3c6dff75d5
On Wayland tear down the Workspace gets destroyed before the Compositor gets destroyed. If the timer fires in that area, the Compositor would crash. It's not possible to start the timer if the Workspace is destroyed, thus it should also be stoped on Workspace destroy. Reviewed-By: Bhushan Shah
1319 lines
41 KiB
C++
1319 lines
41 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 "xcbutils.h"
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#include "platform.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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// 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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if (kwinApp()->platform()->isReady()) {
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QMetaObject::invokeMethod(this, "setup", Qt::QueuedConnection);
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}
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connect(kwinApp()->platform(), &Platform::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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// 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 (!kwinApp()->platform()->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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if (kwinApp()->platform()->openGLCompositingIsBroken())
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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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kwinApp()->platform()->createOpenGLSafePoint(Platform::OpenGLSafePoint::PreInit);
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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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kwinApp()->platform()->createOpenGLSafePoint(Platform::OpenGLSafePoint::PostInit);
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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()->platform()->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()->platform()->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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emit sceneCreated();
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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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connect(workspace(), &Workspace::destroyed, this, [this] { compositeTimer.stop(); });
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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()->platform()->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);
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}
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}
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void Compositor::updateCompositeBlocking()
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{
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updateCompositeBlocking(NULL);
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}
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void Compositor::updateCompositeBlocking(Client *c)
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{
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if (kwinApp()->platform()->requiresCompositing()) {
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return;
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}
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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()->platform()->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 (!kwinApp()->platform()->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 (waylandServer()) {
|
|
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 (!kwinApp()->platform()->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 && !surface()) {
|
|
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 (damage_handle != XCB_NONE &&
|
|
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 (damage_handle == XCB_NONE) {
|
|
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
|