1 // 2 // Copyright 2015 The ANGLE Project Authors. All rights reserved. 3 // Use of this source code is governed by a BSD-style license that can be 4 // found in the LICENSE file. 5 // 6 7 // Image.h: Defines the egl::Image class representing the EGLimage object. 8 9 #ifndef LIBANGLE_IMAGE_H_ 10 #define LIBANGLE_IMAGE_H_ 11 12 #include "common/angleutils.h" 13 #include "libANGLE/AttributeMap.h" 14 #include "libANGLE/Debug.h" 15 #include "libANGLE/Error.h" 16 #include "libANGLE/FramebufferAttachment.h" 17 #include "libANGLE/RefCountObject.h" 18 #include "libANGLE/formatutils.h" 19 20 #include <set> 21 22 namespace rx 23 { 24 class EGLImplFactory; 25 class ImageImpl; 26 class ExternalImageSiblingImpl; 27 28 // Used for distinguishing dirty bit messages from gl::Texture/rx::TexureImpl/gl::Image. 29 constexpr size_t kTextureImageImplObserverMessageIndex = 0; 30 constexpr size_t kTextureImageSiblingMessageIndex = 1; 31 } // namespace rx 32 33 namespace egl 34 { 35 class Image; 36 class Display; 37 38 // Only currently Renderbuffers and Textures can be bound with images. This makes the relationship 39 // explicit, and also ensures that an image sibling can determine if it's been initialized or not, 40 // which is important for the robust resource init extension with Textures and EGLImages. 41 class ImageSibling : public gl::FramebufferAttachmentObject 42 { 43 public: 44 ImageSibling(); 45 ~ImageSibling() override; 46 47 bool isEGLImageTarget() const; 48 gl::InitState sourceEGLImageInitState() const; 49 void setSourceEGLImageInitState(gl::InitState initState) const; 50 51 bool isRenderable(const gl::Context *context, 52 GLenum binding, 53 const gl::ImageIndex &imageIndex) const override; 54 bool isYUV() const override; 55 bool hasProtectedContent() const override; 56 57 protected: 58 // Set the image target of this sibling 59 void setTargetImage(const gl::Context *context, egl::Image *imageTarget); 60 61 // Orphan all EGL image sources and targets 62 angle::Result orphanImages(const gl::Context *context, 63 RefCountObjectReleaser<Image> *outReleaseImage); 64 65 void notifySiblings(angle::SubjectMessage message); 66 67 private: 68 friend class Image; 69 70 // Called from Image only to add a new source image 71 void addImageSource(egl::Image *imageSource); 72 73 // Called from Image only to remove a source image when the Image is being deleted 74 void removeImageSource(egl::Image *imageSource); 75 76 std::set<Image *> mSourcesOf; 77 BindingPointer<Image> mTargetOf; 78 }; 79 80 // Wrapper for EGLImage sources that are not owned by ANGLE, these often have to do 81 // platform-specific queries for format and size information. 82 class ExternalImageSibling : public ImageSibling 83 { 84 public: 85 ExternalImageSibling(rx::EGLImplFactory *factory, 86 const gl::Context *context, 87 EGLenum target, 88 EGLClientBuffer buffer, 89 const AttributeMap &attribs); 90 ~ExternalImageSibling() override; 91 92 void onDestroy(const egl::Display *display); 93 94 Error initialize(const Display *display); 95 96 gl::Extents getAttachmentSize(const gl::ImageIndex &imageIndex) const override; 97 gl::Format getAttachmentFormat(GLenum binding, const gl::ImageIndex &imageIndex) const override; 98 GLsizei getAttachmentSamples(const gl::ImageIndex &imageIndex) const override; 99 bool isRenderable(const gl::Context *context, 100 GLenum binding, 101 const gl::ImageIndex &imageIndex) const override; 102 bool isTextureable(const gl::Context *context) const; 103 bool isYUV() const override; 104 bool hasProtectedContent() const override; 105 106 void onAttach(const gl::Context *context, rx::Serial framebufferSerial) override; 107 void onDetach(const gl::Context *context, rx::Serial framebufferSerial) override; 108 GLuint getId() const override; 109 110 gl::InitState initState(const gl::ImageIndex &imageIndex) const override; 111 void setInitState(const gl::ImageIndex &imageIndex, gl::InitState initState) override; 112 113 rx::ExternalImageSiblingImpl *getImplementation() const; 114 115 protected: 116 rx::FramebufferAttachmentObjectImpl *getAttachmentImpl() const override; 117 118 private: 119 // ObserverInterface implementation. 120 void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override; 121 122 std::unique_ptr<rx::ExternalImageSiblingImpl> mImplementation; 123 angle::ObserverBinding mImplObserverBinding; 124 }; 125 126 struct ImageState : private angle::NonCopyable 127 { 128 ImageState(EGLenum target, ImageSibling *buffer, const AttributeMap &attribs); 129 ~ImageState(); 130 131 EGLLabelKHR label; 132 EGLenum target; 133 gl::ImageIndex imageIndex; 134 ImageSibling *source; 135 std::set<ImageSibling *> targets; 136 137 gl::Format format; 138 bool yuv; 139 gl::Extents size; 140 size_t samples; 141 EGLenum sourceType; 142 EGLenum colorspace; 143 bool hasProtectedContent; 144 }; 145 146 class Image final : public RefCountObject, public LabeledObject 147 { 148 public: 149 Image(rx::EGLImplFactory *factory, 150 const gl::Context *context, 151 EGLenum target, 152 ImageSibling *buffer, 153 const AttributeMap &attribs); 154 155 void onDestroy(const Display *display) override; 156 ~Image() override; 157 158 void setLabel(EGLLabelKHR label) override; 159 EGLLabelKHR getLabel() const override; 160 161 const gl::Format &getFormat() const; 162 bool isRenderable(const gl::Context *context) const; 163 bool isTexturable(const gl::Context *context) const; 164 bool isYUV() const; 165 size_t getWidth() const; 166 size_t getHeight() const; 167 bool isLayered() const; 168 size_t getSamples() const; 169 bool hasProtectedContent() const; 170 171 Error initialize(const Display *display); 172 173 rx::ImageImpl *getImplementation() const; 174 175 bool orphaned() const; 176 gl::InitState sourceInitState() const; 177 void setInitState(gl::InitState initState); 178 179 Error exportVkImage(void *vkImage, void *vkImageCreateInfo); 180 181 private: 182 friend class ImageSibling; 183 184 // Called from ImageSibling only notify the image that a new target sibling exists for state 185 // tracking. 186 void addTargetSibling(ImageSibling *sibling); 187 188 // Called from ImageSibling only to notify the image that a sibling (source or target) has 189 // been respecified and state tracking should be updated. 190 angle::Result orphanSibling(const gl::Context *context, ImageSibling *sibling); 191 192 void notifySiblings(const ImageSibling *notifier, angle::SubjectMessage message); 193 194 ImageState mState; 195 rx::ImageImpl *mImplementation; 196 bool mOrphanedAndNeedsInit; 197 }; 198 } // namespace egl 199 200 #endif // LIBANGLE_IMAGE_H_ 201