129 lines
4.6 KiB
C++
129 lines
4.6 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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Copyright (C) 2007 Rivo Laks <rivolaks@hot.ee>
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This program is free software; you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation; either version 2 of the License, or
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(at your option) any later version.
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This program is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with this program. If not, see <http://www.gnu.org/licenses/>.
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*********************************************************************/
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#include "compositingprefs.h"
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#include "main.h"
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#include "xcbutils.h"
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#include "kwinglplatform.h"
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#include "utils.h"
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#include <kconfiggroup.h>
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#include <KLocalizedString>
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#include <ksharedconfig.h>
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#include <QDebug>
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#include <QOpenGLContext>
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#include <QStandardPaths>
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#include <qprocess.h>
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namespace KWin
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{
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extern int screen_number; // main.cpp
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extern bool is_multihead;
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CompositingPrefs::CompositingPrefs()
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{
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}
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CompositingPrefs::~CompositingPrefs()
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{
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}
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bool CompositingPrefs::openGlIsBroken()
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{
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (is_multihead ? QString::number(screen_number) : QString()));
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return KConfigGroup(kwinApp()->config(), "Compositing").readEntry(unsafeKey, false);
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}
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bool CompositingPrefs::compositingPossible()
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{
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// first off, check whether we figured that we'll crash on detection because of a buggy driver
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KConfigGroup gl_workaround_group(kwinApp()->config(), "Compositing");
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (is_multihead ? QString::number(screen_number) : QString()));
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if (gl_workaround_group.readEntry("Backend", "OpenGL") == QLatin1String("OpenGL") &&
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gl_workaround_group.readEntry(unsafeKey, false))
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return false;
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if (kwinApp()->shouldUseWaylandForCompositing()) {
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// don't do X specific checks if we are not going to use X for compositing
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return true;
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}
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if (!Xcb::Extensions::self()->isCompositeAvailable()) {
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qCDebug(KWIN_CORE) << "No composite extension available";
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return false;
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}
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if (!Xcb::Extensions::self()->isDamageAvailable()) {
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qCDebug(KWIN_CORE) << "No damage extension available";
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return false;
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}
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if (hasGlx())
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return true;
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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if (Xcb::Extensions::self()->isRenderAvailable() && Xcb::Extensions::self()->isFixesAvailable())
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return true;
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#endif
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if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES) {
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return true;
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} else if (qstrcmp(qgetenv("KWIN_COMPOSE"), "O2ES") == 0) {
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return true;
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}
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qCDebug(KWIN_CORE) << "No OpenGL or XRender/XFixes support";
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return false;
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}
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QString CompositingPrefs::compositingNotPossibleReason()
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{
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// first off, check whether we figured that we'll crash on detection because of a buggy driver
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KConfigGroup gl_workaround_group(kwinApp()->config(), "Compositing");
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const QString unsafeKey(QLatin1String("OpenGLIsUnsafe") + (is_multihead ? QString::number(screen_number) : QString()));
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if (gl_workaround_group.readEntry("Backend", "OpenGL") == QLatin1String("OpenGL") &&
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gl_workaround_group.readEntry(unsafeKey, false))
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return i18n("<b>OpenGL compositing (the default) has crashed KWin in the past.</b><br>"
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"This was most likely due to a driver bug."
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"<p>If you think that you have meanwhile upgraded to a stable driver,<br>"
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"you can reset this protection but <b>be aware that this might result in an immediate crash!</b></p>"
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"<p>Alternatively, you might want to use the XRender backend instead.</p>");
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if (!Xcb::Extensions::self()->isCompositeAvailable() || !Xcb::Extensions::self()->isDamageAvailable()) {
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return i18n("Required X extensions (XComposite and XDamage) are not available.");
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}
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#if !defined( KWIN_HAVE_XRENDER_COMPOSITING )
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if (!hasGlx())
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return i18n("GLX/OpenGL are not available and only OpenGL support is compiled.");
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#else
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if (!(hasGlx()
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|| (Xcb::Extensions::self()->isRenderAvailable() && Xcb::Extensions::self()->isFixesAvailable()))) {
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return i18n("GLX/OpenGL and XRender/XFixes are not available.");
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}
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#endif
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return QString();
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}
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bool CompositingPrefs::hasGlx()
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{
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return Xcb::Extensions::self()->hasGlx();
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}
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} // namespace
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