76 lines
1.7 KiB
C++
76 lines
1.7 KiB
C++
/*
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SPDX-FileCopyrightText: 2020 Vlad Zahorodnii <vlad.zahorodnii@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#pragma once
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#include "vsyncmonitor.h"
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#include <epoxy/glx.h>
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#include <GL/glxext.h>
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#include "fixx11h.h"
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#include <QThread>
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namespace KWin
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{
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/**
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* The SGIVideoSyncVsyncMonitorHelper class is responsible for waiting for vsync events on the
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* root window. Note that the helper runs on a separate thread.
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*/
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class SGIVideoSyncVsyncMonitorHelper : public QObject
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{
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Q_OBJECT
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public:
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explicit SGIVideoSyncVsyncMonitorHelper(QObject *parent = nullptr);
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~SGIVideoSyncVsyncMonitorHelper() override;
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bool isValid() const;
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public Q_SLOTS:
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void poll();
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Q_SIGNALS:
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void errorOccurred();
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void vblankOccurred(std::chrono::nanoseconds timestamp);
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private:
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Display *m_display = nullptr;
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Window m_dummyWindow = 0;
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GLXContext m_localContext = 0;
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GLXDrawable m_drawable = 0;
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};
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/**
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* The SGIVideoSyncVsyncMonitor class monitors vblank events using the GLX_SGI_video_sync
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* extension.
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*
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* Vblank events are monitored in a separated thread to avoid blocking the main thread. In
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* order to avoid locking up the main X11 connection, the worker thread establishes its own
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* X11 connection.
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*/
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class SGIVideoSyncVsyncMonitor : public VsyncMonitor
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{
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Q_OBJECT
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public:
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static SGIVideoSyncVsyncMonitor *create(QObject *parent);
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~SGIVideoSyncVsyncMonitor() override;
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bool isValid() const;
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public Q_SLOTS:
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void arm() override;
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private:
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explicit SGIVideoSyncVsyncMonitor(QObject *parent = nullptr);
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QThread *m_thread = nullptr;
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SGIVideoSyncVsyncMonitorHelper *m_helper = nullptr;
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};
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} // namespace KWin
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