operator()(const gl::DepthStencilState &key) const
      {
          return angle::ComputeGenericHash(key);
      }
  };
  
  template <>
  struct hash<gl::SamplerState>
  {
      size_t operator()(const gl::SamplerState &key) const { return angle::ComputeGenericHash(key); }
  };
  }  // namespace std
  
  namespace rx
  {
  class Framebuffer11;
  class Renderer11;
  
  class RenderStateCache : angle::NonCopyable
  {
    public:
      RenderStateCache();
      virtual ~RenderStateCache();
  
      void clear();
  
      static d3d11::BlendStateKey GetBlendStateKey(const gl::Context *context,
                                                   Framebuffer11 *framebuffer11,
                                                   const gl::BlendState &blendState);
      angle::Result getBlendState(const gl::Context *context,
                                  Renderer11 *renderer,
                                  const d3d11::BlendStateKey &key,
                                  const d3d11::BlendState **outBlendState);
      angle::Result getRasterizerState(const gl::Context *context,
                                       Renderer11 *renderer,
                                       const gl::RasterizerState &rasterState,
                                       bool scissorEnabled,
                                       ID3D11RasterizerState **outRasterizerState);
      angle::Result getDepthStencilState(const gl::Context *context,
                                         Renderer11 *renderer,
                                         const gl::DepthStencilState &dsState,
                                         const d3d11::DepthStencilState **outDSState);
      angle::Result getSamplerState(const gl::Context *context,
                                    Renderer11 *renderer,
                                    const gl::SamplerState &samplerState,
                                    ID3D11SamplerState **outSamplerState);
  
    private:
      // MSDN's documentation of ID3D11Device::CreateBlendState, ID3D11Device::CreateRasterizerState,
      // ID3D11Device::CreateDepthStencilState and ID3D11Device::CreateSamplerState claims the maximum
      // number of unique states of each type an application can create is 4096
      // TODO(ShahmeerEsmail): Revisit the cache sizes to make sure they are appropriate for most
      // scenarios.
      static constexpr unsigned int kMaxStates = 4096;
  
      // The cache tries to clean up this many states at once.
      static constexpr unsigned int kGCLimit = 128;
  
      // Blend state cache
      using BlendStateMap = angle::base::HashingMRUCache<d3d11::BlendStateKey, d3d11::BlendState>;
      BlendStateMap mBlendStateCache;
  
      // Rasterizer state cache
      using RasterizerStateMap =
          angle::base::HashingMRUCache<d3d11::RasterizerStateKey, d3d11::RasterizerState>;
      RasterizerStateMap mRasterizerStateCache;
  
      // Depth stencil state cache
      using DepthStencilStateMap =
          angle::base::HashingMRUCache<gl::DepthStencilState, d3d11::DepthStencilState>;
      DepthStencilStateMap mDepthStencilStateCache;
  
      // Sample state cache
      using SamplerStateMap = angle::base::HashingMRUCache<gl::SamplerState, d3d11::SamplerState>;
      SamplerStateMap mSamplerStateCache;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_D3D_D3D11_RENDERSTATECACHE_H_
  

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