kc3-lang/angle/src/libANGLE/renderer/d3d/BufferD3D.cpp

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• Hash : 5b8b1087
  Author :
  Date : 2015-02-13T11:17:34
  

  D3D: Re-init static buffer after invalidate.
  
  This allows the Buffer class to always know if it's intended to
  use static data vs dynamic. In some cases we would end up with
  NULL pointers and not know if we started with static or dynamic
  usage.
  
  BUG=angle:912
  
  Change-Id: I79ca62674543e0cf4b2ba9b31b6d8918723b31ce
  Reviewed-on: https://chromium-review.googlesource.com/249460
  Tested-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Brandon Jones <bajones@chromium.org>
  

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• src/libANGLE/renderer/d3d/BufferD3D.cpp

• //
  // 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.
  //
  
  // BufferD3D.cpp Defines common functionality between the Buffer9 and Buffer11 classes.
  
  #include "libANGLE/renderer/d3d/BufferD3D.h"
  #include "libANGLE/renderer/d3d/VertexBuffer.h"
  #include "libANGLE/renderer/d3d/IndexBuffer.h"
  
  namespace rx
  {
  
  unsigned int BufferD3D::mNextSerial = 1;
  
  BufferD3D::BufferD3D()
      : BufferImpl(),
        mStaticVertexBuffer(NULL),
        mStaticIndexBuffer(NULL)
  {
      updateSerial();
  }
  
  BufferD3D::~BufferD3D()
  {
      SafeDelete(mStaticVertexBuffer);
      SafeDelete(mStaticIndexBuffer);
  }
  
  void BufferD3D::updateSerial()
  {
      mSerial = mNextSerial++;
  }
  
  void BufferD3D::initializeStaticData()
  {
      if (!mStaticVertexBuffer)
      {
          mStaticVertexBuffer = new StaticVertexBufferInterface(getRenderer());
      }
      if (!mStaticIndexBuffer)
      {
          mStaticIndexBuffer = new StaticIndexBufferInterface(getRenderer());
      }
  }
  
  void BufferD3D::invalidateStaticData()
  {
      if ((mStaticVertexBuffer && mStaticVertexBuffer->getBufferSize() != 0) || (mStaticIndexBuffer && mStaticIndexBuffer->getBufferSize() != 0))
      {
          SafeDelete(mStaticVertexBuffer);
          SafeDelete(mStaticIndexBuffer);
  
          // Re-init static data to track that we're in a static buffer
          initializeStaticData();
      }
  
      mUnmodifiedDataUse = 0;
  }
  
  // Creates static buffers if sufficient used data has been left unmodified
  void BufferD3D::promoteStaticUsage(int dataSize)
  {
      if (!mStaticVertexBuffer && !mStaticIndexBuffer)
      {
          mUnmodifiedDataUse += dataSize;
  
          if (mUnmodifiedDataUse > 3 * getSize())
          {
              initializeStaticData();
          }
      }
  }
  
  }

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