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

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• Hash : 09e2d93b
  Author :
  Date : 2015-07-14T16:40:31
  

  D3D11: Futher optimize input layout cache.
  
  *re-land with fix for matrix attributes*
  *re-re-land with fix for attributes with BindAttribLocation*
  
  Using the new vertex format type enum, we can shrink the size
  of the input layout tables and reduce draw call overhead
  further.
  
  BUG=angleproject:959
  
  Change-Id: I181acd3d7d519f5587cbe180fb1bca8530b7cfc2
  Reviewed-on: https://chromium-review.googlesource.com/285348
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Tested-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/d3d/d3d11/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 LIBANGLE_RENDERER_D3D_D3D11_INPUTLAYOUTCACHE_H_
  #define LIBANGLE_RENDERER_D3D_D3D11_INPUTLAYOUTCACHE_H_
  
  #include <GLES2/gl2.h>
  
  #include <cstddef>
  #include <map>
  #include <unordered_map>
  
  #include "common/angleutils.h"
  #include "libANGLE/Constants.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/formatutils.h"
  
  namespace gl
  {
  class Program;
  }
  
  namespace rx
  {
  struct TranslatedAttribute;
  struct TranslatedIndexData;
  struct SourceIndexData;
  
  class InputLayoutCache : angle::NonCopyable
  {
    public:
      InputLayoutCache();
      virtual ~InputLayoutCache();
  
      void initialize(ID3D11Device *device, ID3D11DeviceContext *context);
      void clear();
      void markDirty();
  
      gl::Error applyVertexBuffers(const std::vector<TranslatedAttribute> &attributes,
                                   GLenum mode, gl::Program *program, SourceIndexData *sourceInfo);
  
      // Useful for testing
      void setCacheSize(unsigned int cacheSize) { mCacheSize = cacheSize; }
  
    private:
      struct PackedAttributeLayout
      {
          PackedAttributeLayout()
              : numAttributes(0),
                flags(0)
          {
          }
  
          void addAttributeData(GLenum glType,
                                UINT semanticIndex,
                                gl::VertexFormatType vertexFormatType,
                                unsigned int divisor);
  
          bool operator<(const PackedAttributeLayout &other) const;
  
          enum Flags
          {
              FLAG_USES_INSTANCED_SPRITES = 0x1,
              FLAG_MOVE_FIRST_INDEXED = 0x2,
              FLAG_INSTANCED_SPRITES_ACTIVE = 0x4,
          };
  
          size_t numAttributes;
          unsigned int flags;
          uint32_t attributeData[gl::MAX_VERTEX_ATTRIBS];
      };
  
      std::map<PackedAttributeLayout, ID3D11InputLayout *> mLayoutMap;
  
      ID3D11InputLayout *mCurrentIL;
      ID3D11Buffer *mCurrentBuffers[gl::MAX_VERTEX_ATTRIBS];
      UINT mCurrentVertexStrides[gl::MAX_VERTEX_ATTRIBS];
      UINT mCurrentVertexOffsets[gl::MAX_VERTEX_ATTRIBS];
  
      ID3D11Buffer *mPointSpriteVertexBuffer;
      ID3D11Buffer *mPointSpriteIndexBuffer;
  
      unsigned int mCacheSize;
      unsigned long long mCounter;
  
      ID3D11Device *mDevice;
      ID3D11DeviceContext *mDeviceContext;
      D3D_FEATURE_LEVEL mFeatureLevel;
  };
  
  }
  
  #endif // LIBANGLE_RENDERER_D3D_D3D11_INPUTLAYOUTCACHE_H_
  

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