1332 lines
42 KiB
C++
1332 lines
42 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) 2006 Lubos Lunak <l.lunak@kde.org>
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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 "composite.h"
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#include "dbusinterface.h"
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#include "utils.h"
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#include <QTextStream>
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#include "workspace.h"
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#include "client.h"
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#include "unmanaged.h"
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#include "deleted.h"
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#include "effects.h"
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#include "overlaywindow.h"
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#include "scene.h"
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#include "scene_xrender.h"
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#include "scene_opengl.h"
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#include "scene_qpainter.h"
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#include "screens.h"
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#include "shadow.h"
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#include "useractions.h"
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#include "compositingprefs.h"
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#include "xcbutils.h"
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#include "abstract_backend.h"
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#include "shell_client.h"
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#include "wayland_server.h"
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#include "decorations/decoratedclient.h"
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#include <KWayland/Server/surface_interface.h>
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#include <stdio.h>
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#include <QtConcurrentRun>
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#include <QFutureWatcher>
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#include <QMenu>
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#include <QTimerEvent>
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#include <QDateTime>
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#include <QOpenGLContext>
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#include <KGlobalAccel>
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#include <KLocalizedString>
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#include <KNotification>
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#include <KSelectionWatcher>
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#include <xcb/composite.h>
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#include <xcb/damage.h>
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Q_DECLARE_METATYPE(KWin::Compositor::SuspendReason)
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namespace KWin
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{
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extern int currentRefreshRate();
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CompositorSelectionOwner::CompositorSelectionOwner(const char *selection) : KSelectionOwner(selection, connection(), rootWindow()), owning(false)
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{
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connect (this, SIGNAL(lostOwnership()), SLOT(looseOwnership()));
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}
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void CompositorSelectionOwner::looseOwnership()
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{
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owning = false;
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}
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KWIN_SINGLETON_FACTORY_VARIABLE(Compositor, s_compositor)
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static inline qint64 milliToNano(int milli) { return qint64(milli) * 1000 * 1000; }
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static inline qint64 nanoToMilli(int nano) { return nano / (1000*1000); }
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Compositor::Compositor(QObject* workspace)
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: QObject(workspace)
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, m_suspended(options->isUseCompositing() ? NoReasonSuspend : UserSuspend)
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, cm_selection(NULL)
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, vBlankInterval(0)
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, fpsInterval(0)
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, m_xrrRefreshRate(0)
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, forceUnredirectCheck(false)
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, m_finishing(false)
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, m_timeSinceLastVBlank(0)
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, m_scene(NULL)
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, m_bufferSwapPending(false)
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, m_composeAtSwapCompletion(false)
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{
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qRegisterMetaType<Compositor::SuspendReason>("Compositor::SuspendReason");
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connect(&unredirectTimer, SIGNAL(timeout()), SLOT(delayedCheckUnredirect()));
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connect(&compositeResetTimer, SIGNAL(timeout()), SLOT(restart()));
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connect(options, &Options::configChanged, this, &Compositor::slotConfigChanged);
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connect(options, SIGNAL(unredirectFullscreenChanged()), SLOT(delayedCheckUnredirect()));
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unredirectTimer.setSingleShot(true);
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compositeResetTimer.setSingleShot(true);
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nextPaintReference.invalidate(); // Initialize the timer
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// 2 sec which should be enough to restart the compositor
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static const int compositorLostMessageDelay = 2000;
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m_releaseSelectionTimer.setSingleShot(true);
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m_releaseSelectionTimer.setInterval(compositorLostMessageDelay);
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connect(&m_releaseSelectionTimer, SIGNAL(timeout()), SLOT(releaseCompositorSelection()));
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m_unusedSupportPropertyTimer.setInterval(compositorLostMessageDelay);
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m_unusedSupportPropertyTimer.setSingleShot(true);
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connect(&m_unusedSupportPropertyTimer, SIGNAL(timeout()), SLOT(deleteUnusedSupportProperties()));
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if (kwinApp()->operationMode() != Application::OperationModeX11) {
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if (waylandServer()->backend()->isReady()) {
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QMetaObject::invokeMethod(this, "setup", Qt::QueuedConnection);
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}
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connect(waylandServer()->backend(), &AbstractBackend::readyChanged, this,
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[this] (bool ready) {
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if (ready) {
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setup();
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} else {
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finish();
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}
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}, Qt::QueuedConnection
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);
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connect(kwinApp(), &Application::x11ConnectionAboutToBeDestroyed, this,
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[this] {
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delete cm_selection;
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cm_selection = nullptr;
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}
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);
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} else {
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// delay the call to setup by one event cycle
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// The ctor of this class is invoked from the Workspace ctor, that means before
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// Workspace is completely constructed, so calling Workspace::self() would result
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// in undefined behavior. This is fixed by using a delayed invocation.
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QMetaObject::invokeMethod(this, "setup", Qt::QueuedConnection);
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}
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// register DBus
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new CompositorDBusInterface(this);
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}
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Compositor::~Compositor()
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{
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emit aboutToDestroy();
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finish();
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deleteUnusedSupportProperties();
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delete cm_selection;
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s_compositor = NULL;
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}
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void Compositor::setup()
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{
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if (hasScene())
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return;
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if (m_suspended) {
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QStringList reasons;
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if (m_suspended & UserSuspend) {
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reasons << QStringLiteral("Disabled by User");
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}
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if (m_suspended & BlockRuleSuspend) {
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reasons << QStringLiteral("Disabled by Window");
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}
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if (m_suspended & ScriptSuspend) {
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reasons << QStringLiteral("Disabled by Script");
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}
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qCDebug(KWIN_CORE) << "Compositing is suspended, reason:" << reasons;
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return;
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} else if (!CompositingPrefs::compositingPossible()) {
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qCCritical(KWIN_CORE) << "Compositing is not possible";
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return;
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}
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m_starting = true;
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if (!options->isCompositingInitialized()) {
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options->reloadCompositingSettings(true);
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slotCompositingOptionsInitialized();
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} else {
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slotCompositingOptionsInitialized();
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}
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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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void Compositor::slotCompositingOptionsInitialized()
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{
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claimCompositorSelection();
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// There might still be a deleted around, needs to be cleared before creating the scene (BUG 333275)
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if (Workspace::self()) {
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while (!Workspace::self()->deletedList().isEmpty()) {
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Workspace::self()->deletedList().first()->discard();
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}
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}
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switch(options->compositingMode()) {
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case OpenGLCompositing: {
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qCDebug(KWIN_CORE) << "Initializing OpenGL compositing";
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// Some broken drivers crash on glXQuery() so to prevent constant KWin crashes:
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KSharedConfigPtr unsafeConfigPtr = kwinApp()->config();
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KConfigGroup unsafeConfig(unsafeConfigPtr, "Compositing");
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const QString openGLIsUnsafe = QLatin1String("OpenGLIsUnsafe") + (is_multihead ? QString::number(screen_number) : QString());
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if (unsafeConfig.readEntry(openGLIsUnsafe, false))
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qCWarning(KWIN_CORE) << "KWin has detected that your OpenGL library is unsafe to use";
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else {
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unsafeConfig.writeEntry(openGLIsUnsafe, true);
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unsafeConfig.sync();
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if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGL && !kwinApp()->shouldUseWaylandForCompositing() && !CompositingPrefs::hasGlx()) {
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unsafeConfig.writeEntry(openGLIsUnsafe, false);
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unsafeConfig.sync();
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qCDebug(KWIN_CORE) << "No glx extensions available";
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break;
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}
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m_scene = SceneOpenGL::createScene(this);
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// TODO: Add 30 second delay to protect against screen freezes as well
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unsafeConfig.writeEntry(openGLIsUnsafe, false);
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unsafeConfig.sync();
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if (m_scene && !m_scene->initFailed()) {
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connect(static_cast<SceneOpenGL*>(m_scene), &SceneOpenGL::resetCompositing, this, &Compositor::restart);
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break; // -->
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}
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delete m_scene;
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m_scene = NULL;
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}
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// Do not Fall back to XRender - it causes problems when selfcheck fails during startup, but works later on
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break;
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}
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#ifdef KWIN_HAVE_XRENDER_COMPOSITING
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case XRenderCompositing:
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qCDebug(KWIN_CORE) << "Initializing XRender compositing";
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m_scene = SceneXrender::createScene(this);
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break;
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#endif
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case QPainterCompositing:
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qCDebug(KWIN_CORE) << "Initializing QPainter compositing";
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m_scene = SceneQPainter::createScene(this);
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break;
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default:
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qCDebug(KWIN_CORE) << "No compositing enabled";
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m_starting = false;
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if (cm_selection) {
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cm_selection->owning = false;
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cm_selection->release();
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}
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if (kwinApp()->requiresCompositing()) {
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qCCritical(KWIN_CORE) << "The used windowing system requires compositing";
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qCCritical(KWIN_CORE) << "We are going to quit KWin now as it is broken";
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qApp->quit();
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}
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return;
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}
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if (m_scene == NULL || m_scene->initFailed()) {
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qCCritical(KWIN_CORE) << "Failed to initialize compositing, compositing disabled";
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delete m_scene;
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m_scene = NULL;
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m_starting = false;
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if (cm_selection) {
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cm_selection->owning = false;
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cm_selection->release();
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}
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if (kwinApp()->requiresCompositing()) {
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qCCritical(KWIN_CORE) << "The used windowing system requires compositing";
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qCCritical(KWIN_CORE) << "We are going to quit KWin now as it is broken";
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qApp->quit();
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}
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return;
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}
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if (Workspace::self()) {
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startupWithWorkspace();
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} else {
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connect(kwinApp(), &Application::workspaceCreated, this, &Compositor::startupWithWorkspace);
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}
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}
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void Compositor::claimCompositorSelection()
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{
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if (!cm_selection && kwinApp()->x11Connection()) {
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char selection_name[ 100 ];
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sprintf(selection_name, "_NET_WM_CM_S%d", Application::x11ScreenNumber());
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cm_selection = new CompositorSelectionOwner(selection_name);
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connect(cm_selection, SIGNAL(lostOwnership()), SLOT(finish()));
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}
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if (!cm_selection) // no X11 yet
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return;
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if (!cm_selection->owning) {
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cm_selection->claim(true); // force claiming
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cm_selection->owning = true;
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}
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}
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void Compositor::startupWithWorkspace()
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{
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if (!m_starting) {
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return;
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}
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Q_ASSERT(m_scene);
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claimCompositorSelection();
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m_xrrRefreshRate = KWin::currentRefreshRate();
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fpsInterval = options->maxFpsInterval();
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if (m_scene->syncsToVBlank()) { // if we do vsync, set the fps to the next multiple of the vblank rate
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vBlankInterval = milliToNano(1000) / m_xrrRefreshRate;
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fpsInterval = qMax((fpsInterval / vBlankInterval) * vBlankInterval, vBlankInterval);
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} else
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vBlankInterval = milliToNano(1); // no sync - DO NOT set "0", would cause div-by-zero segfaults.
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m_timeSinceLastVBlank = fpsInterval - (options->vBlankTime() + 1); // means "start now" - we don't have even a slight idea when the first vsync will occur
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scheduleRepaint();
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xcb_composite_redirect_subwindows(connection(), rootWindow(), XCB_COMPOSITE_REDIRECT_MANUAL);
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new EffectsHandlerImpl(this, m_scene); // sets also the 'effects' pointer
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connect(Workspace::self(), &Workspace::deletedRemoved, m_scene, &Scene::windowDeleted);
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connect(effects, SIGNAL(screenGeometryChanged(QSize)), SLOT(addRepaintFull()));
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addRepaintFull();
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foreach (Client * c, Workspace::self()->clientList()) {
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c->setupCompositing();
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c->getShadow();
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}
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foreach (Client * c, Workspace::self()->desktopList())
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c->setupCompositing();
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foreach (Unmanaged * c, Workspace::self()->unmanagedList()) {
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c->setupCompositing();
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c->getShadow();
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}
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emit compositingToggled(true);
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m_starting = false;
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if (m_releaseSelectionTimer.isActive()) {
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m_releaseSelectionTimer.stop();
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}
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// render at least once
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performCompositing();
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}
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void Compositor::scheduleRepaint()
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{
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if (!compositeTimer.isActive())
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setCompositeTimer();
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}
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void Compositor::finish()
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{
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if (!hasScene())
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return;
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m_finishing = true;
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m_releaseSelectionTimer.start();
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if (Workspace::self()) {
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foreach (Client * c, Workspace::self()->clientList())
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m_scene->windowClosed(c, NULL);
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foreach (Client * c, Workspace::self()->desktopList())
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m_scene->windowClosed(c, NULL);
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foreach (Unmanaged * c, Workspace::self()->unmanagedList())
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m_scene->windowClosed(c, NULL);
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foreach (Deleted * c, Workspace::self()->deletedList())
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m_scene->windowDeleted(c);
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foreach (Client * c, Workspace::self()->clientList())
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c->finishCompositing();
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foreach (Client * c, Workspace::self()->desktopList())
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c->finishCompositing();
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foreach (Unmanaged * c, Workspace::self()->unmanagedList())
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c->finishCompositing();
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foreach (Deleted * c, Workspace::self()->deletedList())
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c->finishCompositing();
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xcb_composite_unredirect_subwindows(connection(), rootWindow(), XCB_COMPOSITE_REDIRECT_MANUAL);
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}
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delete effects;
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effects = NULL;
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delete m_scene;
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m_scene = NULL;
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compositeTimer.stop();
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repaints_region = QRegion();
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if (Workspace::self()) {
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for (ClientList::ConstIterator it = Workspace::self()->clientList().constBegin();
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it != Workspace::self()->clientList().constEnd();
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++it) {
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// forward all opacity values to the frame in case there'll be other CM running
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if ((*it)->opacity() != 1.0) {
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NETWinInfo i(connection(), (*it)->frameId(), rootWindow(), 0, 0);
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i.setOpacity(static_cast< unsigned long >((*it)->opacity() * 0xffffffff));
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}
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}
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// discard all Deleted windows (#152914)
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while (!Workspace::self()->deletedList().isEmpty())
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Workspace::self()->deletedList().first()->discard();
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}
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m_finishing = false;
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emit compositingToggled(false);
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}
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void Compositor::releaseCompositorSelection()
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{
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if (hasScene() && !m_finishing) {
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// compositor is up and running again, no need to release the selection
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return;
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}
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if (m_starting) {
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// currently still starting the compositor, it might fail, so restart the timer to test again
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m_releaseSelectionTimer.start();
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return;
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}
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if (m_finishing) {
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// still shutting down, a restart might follow, so restart the timer to test again
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m_releaseSelectionTimer.start();
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return;
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}
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qCDebug(KWIN_CORE) << "Releasing compositor selection";
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if (cm_selection) {
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cm_selection->owning = false;
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cm_selection->release();
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}
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}
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void Compositor::keepSupportProperty(xcb_atom_t atom)
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{
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m_unusedSupportProperties.removeAll(atom);
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}
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void Compositor::removeSupportProperty(xcb_atom_t atom)
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{
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m_unusedSupportProperties << atom;
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m_unusedSupportPropertyTimer.start();
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}
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void Compositor::deleteUnusedSupportProperties()
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{
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if (m_starting) {
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// currently still starting the compositor
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m_unusedSupportPropertyTimer.start();
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return;
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}
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if (m_finishing) {
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// still shutting down, a restart might follow
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m_unusedSupportPropertyTimer.start();
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return;
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}
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if (kwinApp()->x11Connection()) {
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foreach (const xcb_atom_t &atom, m_unusedSupportProperties) {
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// remove property from root window
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xcb_delete_property(connection(), rootWindow(), atom);
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}
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}
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}
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// OpenGL self-check failed, fallback to XRender
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void Compositor::fallbackToXRenderCompositing()
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{
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finish();
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KConfigGroup config(kwinApp()->config(), "Compositing");
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config.writeEntry("Backend", "XRender");
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config.sync();
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options->setCompositingMode(XRenderCompositing);
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setup();
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}
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void Compositor::slotConfigChanged()
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{
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if (!m_suspended) {
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setup();
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if (effects) // setupCompositing() may fail
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effects->reconfigure();
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addRepaintFull();
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} else
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finish();
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}
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void Compositor::slotReinitialize()
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{
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// Reparse config. Config options will be reloaded by setup()
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kwinApp()->config()->reparseConfiguration();
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// Restart compositing
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finish();
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// resume compositing if suspended
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m_suspended = NoReasonSuspend;
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options->setCompositingInitialized(false);
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setup();
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if (effects) { // setup() may fail
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effects->reconfigure();
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}
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}
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// for the shortcut
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void Compositor::slotToggleCompositing()
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{
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if (kwinApp()->requiresCompositing()) {
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// we are not allowed to turn on/off compositing
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return;
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}
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if (m_suspended) { // direct user call; clear all bits
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resume(AllReasonSuspend);
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} else { // but only set the user one (sufficient to suspend)
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|
suspend(UserSuspend);
|
|
}
|
|
}
|
|
|
|
void Compositor::updateCompositeBlocking()
|
|
{
|
|
updateCompositeBlocking(NULL);
|
|
}
|
|
|
|
void Compositor::updateCompositeBlocking(Client *c)
|
|
{
|
|
if (kwinApp()->requiresCompositing()) {
|
|
return;
|
|
}
|
|
if (c) { // if c == 0 we just check if we can resume
|
|
if (c->isBlockingCompositing()) {
|
|
if (!(m_suspended & BlockRuleSuspend)) // do NOT attempt to call suspend(true); from within the eventchain!
|
|
QMetaObject::invokeMethod(this, "suspend", Qt::QueuedConnection, Q_ARG(Compositor::SuspendReason, BlockRuleSuspend));
|
|
}
|
|
}
|
|
else if (m_suspended & BlockRuleSuspend) { // lost a client and we're blocked - can we resume?
|
|
bool resume = true;
|
|
for (ClientList::ConstIterator it = Workspace::self()->clientList().constBegin(); it != Workspace::self()->clientList().constEnd(); ++it) {
|
|
if ((*it)->isBlockingCompositing()) {
|
|
resume = false;
|
|
break;
|
|
}
|
|
}
|
|
if (resume) { // do NOT attempt to call suspend(false); from within the eventchain!
|
|
QMetaObject::invokeMethod(this, "resume", Qt::QueuedConnection, Q_ARG(Compositor::SuspendReason, BlockRuleSuspend));
|
|
}
|
|
}
|
|
}
|
|
|
|
void Compositor::suspend(Compositor::SuspendReason reason)
|
|
{
|
|
if (kwinApp()->requiresCompositing()) {
|
|
return;
|
|
}
|
|
Q_ASSERT(reason != NoReasonSuspend);
|
|
m_suspended |= reason;
|
|
if (reason & KWin::Compositor::ScriptSuspend) {
|
|
// when disabled show a shortcut how the user can get back compositing
|
|
const auto shortcuts = KGlobalAccel::self()->shortcut(workspace()->findChild<QAction*>(QStringLiteral("Suspend Compositing")));
|
|
if (!shortcuts.isEmpty()) {
|
|
// display notification only if there is the shortcut
|
|
const QString message = i18n("Desktop effects have been suspended by another application.<br/>"
|
|
"You can resume using the '%1' shortcut.", shortcuts.first().toString(QKeySequence::NativeText));
|
|
KNotification::event(QStringLiteral("compositingsuspendeddbus"), message);
|
|
}
|
|
}
|
|
finish();
|
|
}
|
|
|
|
void Compositor::resume(Compositor::SuspendReason reason)
|
|
{
|
|
Q_ASSERT(reason != NoReasonSuspend);
|
|
m_suspended &= ~reason;
|
|
setup(); // signal "toggled" is eventually emitted from within setup
|
|
}
|
|
|
|
void Compositor::restart()
|
|
{
|
|
if (hasScene()) {
|
|
finish();
|
|
QTimer::singleShot(0, this, SLOT(setup()));
|
|
}
|
|
}
|
|
|
|
void Compositor::addRepaint(int x, int y, int w, int h)
|
|
{
|
|
if (!hasScene())
|
|
return;
|
|
repaints_region += QRegion(x, y, w, h);
|
|
scheduleRepaint();
|
|
}
|
|
|
|
void Compositor::addRepaint(const QRect& r)
|
|
{
|
|
if (!hasScene())
|
|
return;
|
|
repaints_region += r;
|
|
scheduleRepaint();
|
|
}
|
|
|
|
void Compositor::addRepaint(const QRegion& r)
|
|
{
|
|
if (!hasScene())
|
|
return;
|
|
repaints_region += r;
|
|
scheduleRepaint();
|
|
}
|
|
|
|
void Compositor::addRepaintFull()
|
|
{
|
|
if (!hasScene())
|
|
return;
|
|
const QSize &s = screens()->size();
|
|
repaints_region = QRegion(0, 0, s.width(), s.height());
|
|
scheduleRepaint();
|
|
}
|
|
|
|
void Compositor::timerEvent(QTimerEvent *te)
|
|
{
|
|
if (te->timerId() == compositeTimer.timerId()) {
|
|
performCompositing();
|
|
} else
|
|
QObject::timerEvent(te);
|
|
}
|
|
|
|
void Compositor::aboutToSwapBuffers()
|
|
{
|
|
assert(!m_bufferSwapPending);
|
|
|
|
m_bufferSwapPending = true;
|
|
}
|
|
|
|
void Compositor::bufferSwapComplete()
|
|
{
|
|
assert(m_bufferSwapPending);
|
|
m_bufferSwapPending = false;
|
|
|
|
if (m_composeAtSwapCompletion) {
|
|
m_composeAtSwapCompletion = false;
|
|
performCompositing();
|
|
}
|
|
}
|
|
|
|
void Compositor::performCompositing()
|
|
{
|
|
if (m_scene->usesOverlayWindow() && !isOverlayWindowVisible())
|
|
return; // nothing is visible anyway
|
|
|
|
// If a buffer swap is still pending, we return to the event loop and
|
|
// continue processing events until the swap has completed.
|
|
if (m_bufferSwapPending) {
|
|
m_composeAtSwapCompletion = true;
|
|
compositeTimer.stop();
|
|
return;
|
|
}
|
|
|
|
// If outputs are disabled, we return to the event loop and
|
|
// continue processing events until the outputs are enabled again
|
|
if (waylandServer() && !waylandServer()->backend()->areOutputsEnabled()) {
|
|
compositeTimer.stop();
|
|
return;
|
|
}
|
|
|
|
// Create a list of all windows in the stacking order
|
|
ToplevelList windows = Workspace::self()->xStackingOrder();
|
|
ToplevelList damaged;
|
|
|
|
// Reset the damage state of each window and fetch the damage region
|
|
// without waiting for a reply
|
|
foreach (Toplevel *win, windows) {
|
|
if (win->resetAndFetchDamage())
|
|
damaged << win;
|
|
}
|
|
|
|
if (damaged.count() > 0) {
|
|
m_scene->triggerFence();
|
|
xcb_flush(connection());
|
|
}
|
|
|
|
// Move elevated windows to the top of the stacking order
|
|
foreach (EffectWindow *c, static_cast<EffectsHandlerImpl *>(effects)->elevatedWindows()) {
|
|
Toplevel* t = static_cast< EffectWindowImpl* >(c)->window();
|
|
windows.removeAll(t);
|
|
windows.append(t);
|
|
}
|
|
|
|
// Get the replies
|
|
foreach (Toplevel *win, damaged) {
|
|
// Discard the cached lanczos texture
|
|
if (win->effectWindow()) {
|
|
const QVariant texture = win->effectWindow()->data(LanczosCacheRole);
|
|
if (texture.isValid()) {
|
|
delete static_cast<GLTexture *>(texture.value<void*>());
|
|
win->effectWindow()->setData(LanczosCacheRole, QVariant());
|
|
}
|
|
}
|
|
|
|
win->getDamageRegionReply();
|
|
}
|
|
|
|
if (repaints_region.isEmpty() && !windowRepaintsPending()) {
|
|
m_scene->idle();
|
|
m_timeSinceLastVBlank = fpsInterval - (options->vBlankTime() + 1); // means "start now"
|
|
m_timeSinceStart += m_timeSinceLastVBlank;
|
|
// Note: It would seem here we should undo suspended unredirect, but when scenes need
|
|
// it for some reason, e.g. transformations or translucency, the next pass that does not
|
|
// need this anymore and paints normally will also reset the suspended unredirect.
|
|
// Otherwise the window would not be painted normally anyway.
|
|
compositeTimer.stop();
|
|
return;
|
|
}
|
|
|
|
// skip windows that are not yet ready for being painted and if screen is locked skip windows that are
|
|
// neither lockscreen nor inputmethod windows
|
|
// TODO ?
|
|
// this cannot be used so carelessly - needs protections against broken clients, the window
|
|
// should not get focus before it's displayed, handle unredirected windows properly and so on.
|
|
foreach (Toplevel *t, windows) {
|
|
if (!t->readyForPainting()) {
|
|
windows.removeAll(t);
|
|
}
|
|
if (waylandServer() && waylandServer()->isScreenLocked()) {
|
|
if(!t->isLockScreen() && !t->isInputMethod()) {
|
|
windows.removeAll(t);
|
|
}
|
|
}
|
|
}
|
|
|
|
QRegion repaints = repaints_region;
|
|
// clear all repaints, so that post-pass can add repaints for the next repaint
|
|
repaints_region = QRegion();
|
|
|
|
m_timeSinceLastVBlank = m_scene->paint(repaints, windows);
|
|
m_timeSinceStart += m_timeSinceLastVBlank;
|
|
|
|
if (kwinApp()->shouldUseWaylandForCompositing()) {
|
|
for (Toplevel *win : damaged) {
|
|
if (auto surface = win->surface()) {
|
|
surface->frameRendered(m_timeSinceStart);
|
|
}
|
|
}
|
|
}
|
|
|
|
compositeTimer.stop(); // stop here to ensure *we* cause the next repaint schedule - not some effect through m_scene->paint()
|
|
|
|
// Trigger at least one more pass even if there would be nothing to paint, so that scene->idle()
|
|
// is called the next time. If there would be nothing pending, it will not restart the timer and
|
|
// scheduleRepaint() would restart it again somewhen later, called from functions that
|
|
// would again add something pending.
|
|
if (m_bufferSwapPending && m_scene->syncsToVBlank()) {
|
|
m_composeAtSwapCompletion = true;
|
|
} else {
|
|
scheduleRepaint();
|
|
}
|
|
}
|
|
|
|
bool Compositor::windowRepaintsPending() const
|
|
{
|
|
foreach (Toplevel * c, Workspace::self()->clientList())
|
|
if (!c->repaints().isEmpty())
|
|
return true;
|
|
foreach (Toplevel * c, Workspace::self()->desktopList())
|
|
if (!c->repaints().isEmpty())
|
|
return true;
|
|
foreach (Toplevel * c, Workspace::self()->unmanagedList())
|
|
if (!c->repaints().isEmpty())
|
|
return true;
|
|
foreach (Toplevel * c, Workspace::self()->deletedList())
|
|
if (!c->repaints().isEmpty())
|
|
return true;
|
|
if (auto w = waylandServer()) {
|
|
const auto &clients = w->clients();
|
|
for (auto c : clients) {
|
|
if (c->isShown(true) && !c->repaints().isEmpty()) {
|
|
return true;
|
|
}
|
|
}
|
|
const auto &internalClients = w->internalClients();
|
|
for (auto c : internalClients) {
|
|
if (c->isShown(true) && !c->repaints().isEmpty()) {
|
|
return true;
|
|
}
|
|
}
|
|
}
|
|
return false;
|
|
}
|
|
|
|
void Compositor::setCompositeResetTimer(int msecs)
|
|
{
|
|
compositeResetTimer.start(msecs);
|
|
}
|
|
|
|
void Compositor::setCompositeTimer()
|
|
{
|
|
if (!hasScene()) // should not really happen, but there may be e.g. some damage events still pending
|
|
return;
|
|
if (m_starting || !Workspace::self()) {
|
|
return;
|
|
}
|
|
|
|
// Don't start the timer if we're waiting for a swap event
|
|
if (m_bufferSwapPending && m_composeAtSwapCompletion)
|
|
return;
|
|
|
|
// Don't start the timer if all outputs are disabled
|
|
if (waylandServer() && !waylandServer()->backend()->areOutputsEnabled()) {
|
|
return;
|
|
}
|
|
|
|
uint waitTime = 1;
|
|
|
|
if (m_scene->blocksForRetrace()) {
|
|
|
|
// TODO: make vBlankTime dynamic?!
|
|
// It's required because glXWaitVideoSync will *likely* block a full frame if one enters
|
|
// a retrace pass which can last a variable amount of time, depending on the actual screen
|
|
// Now, my ooold 19" CRT can do such retrace so that 2ms are entirely sufficient,
|
|
// while another ooold 15" TFT requires about 6ms
|
|
|
|
qint64 padding = m_timeSinceLastVBlank;
|
|
if (padding > fpsInterval) {
|
|
// we're at low repaints or spent more time in painting than the user wanted to wait for that frame
|
|
padding = vBlankInterval - (padding%vBlankInterval); // -> align to next vblank
|
|
} else { // -> align to the next maxFps tick
|
|
padding = ((vBlankInterval - padding%vBlankInterval) + (fpsInterval/vBlankInterval-1)*vBlankInterval);
|
|
// "remaining time of the first vsync" + "time for the other vsyncs of the frame"
|
|
}
|
|
|
|
if (padding < options->vBlankTime()) { // we'll likely miss this frame
|
|
waitTime = nanoToMilli(padding + vBlankInterval - options->vBlankTime()); // so we add one
|
|
} else {
|
|
waitTime = nanoToMilli(padding - options->vBlankTime());
|
|
}
|
|
}
|
|
else { // w/o blocking vsync we just jump to the next demanded tick
|
|
if (fpsInterval > m_timeSinceLastVBlank) {
|
|
waitTime = nanoToMilli(fpsInterval - m_timeSinceLastVBlank);
|
|
if (!waitTime) {
|
|
waitTime = 1; // will ensure we don't block out the eventloop - the system's just not faster ...
|
|
}
|
|
}/* else if (m_scene->syncsToVBlank() && m_timeSinceLastVBlank - fpsInterval < (vBlankInterval<<1)) {
|
|
// NOTICE - "for later" ------------------------------------------------------------------
|
|
// It can happen that we push two frames within one refresh cycle.
|
|
// Swapping will then block even with triple buffering when the GPU does not discard but
|
|
// queues frames
|
|
// now here's the mean part: if we take that as "OMG, we're late - next frame ASAP",
|
|
// there'll immediately be 2 frames in the pipe, swapping will block, we think we're
|
|
// late ... ewww
|
|
// so instead we pad to the clock again and add 2ms safety to ensure the pipe is really
|
|
// free
|
|
// NOTICE: obviously m_timeSinceLastVBlank can be too big because we're too slow as well
|
|
// So if this code was enabled, we'd needlessly half the framerate once more (15 instead of 30)
|
|
waitTime = nanoToMilli(vBlankInterval - (m_timeSinceLastVBlank - fpsInterval)%vBlankInterval) + 2;
|
|
}*/ else {
|
|
waitTime = 1; // ... "0" would be sufficient, but the compositor isn't the WMs only task
|
|
}
|
|
}
|
|
compositeTimer.start(qMin(waitTime, 250u), this); // force 4fps minimum
|
|
}
|
|
|
|
bool Compositor::isActive()
|
|
{
|
|
return !m_finishing && hasScene();
|
|
}
|
|
|
|
void Compositor::checkUnredirect()
|
|
{
|
|
checkUnredirect(false);
|
|
}
|
|
|
|
// force is needed when the list of windows changes (e.g. a window goes away)
|
|
void Compositor::checkUnredirect(bool force)
|
|
{
|
|
if (!hasScene() || !m_scene->overlayWindow() || m_scene->overlayWindow()->window() == None || !options->isUnredirectFullscreen())
|
|
return;
|
|
if (force)
|
|
forceUnredirectCheck = true;
|
|
if (!unredirectTimer.isActive())
|
|
unredirectTimer.start(0);
|
|
}
|
|
|
|
void Compositor::delayedCheckUnredirect()
|
|
{
|
|
if (!hasScene() || !m_scene->overlayWindow() || m_scene->overlayWindow()->window() == None || !(options->isUnredirectFullscreen() || sender() == options))
|
|
return;
|
|
ToplevelList list;
|
|
bool changed = forceUnredirectCheck;
|
|
foreach (Client * c, Workspace::self()->clientList())
|
|
list.append(c);
|
|
foreach (Unmanaged * c, Workspace::self()->unmanagedList())
|
|
list.append(c);
|
|
foreach (Toplevel * c, list) {
|
|
if (c->updateUnredirectedState()) {
|
|
changed = true;
|
|
break;
|
|
}
|
|
}
|
|
// no desktops, no Deleted ones
|
|
if (!changed)
|
|
return;
|
|
forceUnredirectCheck = false;
|
|
// Cut out parts from the overlay window where unredirected windows are,
|
|
// so that they are actually visible.
|
|
const QSize &s = screens()->size();
|
|
QRegion reg(0, 0, s.width(), s.height());
|
|
foreach (Toplevel * c, list) {
|
|
if (c->unredirected())
|
|
reg -= c->geometry();
|
|
}
|
|
m_scene->overlayWindow()->setShape(reg);
|
|
addRepaint(reg);
|
|
}
|
|
|
|
bool Compositor::checkForOverlayWindow(WId w) const
|
|
{
|
|
if (!hasScene()) {
|
|
// no scene, so it cannot be the overlay window
|
|
return false;
|
|
}
|
|
if (!m_scene->overlayWindow()) {
|
|
// no overlay window, it cannot be the overlay
|
|
return false;
|
|
}
|
|
// and compare the window ID's
|
|
return w == m_scene->overlayWindow()->window();
|
|
}
|
|
|
|
WId Compositor::overlayWindow() const
|
|
{
|
|
if (!hasScene()) {
|
|
return None;
|
|
}
|
|
if (!m_scene->overlayWindow()) {
|
|
return None;
|
|
}
|
|
return m_scene->overlayWindow()->window();
|
|
}
|
|
|
|
bool Compositor::isOverlayWindowVisible() const
|
|
{
|
|
if (!hasScene()) {
|
|
return false;
|
|
}
|
|
if (!m_scene->overlayWindow()) {
|
|
return false;
|
|
}
|
|
return m_scene->overlayWindow()->isVisible();
|
|
}
|
|
|
|
void Compositor::setOverlayWindowVisibility(bool visible)
|
|
{
|
|
if (hasScene() && m_scene->overlayWindow()) {
|
|
m_scene->overlayWindow()->setVisibility(visible);
|
|
}
|
|
}
|
|
|
|
/*****************************************************
|
|
* Workspace
|
|
****************************************************/
|
|
|
|
bool Workspace::compositing() const
|
|
{
|
|
return m_compositor && m_compositor->hasScene();
|
|
}
|
|
|
|
//****************************************
|
|
// Toplevel
|
|
//****************************************
|
|
|
|
bool Toplevel::setupCompositing()
|
|
{
|
|
if (!compositing())
|
|
return false;
|
|
|
|
if (damage_handle != XCB_NONE)
|
|
return false;
|
|
|
|
if (kwinApp()->operationMode() == Application::OperationModeX11) {
|
|
damage_handle = xcb_generate_id(connection());
|
|
xcb_damage_create(connection(), damage_handle, frameId(), XCB_DAMAGE_REPORT_LEVEL_NON_EMPTY);
|
|
}
|
|
|
|
damage_region = QRegion(0, 0, width(), height());
|
|
effect_window = new EffectWindowImpl(this);
|
|
unredirect = false;
|
|
|
|
Compositor::self()->checkUnredirect(true);
|
|
Compositor::self()->scene()->windowAdded(this);
|
|
|
|
// With unmanaged windows there is a race condition between the client painting the window
|
|
// and us setting up damage tracking. If the client wins we won't get a damage event even
|
|
// though the window has been painted. To avoid this we mark the whole window as damaged
|
|
// and schedule a repaint immediately after creating the damage object.
|
|
if (dynamic_cast<Unmanaged*>(this))
|
|
addDamageFull();
|
|
|
|
return true;
|
|
}
|
|
|
|
void Toplevel::finishCompositing(ReleaseReason releaseReason)
|
|
{
|
|
if (kwinApp()->operationMode() == Application::OperationModeX11 && damage_handle == XCB_NONE)
|
|
return;
|
|
Compositor::self()->checkUnredirect(true);
|
|
if (effect_window->window() == this) { // otherwise it's already passed to Deleted, don't free data
|
|
discardWindowPixmap();
|
|
delete effect_window;
|
|
}
|
|
|
|
if (kwinApp()->operationMode() == Application::OperationModeX11 &&
|
|
releaseReason != ReleaseReason::Destroyed) {
|
|
xcb_damage_destroy(connection(), damage_handle);
|
|
}
|
|
|
|
damage_handle = XCB_NONE;
|
|
damage_region = QRegion();
|
|
repaints_region = QRegion();
|
|
effect_window = NULL;
|
|
}
|
|
|
|
void Toplevel::discardWindowPixmap()
|
|
{
|
|
addDamageFull();
|
|
if (effectWindow() != NULL && effectWindow()->sceneWindow() != NULL)
|
|
effectWindow()->sceneWindow()->pixmapDiscarded();
|
|
}
|
|
|
|
void Toplevel::damageNotifyEvent()
|
|
{
|
|
m_isDamaged = true;
|
|
|
|
// Note: The rect is supposed to specify the damage extents,
|
|
// but we don't know it at this point. No one who connects
|
|
// to this signal uses the rect however.
|
|
emit damaged(this, QRect());
|
|
}
|
|
|
|
bool Toplevel::compositing() const
|
|
{
|
|
return Workspace::self()->compositing();
|
|
}
|
|
|
|
void Client::damageNotifyEvent()
|
|
{
|
|
if (syncRequest.isPending && isResize()) {
|
|
emit damaged(this, QRect());
|
|
m_isDamaged = true;
|
|
return;
|
|
}
|
|
|
|
if (!ready_for_painting) { // avoid "setReadyForPainting()" function calling overhead
|
|
if (syncRequest.counter == XCB_NONE) { // cannot detect complete redraw, consider done now
|
|
setReadyForPainting();
|
|
setupWindowManagementInterface();
|
|
}
|
|
}
|
|
|
|
Toplevel::damageNotifyEvent();
|
|
}
|
|
|
|
bool Toplevel::resetAndFetchDamage()
|
|
{
|
|
if (!m_isDamaged)
|
|
return false;
|
|
|
|
if (kwinApp()->operationMode() != Application::OperationModeX11) {
|
|
m_isDamaged = false;
|
|
return true;
|
|
}
|
|
|
|
xcb_connection_t *conn = connection();
|
|
|
|
// Create a new region and copy the damage region to it,
|
|
// resetting the damaged state.
|
|
xcb_xfixes_region_t region = xcb_generate_id(conn);
|
|
xcb_xfixes_create_region(conn, region, 0, 0);
|
|
xcb_damage_subtract(conn, damage_handle, 0, region);
|
|
|
|
// Send a fetch-region request and destroy the region
|
|
m_regionCookie = xcb_xfixes_fetch_region_unchecked(conn, region);
|
|
xcb_xfixes_destroy_region(conn, region);
|
|
|
|
m_isDamaged = false;
|
|
m_damageReplyPending = true;
|
|
|
|
return m_damageReplyPending;
|
|
}
|
|
|
|
void Toplevel::getDamageRegionReply()
|
|
{
|
|
if (!m_damageReplyPending)
|
|
return;
|
|
|
|
m_damageReplyPending = false;
|
|
|
|
// Get the fetch-region reply
|
|
xcb_xfixes_fetch_region_reply_t *reply =
|
|
xcb_xfixes_fetch_region_reply(connection(), m_regionCookie, 0);
|
|
|
|
if (!reply)
|
|
return;
|
|
|
|
// Convert the reply to a QRegion
|
|
int count = xcb_xfixes_fetch_region_rectangles_length(reply);
|
|
QRegion region;
|
|
|
|
if (count > 1 && count < 16) {
|
|
xcb_rectangle_t *rects = xcb_xfixes_fetch_region_rectangles(reply);
|
|
|
|
QVector<QRect> qrects;
|
|
qrects.reserve(count);
|
|
|
|
for (int i = 0; i < count; i++)
|
|
qrects << QRect(rects[i].x, rects[i].y, rects[i].width, rects[i].height);
|
|
|
|
region.setRects(qrects.constData(), count);
|
|
} else
|
|
region += QRect(reply->extents.x, reply->extents.y,
|
|
reply->extents.width, reply->extents.height);
|
|
|
|
damage_region += region;
|
|
repaints_region += region;
|
|
|
|
free(reply);
|
|
}
|
|
|
|
void Toplevel::addDamageFull()
|
|
{
|
|
if (!compositing())
|
|
return;
|
|
|
|
damage_region = rect();
|
|
repaints_region |= rect();
|
|
|
|
emit damaged(this, rect());
|
|
}
|
|
|
|
void Toplevel::resetDamage()
|
|
{
|
|
damage_region = QRegion();
|
|
}
|
|
|
|
void Toplevel::addRepaint(const QRect& r)
|
|
{
|
|
if (!compositing()) {
|
|
return;
|
|
}
|
|
repaints_region += r;
|
|
emit needsRepaint();
|
|
}
|
|
|
|
void Toplevel::addRepaint(int x, int y, int w, int h)
|
|
{
|
|
QRect r(x, y, w, h);
|
|
addRepaint(r);
|
|
}
|
|
|
|
void Toplevel::addRepaint(const QRegion& r)
|
|
{
|
|
if (!compositing()) {
|
|
return;
|
|
}
|
|
repaints_region += r;
|
|
emit needsRepaint();
|
|
}
|
|
|
|
void Toplevel::addLayerRepaint(const QRect& r)
|
|
{
|
|
if (!compositing()) {
|
|
return;
|
|
}
|
|
layer_repaints_region += r;
|
|
emit needsRepaint();
|
|
}
|
|
|
|
void Toplevel::addLayerRepaint(int x, int y, int w, int h)
|
|
{
|
|
QRect r(x, y, w, h);
|
|
addLayerRepaint(r);
|
|
}
|
|
|
|
void Toplevel::addLayerRepaint(const QRegion& r)
|
|
{
|
|
if (!compositing())
|
|
return;
|
|
layer_repaints_region += r;
|
|
emit needsRepaint();
|
|
}
|
|
|
|
void Toplevel::addRepaintFull()
|
|
{
|
|
repaints_region = visibleRect().translated(-pos());
|
|
emit needsRepaint();
|
|
}
|
|
|
|
void Toplevel::resetRepaints()
|
|
{
|
|
repaints_region = QRegion();
|
|
layer_repaints_region = QRegion();
|
|
}
|
|
|
|
void Toplevel::addWorkspaceRepaint(int x, int y, int w, int h)
|
|
{
|
|
addWorkspaceRepaint(QRect(x, y, w, h));
|
|
}
|
|
|
|
void Toplevel::addWorkspaceRepaint(const QRect& r2)
|
|
{
|
|
if (!compositing())
|
|
return;
|
|
Compositor::self()->addRepaint(r2);
|
|
}
|
|
|
|
bool Toplevel::updateUnredirectedState()
|
|
{
|
|
assert(compositing());
|
|
bool should = options->isUnredirectFullscreen() && shouldUnredirect() && !unredirectSuspend &&
|
|
!shape() && !hasAlpha() && opacity() == 1.0 &&
|
|
!static_cast<EffectsHandlerImpl*>(effects)->activeFullScreenEffect();
|
|
if (should == unredirect)
|
|
return false;
|
|
static QElapsedTimer lastUnredirect;
|
|
static const qint64 msecRedirectInterval = 100;
|
|
if (!lastUnredirect.hasExpired(msecRedirectInterval)) {
|
|
QTimer::singleShot(msecRedirectInterval, Compositor::self(), SLOT(checkUnredirect()));
|
|
return false;
|
|
}
|
|
lastUnredirect.start();
|
|
unredirect = should;
|
|
if (unredirect) {
|
|
qCDebug(KWIN_CORE) << "Unredirecting:" << this;
|
|
xcb_composite_unredirect_window(connection(), frameId(), XCB_COMPOSITE_REDIRECT_MANUAL);
|
|
} else {
|
|
qCDebug(KWIN_CORE) << "Redirecting:" << this;
|
|
xcb_composite_redirect_window(connection(), frameId(), XCB_COMPOSITE_REDIRECT_MANUAL);
|
|
discardWindowPixmap();
|
|
}
|
|
return true;
|
|
}
|
|
|
|
void Toplevel::suspendUnredirect(bool suspend)
|
|
{
|
|
if (unredirectSuspend == suspend)
|
|
return;
|
|
unredirectSuspend = suspend;
|
|
Compositor::self()->checkUnredirect();
|
|
}
|
|
|
|
//****************************************
|
|
// Client
|
|
//****************************************
|
|
|
|
bool Client::setupCompositing()
|
|
{
|
|
if (!Toplevel::setupCompositing()){
|
|
return false;
|
|
}
|
|
if (isDecorated()) {
|
|
decoratedClient()->destroyRenderer();
|
|
}
|
|
updateVisibility(); // for internalKeep()
|
|
return true;
|
|
}
|
|
|
|
void Client::finishCompositing(ReleaseReason releaseReason)
|
|
{
|
|
Toplevel::finishCompositing(releaseReason);
|
|
updateVisibility();
|
|
if (!deleting) {
|
|
if (isDecorated()) {
|
|
decoratedClient()->destroyRenderer();
|
|
}
|
|
}
|
|
// for safety in case KWin is just resizing the window
|
|
resetHaveResizeEffect();
|
|
}
|
|
|
|
bool Client::shouldUnredirect() const
|
|
{
|
|
if (isActiveFullScreen()) {
|
|
ToplevelList stacking = workspace()->xStackingOrder();
|
|
for (int pos = stacking.count() - 1;
|
|
pos >= 0;
|
|
--pos) {
|
|
Toplevel* c = stacking.at(pos);
|
|
if (c == this) // is not covered by any other window, ok to unredirect
|
|
return true;
|
|
if (c->geometry().intersects(geometry()))
|
|
return false;
|
|
}
|
|
abort();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
|
|
//****************************************
|
|
// Unmanaged
|
|
//****************************************
|
|
|
|
bool Unmanaged::shouldUnredirect() const
|
|
{
|
|
// the pixmap is needed for the login effect, a nicer solution would be the login effect increasing
|
|
// refcount for the window pixmap (which would prevent unredirect), avoiding this hack
|
|
if (resourceClass() == "ksplashx"
|
|
|| resourceClass() == "ksplashsimple"
|
|
|| resourceClass() == "ksplashqml"
|
|
)
|
|
return false;
|
|
// it must cover whole display or one xinerama screen, and be the topmost there
|
|
const int desktop = VirtualDesktopManager::self()->current();
|
|
if (geometry() == workspace()->clientArea(FullArea, geometry().center(), desktop)
|
|
|| geometry() == workspace()->clientArea(ScreenArea, geometry().center(), desktop)) {
|
|
ToplevelList stacking = workspace()->xStackingOrder();
|
|
for (int pos = stacking.count() - 1;
|
|
pos >= 0;
|
|
--pos) {
|
|
Toplevel* c = stacking.at(pos);
|
|
if (c == this) // is not covered by any other window, ok to unredirect
|
|
return true;
|
|
if (c->geometry().intersects(geometry()))
|
|
return false;
|
|
}
|
|
abort();
|
|
}
|
|
return false;
|
|
}
|
|
|
|
//****************************************
|
|
// Deleted
|
|
//****************************************
|
|
|
|
bool Deleted::shouldUnredirect() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
|
|
} // namespace
|