125 lines
3.2 KiB
C++
125 lines
3.2 KiB
C++
/********************************************************************
|
|
KWin - the KDE window manager
|
|
This file is part of the KDE project.
|
|
|
|
Copyright (C) 2006 Lubos Lunak <l.lunak@kde.org>
|
|
Copyright (C) 2009, 2010, 2011 Martin Gräßlin <mgraesslin@kde.org>
|
|
|
|
This program is free software; you can redistribute it and/or modify
|
|
it under the terms of the GNU General Public License as published by
|
|
the Free Software Foundation; either version 2 of the License, or
|
|
(at your option) any later version.
|
|
|
|
This program is distributed in the hope that it will be useful,
|
|
but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
GNU General Public License for more details.
|
|
|
|
You should have received a copy of the GNU General Public License
|
|
along with this program. If not, see <http://www.gnu.org/licenses/>.
|
|
*********************************************************************/
|
|
#include "backend.h"
|
|
#include <kwineffects.h>
|
|
#include <logging.h>
|
|
|
|
#include "screens.h"
|
|
|
|
#include <epoxy/gl.h>
|
|
|
|
namespace KWin
|
|
{
|
|
|
|
OpenGLBackend::OpenGLBackend()
|
|
: m_syncsToVBlank(false)
|
|
, m_blocksForRetrace(false)
|
|
, m_directRendering(false)
|
|
, m_haveBufferAge(false)
|
|
, m_failed(false)
|
|
{
|
|
}
|
|
|
|
OpenGLBackend::~OpenGLBackend()
|
|
{
|
|
}
|
|
|
|
void OpenGLBackend::setFailed(const QString &reason)
|
|
{
|
|
qCWarning(KWIN_OPENGL) << "Creating the OpenGL rendering failed: " << reason;
|
|
m_failed = true;
|
|
}
|
|
|
|
void OpenGLBackend::idle()
|
|
{
|
|
if (hasPendingFlush()) {
|
|
effects->makeOpenGLContextCurrent();
|
|
present();
|
|
}
|
|
}
|
|
|
|
void OpenGLBackend::addToDamageHistory(const QRegion ®ion)
|
|
{
|
|
if (m_damageHistory.count() > 10)
|
|
m_damageHistory.removeLast();
|
|
|
|
m_damageHistory.prepend(region);
|
|
}
|
|
|
|
QRegion OpenGLBackend::accumulatedDamageHistory(int bufferAge) const
|
|
{
|
|
QRegion region;
|
|
|
|
// Note: An age of zero means the buffer contents are undefined
|
|
if (bufferAge > 0 && bufferAge <= m_damageHistory.count()) {
|
|
for (int i = 0; i < bufferAge - 1; i++)
|
|
region |= m_damageHistory[i];
|
|
} else {
|
|
const QSize &s = screens()->size();
|
|
region = QRegion(0, 0, s.width(), s.height());
|
|
}
|
|
|
|
return region;
|
|
}
|
|
|
|
OverlayWindow* OpenGLBackend::overlayWindow() const
|
|
{
|
|
return nullptr;
|
|
}
|
|
|
|
QRegion OpenGLBackend::prepareRenderingForScreen(int screenId)
|
|
{
|
|
// fallback to repaint complete screen
|
|
return screens()->geometry(screenId);
|
|
}
|
|
|
|
void OpenGLBackend::endRenderingFrameForScreen(int screenId, const QRegion &damage, const QRegion &damagedRegion)
|
|
{
|
|
Q_UNUSED(screenId)
|
|
Q_UNUSED(damage)
|
|
Q_UNUSED(damagedRegion)
|
|
}
|
|
|
|
bool OpenGLBackend::perScreenRendering() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
void OpenGLBackend::copyPixels(const QRegion ®ion)
|
|
{
|
|
const int height = screens()->size().height();
|
|
for (const QRect &r : region) {
|
|
const int x0 = r.x();
|
|
const int y0 = height - r.y() - r.height();
|
|
const int x1 = r.x() + r.width();
|
|
const int y1 = height - r.y();
|
|
|
|
glBlitFramebuffer(x0, y0, x1, y1, x0, y0, x1, y1, GL_COLOR_BUFFER_BIT, GL_NEAREST);
|
|
}
|
|
}
|
|
|
|
QSharedPointer<KWin::GLTexture> OpenGLBackend::textureForOutput(AbstractOutput* output) const
|
|
{
|
|
Q_UNUSED(output)
|
|
return {};
|
|
}
|
|
|
|
}
|