kc3-lang/angle/src/libANGLE/renderer/d3d/VertexDataManager.h

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• Hash : 476682e6
  Author :
  Date : 2015-06-30T10:04:29
  

  Use std::vector for TranslatedAttribs.
  
  This allows us to cache a std::vector between calls, and avoids us
  calling allocation/constructors for locals, which saves us some
  time. It also allows us to use the vector's size to limit the range
  of attribs we look at.
  
  BUG=angleproject:959
  
  Change-Id: I799ed6c92fa8fca96e92e235b125a11d2d551aab
  Reviewed-on: https://chromium-review.googlesource.com/277286
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Tested-by: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/d3d/VertexDataManager.h

• //
  // Copyright (c) 2002-2012 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.
  //
  
  // VertexDataManager.h: Defines the VertexDataManager, a class that
  // runs the Buffer translation process.
  
  #ifndef LIBANGLE_RENDERER_D3D_VERTEXDATAMANAGER_H_
  #define LIBANGLE_RENDERER_D3D_VERTEXDATAMANAGER_H_
  
  #include "libANGLE/Constants.h"
  #include "libANGLE/VertexAttribute.h"
  #include "common/angleutils.h"
  
  namespace gl
  {
  class State;
  struct VertexAttribute;
  struct VertexAttribCurrentValueData;
  }
  
  namespace rx
  {
  class BufferD3D;
  class BufferFactoryD3D;
  class StreamingVertexBufferInterface;
  class VertexBuffer;
  
  struct TranslatedAttribute
  {
      TranslatedAttribute()
          : active(false),
            attribute(NULL),
            currentValueType(GL_NONE),
            offset(0),
            stride(0),
            vertexBuffer(NULL),
            storage(NULL),
            serial(0),
            divisor(0)
      {}
  
      bool active;
  
      const gl::VertexAttribute *attribute;
      GLenum currentValueType;
      unsigned int offset;
      unsigned int stride;   // 0 means not to advance the read pointer at all
  
      VertexBuffer *vertexBuffer;
      BufferD3D *storage;
      unsigned int serial;
      unsigned int divisor;
  };
  
  class VertexDataManager : angle::NonCopyable
  {
    public:
      VertexDataManager(BufferFactoryD3D *factory);
      virtual ~VertexDataManager();
  
      gl::Error prepareVertexData(const gl::State &state,
                                  GLint start,
                                  GLsizei count,
                                  std::vector<TranslatedAttribute> *translatedAttribs,
                                  GLsizei instances);
  
    private:
      struct CurrentValueState
      {
          CurrentValueState();
          ~CurrentValueState();
  
          StreamingVertexBufferInterface *buffer;
          gl::VertexAttribCurrentValueData data;
          size_t offset;
      };
  
      gl::Error reserveSpaceForAttrib(const TranslatedAttribute &translatedAttrib,
                                      GLsizei count,
                                      GLsizei instances) const;
  
      void invalidateMatchingStaticData(const gl::VertexAttribute &attrib,
                                        const gl::VertexAttribCurrentValueData &currentValue) const;
  
      gl::Error storeAttribute(TranslatedAttribute *translated,
                               GLint start,
                               GLsizei count,
                               GLsizei instances);
  
      gl::Error storeCurrentValue(const gl::VertexAttribCurrentValueData &currentValue,
                                  TranslatedAttribute *translated,
                                  CurrentValueState *cachedState);
  
      void hintUnmapAllResources(const std::vector<gl::VertexAttribute> &vertexAttributes);
  
      BufferFactoryD3D *const mFactory;
  
      StreamingVertexBufferInterface *mStreamingBuffer;
      std::vector<CurrentValueState> mCurrentValueCache;
  
      // Cache variables
      std::vector<TranslatedAttribute *> mActiveEnabledAttributes;
      std::vector<size_t> mActiveDisabledAttributes;
  };
  
  }
  
  #endif   // LIBANGLE_RENDERER_D3D_VERTEXDATAMANAGER_H_
  

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