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

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• Hash : d51fbe34
  Author :
  Date : 2019-01-25T15:03:39
  

  Fold buffer access validation into extensions.
  
  We only need to perform vertex array buffer validation if the WebGL
  compatiblity extension is enabled and robust access is not available.
  Although sometimes the range checks are useful for determining
  undefined behaviour they are not required by the OpenGL spec. They also
  slow down state updates significantly.
  
  This migrates the OOR tests into specific WebGL tests. It also requires
  a change to a Chromium test on the passthrough decoder.
  
  Improves perf by about 10% in the Vulkan VBO state change test.
  
  Also fixes some robust resource access cases for D3D11.
  
  Bug: angleproject:3000
  Change-Id: Ice37f38f01c2f27bf32ed55657a30e69d8508335
  Reviewed-on: https://chromium-review.googlesource.com/c/1390362
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Commit-Queue: Jamie Madill <jmadill@chromium.org>
  

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• src/libANGLE/renderer/d3d/d3d9/Buffer9.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.
  //
  
  // Buffer9.cpp Defines the Buffer9 class.
  
  #include "libANGLE/renderer/d3d/d3d9/Buffer9.h"
  
  #include "libANGLE/Context.h"
  #include "libANGLE/renderer/d3d/d3d9/Renderer9.h"
  
  namespace rx
  {
  
  Buffer9::Buffer9(const gl::BufferState &state, Renderer9 *renderer)
      : BufferD3D(state, renderer), mSize(0)
  {}
  
  Buffer9::~Buffer9()
  {
      mSize = 0;
  }
  
  size_t Buffer9::getSize() const
  {
      return mSize;
  }
  
  bool Buffer9::supportsDirectBinding() const
  {
      return false;
  }
  
  angle::Result Buffer9::setData(const gl::Context *context,
                                 gl::BufferBinding target,
                                 const void *data,
                                 size_t size,
                                 gl::BufferUsage usage)
  {
      if (size > mMemory.size())
      {
          ANGLE_CHECK_GL_ALLOC(GetImplAs<Context9>(context), mMemory.resize(size));
      }
  
      mSize = size;
      if (data && size > 0)
      {
          memcpy(mMemory.data(), data, size);
      }
  
      updateD3DBufferUsage(context, usage);
  
      invalidateStaticData(context);
  
      return angle::Result::Continue;
  }
  
  angle::Result Buffer9::getData(const gl::Context *context, const uint8_t **outData)
  {
      if (mMemory.empty())
      {
          *outData = nullptr;
      }
      else
      {
          *outData = mMemory.data();
      }
      return angle::Result::Continue;
  }
  
  angle::Result Buffer9::setSubData(const gl::Context *context,
                                    gl::BufferBinding target,
                                    const void *data,
                                    size_t size,
                                    size_t offset)
  {
      if (offset + size > mMemory.size())
      {
          ANGLE_CHECK_GL_ALLOC(GetImplAs<Context9>(context), mMemory.resize(size + offset));
      }
  
      mSize = std::max(mSize, offset + size);
      if (data && size > 0)
      {
          memcpy(mMemory.data() + offset, data, size);
      }
  
      invalidateStaticData(context);
  
      return angle::Result::Continue;
  }
  
  angle::Result Buffer9::copySubData(const gl::Context *context,
                                     BufferImpl *source,
                                     GLintptr sourceOffset,
                                     GLintptr destOffset,
                                     GLsizeiptr size)
  {
      // Note: this method is currently unreachable
      Buffer9 *sourceBuffer = GetAs<Buffer9>(source);
      ASSERT(sourceBuffer);
  
      memcpy(mMemory.data() + destOffset, sourceBuffer->mMemory.data() + sourceOffset, size);
  
      invalidateStaticData(context);
  
      return angle::Result::Continue;
  }
  
  // We do not support buffer mapping in D3D9
  angle::Result Buffer9::map(const gl::Context *context, GLenum access, void **mapPtr)
  {
      ANGLE_HR_UNREACHABLE(GetImplAs<Context9>(context));
      return angle::Result::Stop;
  }
  
  angle::Result Buffer9::mapRange(const gl::Context *context,
                                  size_t offset,
                                  size_t length,
                                  GLbitfield access,
                                  void **mapPtr)
  {
      ANGLE_HR_UNREACHABLE(GetImplAs<Context9>(context));
      return angle::Result::Stop;
  }
  
  angle::Result Buffer9::unmap(const gl::Context *context, GLboolean *result)
  {
      ANGLE_HR_UNREACHABLE(GetImplAs<Context9>(context));
      return angle::Result::Stop;
  }
  
  angle::Result Buffer9::markTransformFeedbackUsage(const gl::Context *context)
  {
      ANGLE_HR_UNREACHABLE(GetImplAs<Context9>(context));
      return angle::Result::Stop;
  }
  
  }  // namespace rx
  

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