80 lines
1.3 KiB
C++
80 lines
1.3 KiB
C++
/*
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SPDX-FileCopyrightText: 2014 Fredrik Höglund <fredrik@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 "libkwineffects/kwinglutils.h"
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#include <xcb/sync.h>
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#include <xcb/xcb.h>
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namespace KWin
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{
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/**
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* SyncObject represents a fence used to synchronize operations in the kwin command stream
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* with operations in the X command stream.
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*/
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class X11SyncObject
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{
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public:
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enum State {
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Ready,
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TriggerSent,
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Waiting,
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Done,
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Resetting,
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};
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X11SyncObject();
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~X11SyncObject();
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State state() const
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{
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return m_state;
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}
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void trigger();
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void wait();
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bool finish();
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void reset();
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void finishResetting();
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private:
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State m_state;
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GLsync m_sync;
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xcb_sync_fence_t m_fence;
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xcb_get_input_focus_cookie_t m_reset_cookie;
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};
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/**
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* SyncManager manages a set of fences used for explicit synchronization with the X command
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* stream.
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*/
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class X11SyncManager
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{
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public:
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enum {
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MaxFences = 4,
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};
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static X11SyncManager *create();
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~X11SyncManager();
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bool endFrame();
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void triggerFence();
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void insertWait();
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private:
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X11SyncManager();
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X11SyncObject *m_currentFence = nullptr;
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QVector<X11SyncObject *> m_fences;
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int m_next = 0;
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};
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} // namespace KWin
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