kc3-lang/angle/src/libGLESv2/renderer/VertexBuffer11.cpp

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• Author : shannon.woods@transgaming.com
  Date : 2013-02-28 23:16:20
  Hash : bdf2d80f
  Message : Add precompiled header support for the libGLESv2 project. TRAC #22518 Signed-off-by: Geoff Lang Signed-off-by: Shannon Woods Author: Jamie Madill git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1938 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/libGLESv2/renderer/VertexBuffer11.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.
  //
  
  // VertexBuffer11.cpp: Defines the D3D11 VertexBuffer implementation.
  
  #include "libGLESv2/renderer/VertexBuffer11.h"
  #include "libGLESv2/renderer/BufferStorage.h"
  
  #include "libGLESv2/Buffer.h"
  #include "libGLESv2/renderer/Renderer11.h"
  #include "libGLESv2/Context.h"
  
  namespace rx
  {
  
  VertexBuffer11::VertexBuffer11(rx::Renderer11 *const renderer) : mRenderer(renderer)
  {
      mBuffer = NULL;
      mBufferSize = 0;
      mDynamicUsage = false;
  }
  
  VertexBuffer11::~VertexBuffer11()
  {
      if (mBuffer)
      {
          mBuffer->Release();
          mBuffer = NULL;
      }
  }
  
  bool VertexBuffer11::initialize(unsigned int size, bool dynamicUsage)
  {
      if (mBuffer)
      {
          mBuffer->Release();
          mBuffer = NULL;
      }
  
      updateSerial();
  
      if (size > 0)
      {
          ID3D11Device* dxDevice = mRenderer->getDevice();
  
          D3D11_BUFFER_DESC bufferDesc;
          bufferDesc.ByteWidth = size;
          bufferDesc.Usage = D3D11_USAGE_DYNAMIC;
          bufferDesc.BindFlags = D3D11_BIND_VERTEX_BUFFER;
          bufferDesc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
          bufferDesc.MiscFlags = 0;
          bufferDesc.StructureByteStride = 0;
  
          HRESULT result = dxDevice->CreateBuffer(&bufferDesc, NULL, &mBuffer);
          if (FAILED(result))
          {
              return false;
          }
      }
  
      mBufferSize = size;
      mDynamicUsage = dynamicUsage;
      return true;
  }
  
  VertexBuffer11 *VertexBuffer11::makeVertexBuffer11(VertexBuffer *vetexBuffer)
  {
      ASSERT(HAS_DYNAMIC_TYPE(VertexBuffer11*, vetexBuffer));
      return static_cast<VertexBuffer11*>(vetexBuffer);
  }
  
  bool VertexBuffer11::storeVertexAttributes(const gl::VertexAttribute &attrib, GLint start, GLsizei count,
                                             GLsizei instances, unsigned int offset)
  {
      if (mBuffer)
      {
          gl::Buffer *buffer = attrib.mBoundBuffer.get();
  
          int inputStride = attrib.stride();
          const VertexConverter &converter = getVertexConversion(attrib);
  
          ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
  
          D3D11_MAPPED_SUBRESOURCE mappedResource;
          HRESULT result = dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_NO_OVERWRITE, 0, &mappedResource);
          if (FAILED(result))
          {
              ERR("Vertex buffer map failed with error 0x%08x", result);
              return false;
          }
  
          char* output = reinterpret_cast<char*>(mappedResource.pData) + offset;
  
          const char *input = NULL;
          if (buffer)
          {
              BufferStorage *storage = buffer->getStorage();
              input = static_cast<const char*>(storage->getData()) + static_cast<int>(attrib.mOffset);
          }
          else
          {
              input = static_cast<const char*>(attrib.mPointer);
          }
  
          if (instances == 0 || attrib.mDivisor == 0)
          {
              input += inputStride * start;
          }
  
          converter.conversionFunc(input, inputStride, count, output);
  
          dxContext->Unmap(mBuffer, 0);
  
          return true;
      }
      else
      {
          ERR("Vertex buffer not initialized.");
          return false;
      }
  }
  
  bool VertexBuffer11::storeRawData(const void* data, unsigned int size, unsigned int offset)
  {
      if (mBuffer)
      {
          ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
  
          D3D11_MAPPED_SUBRESOURCE mappedResource;
          HRESULT result = dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_NO_OVERWRITE, 0, &mappedResource);
          if (FAILED(result))
          {
              ERR("Vertex buffer map failed with error 0x%08x", result);
              return false;
          }
  
          char* bufferData = static_cast<char*>(mappedResource.pData);
          memcpy(bufferData + offset, data, size);
  
          dxContext->Unmap(mBuffer, 0);
  
          return true;
      }
      else
      {
          ERR("Vertex buffer not initialized.");
          return false;
      }
  }
  
  unsigned int VertexBuffer11::getSpaceRequired(const gl::VertexAttribute &attrib, GLsizei count,
                                                GLsizei instances) const
  {
      unsigned int elementSize = getVertexConversion(attrib).outputElementSize;
  
      if (instances == 0 || attrib.mDivisor == 0)
      {
          return elementSize * count;
      }
      else
      {
          return elementSize * ((instances + attrib.mDivisor - 1) / attrib.mDivisor);
      }
  }
  
  bool VertexBuffer11::requiresConversion(const gl::VertexAttribute &attrib) const
  {
      return !getVertexConversion(attrib).identity;
  }
  
  unsigned int VertexBuffer11::getBufferSize() const
  {
      return mBufferSize;
  }
  
  bool VertexBuffer11::setBufferSize(unsigned int size)
  {
      if (size > mBufferSize)
      {
          return initialize(size, mDynamicUsage);
      }
      else
      {
          return true;
      }
  }
  
  bool VertexBuffer11::discard()
  {
      if (mBuffer)
      {
          ID3D11DeviceContext *dxContext = mRenderer->getDeviceContext();
  
          D3D11_MAPPED_SUBRESOURCE mappedResource;
          HRESULT result = dxContext->Map(mBuffer, 0, D3D11_MAP_WRITE_DISCARD, 0, &mappedResource);
          if (FAILED(result))
          {
              ERR("Vertex buffer map failed with error 0x%08x", result);
              return false;
          }
  
          dxContext->Unmap(mBuffer, 0);
  
          return true;
      }
      else
      {
          ERR("Vertex buffer not initialized.");
          return false;
      }
  }
  
  unsigned int VertexBuffer11::getVertexSize(const gl::VertexAttribute &attrib) const
  {
      return getVertexConversion(attrib).outputElementSize;
  }
  
  DXGI_FORMAT VertexBuffer11::getDXGIFormat(const gl::VertexAttribute &attrib) const
  {
      return getVertexConversion(attrib).dxgiFormat;
  }
  
  ID3D11Buffer *VertexBuffer11::getBuffer() const
  {
      return mBuffer;
  }
  
  template <typename T, unsigned int componentCount, bool widen, bool normalized>
  static void copyVertexData(const void *input, unsigned int stride, unsigned int count, void *output)
  {
      unsigned int attribSize = sizeof(T) * componentCount;
  
      if (attribSize == stride && !widen)
      {
          memcpy(output, input, count * attribSize);
      }
      else
      {
          unsigned int outputStride = widen ? 4 : componentCount;
          T defaultVal = normalized ? std::numeric_limits<T>::max() : T(1);
  
          for (unsigned int i = 0; i < count; i++)
          {
              const T *offsetInput = reinterpret_cast<const T*>(reinterpret_cast<const char*>(input) + i * stride);
              T *offsetOutput = reinterpret_cast<T*>(output) + i * outputStride;
  
              for (unsigned int j = 0; j < componentCount; j++)
              {
                  offsetOutput[j] = offsetInput[j];
              }
  
              if (widen)
              {
                  offsetOutput[3] = defaultVal;
              }
          }
      }
  }
  
  template <unsigned int componentCount>
  static void copyFixedVertexData(const void* input, unsigned int stride, unsigned int count, void* output)
  {
      static const float divisor = 1.0f / (1 << 16);
  
      for (unsigned int i = 0; i < count; i++)
      {
          const GLfixed* offsetInput = reinterpret_cast<const GLfixed*>(reinterpret_cast<const char*>(input) + stride * i);
          float* offsetOutput = reinterpret_cast<float*>(output) + i * componentCount;
  
          for (unsigned int j = 0; j < componentCount; j++)
          {
              offsetOutput[j] = static_cast<float>(offsetInput[j]) * divisor;
          }
      }
  }
  
  template <typename T, unsigned int componentCount, bool normalized>
  static void copyToFloatVertexData(const void* input, unsigned int stride, unsigned int count, void* output)
  {
      typedef std::numeric_limits<T> NL;
  
      for (unsigned int i = 0; i < count; i++)
      {
          const T *offsetInput = reinterpret_cast<const T*>(reinterpret_cast<const char*>(input) + stride * i);
          float *offsetOutput = reinterpret_cast<float*>(output) + i * componentCount;
  
          for (unsigned int j = 0; j < componentCount; j++)
          {
              if (normalized)
              {
                  if (NL::is_signed)
                  {
                      const float divisor = 1.0f / (2 * static_cast<float>(NL::max()) + 1);
                      offsetOutput[j] = (2 * static_cast<float>(offsetInput[j]) + 1) * divisor;
                  }
                  else
                  {
                      offsetOutput[j] =  static_cast<float>(offsetInput[j]) / NL::max();
                  }
              }
              else
              {
                  offsetOutput[j] =  static_cast<float>(offsetInput[j]);
              }
          }
      }
  }
  
  const VertexBuffer11::VertexConverter VertexBuffer11::mPossibleTranslations[NUM_GL_VERTEX_ATTRIB_TYPES][2][4] =
  {
      { // GL_BYTE
          { // unnormalized
              { &copyToFloatVertexData<GLbyte, 1, false>, false, DXGI_FORMAT_R32_FLOAT, 4 },
              { &copyToFloatVertexData<GLbyte, 2, false>, false, DXGI_FORMAT_R32G32_FLOAT, 8 },
              { &copyToFloatVertexData<GLbyte, 3, false>, false, DXGI_FORMAT_R32G32B32_FLOAT, 12 },
              { &copyToFloatVertexData<GLbyte, 4, false>, false, DXGI_FORMAT_R32G32B32A32_FLOAT, 16 },
          },
          { // normalized
              { &copyVertexData<GLbyte, 1, false, true>, true, DXGI_FORMAT_R8_SNORM, 1 },
              { &copyVertexData<GLbyte, 2, false, true>, true, DXGI_FORMAT_R8G8_SNORM, 2 },
              { &copyVertexData<GLbyte, 3, true, true>, false, DXGI_FORMAT_R8G8B8A8_SNORM, 4 },
              { &copyVertexData<GLbyte, 4, false, true>, true, DXGI_FORMAT_R8G8B8A8_SNORM, 4 },
          },
      },
      { // GL_UNSIGNED_BYTE
          { // unnormalized
              { &copyToFloatVertexData<GLubyte, 1, false>, false, DXGI_FORMAT_R32_FLOAT, 4 },
              { &copyToFloatVertexData<GLubyte, 2, false>, false, DXGI_FORMAT_R32G32_FLOAT, 8 },
              { &copyToFloatVertexData<GLubyte, 3, false>, false, DXGI_FORMAT_R32G32B32_FLOAT, 12 },
              { &copyToFloatVertexData<GLubyte, 4, false>, false, DXGI_FORMAT_R32G32B32A32_FLOAT, 16 },
          },
          { // normalized
              { &copyVertexData<GLubyte, 1, false, true>, true, DXGI_FORMAT_R8_UNORM, 1 },
              { &copyVertexData<GLubyte, 2, false, true>, true, DXGI_FORMAT_R8G8_UNORM, 2 },
              { &copyVertexData<GLubyte, 3, true, true>, false, DXGI_FORMAT_R8G8B8A8_UNORM, 4 },
              { &copyVertexData<GLubyte, 4, false, true>, true, DXGI_FORMAT_R8G8B8A8_UNORM, 4 },
          },
      },
      { // GL_SHORT
          { // unnormalized
              { &copyToFloatVertexData<GLshort, 1, false>, false, DXGI_FORMAT_R32_FLOAT, 4 },
              { &copyToFloatVertexData<GLshort, 2, false>, false, DXGI_FORMAT_R32G32_FLOAT, 8 },
              { &copyToFloatVertexData<GLshort, 3, false>, false, DXGI_FORMAT_R32G32B32_FLOAT, 12 },
              { &copyToFloatVertexData<GLshort, 4, false>, false, DXGI_FORMAT_R32G32B32A32_FLOAT, 16 },
          },
          { // normalized
              { &copyVertexData<GLshort, 1, false, true>, true, DXGI_FORMAT_R16_SNORM, 2 },
              { &copyVertexData<GLshort, 2, false, true>, true, DXGI_FORMAT_R16G16_SNORM, 4 },
              { &copyVertexData<GLshort, 3, true, true>, false, DXGI_FORMAT_R16G16B16A16_SNORM, 8 },
              { &copyVertexData<GLshort, 4, false, true>, true, DXGI_FORMAT_R16G16B16A16_SNORM, 8 },
          },
      },
      { // GL_UNSIGNED_SHORT
          { // unnormalized
              { &copyToFloatVertexData<GLushort, 1, false>, false, DXGI_FORMAT_R32_FLOAT, 4 },
              { &copyToFloatVertexData<GLushort, 2, false>, false, DXGI_FORMAT_R32G32_FLOAT, 8 },
              { &copyToFloatVertexData<GLushort, 3, false>, false, DXGI_FORMAT_R32G32B32_FLOAT, 12 },
              { &copyToFloatVertexData<GLushort, 4, false>, false, DXGI_FORMAT_R32G32B32A32_FLOAT, 16 },
          },
          { // normalized
              { &copyVertexData<GLushort, 1, false, true>, true, DXGI_FORMAT_R16_UNORM, 2 },
              { &copyVertexData<GLushort, 2, false, true>, true, DXGI_FORMAT_R16G16_UNORM, 4 },
              { &copyVertexData<GLushort, 3, true, true>, false, DXGI_FORMAT_R16G16B16A16_UNORM, 8 },
              { &copyVertexData<GLushort, 4, false, true>, true, DXGI_FORMAT_R16G16B16A16_UNORM, 8 },
          },
      },
      { // GL_FIXED
          { // unnormalized
              { &copyFixedVertexData<1>, false, DXGI_FORMAT_R32_FLOAT, 4 },
              { &copyFixedVertexData<2>, false, DXGI_FORMAT_R32G32_FLOAT, 8 },
              { &copyFixedVertexData<3>, false, DXGI_FORMAT_R32G32B32_FLOAT, 12 },
              { &copyFixedVertexData<4>, false, DXGI_FORMAT_R32G32B32A32_FLOAT, 16 },
          },
          { // normalized
              { &copyFixedVertexData<1>, false, DXGI_FORMAT_R32_FLOAT, 4 },
              { &copyFixedVertexData<2>, false, DXGI_FORMAT_R32G32_FLOAT, 8 },
              { &copyFixedVertexData<3>, false, DXGI_FORMAT_R32G32B32_FLOAT, 12 },
              { &copyFixedVertexData<4>, false, DXGI_FORMAT_R32G32B32A32_FLOAT, 16 },
          },
      },
      { // GL_FLOAT
          { // unnormalized
              { &copyVertexData<GLfloat, 1, false, false>, true, DXGI_FORMAT_R32_FLOAT, 4 },
              { &copyVertexData<GLfloat, 2, false, false>, true, DXGI_FORMAT_R32G32_FLOAT, 8 },
              { &copyVertexData<GLfloat, 3, false, false>, true, DXGI_FORMAT_R32G32B32_FLOAT, 12 },
              { &copyVertexData<GLfloat, 4, false, false>, true, DXGI_FORMAT_R32G32B32A32_FLOAT, 16 },
          },
          { // normalized
              { &copyVertexData<GLfloat, 1, false, false>, true, DXGI_FORMAT_R32_FLOAT, 4 },
              { &copyVertexData<GLfloat, 2, false, false>, true, DXGI_FORMAT_R32G32_FLOAT, 8 },
              { &copyVertexData<GLfloat, 3, false, false>, true, DXGI_FORMAT_R32G32B32_FLOAT, 12 },
              { &copyVertexData<GLfloat, 4, false, false>, true, DXGI_FORMAT_R32G32B32A32_FLOAT, 16 },
          },
      },
  };
  
  const VertexBuffer11::VertexConverter &VertexBuffer11::getVertexConversion(const gl::VertexAttribute &attribute)
  {
      unsigned int typeIndex = 0;
      switch (attribute.mType)
      {
        case GL_BYTE:             typeIndex = 0; break;
        case GL_UNSIGNED_BYTE:    typeIndex = 1; break;
        case GL_SHORT:            typeIndex = 2; break;
        case GL_UNSIGNED_SHORT:   typeIndex = 3; break;
        case GL_FIXED:            typeIndex = 4; break;
        case GL_FLOAT:            typeIndex = 5; break;
        default:                  UNREACHABLE(); break;
      }
  
      return mPossibleTranslations[typeIndex][attribute.mNormalized ? 1 : 0][attribute.mSize - 1];
  }
  
  }