kc3-lang/angle/src/libANGLE/renderer/wgpu/TextureWgpu.h

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• Hash : 03068e0c
  Author :
  Date : 2025-08-20T17:36:22
  

  [WebGPU] Implement direct copy for images.
  
  This CL implements CopyImage specifically in cases
  where the source is the same size and format as the
  destination.
  
  Bug: angleproject:438268609
  Change-Id: Icf5f3685bb2f49874d996883c839515314f1c189
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/6842317
  Commit-Queue: Liza Burakova <liza@chromium.org>
  Reviewed-by: Matthew Denton <mpdenton@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/renderer/wgpu/TextureWgpu.h

• //
  // Copyright 2024 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.
  //
  // TextureWgpu.h:
  //    Defines the class interface for TextureWgpu, implementing TextureImpl.
  //
  
  #ifndef LIBANGLE_RENDERER_WGPU_TEXTUREWGPU_H_
  #define LIBANGLE_RENDERER_WGPU_TEXTUREWGPU_H_
  
  #include "libANGLE/renderer/TextureImpl.h"
  #include "libANGLE/renderer/wgpu/ContextWgpu.h"
  #include "libANGLE/renderer/wgpu/RenderTargetWgpu.h"
  #include "libANGLE/renderer/wgpu/wgpu_helpers.h"
  
  namespace rx
  {
  
  class TextureWgpu : public TextureImpl, public angle::ObserverInterface
  {
    public:
      TextureWgpu(const gl::TextureState &state);
      ~TextureWgpu() override;
  
      void onDestroy(const gl::Context *context) override;
  
      angle::Result setImage(const gl::Context *context,
                             const gl::ImageIndex &index,
                             GLenum internalFormat,
                             const gl::Extents &size,
                             GLenum format,
                             GLenum type,
                             const gl::PixelUnpackState &unpack,
                             gl::Buffer *unpackBuffer,
                             const uint8_t *pixels) override;
      angle::Result setSubImage(const gl::Context *context,
                                const gl::ImageIndex &index,
                                const gl::Box &area,
                                GLenum format,
                                GLenum type,
                                const gl::PixelUnpackState &unpack,
                                gl::Buffer *unpackBuffer,
                                const uint8_t *pixels) override;
  
      angle::Result setCompressedImage(const gl::Context *context,
                                       const gl::ImageIndex &index,
                                       GLenum internalFormat,
                                       const gl::Extents &size,
                                       const gl::PixelUnpackState &unpack,
                                       size_t imageSize,
                                       const uint8_t *pixels) override;
      angle::Result setCompressedSubImage(const gl::Context *context,
                                          const gl::ImageIndex &index,
                                          const gl::Box &area,
                                          GLenum format,
                                          const gl::PixelUnpackState &unpack,
                                          size_t imageSize,
                                          const uint8_t *pixels) override;
  
      angle::Result copyImage(const gl::Context *context,
                              const gl::ImageIndex &index,
                              const gl::Rectangle &sourceArea,
                              GLenum internalFormat,
                              gl::Framebuffer *source) override;
      angle::Result copySubImage(const gl::Context *context,
                                 const gl::ImageIndex &index,
                                 const gl::Offset &destOffset,
                                 const gl::Rectangle &sourceArea,
                                 gl::Framebuffer *source) override;
  
      angle::Result copyTexture(const gl::Context *context,
                                const gl::ImageIndex &index,
                                GLenum internalFormat,
                                GLenum type,
                                GLint sourceLevel,
                                bool unpackFlipY,
                                bool unpackPremultiplyAlpha,
                                bool unpackUnmultiplyAlpha,
                                const gl::Texture *source) override;
      angle::Result copySubTexture(const gl::Context *context,
                                   const gl::ImageIndex &index,
                                   const gl::Offset &destOffset,
                                   GLint sourceLevel,
                                   const gl::Box &sourceBox,
                                   bool unpackFlipY,
                                   bool unpackPremultiplyAlpha,
                                   bool unpackUnmultiplyAlpha,
                                   const gl::Texture *source) override;
  
      angle::Result copyRenderbufferSubData(const gl::Context *context,
                                            const gl::Renderbuffer *srcBuffer,
                                            GLint srcLevel,
                                            GLint srcX,
                                            GLint srcY,
                                            GLint srcZ,
                                            GLint dstLevel,
                                            GLint dstX,
                                            GLint dstY,
                                            GLint dstZ,
                                            GLsizei srcWidth,
                                            GLsizei srcHeight,
                                            GLsizei srcDepth) override;
  
      angle::Result copyTextureSubData(const gl::Context *context,
                                       const gl::Texture *srcTexture,
                                       GLint srcLevel,
                                       GLint srcX,
                                       GLint srcY,
                                       GLint srcZ,
                                       GLint dstLevel,
                                       GLint dstX,
                                       GLint dstY,
                                       GLint dstZ,
                                       GLsizei srcWidth,
                                       GLsizei srcHeight,
                                       GLsizei srcDepth) override;
  
      angle::Result copyCompressedTexture(const gl::Context *context,
                                          const gl::Texture *source) override;
  
      angle::Result setStorage(const gl::Context *context,
                               gl::TextureType type,
                               size_t levels,
                               GLenum internalFormat,
                               const gl::Extents &size) override;
  
      angle::Result setStorageExternalMemory(const gl::Context *context,
                                             gl::TextureType type,
                                             size_t levels,
                                             GLenum internalFormat,
                                             const gl::Extents &size,
                                             gl::MemoryObject *memoryObject,
                                             GLuint64 offset,
                                             GLbitfield createFlags,
                                             GLbitfield usageFlags,
                                             const void *imageCreateInfoPNext) override;
  
      angle::Result setEGLImageTarget(const gl::Context *context,
                                      gl::TextureType type,
                                      egl::Image *image) override;
  
      angle::Result setImageExternal(const gl::Context *context,
                                     gl::TextureType type,
                                     egl::Stream *stream,
                                     const egl::Stream::GLTextureDescription &desc) override;
  
      angle::Result generateMipmap(const gl::Context *context) override;
  
      angle::Result setBaseLevel(const gl::Context *context, GLuint baseLevel) override;
  
      angle::Result bindTexImage(const gl::Context *context, egl::Surface *surface) override;
      angle::Result releaseTexImage(const gl::Context *context) override;
  
      angle::Result syncState(const gl::Context *context,
                              const gl::Texture::DirtyBits &dirtyBits,
                              gl::Command source) override;
  
      angle::Result setStorageMultisample(const gl::Context *context,
                                          gl::TextureType type,
                                          GLsizei samples,
                                          GLint internalformat,
                                          const gl::Extents &size,
                                          bool fixedSampleLocations) override;
  
      angle::Result initializeContents(const gl::Context *context,
                                       GLenum binding,
                                       const gl::ImageIndex &imageIndex) override;
  
      angle::Result getAttachmentRenderTarget(const gl::Context *context,
                                              GLenum binding,
                                              const gl::ImageIndex &imageIndex,
                                              GLsizei samples,
                                              FramebufferAttachmentRenderTarget **rtOut) override;
  
      angle::Result ensureImageInitialized(const gl::Context *context);
  
      void releaseOwnershipOfImage(const gl::Context *context);
      webgpu::ImageHelper *getImage() const { return mImage; }
  
      // We monitor the ImageHelper and set dirty bits if the ImageHelper changes. This can
      // support changes in the ImageHelper even outside the TextureWgpu class.
      void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override;
  
    private:
      angle::Result setImageImpl(const gl::Context *context,
                                 GLenum internalFormat,
                                 GLenum type,
                                 const gl::ImageIndex &index,
                                 const gl::Extents &size,
                                 const gl::PixelUnpackState &unpack,
                                 const uint8_t *pixels);
  
      angle::Result setSubImageImpl(const gl::Context *context,
                                    const webgpu::Format &webgpuFormat,
                                    GLenum type,
                                    const gl::ImageIndex &index,
                                    const gl::Box &area,
                                    const gl::PixelUnpackState &unpack,
                                    const uint8_t *pixels);
  
      angle::Result copySubImageImpl(const gl::Context *context,
                                     const gl::ImageIndex &index,
                                     const gl::Offset &destOffset,
                                     const gl::Rectangle &sourceArea,
                                     const gl::InternalFormat &internalFormat,
                                     gl::Framebuffer *source);
  
      angle::Result initializeImage(ContextWgpu *contextWgpu, ImageMipLevels mipLevels);
      angle::Result initializeImageImpl(ContextWgpu *contextWgpu,
                                        const webgpu::Format &webgpuFormat,
                                        uint32_t levelCount,
                                        gl::LevelIndex firstLevel,
                                        const gl::Extents &size);
  
      angle::Result redefineLevel(const gl::Context *context,
                                  const webgpu::Format &webgpuFormat,
                                  const gl::ImageIndex &index,
                                  const gl::Extents &size);
  
      uint32_t getMipLevelCount(ImageMipLevels mipLevels) const;
  
      uint32_t getMaxLevelCount() const;
      angle::Result respecifyImageStorageIfNecessary(ContextWgpu *contextWgpu, gl::Command source);
      void prepareForGenerateMipmap(ContextWgpu *contextWgpu);
      angle::Result maybeUpdateBaseMaxLevels(ContextWgpu *contextWgpu);
      angle::Result initSingleLayerRenderTargets(ContextWgpu *contextWgpu,
                                                 GLuint layerCount,
                                                 gl::LevelIndex levelIndex,
                                                 gl::RenderToTextureImageIndex renderToTextureIndex);
      const webgpu::Format &getBaseLevelFormat(ContextWgpu *contextWgpu) const;
  
      void setImageHelper(webgpu::ImageHelper *imageHelper, bool ownsImageHelper);
  
      bool mOwnsImage             = false;
      webgpu::ImageHelper *mImage = nullptr;
      gl::LevelIndex mCurrentBaseLevel;
      gl::LevelIndex mCurrentMaxLevel;
      gl::CubeFaceArray<gl::TexLevelMask> mRedefinedLevels;
  
      angle::ObserverBinding mImageObserverBinding;
  
      // Render targets stored as array of vector of vectors
      //
      // - First dimension: only RenderToTextureImageIndex::Default for now.
      // - Second dimension: level
      // - Third dimension: layer
      gl::RenderToTextureImageMap<std::vector<std::vector<RenderTargetWgpu>>>
          mSingleLayerRenderTargets;
  };
  
  }  // namespace rx
  
  #endif  // LIBANGLE_RENDERER_WGPU_TEXTUREWGPU_H_
  

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