f26eeb9706
Currently, the OpenGLBackend and the QPainterBackend have hooks to indicate the start and the end of compositing cycle, but in both cases, the hooks have different names. This change fixes that inconsistency.
107 lines
2.3 KiB
C++
107 lines
2.3 KiB
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: 2006 Lubos Lunak <l.lunak@kde.org>
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SPDX-FileCopyrightText: 2009, 2010, 2011 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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#include "backend.h"
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#include <kwineffects.h>
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#include <logging.h>
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#include "screens.h"
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#include <epoxy/gl.h>
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namespace KWin
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{
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OpenGLBackend::OpenGLBackend()
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: m_syncsToVBlank(false)
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, m_blocksForRetrace(false)
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, m_directRendering(false)
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, m_haveBufferAge(false)
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, m_failed(false)
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{
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}
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OpenGLBackend::~OpenGLBackend()
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{
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}
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void OpenGLBackend::setFailed(const QString &reason)
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{
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qCWarning(KWIN_OPENGL) << "Creating the OpenGL rendering failed: " << reason;
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m_failed = true;
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}
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void OpenGLBackend::idle()
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{
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if (hasPendingFlush()) {
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effects->makeOpenGLContextCurrent();
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present();
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}
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}
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void OpenGLBackend::addToDamageHistory(const QRegion ®ion)
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{
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if (m_damageHistory.count() > 10)
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m_damageHistory.removeLast();
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m_damageHistory.prepend(region);
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}
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QRegion OpenGLBackend::accumulatedDamageHistory(int bufferAge) const
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{
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QRegion region;
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// Note: An age of zero means the buffer contents are undefined
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if (bufferAge > 0 && bufferAge <= m_damageHistory.count()) {
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for (int i = 0; i < bufferAge - 1; i++)
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region |= m_damageHistory[i];
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} else {
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const QSize &s = screens()->size();
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region = QRegion(0, 0, s.width(), s.height());
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}
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return region;
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}
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OverlayWindow* OpenGLBackend::overlayWindow() const
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{
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return nullptr;
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}
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bool OpenGLBackend::perScreenRendering() const
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{
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return false;
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}
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void OpenGLBackend::copyPixels(const QRegion ®ion)
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{
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const int height = screens()->size().height();
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for (const QRect &r : region) {
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const int x0 = r.x();
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const int y0 = height - r.y() - r.height();
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const int x1 = r.x() + r.width();
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const int y1 = height - r.y();
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glBlitFramebuffer(x0, y0, x1, y1, x0, y0, x1, y1, GL_COLOR_BUFFER_BIT, GL_NEAREST);
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}
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}
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QSharedPointer<KWin::GLTexture> OpenGLBackend::textureForOutput(AbstractOutput* output) const
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{
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Q_UNUSED(output)
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return {};
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}
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void OpenGLBackend::aboutToStartPainting(int screenId, const QRegion &damage)
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{
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Q_UNUSED(screenId)
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Q_UNUSED(damage)
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}
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}
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