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

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• Hash : 4dd1e55f
  Author :
  Date : 2015-11-06T14:23:24
  

  D3D11: Implement basic primitive restart.
  
  D3D11 handles primitive restart similarly to OpenGL's fixed index,
  with a couple differences. It can't be toggled off, so we need to
  restrict the max element index (handled in a prior patch), and
  for smaller buffer types we need to rewrite the index data.
  
  BUG=angleproject:597
  
  Change-Id: Ib890ce9b3f5511784138ea3953a384b1c483ca9e
  Reviewed-on: https://chromium-review.googlesource.com/309639
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Tested-by: Jamie Madill <jmadill@chromium.org>
  

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

• //
  // Copyright (c) 2002-2014 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 TranslatedIndexData
  {
      gl::IndexRange indexRange;
      unsigned int startIndex;
      unsigned int startOffset;   // In bytes
  
      IndexBuffer *indexBuffer;
      BufferD3D *storage;
      GLenum indexType;
      unsigned int serial;
  };
  
  struct SourceIndexData
  {
      BufferD3D *srcBuffer;
      const GLvoid *srcIndices;
      unsigned int srcCount;
      GLenum srcIndexType;
      bool srcIndicesChanged;
  };
  
  class IndexDataManager : angle::NonCopyable
  {
    public:
      explicit IndexDataManager(BufferFactoryD3D *factory, RendererClass rendererClass);
      virtual ~IndexDataManager();
  
      gl::Error prepareIndexData(GLenum srcType,
                                 GLsizei count,
                                 gl::Buffer *glBuffer,
                                 const GLvoid *indices,
                                 TranslatedIndexData *translated,
                                 SourceIndexData *sourceData,
                                 bool primitiveRestartFixedIndexEnabled);
  
    private:
      gl::Error streamIndexData(const GLvoid *data,
                                unsigned int count,
                                GLenum srcType,
                                GLenum dstType,
                                bool usePrimitiveRestartFixedIndex,
                                TranslatedIndexData *translated);
      gl::Error getStreamingIndexBuffer(GLenum destinationIndexType,
                                        IndexBufferInterface **outBuffer);
  
      BufferFactoryD3D *const mFactory;
      RendererClass mRendererClass;
      StreamingIndexBufferInterface *mStreamingBufferShort;
      StreamingIndexBufferInterface *mStreamingBufferInt;
  };
  
  }
  
  #endif   // LIBANGLE_INDEXDATAMANAGER_H_
  

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