9e97c06758
This makes the Scene less overloaded and it's needed for things such as render layers. In hindsight, it would be great to merge checkGraphicsReset() and beginFrame(), e.g. make beginFrame() return the status like in QRhi or VkSwapchain. If it's OUT_OF_DATE or something, reinitialize the compositor.
926 lines
27 KiB
C++
926 lines
27 KiB
C++
/*
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KWin - the KDE window manager
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This file is part of the KDE project.
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SPDX-FileCopyrightText: 2006 Lubos Lunak <l.lunak@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#include "composite.h"
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#include "abstract_output.h"
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#include "dbusinterface.h"
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#include "x11client.h"
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#include "decorations/decoratedclient.h"
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#include "deleted.h"
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#include "effects.h"
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#include "ftrace.h"
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#include "internal_client.h"
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#include "openglbackend.h"
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#include "overlaywindow.h"
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#include "platform.h"
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#include "qpainterbackend.h"
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#include "renderloop.h"
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#include "scene.h"
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#include "scenes/opengl/scene_opengl.h"
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#include "scenes/qpainter/scene_qpainter.h"
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#include "screens.h"
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#include "shadow.h"
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#include "surfaceitem_x11.h"
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#include "unmanaged.h"
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#include "useractions.h"
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#include "utils.h"
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#include "wayland_server.h"
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#include "workspace.h"
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#include "x11syncmanager.h"
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#include "xcbutils.h"
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#include <kwinglplatform.h>
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#include <kwingltexture.h>
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#include <KWaylandServer/surface_interface.h>
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#include <KGlobalAccel>
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#include <KLocalizedString>
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#include <KNotification>
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#include <KSelectionOwner>
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#include <QDateTime>
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#include <QFutureWatcher>
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#include <QMenu>
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#include <QOpenGLContext>
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#include <QQuickWindow>
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#include <QtConcurrentRun>
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#include <QTextStream>
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#include <QTimerEvent>
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#include <xcb/composite.h>
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#include <xcb/damage.h>
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#include <cstdio>
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Q_DECLARE_METATYPE(KWin::X11Compositor::SuspendReason)
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namespace KWin
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{
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// See main.cpp:
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extern int screen_number;
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extern bool is_multihead;
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Compositor *Compositor::s_compositor = nullptr;
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Compositor *Compositor::self()
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{
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return s_compositor;
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}
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WaylandCompositor *WaylandCompositor::create(QObject *parent)
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{
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Q_ASSERT(!s_compositor);
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auto *compositor = new WaylandCompositor(parent);
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s_compositor = compositor;
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return compositor;
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}
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X11Compositor *X11Compositor::create(QObject *parent)
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{
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Q_ASSERT(!s_compositor);
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auto *compositor = new X11Compositor(parent);
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s_compositor = compositor;
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return compositor;
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}
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class CompositorSelectionOwner : public KSelectionOwner
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{
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Q_OBJECT
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public:
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CompositorSelectionOwner(const char *selection)
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: KSelectionOwner(selection, connection(), rootWindow())
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, m_owning(false)
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{
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connect (this, &CompositorSelectionOwner::lostOwnership,
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this, [this]() { m_owning = false; });
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}
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bool owning() const {
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return m_owning;
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}
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void setOwning(bool own) {
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m_owning = own;
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}
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private:
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bool m_owning;
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};
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Compositor::Compositor(QObject* workspace)
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: QObject(workspace)
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, m_state(State::Off)
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, m_selectionOwner(nullptr)
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, m_scene(nullptr)
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{
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connect(options, &Options::configChanged, this, &Compositor::configChanged);
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connect(options, &Options::animationSpeedChanged, this, &Compositor::configChanged);
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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, &QTimer::timeout,
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this, &Compositor::releaseCompositorSelection);
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m_unusedSupportPropertyTimer.setInterval(compositorLostMessageDelay);
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m_unusedSupportPropertyTimer.setSingleShot(true);
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connect(&m_unusedSupportPropertyTimer, &QTimer::timeout,
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this, &Compositor::deleteUnusedSupportProperties);
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// Delay the call to start 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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QTimer::singleShot(0, this, &Compositor::start);
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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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start();
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} else {
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stop();
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}
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}, Qt::QueuedConnection
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);
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// register DBus
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new CompositorDBusInterface(this);
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FTraceLogger::create();
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}
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Compositor::~Compositor()
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{
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deleteUnusedSupportProperties();
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destroyCompositorSelection();
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s_compositor = nullptr;
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}
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bool Compositor::attemptOpenGLCompositing()
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{
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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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return false;
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}
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kwinApp()->platform()->createOpenGLSafePoint(Platform::OpenGLSafePoint::PreInit);
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qScopeGuard([]() {
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kwinApp()->platform()->createOpenGLSafePoint(Platform::OpenGLSafePoint::PostInit);
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});
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QScopedPointer<OpenGLBackend> backend(kwinApp()->platform()->createOpenGLBackend());
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if (!backend) {
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return false;
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}
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if (!backend->isFailed()) {
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backend->init();
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}
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if (backend->isFailed()) {
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return false;
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}
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QScopedPointer<Scene> scene(SceneOpenGL::createScene(backend.data(), this));
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if (!scene || scene->initFailed()) {
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return false;
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}
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m_backend = backend.take();
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m_scene = scene.take();
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// set strict binding
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if (options->isGlStrictBindingFollowsDriver()) {
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options->setGlStrictBinding(!GLPlatform::instance()->supports(LooseBinding));
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}
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qCDebug(KWIN_CORE) << "OpenGL compositing has been successfully initialized";
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return true;
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}
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bool Compositor::attemptQPainterCompositing()
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{
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QScopedPointer<QPainterBackend> backend(kwinApp()->platform()->createQPainterBackend());
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if (!backend || backend->isFailed()) {
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return false;
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}
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QScopedPointer<Scene> scene(SceneQPainter::createScene(backend.data(), this));
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if (!scene || scene->initFailed()) {
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return false;
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}
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m_backend = backend.take();
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m_scene = scene.take();
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qCDebug(KWIN_CORE) << "QPainter compositing has been successfully initialized";
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return true;
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}
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bool Compositor::setupStart()
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{
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if (kwinApp()->isTerminating()) {
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// Don't start while KWin is terminating. An event to restart might be lingering
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// in the event queue due to graphics reset.
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return false;
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}
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if (m_state != State::Off) {
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return false;
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}
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m_state = State::Starting;
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options->reloadCompositingSettings(true);
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initializeX11();
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// There might still be a deleted around, needs to be cleared before
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// 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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Q_EMIT aboutToToggleCompositing();
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auto supportedCompositors = kwinApp()->platform()->supportedCompositors();
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const auto userConfigIt = std::find(supportedCompositors.begin(), supportedCompositors.end(),
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options->compositingMode());
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if (userConfigIt != supportedCompositors.end()) {
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supportedCompositors.erase(userConfigIt);
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supportedCompositors.prepend(options->compositingMode());
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} else {
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qCWarning(KWIN_CORE)
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<< "Configured compositor not supported by Platform. Falling back to defaults";
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}
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for (auto type : qAsConst(supportedCompositors)) {
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bool stop = false;
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switch (type) {
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case OpenGLCompositing:
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qCDebug(KWIN_CORE) << "Attempting to load the OpenGL scene";
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stop = attemptOpenGLCompositing();
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break;
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case QPainterCompositing:
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qCDebug(KWIN_CORE) << "Attempting to load the QPainter scene";
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stop = attemptQPainterCompositing();
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break;
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case NoCompositing:
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qCDebug(KWIN_CORE) << "Starting without compositing...";
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stop = true;
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break;
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}
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if (stop) {
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break;
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}
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}
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if (!m_backend) {
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m_state = State::Off;
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if (auto *con = kwinApp()->x11Connection()) {
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xcb_composite_unredirect_subwindows(con, kwinApp()->x11RootWindow(),
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XCB_COMPOSITE_REDIRECT_MANUAL);
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}
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if (m_selectionOwner) {
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m_selectionOwner->setOwning(false);
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m_selectionOwner->release();
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}
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if (!supportedCompositors.contains(NoCompositing)) {
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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 false;
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}
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kwinApp()->platform()->setSelectedCompositor(m_backend->compositingType());
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if (!Workspace::self() && m_backend && m_backend->compositingType() == QPainterCompositing) {
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// Force Software QtQuick on first startup with QPainter.
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QQuickWindow::setSceneGraphBackend(QSGRendererInterface::Software);
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}
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Q_EMIT sceneCreated();
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return true;
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}
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void Compositor::initializeX11()
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{
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xcb_connection_t *connection = kwinApp()->x11Connection();
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if (!connection) {
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return;
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}
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if (!m_selectionOwner) {
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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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m_selectionOwner = new CompositorSelectionOwner(selection_name);
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connect(m_selectionOwner, &CompositorSelectionOwner::lostOwnership,
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this, &Compositor::stop);
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}
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if (!m_selectionOwner->owning()) {
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// Force claim ownership.
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m_selectionOwner->claim(true);
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m_selectionOwner->setOwning(true);
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}
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xcb_composite_redirect_subwindows(connection, kwinApp()->x11RootWindow(),
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XCB_COMPOSITE_REDIRECT_MANUAL);
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}
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void Compositor::cleanupX11()
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{
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delete m_selectionOwner;
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m_selectionOwner = nullptr;
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}
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void Compositor::startupWithWorkspace()
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{
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connect(kwinApp(), &Application::x11ConnectionChanged,
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this, &Compositor::initializeX11, Qt::UniqueConnection);
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connect(kwinApp(), &Application::x11ConnectionAboutToBeDestroyed,
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this, &Compositor::cleanupX11, Qt::UniqueConnection);
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initializeX11();
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Workspace::self()->markXStackingOrderAsDirty();
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Q_ASSERT(m_scene);
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m_scene->initialize();
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const Platform *platform = kwinApp()->platform();
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if (platform->isPerScreenRenderingEnabled()) {
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const QVector<AbstractOutput *> outputs = platform->enabledOutputs();
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for (AbstractOutput *output : outputs) {
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registerRenderLoop(output->renderLoop(), output);
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}
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connect(platform, &Platform::outputEnabled,
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this, &Compositor::handleOutputEnabled);
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connect(platform, &Platform::outputDisabled,
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this, &Compositor::handleOutputDisabled);
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} else {
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registerRenderLoop(platform->renderLoop(), nullptr);
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}
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m_state = State::On;
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for (X11Client *c : Workspace::self()->clientList()) {
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c->setupCompositing();
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}
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for (Unmanaged *c : Workspace::self()->unmanagedList()) {
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c->setupCompositing();
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}
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for (InternalClient *client : workspace()->internalClients()) {
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client->setupCompositing();
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}
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if (auto *server = waylandServer()) {
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const auto clients = server->clients();
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for (AbstractClient *c : clients) {
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c->setupCompositing();
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}
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}
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// Sets also the 'effects' pointer.
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kwinApp()->platform()->createEffectsHandler(this, m_scene);
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Q_EMIT compositingToggled(true);
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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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m_scene->addRepaintFull();
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}
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void Compositor::registerRenderLoop(RenderLoop *renderLoop, AbstractOutput *output)
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{
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Q_ASSERT(!m_renderLoops.contains(renderLoop));
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m_renderLoops.insert(renderLoop, output);
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connect(renderLoop, &RenderLoop::frameRequested, this, &Compositor::handleFrameRequested);
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}
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void Compositor::unregisterRenderLoop(RenderLoop *renderLoop)
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{
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Q_ASSERT(m_renderLoops.contains(renderLoop));
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m_renderLoops.remove(renderLoop);
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disconnect(renderLoop, &RenderLoop::frameRequested, this, &Compositor::handleFrameRequested);
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}
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void Compositor::handleOutputEnabled(AbstractOutput *output)
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{
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registerRenderLoop(output->renderLoop(), output);
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}
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void Compositor::handleOutputDisabled(AbstractOutput *output)
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{
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unregisterRenderLoop(output->renderLoop());
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}
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void Compositor::scheduleRepaint()
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{
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for (auto it = m_renderLoops.constBegin(); it != m_renderLoops.constEnd(); ++it) {
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it.key()->scheduleRepaint();
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}
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}
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void Compositor::stop()
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{
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if (m_state == State::Off || m_state == State::Stopping) {
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return;
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}
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m_state = State::Stopping;
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Q_EMIT aboutToToggleCompositing();
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m_releaseSelectionTimer.start();
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// Some effects might need access to effect windows when they are about to
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// be destroyed, for example to unreference deleted windows, so we have to
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// make sure that effect windows outlive effects.
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delete effects;
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effects = nullptr;
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if (Workspace::self()) {
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for (X11Client *c : Workspace::self()->clientList()) {
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m_scene->removeToplevel(c);
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}
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for (Unmanaged *c : Workspace::self()->unmanagedList()) {
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m_scene->removeToplevel(c);
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}
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for (InternalClient *client : workspace()->internalClients()) {
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m_scene->removeToplevel(client);
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}
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for (X11Client *c : Workspace::self()->clientList()) {
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c->finishCompositing();
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}
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for (Unmanaged *c : Workspace::self()->unmanagedList()) {
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c->finishCompositing();
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}
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for (InternalClient *client : workspace()->internalClients()) {
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client->finishCompositing();
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}
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if (auto *con = kwinApp()->x11Connection()) {
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xcb_composite_unredirect_subwindows(con, kwinApp()->x11RootWindow(),
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XCB_COMPOSITE_REDIRECT_MANUAL);
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}
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while (!workspace()->deletedList().isEmpty()) {
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workspace()->deletedList().first()->discard();
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}
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}
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if (waylandServer()) {
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const QList<AbstractClient *> toRemoveTopLevel = waylandServer()->clients();
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for (AbstractClient *c : toRemoveTopLevel) {
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m_scene->removeToplevel(c);
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}
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const QList<AbstractClient *> toFinishCompositing = waylandServer()->clients();
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for (AbstractClient *c : toFinishCompositing) {
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c->finishCompositing();
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}
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}
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while (!m_renderLoops.isEmpty()) {
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unregisterRenderLoop(m_renderLoops.firstKey());
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}
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disconnect(kwinApp()->platform(), &Platform::outputEnabled,
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this, &Compositor::handleOutputEnabled);
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disconnect(kwinApp()->platform(), &Platform::outputDisabled,
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this, &Compositor::handleOutputDisabled);
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delete m_scene;
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m_scene = nullptr;
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delete m_backend;
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m_backend = nullptr;
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m_state = State::Off;
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Q_EMIT compositingToggled(false);
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}
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void Compositor::destroyCompositorSelection()
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{
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delete m_selectionOwner;
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m_selectionOwner = nullptr;
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}
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void Compositor::releaseCompositorSelection()
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{
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switch (m_state) {
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case State::On:
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// We are compositing at the moment. Don't release.
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break;
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case State::Off:
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if (m_selectionOwner) {
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qCDebug(KWIN_CORE) << "Releasing compositor selection";
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m_selectionOwner->setOwning(false);
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m_selectionOwner->release();
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}
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break;
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case State::Starting:
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case State::Stopping:
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// Still starting or shutting down the compositor. Starting might fail
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// or after stopping a restart might follow. So test again later on.
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m_releaseSelectionTimer.start();
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break;
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}
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}
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void Compositor::keepSupportProperty(xcb_atom_t atom)
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|
{
|
|
m_unusedSupportProperties.removeAll(atom);
|
|
}
|
|
|
|
void Compositor::removeSupportProperty(xcb_atom_t atom)
|
|
{
|
|
m_unusedSupportProperties << atom;
|
|
m_unusedSupportPropertyTimer.start();
|
|
}
|
|
|
|
void Compositor::deleteUnusedSupportProperties()
|
|
{
|
|
if (m_state == State::Starting || m_state == State::Stopping) {
|
|
// Currently still maybe restarting the compositor.
|
|
m_unusedSupportPropertyTimer.start();
|
|
return;
|
|
}
|
|
if (auto *con = kwinApp()->x11Connection()) {
|
|
for (const xcb_atom_t &atom : qAsConst(m_unusedSupportProperties)) {
|
|
// remove property from root window
|
|
xcb_delete_property(con, kwinApp()->x11RootWindow(), atom);
|
|
}
|
|
m_unusedSupportProperties.clear();
|
|
}
|
|
}
|
|
|
|
void Compositor::configChanged()
|
|
{
|
|
reinitialize();
|
|
}
|
|
|
|
void Compositor::reinitialize()
|
|
{
|
|
// Reparse config. Config options will be reloaded by start()
|
|
kwinApp()->config()->reparseConfiguration();
|
|
|
|
// Restart compositing
|
|
stop();
|
|
start();
|
|
|
|
if (effects) { // start() may fail
|
|
effects->reconfigure();
|
|
}
|
|
}
|
|
|
|
void Compositor::handleFrameRequested(RenderLoop *renderLoop)
|
|
{
|
|
composite(renderLoop);
|
|
}
|
|
|
|
QList<Toplevel *> Compositor::windowsToRender() const
|
|
{
|
|
// Create a list of all windows in the stacking order
|
|
QList<Toplevel *> windows = Workspace::self()->xStackingOrder();
|
|
|
|
// Move elevated windows to the top of the stacking order
|
|
const QList<EffectWindow *> elevatedList = static_cast<EffectsHandlerImpl *>(effects)->elevatedWindows();
|
|
for (EffectWindow *c : elevatedList) {
|
|
Toplevel *t = static_cast<EffectWindowImpl *>(c)->window();
|
|
windows.removeAll(t);
|
|
windows.append(t);
|
|
}
|
|
|
|
// 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.
|
|
for (Toplevel *win : windows) {
|
|
if (!win->readyForPainting()) {
|
|
windows.removeAll(win);
|
|
}
|
|
if (waylandServer() && waylandServer()->isScreenLocked()) {
|
|
if(!win->isLockScreen() && !win->isInputMethod()) {
|
|
windows.removeAll(win);
|
|
}
|
|
}
|
|
}
|
|
return windows;
|
|
}
|
|
|
|
void Compositor::composite(RenderLoop *renderLoop)
|
|
{
|
|
if (m_backend->checkGraphicsReset()) {
|
|
qCDebug(KWIN_CORE) << "Graphics reset occurred";
|
|
KNotification::event(QStringLiteral("graphicsreset"), i18n("Desktop effects were restarted due to a graphics reset"));
|
|
reinitialize();
|
|
return;
|
|
}
|
|
|
|
const auto &output = m_renderLoops[renderLoop];
|
|
fTraceDuration("Paint (", output ? output->name() : QStringLiteral("screens"), ")");
|
|
|
|
const auto windows = windowsToRender();
|
|
|
|
const QRegion repaints = m_scene->repaints(output);
|
|
m_scene->resetRepaints(output);
|
|
|
|
m_scene->paint(output, repaints, windows, renderLoop);
|
|
|
|
if (waylandServer()) {
|
|
const std::chrono::milliseconds frameTime =
|
|
std::chrono::duration_cast<std::chrono::milliseconds>(renderLoop->lastPresentationTimestamp());
|
|
|
|
for (Toplevel *window : windows) {
|
|
if (!window->readyForPainting()) {
|
|
continue;
|
|
}
|
|
if (waylandServer()->isScreenLocked() &&
|
|
!(window->isLockScreen() || window->isInputMethod())) {
|
|
continue;
|
|
}
|
|
if (!window->isOnOutput(output)) {
|
|
continue;
|
|
}
|
|
if (auto surface = window->surface()) {
|
|
surface->frameRendered(frameTime.count());
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Compositor::isActive()
|
|
{
|
|
return m_state == State::On;
|
|
}
|
|
|
|
WaylandCompositor::WaylandCompositor(QObject *parent)
|
|
: Compositor(parent)
|
|
{
|
|
connect(kwinApp(), &Application::x11ConnectionAboutToBeDestroyed,
|
|
this, &WaylandCompositor::destroyCompositorSelection);
|
|
}
|
|
|
|
WaylandCompositor::~WaylandCompositor()
|
|
{
|
|
Q_EMIT aboutToDestroy();
|
|
stop(); // this can't be called in the destructor of Compositor
|
|
}
|
|
|
|
void WaylandCompositor::toggleCompositing()
|
|
{
|
|
// For the shortcut. Not possible on Wayland because we always composite.
|
|
}
|
|
|
|
void WaylandCompositor::start()
|
|
{
|
|
if (!Compositor::setupStart()) {
|
|
// Internal setup failed, abort.
|
|
return;
|
|
}
|
|
|
|
if (Workspace::self()) {
|
|
startupWithWorkspace();
|
|
} else {
|
|
connect(kwinApp(), &Application::workspaceCreated,
|
|
this, &WaylandCompositor::startupWithWorkspace);
|
|
}
|
|
}
|
|
|
|
X11Compositor::X11Compositor(QObject *parent)
|
|
: Compositor(parent)
|
|
, m_suspended(options->isUseCompositing() ? NoReasonSuspend : UserSuspend)
|
|
{
|
|
if (qEnvironmentVariableIsSet("KWIN_MAX_FRAMES_TESTED")) {
|
|
m_framesToTestForSafety = qEnvironmentVariableIntValue("KWIN_MAX_FRAMES_TESTED");
|
|
}
|
|
}
|
|
|
|
X11Compositor::~X11Compositor()
|
|
{
|
|
Q_EMIT aboutToDestroy();
|
|
stop(); // this can't be called in the destructor of Compositor
|
|
}
|
|
|
|
X11SyncManager *X11Compositor::syncManager() const
|
|
{
|
|
return m_syncManager.data();
|
|
}
|
|
|
|
void X11Compositor::toggleCompositing()
|
|
{
|
|
if (m_suspended) {
|
|
// Direct user call; clear all bits.
|
|
resume(AllReasonSuspend);
|
|
} else {
|
|
// But only set the user one (sufficient to suspend).
|
|
suspend(UserSuspend);
|
|
}
|
|
}
|
|
|
|
void X11Compositor::reinitialize()
|
|
{
|
|
// Resume compositing if suspended.
|
|
m_suspended = NoReasonSuspend;
|
|
Compositor::reinitialize();
|
|
}
|
|
|
|
void X11Compositor::configChanged()
|
|
{
|
|
if (m_suspended) {
|
|
stop();
|
|
return;
|
|
}
|
|
Compositor::configChanged();
|
|
}
|
|
|
|
void X11Compositor::suspend(X11Compositor::SuspendReason reason)
|
|
{
|
|
Q_ASSERT(reason != NoReasonSuspend);
|
|
m_suspended |= reason;
|
|
|
|
if (reason & 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);
|
|
}
|
|
}
|
|
stop();
|
|
}
|
|
|
|
void X11Compositor::resume(X11Compositor::SuspendReason reason)
|
|
{
|
|
Q_ASSERT(reason != NoReasonSuspend);
|
|
m_suspended &= ~reason;
|
|
start();
|
|
}
|
|
|
|
void X11Compositor::start()
|
|
{
|
|
if (m_suspended) {
|
|
QStringList reasons;
|
|
if (m_suspended & UserSuspend) {
|
|
reasons << QStringLiteral("Disabled by User");
|
|
}
|
|
if (m_suspended & BlockRuleSuspend) {
|
|
reasons << QStringLiteral("Disabled by Window");
|
|
}
|
|
if (m_suspended & ScriptSuspend) {
|
|
reasons << QStringLiteral("Disabled by Script");
|
|
}
|
|
qCInfo(KWIN_CORE) << "Compositing is suspended, reason:" << reasons;
|
|
return;
|
|
} else if (!kwinApp()->platform()->compositingPossible()) {
|
|
qCWarning(KWIN_CORE) << "Compositing is not possible";
|
|
return;
|
|
}
|
|
if (!Compositor::setupStart()) {
|
|
// Internal setup failed, abort.
|
|
return;
|
|
}
|
|
startupWithWorkspace();
|
|
m_syncManager.reset(X11SyncManager::create());
|
|
}
|
|
|
|
void X11Compositor::stop()
|
|
{
|
|
m_syncManager.reset();
|
|
Compositor::stop();
|
|
}
|
|
|
|
void X11Compositor::composite(RenderLoop *renderLoop)
|
|
{
|
|
if (backend()->overlayWindow() && !isOverlayWindowVisible()) {
|
|
// Return since nothing is visible.
|
|
return;
|
|
}
|
|
|
|
QList<Toplevel *> windows = Workspace::self()->xStackingOrder();
|
|
QList<SurfaceItemX11 *> dirtyItems;
|
|
|
|
// Reset the damage state of each window and fetch the damage region
|
|
// without waiting for a reply
|
|
for (Toplevel *window : qAsConst(windows)) {
|
|
SurfaceItemX11 *surfaceItem = static_cast<SurfaceItemX11 *>(window->surfaceItem());
|
|
if (surfaceItem->fetchDamage()) {
|
|
dirtyItems.append(surfaceItem);
|
|
}
|
|
}
|
|
|
|
if (dirtyItems.count() > 0) {
|
|
if (m_syncManager) {
|
|
m_syncManager->triggerFence();
|
|
}
|
|
xcb_flush(kwinApp()->x11Connection());
|
|
}
|
|
|
|
// Get the replies
|
|
for (SurfaceItemX11 *item : qAsConst(dirtyItems)) {
|
|
item->waitForDamage();
|
|
}
|
|
|
|
if (m_framesToTestForSafety > 0 && (backend()->compositingType() & OpenGLCompositing)) {
|
|
kwinApp()->platform()->createOpenGLSafePoint(Platform::OpenGLSafePoint::PreFrame);
|
|
}
|
|
|
|
Compositor::composite(renderLoop);
|
|
|
|
if (m_syncManager) {
|
|
if (!m_syncManager->endFrame()) {
|
|
qCDebug(KWIN_CORE) << "Aborting explicit synchronization with the X command stream.";
|
|
qCDebug(KWIN_CORE) << "Future frames will be rendered unsynchronized.";
|
|
m_syncManager.reset();
|
|
}
|
|
}
|
|
|
|
if (m_framesToTestForSafety > 0) {
|
|
if (backend()->compositingType() & OpenGLCompositing) {
|
|
kwinApp()->platform()->createOpenGLSafePoint(Platform::OpenGLSafePoint::PostFrame);
|
|
}
|
|
m_framesToTestForSafety--;
|
|
if (m_framesToTestForSafety == 0 && (backend()->compositingType() & OpenGLCompositing)) {
|
|
kwinApp()->platform()->createOpenGLSafePoint(Platform::OpenGLSafePoint::PostLastGuardedFrame);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool X11Compositor::checkForOverlayWindow(WId w) const
|
|
{
|
|
if (!backend()) {
|
|
// No backend, so it cannot be the overlay window.
|
|
return false;
|
|
}
|
|
if (!backend()->overlayWindow()) {
|
|
// No overlay window, it cannot be the overlay.
|
|
return false;
|
|
}
|
|
// Compare the window ID's.
|
|
return w == backend()->overlayWindow()->window();
|
|
}
|
|
|
|
bool X11Compositor::isOverlayWindowVisible() const
|
|
{
|
|
if (!backend()) {
|
|
return false;
|
|
}
|
|
if (!backend()->overlayWindow()) {
|
|
return false;
|
|
}
|
|
return backend()->overlayWindow()->isVisible();
|
|
}
|
|
|
|
void X11Compositor::updateClientCompositeBlocking(X11Client *c)
|
|
{
|
|
if (c) {
|
|
if (c->isBlockingCompositing()) {
|
|
// Do NOT attempt to call suspend(true) from within the eventchain!
|
|
if (!(m_suspended & BlockRuleSuspend))
|
|
QMetaObject::invokeMethod(this, [this]() {
|
|
suspend(BlockRuleSuspend);
|
|
}, Qt::QueuedConnection);
|
|
}
|
|
}
|
|
else if (m_suspended & BlockRuleSuspend) {
|
|
// If !c we just check if we can resume in case a blocking client was lost.
|
|
bool shouldResume = true;
|
|
|
|
for (auto it = Workspace::self()->clientList().constBegin();
|
|
it != Workspace::self()->clientList().constEnd(); ++it) {
|
|
if ((*it)->isBlockingCompositing()) {
|
|
shouldResume = false;
|
|
break;
|
|
}
|
|
}
|
|
if (shouldResume) {
|
|
// Do NOT attempt to call suspend(false) from within the eventchain!
|
|
QMetaObject::invokeMethod(this, [this]() {
|
|
resume(BlockRuleSuspend);
|
|
}, Qt::QueuedConnection);
|
|
}
|
|
}
|
|
}
|
|
|
|
X11Compositor *X11Compositor::self()
|
|
{
|
|
return qobject_cast<X11Compositor *>(Compositor::self());
|
|
}
|
|
|
|
}
|
|
|
|
// included for CompositorSelectionOwner
|
|
#include "composite.moc"
|