kc3-lang/angle/src/libGLESv2/renderer/InputLayoutCache.h

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• Hash : cd9458d9
  Author :
  Date : 2012-12-20T21:10:09
  

  Created InputLayoutCache for D3D11 input layouts and vertex buffer application.
  
  TRAC #22235
  
  Author: Geoff Lang
  Signed-off-by: Shannon Woods
  Signed-off-by: Daniel Koch
  
  git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1609 736b8ea6-26fd-11df-bfd4-992fa37f6226
  

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• src/libGLESv2/renderer/InputLayoutCache.h

• //
  // Copyright (c) 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.
  //
  
  // InputLayoutCache.h: Defines InputLayoutCache, a class that builds and caches
  // D3D11 input layouts.
  
  #ifndef LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_
  #define LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_
  
  #include "libGLESv2/Context.h"
  
  #include "libGLESv2/renderer/VertexDataManager.h"
  
  #include <D3D11.h>
  #include <unordered_map>
  
  namespace rx
  {
  
  class InputLayoutCache
  {
    public:
      InputLayoutCache();
      virtual ~InputLayoutCache();
  
      void initialize(ID3D11Device *device, ID3D11DeviceContext *context);
      void clear();
  
      GLenum applyVertexBuffers(TranslatedAttribute attributes[gl::MAX_VERTEX_ATTRIBS],
                                gl::ProgramBinary *programBinary);
  
    private:
      DISALLOW_COPY_AND_ASSIGN(InputLayoutCache);
  
      struct InputLayoutKey
      {
          unsigned int elementCount;
          D3D11_INPUT_ELEMENT_DESC elements[gl::MAX_VERTEX_ATTRIBS];
      };
  
      struct InputLayoutCounterPair
      {
          ID3D11InputLayout *inputLayout;
          unsigned long long lastUsedTime;
      };
  
      static std::size_t hashInputLayout(const InputLayoutKey &inputLayout);
      static bool compareInputLayouts(const InputLayoutKey &a, const InputLayoutKey &b);
  
      typedef std::size_t (*InputLayoutHashFunction)(const InputLayoutKey &);
      typedef bool (*InputLayoutEqualityFunction)(const InputLayoutKey &, const InputLayoutKey &);
      typedef std::unordered_map<InputLayoutKey,
                                 InputLayoutCounterPair,
                                 InputLayoutHashFunction,
                                 InputLayoutEqualityFunction> InputLayoutMap;
      InputLayoutMap mInputLayoutMap;
  
      static const unsigned int kMaxInputLayouts;
  
      unsigned long long mCounter;
  
      ID3D11Device *mDevice;
      ID3D11DeviceContext *mDeviceContext;
  };
  
  }
  
  #endif // LIBGLESV2_RENDERER_INPUTLAYOUTCACHE_H_
  

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