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

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• Hash : dd5f27ee
  Author :
  Date : 2017-06-07T10:17:09
  

  Make VertexBinding's member variables private
  
  The patch decorates all members in VertexBinding as private and limits
  access to them only through getters and setters. This makes it easier to
  debug and keep track of any assignments to the class members.
  
  BUG=angleproject:2062
  TEST=angle_end2end_tests
  
  Change-Id: Iddd49063d060f136bc9cf11c313a5af0931d433c
  Reviewed-on: https://chromium-review.googlesource.com/530786
  Commit-Queue: Olli Etuaho <oetuaho@nvidia.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@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 "common/angleutils.h"
  #include "libANGLE/angletypes.h"
  #include "libANGLE/Constants.h"
  #include "libANGLE/VertexAttribute.h"
  
  namespace gl
  {
  class State;
  struct VertexAttribute;
  class VertexBinding;
  struct VertexAttribCurrentValueData;
  }
  
  namespace rx
  {
  class BufferD3D;
  class BufferFactoryD3D;
  class StreamingVertexBufferInterface;
  class VertexBuffer;
  
  class VertexBufferBinding final
  {
    public:
      VertexBufferBinding();
      VertexBufferBinding(const VertexBufferBinding &other);
      ~VertexBufferBinding();
  
      void set(VertexBuffer *vertexBuffer);
      VertexBuffer *get() const;
      VertexBufferBinding &operator=(const VertexBufferBinding &other);
  
    private:
      VertexBuffer *mBoundVertexBuffer;
  };
  
  struct TranslatedAttribute
  {
      TranslatedAttribute();
  
      // Computes the correct offset from baseOffset, usesFirstVertexOffset, stride and startVertex.
      // Can throw an error on integer overflow.
      gl::ErrorOrResult<unsigned int> computeOffset(GLint startVertex) const;
  
      bool active;
  
      const gl::VertexAttribute *attribute;
      const gl::VertexBinding *binding;
      GLenum currentValueType;
      unsigned int baseOffset;
      bool usesFirstVertexOffset;
      unsigned int stride;   // 0 means not to advance the read pointer at all
  
      VertexBufferBinding vertexBuffer;
      BufferD3D *storage;
      unsigned int serial;
      unsigned int divisor;
  };
  
  enum class VertexStorageType
  {
      UNKNOWN,
      STATIC,         // Translate the vertex data once and re-use it.
      DYNAMIC,        // Translate the data every frame into a ring buffer.
      DIRECT,         // Bind a D3D buffer directly without any translation.
      CURRENT_VALUE,  // Use a single value for the attribute.
  };
  
  // Given a vertex attribute, return the type of storage it will use.
  VertexStorageType ClassifyAttributeStorage(const gl::VertexAttribute &attrib,
                                             const gl::VertexBinding &binding);
  
  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);
  
      static void StoreDirectAttrib(TranslatedAttribute *directAttrib);
  
      static gl::Error StoreStaticAttrib(TranslatedAttribute *translated);
  
      gl::Error storeDynamicAttribs(std::vector<TranslatedAttribute> *translatedAttribs,
                                    const gl::AttributesMask &dynamicAttribsMask,
                                    GLint start,
                                    GLsizei count,
                                    GLsizei instances);
  
      // Promote static usage of dynamic buffers.
      static void PromoteDynamicAttribs(const std::vector<TranslatedAttribute> &translatedAttribs,
                                        const gl::AttributesMask &dynamicAttribsMask,
                                        GLsizei count);
  
      gl::Error storeCurrentValue(const gl::VertexAttribCurrentValueData &currentValue,
                                  TranslatedAttribute *translated,
                                  size_t attribIndex);
  
    private:
      struct CurrentValueState
      {
          CurrentValueState();
          ~CurrentValueState();
  
          StreamingVertexBufferInterface *buffer;
          gl::VertexAttribCurrentValueData data;
          size_t offset;
      };
  
      gl::Error reserveSpaceForAttrib(const TranslatedAttribute &translatedAttrib,
                                      GLsizei count,
                                      GLsizei instances) const;
  
      gl::Error storeDynamicAttrib(TranslatedAttribute *translated,
                                   GLint start,
                                   GLsizei count,
                                   GLsizei instances);
  
      BufferFactoryD3D *const mFactory;
  
      StreamingVertexBufferInterface *mStreamingBuffer;
      std::vector<CurrentValueState> mCurrentValueCache;
      gl::AttributesMask mDynamicAttribsMaskCache;
  };
  
  }  // namespace rx
  
  #endif   // LIBANGLE_RENDERER_D3D_VERTEXDATAMANAGER_H_
  

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