kc3-lang/angle/src/libGLESv2/renderer/Image11.cpp

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• Author : apatrick@chromium.org
  Date : 2013-01-30 21:53:40
  Hash : 8b400b1e
  Message : Do not use dynamic_cast if RTTI is disabled. Review URL: https://codereview.appspot.com/7250043 git-svn-id: https://angleproject.googlecode.com/svn/branches/dx11proto@1808 736b8ea6-26fd-11df-bfd4-992fa37f6226

• src/libGLESv2/renderer/Image11.cpp

• //
  // Copyright (c) 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.
  //
  
  // Image11.h: Implements the rx::Image11 class, which acts as the interface to
  // the actual underlying resources of a Texture
  
  #include "libGLESv2/renderer/Renderer11.h"
  #include "libGLESv2/renderer/Image11.h"
  #include "libGLESv2/renderer/TextureStorage11.h"
  #include "libGLESv2/Framebuffer.h"
  
  #include "libGLESv2/main.h"
  #include "libGLESv2/mathutil.h"
  #include "libGLESv2/renderer/renderer11_utils.h"
  #include "libGLESv2/renderer/generatemip.h"
  
  namespace rx
  {
  
  Image11::Image11()
  {
      mStagingTexture = NULL;
      mRenderer = NULL;
      mDXGIFormat = DXGI_FORMAT_UNKNOWN;
  }
  
  Image11::~Image11()
  {
      if (mStagingTexture)
      {
          mStagingTexture->Release();
      }
  }
  
  Image11 *Image11::makeImage11(Image *img)
  {
      ASSERT(HAS_DYNAMIC_TYPE(rx::Image11*, img));
      return static_cast<rx::Image11*>(img);
  }
  
  void Image11::generateMipmap(Image11 *dest, Image11 *src)
  {
      ASSERT(src->getDXGIFormat() == dest->getDXGIFormat());
      ASSERT(src->getWidth() == 1 || src->getWidth() / 2 == dest->getWidth());
      ASSERT(src->getHeight() == 1 || src->getHeight() / 2 == dest->getHeight());
  
      D3D11_MAPPED_SUBRESOURCE destMapped, srcMapped;
      dest->map(&destMapped);
      src->map(&srcMapped);
  
      const unsigned char *sourceData = reinterpret_cast<const unsigned char*>(srcMapped.pData);
      unsigned char *destData = reinterpret_cast<unsigned char*>(destMapped.pData);
  
      if (sourceData && destData)
      {
          switch (src->getDXGIFormat())
          {
            case DXGI_FORMAT_R8G8B8A8_UNORM:
            case DXGI_FORMAT_B8G8R8A8_UNORM:
              GenerateMip<R8G8B8A8>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_A8_UNORM:
              GenerateMip<A8>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R8_UNORM:
              GenerateMip<R8>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R32G32B32A32_FLOAT:
              GenerateMip<A32B32G32R32F>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R32G32B32_FLOAT:
              GenerateMip<R32G32B32F>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R16G16B16A16_FLOAT:
              GenerateMip<A16B16G16R16F>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R8G8_UNORM:
              GenerateMip<R8G8>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R16_FLOAT:
              GenerateMip<R16F>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R16G16_FLOAT:
              GenerateMip<R16G16F>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R32_FLOAT:
              GenerateMip<R32F>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            case DXGI_FORMAT_R32G32_FLOAT:
              GenerateMip<R32G32F>(src->getWidth(), src->getHeight(), sourceData, srcMapped.RowPitch, destData, destMapped.RowPitch);
              break;
            default:
              UNREACHABLE();
              break;
          }
  
          dest->unmap();
          src->unmap();
      }
  
      dest->markDirty();
  }
  
  bool Image11::isDirty() const
  {
      return (mStagingTexture && mDirty);
  }
  
  ID3D11Texture2D *Image11::getStagingTexture()
  {
      createStagingTexture();
  
      return mStagingTexture;
  }
  
  bool Image11::updateSurface(TextureStorageInterface2D *storage, int level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height)
  {
      TextureStorage11_2D *storage11 = TextureStorage11_2D::makeTextureStorage11_2D(storage->getStorageInstance());
      return storage11->updateSubresourceLevel(getStagingTexture(), level, 0, xoffset, yoffset, width, height);
  }
  
  bool Image11::updateSurface(TextureStorageInterfaceCube *storage, int face, int level, GLint xoffset, GLint yoffset, GLsizei width, GLsizei height)
  {
      TextureStorage11_Cube *storage11 = TextureStorage11_Cube::makeTextureStorage11_Cube(storage->getStorageInstance());
      return storage11->updateSubresourceLevel(getStagingTexture(), level, face, xoffset, yoffset, width, height);
  }
  
  bool Image11::redefine(Renderer *renderer, GLint internalformat, GLsizei width, GLsizei height, bool forceRelease)
  {
      if (mWidth != width ||
          mHeight != height ||
          mInternalFormat != internalformat ||
          forceRelease)
      {
          mRenderer = Renderer11::makeRenderer11(renderer);
  
          mWidth = width;
          mHeight = height;
          mInternalFormat = internalformat;
          // compute the d3d format that will be used
          mDXGIFormat = gl_d3d11::ConvertTextureFormat(internalformat);
          mActualFormat = d3d11_gl::ConvertTextureInternalFormat(mDXGIFormat);
  
          if (mStagingTexture)
          {
              mStagingTexture->Release();
              mStagingTexture = NULL;
          }
          
          return true;
      }
  
      return false;
  }
  
  bool Image11::isRenderableFormat() const
  {
      return TextureStorage11::IsTextureFormatRenderable(mDXGIFormat);
  }
  
  DXGI_FORMAT Image11::getDXGIFormat() const
  {
      // this should only happen if the image hasn't been redefined first
      // which would be a bug by the caller
      ASSERT(mDXGIFormat != DXGI_FORMAT_UNKNOWN);
  
      return mDXGIFormat;
  }
  
  // Store the pixel rectangle designated by xoffset,yoffset,width,height with pixels stored as format/type at input
  // into the target pixel rectangle.
  void Image11::loadData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                         GLint unpackAlignment, const void *input)
  {
      D3D11_MAPPED_SUBRESOURCE mappedImage;
      HRESULT result = map(&mappedImage);
      if (FAILED(result))
      {
          ERR("Could not map image for loading.");
          return;
      }
      
      GLsizei inputPitch = gl::ComputePitch(width, mInternalFormat, unpackAlignment);
      size_t pixelSize = d3d11::ComputePixelSizeBits(mDXGIFormat) / 8;
      void* offsetMappedData = (void*)((BYTE *)mappedImage.pData + (yoffset * mappedImage.RowPitch + xoffset * pixelSize));
  
      switch (mInternalFormat)
      {
        case GL_ALPHA8_EXT:
          loadAlphaDataToNative(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_LUMINANCE8_EXT:
          loadLuminanceDataToNativeOrBGRA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData, false);
          break;
        case GL_ALPHA32F_EXT:
          loadAlphaFloatDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_LUMINANCE32F_EXT:
          loadLuminanceFloatDataToRGB(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_ALPHA16F_EXT:
          loadAlphaHalfFloatDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_LUMINANCE16F_EXT:
          loadLuminanceHalfFloatDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_LUMINANCE8_ALPHA8_EXT:
          loadLuminanceAlphaDataToNativeOrBGRA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData, false);
          break;
        case GL_LUMINANCE_ALPHA32F_EXT:
          loadLuminanceAlphaFloatDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_LUMINANCE_ALPHA16F_EXT:
          loadLuminanceAlphaHalfFloatDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGB8_OES:
          loadRGBUByteDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGB565:
          loadRGB565DataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGBA8_OES:
          loadRGBAUByteDataToNative(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGBA4:
          loadRGBA4444DataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGB5_A1:
          loadRGBA5551DataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_BGRA8_EXT:
          loadBGRADataToBGRA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGB32F_EXT:
          loadRGBFloatDataToNative(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGB16F_EXT:
          loadRGBHalfFloatDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGBA32F_EXT:
          loadRGBAFloatDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        case GL_RGBA16F_EXT:
          loadRGBAHalfFloatDataToRGBA(width, height, inputPitch, input, mappedImage.RowPitch, offsetMappedData);
          break;
        default: UNREACHABLE(); 
      }
  
      unmap();
  }
  
  void Image11::loadCompressedData(GLint xoffset, GLint yoffset, GLsizei width, GLsizei height,
                                  const void *input)
  {
      ASSERT(xoffset % 4 == 0);
      ASSERT(yoffset % 4 == 0);
  
      D3D11_MAPPED_SUBRESOURCE mappedImage;
      HRESULT result = map(&mappedImage);
      if (FAILED(result))
      {
          ERR("Could not map image for loading.");
          return;
      }
  
      // Size computation assumes a 4x4 block compressed texture format
      size_t blockSize = d3d11::ComputeBlockSizeBits(mDXGIFormat) / 8;
      void* offsetMappedData = (void*)((BYTE *)mappedImage.pData + ((yoffset / 4) * mappedImage.RowPitch + (xoffset / 4) * blockSize));
  
      GLsizei inputSize = gl::ComputeCompressedSize(width, height, mInternalFormat);
      GLsizei inputPitch = gl::ComputeCompressedPitch(width, mInternalFormat);
      int rows = inputSize / inputPitch;
      for (int i = 0; i < rows; ++i)
      {
          memcpy((void*)((BYTE*)offsetMappedData + i * mappedImage.RowPitch), (void*)((BYTE*)input + i * inputPitch), inputPitch);
      }
  
      unmap();
  }
  
  void Image11::copy(GLint xoffset, GLint yoffset, GLint x, GLint y, GLsizei width, GLsizei height, gl::Framebuffer *source)
  {
      if (source->getColorbuffer() && source->getColorbuffer()->getInternalFormat() == (GLuint)mInternalFormat)
      {
          // No conversion needed-- use copyback fastpath
          ID3D11Texture2D *colorBufferTexture = NULL;
          unsigned int subresourceIndex = 0;
  
          if (mRenderer->getRenderTargetResource(source, &subresourceIndex, &colorBufferTexture))
          {
              D3D11_TEXTURE2D_DESC textureDesc;
              colorBufferTexture->GetDesc(&textureDesc);
  
              ID3D11Device *device = mRenderer->getDevice();
              ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext();
  
              ID3D11Texture2D* srcTex = NULL;
              if (textureDesc.SampleDesc.Count > 1)
              {
                  D3D11_TEXTURE2D_DESC resolveDesc;
                  resolveDesc.Width = textureDesc.Width;
                  resolveDesc.Height = textureDesc.Height;
                  resolveDesc.MipLevels = 1;
                  resolveDesc.ArraySize = 1;
                  resolveDesc.Format = textureDesc.Format;
                  resolveDesc.SampleDesc.Count = 1;
                  resolveDesc.SampleDesc.Quality = 0;
                  resolveDesc.Usage = D3D11_USAGE_DEFAULT;
                  resolveDesc.BindFlags = 0;
                  resolveDesc.CPUAccessFlags = 0;
                  resolveDesc.MiscFlags = 0;
  
                  HRESULT result = device->CreateTexture2D(&resolveDesc, NULL, &srcTex);
                  if (FAILED(result))
                  {
                      ERR("Failed to create resolve texture for Image11::copy, HRESULT: 0x%X.", result);
                      return;
                  }
  
                  deviceContext->ResolveSubresource(srcTex, 0, colorBufferTexture, subresourceIndex, textureDesc.Format);
                  subresourceIndex = 0;
              }
              else
              {
                  srcTex = colorBufferTexture;
                  srcTex->AddRef();
              }
  
              D3D11_BOX srcBox;
              srcBox.left = x;
              srcBox.right = x + width;
              srcBox.top = y;
              srcBox.bottom = y + height;
              srcBox.front = 0;
              srcBox.back = 1;
  
              deviceContext->CopySubresourceRegion(mStagingTexture, 0, xoffset, yoffset, 0, srcTex, subresourceIndex, &srcBox);
  
              srcTex->Release();
              colorBufferTexture->Release();
          }
      }
      else
      {
          // This format requires conversion, so we must copy the texture to staging and manually convert via readPixels
          D3D11_MAPPED_SUBRESOURCE mappedImage;
          HRESULT result = map(&mappedImage);
              
          mRenderer->readPixels(source, x, y, width, height, gl::ExtractFormat(mInternalFormat), 
                                gl::ExtractType(mInternalFormat), mappedImage.RowPitch, false, 4, mappedImage.pData);
  
          unmap();
      }
  }
  
  void Image11::createStagingTexture()
  {
      if (mStagingTexture)
      {
          return;
      }
  
      ID3D11Texture2D *newTexture = NULL;
      const DXGI_FORMAT dxgiFormat = getDXGIFormat();
      ASSERT(dxgiFormat != DXGI_FORMAT_D24_UNORM_S8_UINT); // We should never get here for depth textures
  
      if (mWidth != 0 && mHeight != 0)
      {
          ID3D11Device *device = mRenderer->getDevice();
  
          D3D11_TEXTURE2D_DESC desc;
          desc.Width = mWidth;
          desc.Height = mHeight;
          desc.MipLevels = desc.ArraySize = 1;
          desc.Format = dxgiFormat;
          desc.SampleDesc.Count = 1;
          desc.SampleDesc.Quality = 0;
          desc.Usage = D3D11_USAGE_STAGING;
          desc.BindFlags = 0;
          desc.CPUAccessFlags = D3D11_CPU_ACCESS_WRITE;
          desc.MiscFlags = 0;
  
          HRESULT result = device->CreateTexture2D(&desc, NULL, &newTexture);
  
          if (FAILED(result))
          {
              ASSERT(result == E_OUTOFMEMORY);
              ERR("Creating image failed.");
              return error(GL_OUT_OF_MEMORY);
          }
      }
  
      mStagingTexture = newTexture;
      mDirty = false;
  }
  
  HRESULT Image11::map(D3D11_MAPPED_SUBRESOURCE *map)
  {
      createStagingTexture();
  
      HRESULT result = D3DERR_INVALIDCALL;
  
      if (mStagingTexture)
      {
          ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext();
          result = deviceContext->Map(mStagingTexture, 0, D3D11_MAP_WRITE, 0, map);
          ASSERT(SUCCEEDED(result));
  
          mDirty = true;
      }
  
      return result;
  }
  
  void Image11::unmap()
  {
      if (mStagingTexture)
      {
          ID3D11DeviceContext *deviceContext = mRenderer->getDeviceContext();
          deviceContext->Unmap(mStagingTexture, 0);
      }
  }
  
  }