File indexing completed on 2025-04-13 04:59:24

 /*
     SPDX-FileCopyrightText: 2021 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
 
     SPDX-License-Identifier: GPL-2.0-or-later
 */
 
 #pragma once
 
 #include "core/rendertarget.h"
 #include "effect/globals.h"
 
 #include <QObject>
 
 #include <memory>
 
 namespace KWin
 {
 
 class GraphicsBuffer;
 class GraphicsBufferAllocator;
 class Output;
 class OverlayWindow;
 class OutputLayer;
 class SurfacePixmap;
 class SurfacePixmapX11;
 class SurfaceTexture;
 class PresentationFeedback;
 class RenderLoop;
 
 class PresentationFeedback
 {
 public:
     explicit PresentationFeedback() = default;
     PresentationFeedback(const PresentationFeedback &copy) = delete;
     PresentationFeedback(PresentationFeedback &&move) = default;
     virtual ~PresentationFeedback() = default;
 
     virtual void presented(std::chrono::nanoseconds refreshCycleDuration, std::chrono::nanoseconds timestamp, PresentationMode mode) = 0;
 };
 
 class KWIN_EXPORT OutputFrame
 {
 public:
     explicit OutputFrame(RenderLoop *loop);
     ~OutputFrame();
 
     void presented(std::chrono::nanoseconds refreshDuration, std::chrono::nanoseconds timestamp, std::chrono::nanoseconds renderTime, PresentationMode mode);
     void failed();
 
     void addFeedback(std::unique_ptr<PresentationFeedback> &&feedback);
 
     void setContentType(ContentType type);
     std::optional<ContentType> contentType() const;
 
     void setPresentationMode(PresentationMode mode);
     PresentationMode presentationMode() const;
 
 private:
     RenderLoop *const m_loop;
     std::vector<std::unique_ptr<PresentationFeedback>> m_feedbacks;
     std::optional<ContentType> m_contentType;
     PresentationMode m_presentationMode = PresentationMode::VSync;
 };
 
 /**
  * The RenderBackend class is the base class for all rendering backends.
  */
 class KWIN_EXPORT RenderBackend : public QObject
 {
     Q_OBJECT
 
 public:
     explicit RenderBackend(QObject *parent = nullptr);
 
     virtual CompositingType compositingType() const = 0;
     virtual OverlayWindow *overlayWindow() const;
 
     virtual bool checkGraphicsReset();
 
     virtual OutputLayer *primaryLayer(Output *output) = 0;
     virtual OutputLayer *cursorLayer(Output *output);
     virtual void present(Output *output, const std::shared_ptr<OutputFrame> &frame) = 0;
 
     virtual GraphicsBufferAllocator *graphicsBufferAllocator() const;
 
     virtual bool testImportBuffer(GraphicsBuffer *buffer);
     virtual QHash<uint32_t, QList<uint64_t>> supportedFormats() const;
 
     virtual std::unique_ptr<SurfaceTexture> createSurfaceTextureX11(SurfacePixmapX11 *pixmap);
     virtual std::unique_ptr<SurfaceTexture> createSurfaceTextureWayland(SurfacePixmap *pixmap);
 };
 
 } // namespace KWin