kc3-lang/angle/src/libANGLE/Image.h

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• Hash : 1633a1bb
  Author :
  Date : 2023-02-17T15:16:06
  

  Fix EGLImage importing problem
  
  Chrome DrDC uses EGLImage to share textures between contexts.
  Sometimes, chrome will create texture with a GLES 3.x context,
  and then create EGLImage from it, and then import EGLImage to
  a GLES 2.0 (WebGL 1.0) context. In this case, ANGLE may report
  errors if the original texture is created with formats which
  are not supported with GLES 2.0, but actually the texture can
  be sampled and rendered by ANGLE. Fix the problem by adding
  mIsTexturable & mIsRenderable in Image, and calculating them
  against the original context which owns the texture.
  
  Bug: chromium:1417294
  Change-Id: I4c304422f0d0fc01a48c942d05758f8c2ce438e4
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/4265252
  Commit-Queue: Peng Huang <penghuang@chromium.org>
  Reviewed-by: Geoff Lang <geofflang@chromium.org>
  

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• src/libANGLE/Image.h

• //
  // Copyright 2015 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.
  //
  
  // Image.h: Defines the egl::Image class representing the EGLimage object.
  
  #ifndef LIBANGLE_IMAGE_H_
  #define LIBANGLE_IMAGE_H_
  
  #include "common/FastVector.h"
  #include "common/angleutils.h"
  #include "libANGLE/AttributeMap.h"
  #include "libANGLE/Debug.h"
  #include "libANGLE/Error.h"
  #include "libANGLE/FramebufferAttachment.h"
  #include "libANGLE/RefCountObject.h"
  #include "libANGLE/formatutils.h"
  
  namespace rx
  {
  class EGLImplFactory;
  class ImageImpl;
  class ExternalImageSiblingImpl;
  
  // Used for distinguishing dirty bit messages from gl::Texture/rx::TexureImpl/gl::Image.
  constexpr size_t kTextureImageImplObserverMessageIndex = 0;
  constexpr size_t kTextureImageSiblingMessageIndex      = 1;
  }  // namespace rx
  
  namespace egl
  {
  class Image;
  class Display;
  
  // Only currently Renderbuffers and Textures can be bound with images. This makes the relationship
  // explicit, and also ensures that an image sibling can determine if it's been initialized or not,
  // which is important for the robust resource init extension with Textures and EGLImages.
  class ImageSibling : public gl::FramebufferAttachmentObject
  {
    public:
      ImageSibling();
      ~ImageSibling() override;
  
      bool isEGLImageTarget() const;
      gl::InitState sourceEGLImageInitState() const;
      void setSourceEGLImageInitState(gl::InitState initState) const;
  
      bool isRenderable(const gl::Context *context,
                        GLenum binding,
                        const gl::ImageIndex &imageIndex) const override;
      bool isYUV() const override;
      bool isExternalImageWithoutIndividualSync() const override;
      bool hasFrontBufferUsage() const override;
      bool hasProtectedContent() const override;
  
    protected:
      // Set the image target of this sibling
      void setTargetImage(const gl::Context *context, egl::Image *imageTarget);
  
      // Orphan all EGL image sources and targets
      angle::Result orphanImages(const gl::Context *context,
                                 RefCountObjectReleaser<Image> *outReleaseImage);
  
      void notifySiblings(angle::SubjectMessage message);
  
    private:
      friend class Image;
  
      // Called from Image only to add a new source image
      void addImageSource(egl::Image *imageSource);
  
      // Called from Image only to remove a source image when the Image is being deleted
      void removeImageSource(egl::Image *imageSource);
  
      static constexpr size_t kSourcesOfSetSize = 2;
      angle::FlatUnorderedSet<Image *, kSourcesOfSetSize> mSourcesOf;
      BindingPointer<Image> mTargetOf;
  };
  
  // Wrapper for EGLImage sources that are not owned by ANGLE, these often have to do
  // platform-specific queries for format and size information.
  class ExternalImageSibling : public ImageSibling
  {
    public:
      ExternalImageSibling(rx::EGLImplFactory *factory,
                           const gl::Context *context,
                           EGLenum target,
                           EGLClientBuffer buffer,
                           const AttributeMap &attribs);
      ~ExternalImageSibling() override;
  
      void onDestroy(const egl::Display *display);
  
      Error initialize(const Display *display, const gl::Context *context);
  
      gl::Extents getAttachmentSize(const gl::ImageIndex &imageIndex) const override;
      gl::Format getAttachmentFormat(GLenum binding, const gl::ImageIndex &imageIndex) const override;
      GLsizei getAttachmentSamples(const gl::ImageIndex &imageIndex) const override;
      GLuint getLevelCount() const;
      bool isRenderable(const gl::Context *context,
                        GLenum binding,
                        const gl::ImageIndex &imageIndex) const override;
      bool isTextureable(const gl::Context *context) const;
      bool isYUV() const override;
      bool hasFrontBufferUsage() const override;
      bool isCubeMap() const;
      bool hasProtectedContent() const override;
  
      void onAttach(const gl::Context *context, rx::UniqueSerial framebufferSerial) override;
      void onDetach(const gl::Context *context, rx::UniqueSerial framebufferSerial) override;
      GLuint getId() const override;
  
      gl::InitState initState(GLenum binding, const gl::ImageIndex &imageIndex) const override;
      void setInitState(GLenum binding,
                        const gl::ImageIndex &imageIndex,
                        gl::InitState initState) override;
  
      rx::ExternalImageSiblingImpl *getImplementation() const;
  
    protected:
      rx::FramebufferAttachmentObjectImpl *getAttachmentImpl() const override;
  
    private:
      // ObserverInterface implementation.
      void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override;
  
      std::unique_ptr<rx::ExternalImageSiblingImpl> mImplementation;
      angle::ObserverBinding mImplObserverBinding;
  };
  
  struct ImageState : private angle::NonCopyable
  {
      ImageState(ImageID id, EGLenum target, ImageSibling *buffer, const AttributeMap &attribs);
      ~ImageState();
  
      ImageID id;
  
      EGLLabelKHR label;
      EGLenum target;
      gl::ImageIndex imageIndex;
      ImageSibling *source;
  
      gl::Format format;
      bool yuv;
      bool cubeMap;
      gl::Extents size;
      size_t samples;
      GLuint levelCount;
      EGLenum colorspace;
      bool hasProtectedContent;
  
      mutable std::mutex targetsLock;
  
      static constexpr size_t kTargetsSetSize = 2;
      angle::FlatUnorderedSet<ImageSibling *, kTargetsSetSize> targets;
  };
  
  class Image final : public RefCountObject, public LabeledObject
  {
    public:
      Image(rx::EGLImplFactory *factory,
            ImageID id,
            const gl::Context *context,
            EGLenum target,
            ImageSibling *buffer,
            const AttributeMap &attribs);
  
      void onDestroy(const Display *display) override;
      ~Image() override;
  
      ImageID id() const { return mState.id; }
  
      void setLabel(EGLLabelKHR label) override;
      EGLLabelKHR getLabel() const override;
  
      const gl::Format &getFormat() const;
      bool isRenderable(const gl::Context *context) const;
      bool isTexturable(const gl::Context *context) const;
      bool isYUV() const;
      bool isExternalImageWithoutIndividualSync() const;
      bool hasFrontBufferUsage() const;
      // Returns true only if the eglImage contains a complete cubemap
      bool isCubeMap() const;
      size_t getWidth() const;
      size_t getHeight() const;
      const gl::Extents &getExtents() const;
      bool isLayered() const;
      size_t getSamples() const;
      GLuint getLevelCount() const;
      bool hasProtectedContent() const;
  
      Error initialize(const Display *display, const gl::Context *context);
  
      rx::ImageImpl *getImplementation() const;
  
      bool orphaned() const;
      gl::InitState sourceInitState() const;
      void setInitState(gl::InitState initState);
  
      Error exportVkImage(void *vkImage, void *vkImageCreateInfo);
  
    private:
      friend class ImageSibling;
  
      // Called from ImageSibling only notify the image that a new target sibling exists for state
      // tracking.
      void addTargetSibling(ImageSibling *sibling);
  
      // Called from ImageSibling only to notify the image that a sibling (source or target) has
      // been respecified and state tracking should be updated.
      angle::Result orphanSibling(const gl::Context *context, ImageSibling *sibling);
  
      void notifySiblings(const ImageSibling *notifier, angle::SubjectMessage message);
  
      ImageState mState;
      rx::ImageImpl *mImplementation;
      bool mOrphanedAndNeedsInit;
      bool mIsTexturable = false;
      bool mIsRenderable = false;
  };
  }  // namespace egl
  
  #endif  // LIBANGLE_IMAGE_H_
  

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