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

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• Hash : e00ad443
  Author :
  Date : 2021-11-15T20:16:16
  

  Add EGL_ANGLE_vulkan_image extension
  
  This extension is for exporting VkImage from EGLImage.
  The VkImage must be used with the same VkDevice used by ANGLE
  Vulkan backend.
  
  Bug: chromium:1264439
  Change-Id: I222d900465cf2716d94fc64f06e240390ec518ac
  Reviewed-on: https://chromium-review.googlesource.com/c/angle/angle/+/3285025
  Reviewed-by: Shahbaz Youssefi <syoussefi@chromium.org>
  Reviewed-by: Jamie Madill <jmadill@chromium.org>
  Commit-Queue: Peng Huang <penghuang@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/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"
  
  #include <set>
  
  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 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);
  
      std::set<Image *> 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);
  
      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;
      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 hasProtectedContent() const override;
  
      void onAttach(const gl::Context *context, rx::Serial framebufferSerial) override;
      void onDetach(const gl::Context *context, rx::Serial framebufferSerial) override;
      GLuint getId() const override;
  
      gl::InitState initState(const gl::ImageIndex &imageIndex) const override;
      void setInitState(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(EGLenum target, ImageSibling *buffer, const AttributeMap &attribs);
      ~ImageState();
  
      EGLLabelKHR label;
      EGLenum target;
      gl::ImageIndex imageIndex;
      ImageSibling *source;
      std::set<ImageSibling *> targets;
  
      gl::Format format;
      bool yuv;
      gl::Extents size;
      size_t samples;
      EGLenum sourceType;
      EGLenum colorspace;
      bool hasProtectedContent;
  };
  
  class Image final : public RefCountObject, public LabeledObject
  {
    public:
      Image(rx::EGLImplFactory *factory,
            const gl::Context *context,
            EGLenum target,
            ImageSibling *buffer,
            const AttributeMap &attribs);
  
      void onDestroy(const Display *display) override;
      ~Image() override;
  
      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;
      size_t getWidth() const;
      size_t getHeight() const;
      bool isLayered() const;
      size_t getSamples() const;
      bool hasProtectedContent() const;
  
      Error initialize(const Display *display);
  
      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;
  };
  }  // namespace egl
  
  #endif  // LIBANGLE_IMAGE_H_
  

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