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 56 protected: 57 // Set the image target of this sibling 58 void setTargetImage(const gl::Context *context, egl::Image *imageTarget); 59 60 // Orphan all EGL image sources and targets 61 angle::Result orphanImages(const gl::Context *context); 62 63 void notifySiblings(angle::SubjectMessage message); 64 65 private: 66 friend class Image; 67 68 // Called from Image only to add a new source image 69 void addImageSource(egl::Image *imageSource); 70 71 // Called from Image only to remove a source image when the Image is being deleted 72 void removeImageSource(egl::Image *imageSource); 73 74 std::set<Image *> mSourcesOf; 75 BindingPointer<Image> mTargetOf; 76 }; 77 78 // Wrapper for EGLImage sources that are not owned by ANGLE, these often have to do 79 // platform-specific queries for format and size information. 80 class ExternalImageSibling : public ImageSibling 81 { 82 public: 83 ExternalImageSibling(rx::EGLImplFactory *factory, 84 const gl::Context *context, 85 EGLenum target, 86 EGLClientBuffer buffer, 87 const AttributeMap &attribs); 88 ~ExternalImageSibling() override; 89 90 void onDestroy(const egl::Display *display); 91 92 Error initialize(const Display *display); 93 94 gl::Extents getAttachmentSize(const gl::ImageIndex &imageIndex) const override; 95 gl::Format getAttachmentFormat(GLenum binding, const gl::ImageIndex &imageIndex) const override; 96 GLsizei getAttachmentSamples(const gl::ImageIndex &imageIndex) const override; 97 bool isRenderable(const gl::Context *context, 98 GLenum binding, 99 const gl::ImageIndex &imageIndex) const override; 100 bool isTextureable(const gl::Context *context) const; 101 bool isYUV() const override; 102 103 void onAttach(const gl::Context *context, rx::Serial framebufferSerial) override; 104 void onDetach(const gl::Context *context, rx::Serial framebufferSerial) override; 105 GLuint getId() const override; 106 107 gl::InitState initState(const gl::ImageIndex &imageIndex) const override; 108 void setInitState(const gl::ImageIndex &imageIndex, gl::InitState initState) override; 109 110 rx::ExternalImageSiblingImpl *getImplementation() const; 111 112 protected: 113 rx::FramebufferAttachmentObjectImpl *getAttachmentImpl() const override; 114 115 private: 116 // ObserverInterface implementation. 117 void onSubjectStateChange(angle::SubjectIndex index, angle::SubjectMessage message) override; 118 119 std::unique_ptr<rx::ExternalImageSiblingImpl> mImplementation; 120 angle::ObserverBinding mImplObserverBinding; 121 }; 122 123 struct ImageState : private angle::NonCopyable 124 { 125 ImageState(EGLenum target, ImageSibling *buffer, const AttributeMap &attribs); 126 ~ImageState(); 127 128 EGLLabelKHR label; 129 EGLenum target; 130 gl::ImageIndex imageIndex; 131 ImageSibling *source; 132 std::set<ImageSibling *> targets; 133 134 gl::Format format; 135 bool yuv; 136 gl::Extents size; 137 size_t samples; 138 EGLenum sourceType; 139 EGLenum colorspace; 140 }; 141 142 class Image final : public RefCountObject, public LabeledObject 143 { 144 public: 145 Image(rx::EGLImplFactory *factory, 146 const gl::Context *context, 147 EGLenum target, 148 ImageSibling *buffer, 149 const AttributeMap &attribs); 150 151 void onDestroy(const Display *display) override; 152 ~Image() override; 153 154 void setLabel(EGLLabelKHR label) override; 155 EGLLabelKHR getLabel() const override; 156 157 const gl::Format &getFormat() const; 158 bool isRenderable(const gl::Context *context) const; 159 bool isTexturable(const gl::Context *context) const; 160 bool isYUV() const; 161 size_t getWidth() const; 162 size_t getHeight() const; 163 bool isLayered() const; 164 size_t getSamples() const; 165 166 Error initialize(const Display *display); 167 168 rx::ImageImpl *getImplementation() const; 169 170 bool orphaned() const; 171 gl::InitState sourceInitState() const; 172 void setInitState(gl::InitState initState); 173 174 private: 175 friend class ImageSibling; 176 177 // Called from ImageSibling only notify the image that a new target sibling exists for state 178 // tracking. 179 void addTargetSibling(ImageSibling *sibling); 180 181 // Called from ImageSibling only to notify the image that a sibling (source or target) has 182 // been respecified and state tracking should be updated. 183 angle::Result orphanSibling(const gl::Context *context, ImageSibling *sibling); 184 185 void notifySiblings(const ImageSibling *notifier, angle::SubjectMessage message); 186 187 ImageState mState; 188 rx::ImageImpl *mImplementation; 189 bool mOrphanedAndNeedsInit; 190 }; 191 } // namespace egl 192 193 #endif // LIBANGLE_IMAGE_H_ 194