2fe102768a
A better alternative is to return the damage region in the beginFrame() function. This way, the render backend can force full screen repaints or indicate what parts of the buffer needs to be repainted (for buffer age)
43 lines
884 B
C++
43 lines
884 B
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2015 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#ifndef KWIN_SCENE_QPAINTER_VIRTUAL_BACKEND_H
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#define KWIN_SCENE_QPAINTER_VIRTUAL_BACKEND_H
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#include "qpainterbackend.h"
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#include <QObject>
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#include <QVector>
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namespace KWin
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{
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class VirtualBackend;
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class VirtualQPainterBackend : public QPainterBackend
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{
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Q_OBJECT
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public:
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VirtualQPainterBackend(VirtualBackend *backend);
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~VirtualQPainterBackend() override;
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QImage *bufferForScreen(int screenId) override;
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QRegion beginFrame(int screenId) override;
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void endFrame(int screenId, const QRegion &damage) override;
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private:
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void createOutputs();
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QVector<QImage> m_backBuffers;
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VirtualBackend *m_backend;
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int m_frameCounter = 0;
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};
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}
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#endif
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