kc3-lang/angle/src/libANGLE/renderer/d3d/d3d9/Buffer9.h

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• Hash : 520c4ae2
  Author :
  Date : 2015-05-05T13:12:36
  

  Add a Buffer::getIndexRange function.
  
  Instead of exposing the index range cache, add a more generic method that
  allows the buffers to handle their own caching of index ranges.
  BufferImpl::getData can be hard to implement for BufferGL because there
  isn't a way to tell the buffer to unmap and glGetBufferSubData can be very
  expensive, requiring an extra copy of the data.
  
  BUG=angleproject:881
  
  Change-Id: Idec645219056132e0d72a410fbe7b971fa02c9e9
  Reviewed-on: https://chromium-review.googlesource.com/261892
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Olli Etuaho <oetuaho@nvidia.com>
  Tested-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/d3d/d3d9/Buffer9.h

• //
  // Copyright 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.
  //
  
  // Buffer9.h: Defines the rx::Buffer9 class which implements rx::BufferImpl via rx::BufferD3D.
  
  #ifndef LIBANGLE_RENDERER_D3D_D3D9_BUFFER9_H_
  #define LIBANGLE_RENDERER_D3D_D3D9_BUFFER9_H_
  
  #include "common/MemoryBuffer.h"
  #include "libANGLE/angletypes.h"
  #include "libANGLE/renderer/d3d/BufferD3D.h"
  
  namespace rx
  {
  class Renderer9;
  
  class Buffer9 : public BufferD3D
  {
    public:
      Buffer9(Renderer9 *renderer);
      virtual ~Buffer9();
  
      // BufferD3D implementation
      virtual size_t getSize() const { return mSize; }
      virtual bool supportsDirectBinding() const { return false; }
      gl::Error getData(const uint8_t **outData) override;
  
      // BufferImpl implementation
      virtual gl::Error setData(const void* data, size_t size, GLenum usage);
      virtual gl::Error setSubData(const void* data, size_t size, size_t offset);
      virtual gl::Error copySubData(BufferImpl* source, GLintptr sourceOffset, GLintptr destOffset, GLsizeiptr size);
      virtual gl::Error map(GLenum access, GLvoid **mapPtr);
      virtual gl::Error mapRange(size_t offset, size_t length, GLbitfield access, GLvoid **mapPtr);
      virtual gl::Error unmap(GLboolean *result);
      virtual void markTransformFeedbackUsage();
  
    private:
      Renderer9 *mRenderer;
      MemoryBuffer mMemory;
      size_t mSize;
  };
  
  }
  
  #endif // LIBANGLE_RENDERER_D3D_D3D9_BUFFER9_H_
  

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