kc3-lang/angle/src/libANGLE/renderer/d3d/d3d11/Image11.h

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• Hash : 80da4214
  Author :
  Date : 2020-01-29T10:12:31
  

  D3D11: Copy from Image objects instead of TextureStorage when possible.
  
  glCopyTextureCHROMIUM calls in D3D11 would call getNativeTexture on the
  copy source which would allocate a TextureStorage11 if one did not
  already exist. This caused full mip-chain allocations in some cases when
  we could have just copied directly from the staging Image11.
  
  When navigating to wikipedia.org:
  
                        Peak memory | Stable memory
  Passthrough (before):      142 mb |        119 mb
  Passthrough (after):       138 mb |        106 mb
  Validating:                139 mb |        110 mb
  
  No mip-mapped textures were allocated after this change.
  
  BUG=chromium:1030835
  
  Change-Id: Icd14afaec445299423cfea293cba501d774f6ade
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/2028147
  Commit-Queue: Geoff Lang <geofflang@chromium.org>
  Reviewed-by: Rafael Cintron <rafael.cintron@microsoft.com>
  

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• src/libANGLE/renderer/d3d/d3d11/Image11.h

• //
  // 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.
  //
  
  // Image11.h: Defines the rx::Image11 class, which acts as the interface to
  // the actual underlying resources of a Texture
  
  #ifndef LIBANGLE_RENDERER_D3D_D3D11_IMAGE11_H_
  #define LIBANGLE_RENDERER_D3D_D3D11_IMAGE11_H_
  
  #include "common/debug.h"
  #include "libANGLE/ImageIndex.h"
  #include "libANGLE/renderer/d3d/ImageD3D.h"
  #include "libANGLE/renderer/d3d/d3d11/MappedSubresourceVerifier11.h"
  #include "libANGLE/renderer/d3d/d3d11/renderer11_utils.h"
  
  namespace gl
  {
  class Framebuffer;
  }
  
  namespace d3d11
  {
  template <typename T>
  class ScopedUnmapper;
  }  // namespace d3d11
  
  namespace rx
  {
  class Renderer11;
  class TextureHelper11;
  class TextureStorage11;
  struct Renderer11DeviceCaps;
  
  class Image11 : public ImageD3D
  {
    public:
      Image11(Renderer11 *renderer);
      ~Image11() override;
  
      static angle::Result GenerateMipmap(const gl::Context *context,
                                          Image11 *dest,
                                          Image11 *src,
                                          const Renderer11DeviceCaps &rendererCaps);
      static angle::Result CopyImage(const gl::Context *context,
                                     Image11 *dest,
                                     Image11 *source,
                                     const gl::Box &sourceBox,
                                     const gl::Offset &destOffset,
                                     bool unpackFlipY,
                                     bool unpackPremultiplyAlpha,
                                     bool unpackUnmultiplyAlpha,
                                     const Renderer11DeviceCaps &rendererCaps);
  
      bool isDirty() const override;
  
      angle::Result copyToStorage(const gl::Context *context,
                                  TextureStorage *storage,
                                  const gl::ImageIndex &index,
                                  const gl::Box &region) override;
  
      bool redefine(gl::TextureType type,
                    GLenum internalformat,
                    const gl::Extents &size,
                    bool forceRelease) override;
  
      DXGI_FORMAT getDXGIFormat() const;
  
      angle::Result loadData(const gl::Context *context,
                             const gl::Box &area,
                             const gl::PixelUnpackState &unpack,
                             GLenum type,
                             const void *input,
                             bool applySkipImages) override;
      angle::Result loadCompressedData(const gl::Context *context,
                                       const gl::Box &area,
                                       const void *input) override;
  
      angle::Result copyFromTexStorage(const gl::Context *context,
                                       const gl::ImageIndex &imageIndex,
                                       TextureStorage *source) override;
      angle::Result copyFromFramebuffer(const gl::Context *context,
                                        const gl::Offset &destOffset,
                                        const gl::Rectangle &sourceArea,
                                        const gl::Framebuffer *source) override;
  
      angle::Result recoverFromAssociatedStorage(const gl::Context *context);
      void verifyAssociatedStorageValid(TextureStorage11 *textureStorage) const;
      void disassociateStorage();
  
      angle::Result getStagingTexture(const gl::Context *context,
                                      const TextureHelper11 **outStagingTexture,
                                      unsigned int *outSubresourceIndex);
  
    protected:
      template <typename T>
      friend class d3d11::ScopedUnmapper;
      angle::Result map(const gl::Context *context, D3D11_MAP mapType, D3D11_MAPPED_SUBRESOURCE *map);
      void unmap();
  
    private:
      angle::Result copyWithoutConversion(const gl::Context *context,
                                          const gl::Offset &destOffset,
                                          const gl::Box &sourceArea,
                                          const TextureHelper11 &textureHelper,
                                          UINT sourceSubResource);
  
      angle::Result createStagingTexture(const gl::Context *context);
      void releaseStagingTexture();
  
      Renderer11 *mRenderer;
  
      DXGI_FORMAT mDXGIFormat;
      TextureHelper11 mStagingTexture;
      unsigned int mStagingSubresource;
      MappedSubresourceVerifier11 mStagingTextureSubresourceVerifier;
  
      bool mRecoverFromStorage;
      TextureStorage11 *mAssociatedStorage;
      gl::ImageIndex mAssociatedImageIndex;
      unsigned int mRecoveredFromStorageCount;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_D3D_D3D11_IMAGE11_H_
  

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