eglswapchain.h

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/*
    KWin - the KDE window manager
    This file is part of the KDE project.
 
    SPDX-FileCopyrightText: 2017 Martin Flöser <mgraesslin@kde.org>
 
    SPDX-License-Identifier: GPL-2.0-or-later
*/
#pragma once
 
#include "kwin_export.h"
 
#include <QList>
#include <QSize>
 
#include <cstdint>
#include <epoxy/egl.h>
#include <memory>
 
namespace KWin
{
 
class GraphicsBufferAllocator;
class GraphicsBuffer;
class GLFramebuffer;
class GLTexture;
class EglContext;
 
class KWIN_EXPORT EglSwapchainSlot
{
public:
    EglSwapchainSlot(GraphicsBuffer *buffer, std::unique_ptr<GLFramebuffer> &&framebuffer, const std::shared_ptr<GLTexture> &texture);
    ~EglSwapchainSlot();
 
    GraphicsBuffer *buffer() const;
    std::shared_ptr<GLTexture> texture() const;
    GLFramebuffer *framebuffer() const;
    int age() const;
 
    static std::shared_ptr<EglSwapchainSlot> create(EglContext *context, GraphicsBuffer *buffer);
 
private:
    GraphicsBuffer *m_buffer;
    std::unique_ptr<GLFramebuffer> m_framebuffer;
    std::shared_ptr<GLTexture> m_texture;
    int m_age = 0;
    friend class EglSwapchain;
};
 
class KWIN_EXPORT EglSwapchain
{
public:
    EglSwapchain(GraphicsBufferAllocator *allocator, EglContext *context, const QSize &size, uint32_t format, uint64_t modifier, const std::shared_ptr<EglSwapchainSlot> &seed);
    ~EglSwapchain();
 
    QSize size() const;
    uint32_t format() const;
    uint64_t modifier() const;
 
    std::shared_ptr<EglSwapchainSlot> acquire();
    void release(std::shared_ptr<EglSwapchainSlot> slot);
 
    static std::shared_ptr<EglSwapchain> create(GraphicsBufferAllocator *allocator, EglContext *context, const QSize &size, uint32_t format, const QList<uint64_t> &modifiers);
 
private:
    GraphicsBufferAllocator *m_allocator;
    EglContext *m_context;
    QSize m_size;
    uint32_t m_format;
    uint64_t m_modifier;
    QList<std::shared_ptr<EglSwapchainSlot>> m_slots;
};
 
} // namespace KWin