kc3-lang/angle/src/libGLESv2/renderer/BufferStorage9.cpp

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• Author : shannon.woods%transgaming.com@gtempaccount.com
  Date : 2013-04-13 03:39:24
  Hash : ab30bab9
  Message : Added an abstract BufferStorage::copyData method and implemented it for BufferStorage9 and BufferStorage11. TRAC #22811 Signed-off-by: Jamie Madill Signed-off-by: Shannon Woods Author: Geoff Lang git-svn-id: https://angleproject.googlecode.com/svn/branches/es3proto@2132 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/libGLESv2/renderer/BufferStorage9.cpp

• #include "precompiled.h"
  //
  // Copyright (c) 2013 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.
  //
  
  // BufferStorage9.cpp Defines the BufferStorage9 class.
  
  #include "libGLESv2/renderer/BufferStorage9.h"
  #include "common/debug.h"
  
  namespace rx
  {
  
  BufferStorage9::BufferStorage9()
  {
      mMemory = NULL;
      mAllocatedSize = 0;
      mSize = 0;
  }
  
  BufferStorage9::~BufferStorage9()
  {
      delete[] mMemory;
  }
  
  BufferStorage9 *BufferStorage9::makeBufferStorage9(BufferStorage *bufferStorage)
  {
      ASSERT(HAS_DYNAMIC_TYPE(BufferStorage9*, bufferStorage));
      return static_cast<BufferStorage9*>(bufferStorage);
  }
  
  void *BufferStorage9::getData()
  {
      return mMemory;
  }
  
  void BufferStorage9::setData(const void* data, unsigned int size, unsigned int offset)
  {
      if (!mMemory || offset + size > mAllocatedSize)
      {
          unsigned int newAllocatedSize = offset + size;
          void *newMemory = new char[newAllocatedSize];
  
          if (offset > 0 && mMemory && mAllocatedSize > 0)
          {
              memcpy(newMemory, mMemory, std::min(offset, mAllocatedSize));
          }
  
          delete[] mMemory;
          mMemory = newMemory;
          mAllocatedSize = newAllocatedSize;
      }
  
      mSize = std::max(mSize, offset + size);
      memcpy(reinterpret_cast<char*>(mMemory) + offset, data, size);
  }
  
  void BufferStorage9::copyData(BufferStorage* sourceStorage, unsigned int size,
                                unsigned int sourceOffset, unsigned int destOffset)
  {
      BufferStorage9* source = makeBufferStorage9(sourceStorage);
      if (source)
      {
          void* sourceMemory = reinterpret_cast<char*>(source->mMemory) + sourceOffset;
          void* destMemory = reinterpret_cast<char*>(mMemory) + destOffset;
  
          memcpy(destMemory, sourceMemory, size);
      }
  }
  
  void BufferStorage9::clear()
  {
      mSize = 0;
  }
  
  unsigned int BufferStorage9::getSize() const
  {
      return mSize;
  }
  
  bool BufferStorage9::supportsDirectBinding() const
  {
      return false;
  }
  
  }