text: //
  // 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.
  //
  
  // BufferImpl.h: Defines the abstract rx::BufferImpl class.
  
  #ifndef LIBANGLE_RENDERER_BUFFERIMPL_H_
  #define LIBANGLE_RENDERER_BUFFERIMPL_H_
  
  #include "common/angleutils.h"
  #include "common/mathutil.h"
  #include "libANGLE/Error.h"
  
  #include <stdint.h>
  
  namespace rx
  {
  
  class BufferImpl : angle::NonCopyable
  {
    public:
      virtual ~BufferImpl() { }
  
      virtual gl::Error setData(const void *data, size_t size, GLenum usage) = 0;
      virtual gl::Error setSubData(const void *data, size_t size, size_t offset) = 0;
      virtual gl::Error copySubData(BufferImpl *source,
                                    GLintptr sourceOffset,
                                    GLintptr destOffset,
                                    GLsizeiptr size) = 0;
      virtual gl::Error map(GLenum access, GLvoid **mapPtr) = 0;
      virtual gl::Error mapRange(size_t offset, size_t length, GLbitfield access, GLvoid **mapPtr) = 0;
      virtual gl::Error unmap(GLboolean *result) = 0;
  
      virtual gl::Error getIndexRange(GLenum type,
                                      size_t offset,
                                      size_t count,
                                      bool primitiveRestartEnabled,
                                      gl::IndexRange *outRange) = 0;
  };
  
  }
  
  #endif // LIBANGLE_RENDERER_BUFFERIMPL_H_
  