kc3-lang/angle/src/libANGLE/renderer/gl/BufferGL.h

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• Hash : 8f775607
  Author :
  Date : 2016-11-03T16:45:34
  

  Introduce a gl::BufferState class.
  
  This state can share vital pieces of information with the impl.
  The most elementary state is the buffer size, which then the
  impl doesn't need to replicate.
  
  BUG=angleproject:1579
  
  Change-Id: I341393c64a6e49de65c1d53b1bad2fa143209862
  Reviewed-on: https://chromium-review.googlesource.com/406644
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Corentin Wallez <cwallez@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/gl/BufferGL.h

• //
  // Copyright 2015 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.
  //
  
  // BufferGL.h: Defines the class interface for BufferGL.
  
  #ifndef LIBANGLE_RENDERER_GL_BUFFERGL_H_
  #define LIBANGLE_RENDERER_GL_BUFFERGL_H_
  
  #include "common/MemoryBuffer.h"
  #include "libANGLE/renderer/BufferImpl.h"
  
  namespace rx
  {
  
  class FunctionsGL;
  class StateManagerGL;
  
  class BufferGL : public BufferImpl
  {
    public:
      BufferGL(const gl::BufferState &state,
               const FunctionsGL *functions,
               StateManagerGL *stateManager);
      ~BufferGL() override;
  
      gl::Error setData(GLenum target, const void *data, size_t size, GLenum usage) override;
      gl::Error setSubData(GLenum target, const void *data, size_t size, size_t offset) override;
      gl::Error copySubData(BufferImpl* source, GLintptr sourceOffset, GLintptr destOffset, GLsizeiptr size) override;
      gl::Error map(GLenum access, GLvoid **mapPtr) override;
      gl::Error mapRange(size_t offset, size_t length, GLbitfield access, GLvoid **mapPtr) override;
      gl::Error unmap(GLboolean *result) override;
  
      gl::Error getIndexRange(GLenum type,
                              size_t offset,
                              size_t count,
                              bool primitiveRestartEnabled,
                              gl::IndexRange *outRange) override;
  
      GLuint getBufferID() const;
  
    private:
      bool mIsMapped;
      size_t mMapOffset;
      size_t mMapSize;
  
      bool mShadowBufferData;
      MemoryBuffer mShadowCopy;
  
      size_t mBufferSize;
  
      const FunctionsGL *mFunctions;
      StateManagerGL *mStateManager;
  
      GLuint mBufferID;
  };
  
  }
  
  #endif // LIBANGLE_RENDERER_GL_BUFFERGL_H_
  

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