kc3-lang/angle/src/libANGLE/renderer/d3d/d3d11/IndexBuffer11.cpp

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• Hash : f015ae81
  Author :
  Date : 2021-08-02T12:47:32
  

  Implement onLabelUpdate method.
  
  This change will implement the onLabelUpdate method by calling from
  every TextureStorage object. Instead of using setDebugName,
  introduced two new functions, setInternalName and setKHRDebugLabel,
  which will set the internal name and KHR label respectively that will
  further be sent to D3D string.
  
  Bug: chromium:1164111
  Change-Id: I401ca9f6e8a2099a8807f0d7f321efe74269f9f0
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3067921
  Reviewed-by: Rafael Cintron <rafael.cintron@microsoft.com>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  Commit-Queue: Rafael Cintron <rafael.cintron@microsoft.com>
  

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• src/libANGLE/renderer/d3d/d3d11/IndexBuffer11.cpp

• //
  // Copyright 2012 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.
  //
  
  // IndexBuffer11.cpp: Defines the D3D11 IndexBuffer implementation.
  
  #include "libANGLE/renderer/d3d/d3d11/IndexBuffer11.h"
  
  #include "libANGLE/Context.h"
  #include "libANGLE/renderer/d3d/d3d11/Context11.h"
  #include "libANGLE/renderer/d3d/d3d11/Renderer11.h"
  #include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
  
  namespace rx
  {
  
  IndexBuffer11::IndexBuffer11(Renderer11 *const renderer)
      : mRenderer(renderer),
        mBuffer(),
        mBufferSize(0),
        mIndexType(gl::DrawElementsType::InvalidEnum),
        mDynamicUsage(false)
  {}
  
  IndexBuffer11::~IndexBuffer11() {}
  
  angle::Result IndexBuffer11::initialize(const gl::Context *context,
                                          unsigned int bufferSize,
                                          gl::DrawElementsType indexType,
                                          bool dynamic)
  {
      mBuffer.reset();
  
      updateSerial();
  
      if (bufferSize > 0)
      {
          D3D11_BUFFER_DESC bufferDesc;
          bufferDesc.ByteWidth           = bufferSize;
          bufferDesc.Usage               = D3D11_USAGE_DYNAMIC;
          bufferDesc.BindFlags           = D3D11_BIND_INDEX_BUFFER;
          bufferDesc.CPUAccessFlags      = D3D11_CPU_ACCESS_WRITE;
          bufferDesc.MiscFlags           = 0;
          bufferDesc.StructureByteStride = 0;
  
          ANGLE_TRY(mRenderer->allocateResource(GetImplAs<Context11>(context), bufferDesc, &mBuffer));
  
          if (dynamic)
          {
              mBuffer.setInternalName("IndexBuffer11(dynamic)");
          }
          else
          {
              mBuffer.setInternalName("IndexBuffer11(static)");
          }
      }
  
      mBufferSize   = bufferSize;
      mIndexType    = indexType;
      mDynamicUsage = dynamic;
  
      return angle::Result::Continue;
  }
  
  angle::Result IndexBuffer11::mapBuffer(const gl::Context *context,
                                         unsigned int offset,
                                         unsigned int size,
                                         void **outMappedMemory)
  {
      Context11 *context11 = GetImplAs<Context11>(context);
      ANGLE_CHECK_HR(context11, mBuffer.valid(), "Internal index buffer is not initialized.",
                     E_OUTOFMEMORY);
  
      // Check for integer overflows and out-out-bounds map requests
      bool outOfBounds = (offset + size < offset || offset + size > mBufferSize);
      ANGLE_CHECK_HR(context11, !outOfBounds, "Index buffer map range is not inside the buffer.",
                     E_OUTOFMEMORY);
  
      D3D11_MAPPED_SUBRESOURCE mappedResource;
      ANGLE_TRY(mRenderer->mapResource(context, mBuffer.get(), 0, D3D11_MAP_WRITE_NO_OVERWRITE, 0,
                                       &mappedResource));
  
      *outMappedMemory = static_cast<char *>(mappedResource.pData) + offset;
      return angle::Result::Continue;
  }
  
  angle::Result IndexBuffer11::unmapBuffer(const gl::Context *context)
  {
      Context11 *context11 = GetImplAs<Context11>(context);
      ANGLE_CHECK_HR(context11, mBuffer.valid(), "Internal index buffer is not initialized.",
                     E_OUTOFMEMORY);
  
      ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
      dxContext->Unmap(mBuffer.get(), 0);
      return angle::Result::Continue;
  }
  
  gl::DrawElementsType IndexBuffer11::getIndexType() const
  {
      return mIndexType;
  }
  
  unsigned int IndexBuffer11::getBufferSize() const
  {
      return mBufferSize;
  }
  
  angle::Result IndexBuffer11::setSize(const gl::Context *context,
                                       unsigned int bufferSize,
                                       gl::DrawElementsType indexType)
  {
      if (bufferSize > mBufferSize || indexType != mIndexType)
      {
          return initialize(context, bufferSize, indexType, mDynamicUsage);
      }
  
      return angle::Result::Continue;
  }
  
  angle::Result IndexBuffer11::discard(const gl::Context *context)
  {
      Context11 *context11 = GetImplAs<Context11>(context);
      ANGLE_CHECK_HR(context11, mBuffer.valid(), "Internal index buffer is not initialized.",
                     E_OUTOFMEMORY);
  
      ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
  
      D3D11_MAPPED_SUBRESOURCE mappedResource;
      ANGLE_TRY(mRenderer->mapResource(context, mBuffer.get(), 0, D3D11_MAP_WRITE_DISCARD, 0,
                                       &mappedResource));
  
      dxContext->Unmap(mBuffer.get(), 0);
  
      return angle::Result::Continue;
  }
  
  DXGI_FORMAT IndexBuffer11::getIndexFormat() const
  {
      switch (mIndexType)
      {
          case gl::DrawElementsType::UnsignedByte:
              return DXGI_FORMAT_R16_UINT;
          case gl::DrawElementsType::UnsignedShort:
              return DXGI_FORMAT_R16_UINT;
          case gl::DrawElementsType::UnsignedInt:
              return DXGI_FORMAT_R32_UINT;
          default:
              UNREACHABLE();
              return DXGI_FORMAT_UNKNOWN;
      }
  }
  
  const d3d11::Buffer &IndexBuffer11::getBuffer() const
  {
      return mBuffer;
  }
  
  }  // namespace rx
  

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