chromium/third_party/angle/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/SimpleMutex.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 = …;
constexpr size_t kTextureImageSiblingMessageIndex      = …;
}  // namespace rx

namespace egl
{
class Image;
class Display;
class ContextMutex;

// 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
{ … };

// 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
{ … };

struct ImageState : private angle::NonCopyable
{ … };

class Image final : public ThreadSafeRefCountObject, public LabeledObject
{ … };
}  // namespace egl

#endif  // LIBANGLE_IMAGE_H_