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

• //
  // Copyright 2002 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.
  //
  
  // IndexDataManager.h: Defines the IndexDataManager, a class that
  // runs the Buffer translation process for index buffers.
  
  #ifndef LIBANGLE_INDEXDATAMANAGER_H_
  #define LIBANGLE_INDEXDATAMANAGER_H_
  
  #include <GLES2/gl2.h>
  
  #include "common/angleutils.h"
  #include "common/mathutil.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/renderer/d3d/RendererD3D.h"
  
  namespace
  {
  enum
  {
      INITIAL_INDEX_BUFFER_SIZE = 4096 * sizeof(GLuint)
  };
  }
  
  namespace gl
  {
  class Buffer;
  }
  
  namespace rx
  {
  class IndexBufferInterface;
  class StaticIndexBufferInterface;
  class StreamingIndexBufferInterface;
  class IndexBuffer;
  class BufferD3D;
  class RendererD3D;
  
  struct SourceIndexData
  {
      BufferD3D *srcBuffer;
      const void *srcIndices;
      unsigned int srcCount;
      gl::DrawElementsType srcIndexType;
      bool srcIndicesChanged;
  };
  
  struct TranslatedIndexData
  {
      unsigned int startIndex;
      unsigned int startOffset;  // In bytes
  
      IndexBuffer *indexBuffer;
      BufferD3D *storage;
      gl::DrawElementsType indexType;
      unsigned int serial;
  
      SourceIndexData srcIndexData;
  };
  
  class IndexDataManager : angle::NonCopyable
  {
    public:
      explicit IndexDataManager(BufferFactoryD3D *factory);
      virtual ~IndexDataManager();
  
      void deinitialize();
  
      angle::Result prepareIndexData(const gl::Context *context,
                                     gl::DrawElementsType srcType,
                                     gl::DrawElementsType dstType,
                                     GLsizei count,
                                     gl::Buffer *glBuffer,
                                     const void *indices,
                                     TranslatedIndexData *translated);
  
    private:
      angle::Result streamIndexData(const gl::Context *context,
                                    const void *data,
                                    unsigned int count,
                                    gl::DrawElementsType srcType,
                                    gl::DrawElementsType dstType,
                                    bool usePrimitiveRestartFixedIndex,
                                    TranslatedIndexData *translated);
      angle::Result getStreamingIndexBuffer(const gl::Context *context,
                                            gl::DrawElementsType destinationIndexType,
                                            IndexBufferInterface **outBuffer);
  
      using StreamingBuffer = std::unique_ptr<StreamingIndexBufferInterface>;
  
      BufferFactoryD3D *const mFactory;
      std::unique_ptr<StreamingIndexBufferInterface> mStreamingBufferShort;
      std::unique_ptr<StreamingIndexBufferInterface> mStreamingBufferInt;
  };
  
  angle::Result GetIndexTranslationDestType(const gl::Context *context,
                                            GLsizei indexCount,
                                            gl::DrawElementsType indexType,
                                            const void *indices,
                                            bool usePrimitiveRestartWorkaround,
                                            gl::DrawElementsType *destTypeOut);
  
  ANGLE_INLINE bool IsOffsetAligned(gl::DrawElementsType elementType, unsigned int offset)
  {
      return (offset % gl::GetDrawElementsTypeSize(elementType) == 0);
  }
  }  // namespace rx
  
  #endif  // LIBANGLE_INDEXDATAMANAGER_H_
  

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