1135 lines
36 KiB
C++
1135 lines
36 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 <config-kwin.h>
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#include "core/output.h"
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#include "core/outputbackend.h"
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#include "core/outputlayer.h"
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#include "core/overlaywindow.h"
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#include "core/renderlayer.h"
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#include "core/renderloop.h"
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#include "dbusinterface.h"
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#include "decorations/decoratedclient.h"
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#include "effects.h"
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#include "ftrace.h"
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#include "internalwindow.h"
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#include "platformsupport/scenes/opengl/openglbackend.h"
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#include "platformsupport/scenes/qpainter/qpainterbackend.h"
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#include "scene/cursordelegate_opengl.h"
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#include "scene/cursordelegate_qpainter.h"
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#include "scene/cursorscene.h"
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#include "scene/itemrenderer_opengl.h"
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#include "scene/itemrenderer_qpainter.h"
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#include "scene/surfaceitem_x11.h"
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#include "scene/workspacescene_opengl.h"
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#include "scene/workspacescene_qpainter.h"
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#include "shadow.h"
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#include "useractions.h"
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#include "utils/common.h"
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#include "utils/xcbutils.h"
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#include "wayland/surface_interface.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 "x11window.h"
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#include "libkwineffects/kwinglplatform.h"
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#include "libkwineffects/kwingltexture.h"
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#include <KCrash>
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#include <KGlobalAccel>
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#include <KLocalizedString>
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#if KWIN_BUILD_NOTIFICATIONS
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#include <KNotification>
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#endif
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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 <QTextStream>
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#include <QTimerEvent>
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#include <QtConcurrentRun>
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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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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, kwinApp()->x11Connection(), kwinApp()->x11RootWindow())
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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]() {
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m_owning = false;
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});
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}
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bool owning() const
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{
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return m_owning;
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}
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void setOwning(bool own)
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{
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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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{
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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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QTimer::singleShot(0, this, &Compositor::start);
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connect(kwinApp(), &Application::x11ConnectionChanged, this, &Compositor::initializeX11);
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connect(kwinApp(), &Application::x11ConnectionAboutToBeDestroyed, this, &Compositor::cleanupX11);
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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 (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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createOpenGLSafePoint(OpenGLSafePoint::PreInit);
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auto safePointScope = qScopeGuard([this]() {
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createOpenGLSafePoint(OpenGLSafePoint::PostInit);
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});
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std::unique_ptr<OpenGLBackend> backend = kwinApp()->outputBackend()->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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const QByteArray forceEnv = qgetenv("KWIN_COMPOSE");
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if (!forceEnv.isEmpty()) {
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if (qstrcmp(forceEnv, "O2") == 0 || qstrcmp(forceEnv, "O2ES") == 0) {
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qCDebug(KWIN_CORE) << "OpenGL 2 compositing enforced by environment variable";
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} else {
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// OpenGL 2 disabled by environment variable
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return false;
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}
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} else {
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if (!backend->isDirectRendering()) {
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return false;
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}
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if (GLPlatform::instance()->recommendedCompositor() < OpenGLCompositing) {
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qCDebug(KWIN_CORE) << "Driver does not recommend OpenGL compositing";
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return false;
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}
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}
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// We only support the OpenGL 2+ shader API, not GL_ARB_shader_objects
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if (!hasGLVersion(2, 0)) {
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qCDebug(KWIN_CORE) << "OpenGL 2.0 is not supported";
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return false;
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}
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m_scene = std::make_unique<WorkspaceSceneOpenGL>(backend.get());
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m_cursorScene = std::make_unique<CursorScene>(std::make_unique<ItemRendererOpenGL>());
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m_backend = std::move(backend);
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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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std::unique_ptr<QPainterBackend> backend(kwinApp()->outputBackend()->createQPainterBackend());
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if (!backend || backend->isFailed()) {
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return false;
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}
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m_scene = std::make_unique<WorkspaceSceneQPainter>(backend.get());
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m_cursorScene = std::make_unique<CursorScene>(std::make_unique<ItemRendererQPainter>());
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m_backend = std::move(backend);
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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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Q_EMIT aboutToToggleCompositing();
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const QVector<CompositingType> availableCompositors = kwinApp()->outputBackend()->supportedCompositors();
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QVector<CompositingType> candidateCompositors;
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// If compositing has been restarted, try to use the last used compositing type.
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if (m_selectedCompositor != NoCompositing) {
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candidateCompositors.append(m_selectedCompositor);
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} else {
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candidateCompositors = availableCompositors;
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const auto userConfigIt = std::find(candidateCompositors.begin(), candidateCompositors.end(), options->compositingMode());
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if (userConfigIt != candidateCompositors.end()) {
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candidateCompositors.erase(userConfigIt);
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candidateCompositors.prepend(options->compositingMode());
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} else {
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qCWarning(KWIN_CORE) << "Configured compositor not supported by Platform. Falling back to defaults";
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}
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}
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for (auto type : std::as_const(candidateCompositors)) {
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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 (!availableCompositors.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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m_selectedCompositor = 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::setGraphicsApi(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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m_selectionOwner = std::make_unique<CompositorSelectionOwner>("_NET_WM_CM_S0");
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connect(m_selectionOwner.get(), &CompositorSelectionOwner::lostOwnership, 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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m_selectionOwner.reset();
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}
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void Compositor::startupWithWorkspace()
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{
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Q_ASSERT(m_scene);
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m_scene->initialize();
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m_cursorScene->initialize();
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const QList<Output *> outputs = workspace()->outputs();
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if (kwinApp()->operationMode() == Application::OperationModeX11) {
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auto workspaceLayer = new RenderLayer(outputs.constFirst()->renderLoop());
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workspaceLayer->setDelegate(std::make_unique<SceneDelegate>(m_scene.get(), nullptr));
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workspaceLayer->setGeometry(workspace()->geometry());
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connect(workspace(), &Workspace::geometryChanged, workspaceLayer, [workspaceLayer]() {
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workspaceLayer->setGeometry(workspace()->geometry());
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});
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addSuperLayer(workspaceLayer);
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} else {
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for (Output *output : outputs) {
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addOutput(output);
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}
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connect(workspace(), &Workspace::outputAdded, this, &Compositor::addOutput);
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connect(workspace(), &Workspace::outputRemoved, this, &Compositor::removeOutput);
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}
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m_state = State::On;
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const auto windows = workspace()->windows();
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for (Window *window : windows) {
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window->setupCompositing();
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}
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// Sets also the 'effects' pointer.
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kwinApp()->createEffectsHandler(this, m_scene.get());
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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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}
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Output *Compositor::findOutput(RenderLoop *loop) const
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{
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const auto outputs = workspace()->outputs();
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for (Output *output : outputs) {
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if (output->renderLoop() == loop) {
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return output;
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}
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}
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return nullptr;
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}
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void Compositor::addOutput(Output *output)
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{
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Q_ASSERT(kwinApp()->operationMode() != Application::OperationModeX11);
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auto workspaceLayer = new RenderLayer(output->renderLoop());
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workspaceLayer->setDelegate(std::make_unique<SceneDelegate>(m_scene.get(), output));
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workspaceLayer->setGeometry(output->rect());
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connect(output, &Output::geometryChanged, workspaceLayer, [output, workspaceLayer]() {
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workspaceLayer->setGeometry(output->rect());
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});
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auto cursorLayer = new RenderLayer(output->renderLoop());
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cursorLayer->setVisible(false);
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if (m_backend->compositingType() == OpenGLCompositing) {
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cursorLayer->setDelegate(std::make_unique<CursorDelegateOpenGL>(output));
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} else {
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cursorLayer->setDelegate(std::make_unique<CursorDelegateQPainter>(output));
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}
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cursorLayer->setParent(workspaceLayer);
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cursorLayer->setSuperlayer(workspaceLayer);
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auto updateCursorLayer = [output, cursorLayer]() {
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const Cursor *cursor = Cursors::self()->currentCursor();
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const QRectF layerRect = output->mapFromGlobal(cursor->geometry());
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bool usesHardwareCursor = false;
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if (!Cursors::self()->isCursorHidden()) {
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usesHardwareCursor = output->setCursor(cursor->source()) && output->moveCursor(layerRect.topLeft());
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} else {
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usesHardwareCursor = output->setCursor(nullptr);
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}
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cursorLayer->setVisible(cursor->isOnOutput(output) && !usesHardwareCursor);
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cursorLayer->setGeometry(layerRect);
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cursorLayer->addRepaintFull();
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};
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auto moveCursorLayer = [output, cursorLayer]() {
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const Cursor *cursor = Cursors::self()->currentCursor();
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const QRectF layerRect = output->mapFromGlobal(cursor->geometry());
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const bool usesHardwareCursor = output->moveCursor(layerRect.topLeft());
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cursorLayer->setVisible(cursor->isOnOutput(output) && !usesHardwareCursor);
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cursorLayer->setGeometry(layerRect);
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cursorLayer->addRepaintFull();
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};
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updateCursorLayer();
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connect(output, &Output::geometryChanged, cursorLayer, updateCursorLayer);
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connect(Cursors::self(), &Cursors::currentCursorChanged, cursorLayer, updateCursorLayer);
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connect(Cursors::self(), &Cursors::hiddenChanged, cursorLayer, updateCursorLayer);
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connect(Cursors::self(), &Cursors::positionChanged, cursorLayer, moveCursorLayer);
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addSuperLayer(workspaceLayer);
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}
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void Compositor::removeOutput(Output *output)
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{
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removeSuperLayer(m_superlayers[output->renderLoop()]);
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}
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void Compositor::addSuperLayer(RenderLayer *layer)
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{
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m_superlayers.insert(layer->loop(), layer);
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connect(layer->loop(), &RenderLoop::frameRequested, this, &Compositor::handleFrameRequested);
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}
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void Compositor::removeSuperLayer(RenderLayer *layer)
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{
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m_superlayers.remove(layer->loop());
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disconnect(layer->loop(), &RenderLoop::frameRequested, this, &Compositor::handleFrameRequested);
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delete layer;
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}
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void Compositor::scheduleRepaint()
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{
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for (auto it = m_superlayers.constBegin(); it != m_superlayers.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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const auto windows = workspace()->windows();
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for (Window *window : windows) {
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window->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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disconnect(workspace(), &Workspace::outputAdded, this, &Compositor::addOutput);
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disconnect(workspace(), &Workspace::outputRemoved, this, &Compositor::removeOutput);
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}
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if (m_backend->compositingType() == OpenGLCompositing) {
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// some layers need a context current for destruction
|
|
static_cast<OpenGLBackend *>(m_backend.get())->makeCurrent();
|
|
}
|
|
|
|
const auto superlayers = m_superlayers;
|
|
for (auto it = superlayers.begin(); it != superlayers.end(); ++it) {
|
|
removeSuperLayer(*it);
|
|
}
|
|
|
|
m_scene.reset();
|
|
m_cursorScene.reset();
|
|
m_backend.reset();
|
|
|
|
m_state = State::Off;
|
|
Q_EMIT compositingToggled(false);
|
|
}
|
|
|
|
void Compositor::destroyCompositorSelection()
|
|
{
|
|
m_selectionOwner.reset();
|
|
}
|
|
|
|
void Compositor::releaseCompositorSelection()
|
|
{
|
|
switch (m_state) {
|
|
case State::On:
|
|
// We are compositing at the moment. Don't release.
|
|
break;
|
|
case State::Off:
|
|
if (m_selectionOwner) {
|
|
qCDebug(KWIN_CORE) << "Releasing compositor selection";
|
|
m_selectionOwner->setOwning(false);
|
|
m_selectionOwner->release();
|
|
}
|
|
break;
|
|
case State::Starting:
|
|
case State::Stopping:
|
|
// Still starting or shutting down the compositor. Starting might fail
|
|
// or after stopping a restart might follow. So test again later on.
|
|
m_releaseSelectionTimer.start();
|
|
break;
|
|
}
|
|
}
|
|
|
|
void Compositor::keepSupportProperty(xcb_atom_t atom)
|
|
{
|
|
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 : std::as_const(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);
|
|
}
|
|
|
|
uint Compositor::outputFormat(Output *output)
|
|
{
|
|
OutputLayer *primaryLayer = m_backend->primaryLayer(output);
|
|
return primaryLayer->format();
|
|
}
|
|
|
|
void Compositor::composite(RenderLoop *renderLoop)
|
|
{
|
|
if (m_backend->checkGraphicsReset()) {
|
|
qCDebug(KWIN_CORE) << "Graphics reset occurred";
|
|
#if KWIN_BUILD_NOTIFICATIONS
|
|
KNotification::event(QStringLiteral("graphicsreset"), i18n("Desktop effects were restarted due to a graphics reset"));
|
|
#endif
|
|
reinitialize();
|
|
return;
|
|
}
|
|
|
|
Output *output = findOutput(renderLoop);
|
|
OutputLayer *primaryLayer = m_backend->primaryLayer(output);
|
|
fTraceDuration("Paint (", output->name(), ")");
|
|
|
|
RenderLayer *superLayer = m_superlayers[renderLoop];
|
|
prePaintPass(superLayer);
|
|
superLayer->setOutputLayer(primaryLayer);
|
|
|
|
SurfaceItem *scanoutCandidate = superLayer->delegate()->scanoutCandidate();
|
|
renderLoop->setFullscreenSurface(scanoutCandidate);
|
|
output->setContentType(scanoutCandidate ? scanoutCandidate->contentType() : ContentType::None);
|
|
|
|
renderLoop->beginFrame();
|
|
bool directScanout = false;
|
|
if (scanoutCandidate) {
|
|
const auto sublayers = superLayer->sublayers();
|
|
const bool scanoutPossible = std::none_of(sublayers.begin(), sublayers.end(), [](RenderLayer *sublayer) {
|
|
return sublayer->isVisible();
|
|
});
|
|
if (scanoutPossible && !output->directScanoutInhibited()) {
|
|
directScanout = primaryLayer->scanout(scanoutCandidate);
|
|
}
|
|
}
|
|
|
|
if (!directScanout) {
|
|
QRegion surfaceDamage = primaryLayer->repaints();
|
|
primaryLayer->resetRepaints();
|
|
preparePaintPass(superLayer, &surfaceDamage);
|
|
|
|
if (auto beginInfo = primaryLayer->beginFrame()) {
|
|
auto &[renderTarget, repaint] = beginInfo.value();
|
|
|
|
const QRegion bufferDamage = surfaceDamage.united(repaint).intersected(superLayer->rect().toAlignedRect());
|
|
|
|
paintPass(superLayer, renderTarget, bufferDamage);
|
|
primaryLayer->endFrame(bufferDamage, surfaceDamage);
|
|
}
|
|
}
|
|
|
|
postPaintPass(superLayer);
|
|
renderLoop->endFrame();
|
|
|
|
m_backend->present(output);
|
|
|
|
// TODO: Put it inside the cursor layer once the cursor layer can be backed by a real output layer.
|
|
if (waylandServer()) {
|
|
const std::chrono::milliseconds frameTime =
|
|
std::chrono::duration_cast<std::chrono::milliseconds>(output->renderLoop()->lastPresentationTimestamp());
|
|
|
|
if (!Cursors::self()->isCursorHidden()) {
|
|
Cursor *cursor = Cursors::self()->currentCursor();
|
|
if (cursor->geometry().intersects(output->geometry())) {
|
|
cursor->markAsRendered(frameTime);
|
|
}
|
|
}
|
|
}
|
|
}
|
|
|
|
void Compositor::prePaintPass(RenderLayer *layer)
|
|
{
|
|
layer->delegate()->prePaint();
|
|
const auto sublayers = layer->sublayers();
|
|
for (RenderLayer *sublayer : sublayers) {
|
|
prePaintPass(sublayer);
|
|
}
|
|
}
|
|
|
|
void Compositor::postPaintPass(RenderLayer *layer)
|
|
{
|
|
layer->delegate()->postPaint();
|
|
const auto sublayers = layer->sublayers();
|
|
for (RenderLayer *sublayer : sublayers) {
|
|
postPaintPass(sublayer);
|
|
}
|
|
}
|
|
|
|
void Compositor::preparePaintPass(RenderLayer *layer, QRegion *repaint)
|
|
{
|
|
// TODO: Cull opaque region.
|
|
*repaint += layer->mapToGlobal(layer->repaints() + layer->delegate()->repaints());
|
|
layer->resetRepaints();
|
|
const auto sublayers = layer->sublayers();
|
|
for (RenderLayer *sublayer : sublayers) {
|
|
if (sublayer->isVisible()) {
|
|
preparePaintPass(sublayer, repaint);
|
|
}
|
|
}
|
|
}
|
|
|
|
void Compositor::paintPass(RenderLayer *layer, const RenderTarget &renderTarget, const QRegion ®ion)
|
|
{
|
|
layer->delegate()->paint(renderTarget, region);
|
|
|
|
const auto sublayers = layer->sublayers();
|
|
for (RenderLayer *sublayer : sublayers) {
|
|
if (sublayer->isVisible()) {
|
|
paintPass(sublayer, renderTarget, region);
|
|
}
|
|
}
|
|
}
|
|
|
|
bool Compositor::isActive()
|
|
{
|
|
return m_state == State::On;
|
|
}
|
|
|
|
bool Compositor::compositingPossible() const
|
|
{
|
|
return true;
|
|
}
|
|
|
|
QString Compositor::compositingNotPossibleReason() const
|
|
{
|
|
return QString();
|
|
}
|
|
|
|
bool Compositor::openGLCompositingIsBroken() const
|
|
{
|
|
return false;
|
|
}
|
|
|
|
void Compositor::createOpenGLSafePoint(OpenGLSafePoint safePoint)
|
|
{
|
|
}
|
|
|
|
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();
|
|
if (m_openGLFreezeProtectionThread) {
|
|
m_openGLFreezeProtectionThread->quit();
|
|
m_openGLFreezeProtectionThread->wait();
|
|
}
|
|
stop(); // this can't be called in the destructor of Compositor
|
|
}
|
|
|
|
X11SyncManager *X11Compositor::syncManager() const
|
|
{
|
|
return m_syncManager.get();
|
|
}
|
|
|
|
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));
|
|
#if KWIN_BUILD_NOTIFICATIONS
|
|
KNotification::event(QStringLiteral("compositingsuspendeddbus"), message);
|
|
#endif
|
|
}
|
|
}
|
|
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 (!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<Window *> windows = workspace()->stackingOrder();
|
|
QList<SurfaceItemX11 *> dirtyItems;
|
|
|
|
// Reset the damage state of each window and fetch the damage region
|
|
// without waiting for a reply
|
|
for (Window *window : std::as_const(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 : std::as_const(dirtyItems)) {
|
|
item->waitForDamage();
|
|
}
|
|
|
|
if (m_framesToTestForSafety > 0 && (backend()->compositingType() & OpenGLCompositing)) {
|
|
createOpenGLSafePoint(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) {
|
|
createOpenGLSafePoint(OpenGLSafePoint::PostFrame);
|
|
}
|
|
m_framesToTestForSafety--;
|
|
if (m_framesToTestForSafety == 0 && (backend()->compositingType() & OpenGLCompositing)) {
|
|
createOpenGLSafePoint(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(X11Window *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;
|
|
|
|
const auto windows = workspace()->windows();
|
|
for (Window *window : windows) {
|
|
X11Window *x11Window = qobject_cast<X11Window *>(window);
|
|
if (x11Window && x11Window->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());
|
|
}
|
|
|
|
bool X11Compositor::openGLCompositingIsBroken() const
|
|
{
|
|
auto timestamp = KConfigGroup(kwinApp()->config(), "Compositing").readEntry(QLatin1String("LastFailureTimestamp"), 0);
|
|
if (timestamp > 0) {
|
|
if (QDateTime::currentSecsSinceEpoch() - timestamp < 60) {
|
|
return true;
|
|
}
|
|
}
|
|
|
|
return false;
|
|
}
|
|
|
|
QString X11Compositor::compositingNotPossibleReason() const
|
|
{
|
|
// first off, check whether we figured that we'll crash on detection because of a buggy driver
|
|
KConfigGroup gl_workaround_group(kwinApp()->config(), "Compositing");
|
|
if (gl_workaround_group.readEntry("Backend", "OpenGL") == QLatin1String("OpenGL") && openGLCompositingIsBroken()) {
|
|
return i18n("<b>OpenGL compositing (the default) has crashed KWin in the past.</b><br>"
|
|
"This was most likely due to a driver bug."
|
|
"<p>If you think that you have meanwhile upgraded to a stable driver,<br>"
|
|
"you can reset this protection but <b>be aware that this might result in an immediate crash!</b></p>");
|
|
}
|
|
|
|
if (!Xcb::Extensions::self()->isCompositeAvailable() || !Xcb::Extensions::self()->isDamageAvailable()) {
|
|
return i18n("Required X extensions (XComposite and XDamage) are not available.");
|
|
}
|
|
if (!Xcb::Extensions::self()->hasGlx()) {
|
|
return i18n("GLX/OpenGL is not available.");
|
|
}
|
|
return QString();
|
|
}
|
|
|
|
bool X11Compositor::compositingPossible() const
|
|
{
|
|
// first off, check whether we figured that we'll crash on detection because of a buggy driver
|
|
KConfigGroup gl_workaround_group(kwinApp()->config(), "Compositing");
|
|
if (gl_workaround_group.readEntry("Backend", "OpenGL") == QLatin1String("OpenGL") && openGLCompositingIsBroken()) {
|
|
qCWarning(KWIN_CORE) << "Compositing disabled: video driver seems unstable. If you think it's a false positive, please try again in a few minutes.";
|
|
return false;
|
|
}
|
|
|
|
if (!Xcb::Extensions::self()->isCompositeAvailable()) {
|
|
qCWarning(KWIN_CORE) << "Compositing disabled: no composite extension available";
|
|
return false;
|
|
}
|
|
if (!Xcb::Extensions::self()->isDamageAvailable()) {
|
|
qCWarning(KWIN_CORE) << "Compositing disabled: no damage extension available";
|
|
return false;
|
|
}
|
|
if (Xcb::Extensions::self()->hasGlx()) {
|
|
return true;
|
|
}
|
|
if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES) {
|
|
return true;
|
|
} else if (qstrcmp(qgetenv("KWIN_COMPOSE"), "O2ES") == 0) {
|
|
return true;
|
|
}
|
|
qCWarning(KWIN_CORE) << "Compositing disabled: no OpenGL support";
|
|
return false;
|
|
}
|
|
|
|
void X11Compositor::createOpenGLSafePoint(OpenGLSafePoint safePoint)
|
|
{
|
|
auto group = KConfigGroup(kwinApp()->config(), "Compositing");
|
|
switch (safePoint) {
|
|
case OpenGLSafePoint::PreInit:
|
|
// Explicitly write the failure timestamp so that if we crash during
|
|
// OpenGL init, we know we should not try again.
|
|
group.writeEntry(QLatin1String("LastFailureTimestamp"), QDateTime::currentSecsSinceEpoch());
|
|
group.sync();
|
|
// Deliberately continue with PreFrame
|
|
Q_FALLTHROUGH();
|
|
case OpenGLSafePoint::PreFrame:
|
|
if (m_openGLFreezeProtectionThread == nullptr) {
|
|
Q_ASSERT(m_openGLFreezeProtection == nullptr);
|
|
m_openGLFreezeProtectionThread = std::make_unique<QThread>();
|
|
m_openGLFreezeProtectionThread->setObjectName("FreezeDetector");
|
|
m_openGLFreezeProtectionThread->start();
|
|
m_openGLFreezeProtection = std::make_unique<QTimer>();
|
|
m_openGLFreezeProtection->setInterval(15000);
|
|
m_openGLFreezeProtection->setSingleShot(true);
|
|
m_openGLFreezeProtection->start();
|
|
const QString configName = kwinApp()->config()->name();
|
|
m_openGLFreezeProtection->moveToThread(m_openGLFreezeProtectionThread.get());
|
|
connect(
|
|
m_openGLFreezeProtection.get(), &QTimer::timeout, m_openGLFreezeProtection.get(),
|
|
[configName] {
|
|
auto group = KConfigGroup(KSharedConfig::openConfig(configName), "Compositing");
|
|
group.writeEntry(QLatin1String("LastFailureTimestamp"), QDateTime::currentSecsSinceEpoch());
|
|
group.sync();
|
|
KCrash::setDrKonqiEnabled(false);
|
|
qFatal("Freeze in OpenGL initialization detected");
|
|
},
|
|
Qt::DirectConnection);
|
|
} else {
|
|
Q_ASSERT(m_openGLFreezeProtection);
|
|
QMetaObject::invokeMethod(m_openGLFreezeProtection.get(), QOverload<>::of(&QTimer::start), Qt::QueuedConnection);
|
|
}
|
|
break;
|
|
case OpenGLSafePoint::PostInit:
|
|
group.deleteEntry(QLatin1String("LastFailureTimestamp"));
|
|
group.sync();
|
|
// Deliberately continue with PostFrame
|
|
Q_FALLTHROUGH();
|
|
case OpenGLSafePoint::PostFrame:
|
|
QMetaObject::invokeMethod(m_openGLFreezeProtection.get(), &QTimer::stop, Qt::QueuedConnection);
|
|
break;
|
|
case OpenGLSafePoint::PostLastGuardedFrame:
|
|
m_openGLFreezeProtectionThread->quit();
|
|
m_openGLFreezeProtectionThread->wait();
|
|
m_openGLFreezeProtectionThread.reset();
|
|
m_openGLFreezeProtection.reset();
|
|
break;
|
|
}
|
|
}
|
|
|
|
}
|
|
|
|
// included for CompositorSelectionOwner
|
|
#include "composite.moc"
|