Move X11Compositor and WaylandCompositor in their own files
Vlad Zahorodnii
1 year ago
parent
14ab38b596
commit
6dd6e176e3
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/*
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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 "compositor_wayland.h"
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#include "main.h"
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#include "workspace.h"
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namespace KWin
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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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WaylandCompositor::WaylandCompositor(QObject *parent)
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: Compositor(parent)
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{
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connect(kwinApp(), &Application::x11ConnectionAboutToBeDestroyed,
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this, &WaylandCompositor::destroyCompositorSelection);
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}
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WaylandCompositor::~WaylandCompositor()
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{
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Q_EMIT aboutToDestroy();
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stop(); // this can't be called in the destructor of Compositor
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}
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void WaylandCompositor::toggleCompositing()
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{
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// For the shortcut. Not possible on Wayland because we always composite.
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}
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void WaylandCompositor::start()
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{
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if (!Compositor::setupStart()) {
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// Internal setup failed, abort.
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return;
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}
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if (Workspace::self()) {
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startupWithWorkspace();
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} else {
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connect(kwinApp(), &Application::workspaceCreated,
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this, &WaylandCompositor::startupWithWorkspace);
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}
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}
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} // namespace KWin
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#include "moc_compositor_wayland.cpp"
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@ -0,0 +1,34 @@
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/*
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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: 2011 Arthur Arlt <a.arlt@stud.uni-heidelberg.de>
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SPDX-FileCopyrightText: 2012 Martin Gräßlin <mgraesslin@kde.org>
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SPDX-License-Identifier: GPL-2.0-or-later
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*/
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#pragma once
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#include "compositor.h"
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namespace KWin
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{
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class KWIN_EXPORT WaylandCompositor final : public Compositor
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{
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Q_OBJECT
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public:
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static WaylandCompositor *create(QObject *parent = nullptr);
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~WaylandCompositor() override;
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void toggleCompositing() override;
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protected:
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void start() override;
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private:
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explicit WaylandCompositor(QObject *parent);
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};
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} // namespace KWin
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@ -0,0 +1,398 @@
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/*
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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 "compositor_x11.h"
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#include "core/overlaywindow.h"
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#include "core/renderbackend.h"
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#include "options.h"
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#include "scene/surfaceitem_x11.h"
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#include "utils/common.h"
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#include "utils/xcbutils.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 <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 <QAction>
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#include <QOpenGLContext>
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#include <QThread>
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Q_DECLARE_METATYPE(KWin::X11Compositor::SuspendReason)
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namespace KWin
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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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X11Compositor::X11Compositor(QObject *parent)
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: Compositor(parent)
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, m_suspended(options->isUseCompositing() ? NoReasonSuspend : UserSuspend)
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{
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if (qEnvironmentVariableIsSet("KWIN_MAX_FRAMES_TESTED")) {
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m_framesToTestForSafety = qEnvironmentVariableIntValue("KWIN_MAX_FRAMES_TESTED");
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}
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}
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X11Compositor::~X11Compositor()
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{
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Q_EMIT aboutToDestroy();
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if (m_openGLFreezeProtectionThread) {
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m_openGLFreezeProtectionThread->quit();
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m_openGLFreezeProtectionThread->wait();
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}
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stop(); // this can't be called in the destructor of Compositor
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}
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X11SyncManager *X11Compositor::syncManager() const
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{
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return m_syncManager.get();
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}
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void X11Compositor::toggleCompositing()
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{
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if (m_suspended) {
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// Direct user call; clear all bits.
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resume(AllReasonSuspend);
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} else {
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// But only set the user one (sufficient to suspend).
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suspend(UserSuspend);
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}
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}
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void X11Compositor::reinitialize()
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{
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// Resume compositing if suspended.
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m_suspended = NoReasonSuspend;
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Compositor::reinitialize();
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}
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void X11Compositor::configChanged()
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{
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if (m_suspended) {
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stop();
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return;
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}
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Compositor::configChanged();
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}
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void X11Compositor::suspend(X11Compositor::SuspendReason reason)
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{
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Q_ASSERT(reason != NoReasonSuspend);
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m_suspended |= reason;
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if (reason & ScriptSuspend) {
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// When disabled show a shortcut how the user can get back compositing.
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const auto shortcuts = KGlobalAccel::self()->shortcut(workspace()->findChild<QAction *>(QStringLiteral("Suspend Compositing")));
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if (!shortcuts.isEmpty()) {
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// Display notification only if there is the shortcut.
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const QString message =
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i18n("Desktop effects have been suspended by another application.<br/>"
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"You can resume using the '%1' shortcut.",
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shortcuts.first().toString(QKeySequence::NativeText));
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#if KWIN_BUILD_NOTIFICATIONS
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KNotification::event(QStringLiteral("compositingsuspendeddbus"), message);
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#endif
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}
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}
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stop();
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}
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void X11Compositor::resume(X11Compositor::SuspendReason reason)
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{
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Q_ASSERT(reason != NoReasonSuspend);
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m_suspended &= ~reason;
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start();
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}
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void X11Compositor::start()
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{
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if (m_suspended) {
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QStringList reasons;
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if (m_suspended & UserSuspend) {
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reasons << QStringLiteral("Disabled by User");
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}
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if (m_suspended & BlockRuleSuspend) {
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reasons << QStringLiteral("Disabled by Window");
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}
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if (m_suspended & ScriptSuspend) {
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reasons << QStringLiteral("Disabled by Script");
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}
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qCInfo(KWIN_CORE) << "Compositing is suspended, reason:" << reasons;
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return;
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} else if (!compositingPossible()) {
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qCWarning(KWIN_CORE) << "Compositing is not possible";
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return;
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}
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if (!Compositor::setupStart()) {
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// Internal setup failed, abort.
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return;
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}
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startupWithWorkspace();
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m_syncManager.reset(X11SyncManager::create());
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}
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void X11Compositor::stop()
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{
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m_syncManager.reset();
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Compositor::stop();
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}
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void X11Compositor::composite(RenderLoop *renderLoop)
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{
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if (backend()->overlayWindow() && !isOverlayWindowVisible()) {
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// Return since nothing is visible.
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return;
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}
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QList<Window *> windows = workspace()->stackingOrder();
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QList<SurfaceItemX11 *> dirtyItems;
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// Reset the damage state of each window and fetch the damage region
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// without waiting for a reply
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for (Window *window : std::as_const(windows)) {
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SurfaceItemX11 *surfaceItem = static_cast<SurfaceItemX11 *>(window->surfaceItem());
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if (surfaceItem->fetchDamage()) {
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dirtyItems.append(surfaceItem);
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}
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}
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if (dirtyItems.count() > 0) {
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if (m_syncManager) {
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m_syncManager->triggerFence();
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}
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xcb_flush(kwinApp()->x11Connection());
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}
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// Get the replies
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for (SurfaceItemX11 *item : std::as_const(dirtyItems)) {
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item->waitForDamage();
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}
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if (m_framesToTestForSafety > 0 && (backend()->compositingType() & OpenGLCompositing)) {
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createOpenGLSafePoint(OpenGLSafePoint::PreFrame);
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}
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Compositor::composite(renderLoop);
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if (m_syncManager) {
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if (!m_syncManager->endFrame()) {
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qCDebug(KWIN_CORE) << "Aborting explicit synchronization with the X command stream.";
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qCDebug(KWIN_CORE) << "Future frames will be rendered unsynchronized.";
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m_syncManager.reset();
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}
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}
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if (m_framesToTestForSafety > 0) {
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if (backend()->compositingType() & OpenGLCompositing) {
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createOpenGLSafePoint(OpenGLSafePoint::PostFrame);
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}
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m_framesToTestForSafety--;
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if (m_framesToTestForSafety == 0 && (backend()->compositingType() & OpenGLCompositing)) {
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createOpenGLSafePoint(OpenGLSafePoint::PostLastGuardedFrame);
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}
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}
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}
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bool X11Compositor::checkForOverlayWindow(WId w) const
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{
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if (!backend()) {
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// No backend, so it cannot be the overlay window.
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return false;
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}
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if (!backend()->overlayWindow()) {
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// No overlay window, it cannot be the overlay.
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return false;
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}
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// Compare the window ID's.
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return w == backend()->overlayWindow()->window();
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}
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bool X11Compositor::isOverlayWindowVisible() const
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{
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if (!backend()) {
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return false;
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}
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if (!backend()->overlayWindow()) {
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return false;
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}
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return backend()->overlayWindow()->isVisible();
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}
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void X11Compositor::updateClientCompositeBlocking(X11Window *c)
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{
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if (c) {
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if (c->isBlockingCompositing()) {
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// Do NOT attempt to call suspend(true) from within the eventchain!
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if (!(m_suspended & BlockRuleSuspend)) {
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QMetaObject::invokeMethod(
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this, [this]() {
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suspend(BlockRuleSuspend);
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},
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Qt::QueuedConnection);
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}
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}
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} else if (m_suspended & BlockRuleSuspend) {
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// If !c we just check if we can resume in case a blocking client was lost.
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bool shouldResume = true;
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const auto windows = workspace()->windows();
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for (Window *window : windows) {
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X11Window *x11Window = qobject_cast<X11Window *>(window);
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if (x11Window && x11Window->isBlockingCompositing()) {
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shouldResume = false;
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break;
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}
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}
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if (shouldResume) {
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// Do NOT attempt to call suspend(false) from within the eventchain!
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QMetaObject::invokeMethod(
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this, [this]() {
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resume(BlockRuleSuspend);
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},
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Qt::QueuedConnection);
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}
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}
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}
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X11Compositor *X11Compositor::self()
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{
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return qobject_cast<X11Compositor *>(Compositor::self());
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}
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bool X11Compositor::openGLCompositingIsBroken() const
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{
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auto timestamp = KConfigGroup(kwinApp()->config(), "Compositing").readEntry(QLatin1String("LastFailureTimestamp"), 0);
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if (timestamp > 0) {
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if (QDateTime::currentSecsSinceEpoch() - timestamp < 60) {
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return true;
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}
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}
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return false;
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}
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QString X11Compositor::compositingNotPossibleReason() const
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{
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// first off, check whether we figured that we'll crash on detection because of a buggy driver
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KConfigGroup gl_workaround_group(kwinApp()->config(), "Compositing");
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if (gl_workaround_group.readEntry("Backend", "OpenGL") == QLatin1String("OpenGL") && openGLCompositingIsBroken()) {
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return i18n("<b>OpenGL compositing (the default) has crashed KWin in the past.</b><br>"
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"This was most likely due to a driver bug."
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"<p>If you think that you have meanwhile upgraded to a stable driver,<br>"
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"you can reset this protection but <b>be aware that this might result in an immediate crash!</b></p>");
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}
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if (!Xcb::Extensions::self()->isCompositeAvailable() || !Xcb::Extensions::self()->isDamageAvailable()) {
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return i18n("Required X extensions (XComposite and XDamage) are not available.");
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}
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if (!Xcb::Extensions::self()->hasGlx()) {
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return i18n("GLX/OpenGL is not available.");
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}
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return QString();
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}
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bool X11Compositor::compositingPossible() const
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{
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// first off, check whether we figured that we'll crash on detection because of a buggy driver
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KConfigGroup gl_workaround_group(kwinApp()->config(), "Compositing");
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if (gl_workaround_group.readEntry("Backend", "OpenGL") == QLatin1String("OpenGL") && openGLCompositingIsBroken()) {
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qCWarning(KWIN_CORE) << "Compositing disabled: video driver seems unstable. If you think it's a false positive, please try again in a few minutes.";
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return false;
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}
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if (!Xcb::Extensions::self()->isCompositeAvailable()) {
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qCWarning(KWIN_CORE) << "Compositing disabled: no composite extension available";
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return false;
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}
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if (!Xcb::Extensions::self()->isDamageAvailable()) {
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qCWarning(KWIN_CORE) << "Compositing disabled: no damage extension available";
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return false;
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}
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if (Xcb::Extensions::self()->hasGlx()) {
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return true;
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}
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if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES) {
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return true;
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} else if (qstrcmp(qgetenv("KWIN_COMPOSE"), "O2ES") == 0) {
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return true;
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}
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qCWarning(KWIN_CORE) << "Compositing disabled: no OpenGL support";
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return false;
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}
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void X11Compositor::createOpenGLSafePoint(OpenGLSafePoint safePoint)
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{
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auto group = KConfigGroup(kwinApp()->config(), "Compositing");
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switch (safePoint) {
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case OpenGLSafePoint::PreInit:
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// Explicitly write the failure timestamp so that if we crash during
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// OpenGL init, we know we should not try again.
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group.writeEntry(QLatin1String("LastFailureTimestamp"), QDateTime::currentSecsSinceEpoch());
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group.sync();
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// Deliberately continue with PreFrame
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Q_FALLTHROUGH();
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case OpenGLSafePoint::PreFrame:
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if (m_openGLFreezeProtectionThread == nullptr) {
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Q_ASSERT(m_openGLFreezeProtection == nullptr);
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m_openGLFreezeProtectionThread = std::make_unique<QThread>();
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m_openGLFreezeProtectionThread->setObjectName("FreezeDetector");
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m_openGLFreezeProtectionThread->start();
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m_openGLFreezeProtection = std::make_unique<QTimer>();
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m_openGLFreezeProtection->setInterval(15000);
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m_openGLFreezeProtection->setSingleShot(true);
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m_openGLFreezeProtection->start();
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const QString configName = kwinApp()->config()->name();
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m_openGLFreezeProtection->moveToThread(m_openGLFreezeProtectionThread.get());
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connect(
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m_openGLFreezeProtection.get(), &QTimer::timeout, m_openGLFreezeProtection.get(),
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[configName] {
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auto group = KConfigGroup(KSharedConfig::openConfig(configName), "Compositing");
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group.writeEntry(QLatin1String("LastFailureTimestamp"), QDateTime::currentSecsSinceEpoch());
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group.sync();
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KCrash::setDrKonqiEnabled(false);
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qFatal("Freeze in OpenGL initialization detected");
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},
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Qt::DirectConnection);
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} else {
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Q_ASSERT(m_openGLFreezeProtection);
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QMetaObject::invokeMethod(m_openGLFreezeProtection.get(), QOverload<>::of(&QTimer::start), Qt::QueuedConnection);
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}
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break;
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case OpenGLSafePoint::PostInit:
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group.deleteEntry(QLatin1String("LastFailureTimestamp"));
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group.sync();
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// Deliberately continue with PostFrame
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Q_FALLTHROUGH();
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case OpenGLSafePoint::PostFrame:
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QMetaObject::invokeMethod(m_openGLFreezeProtection.get(), &QTimer::stop, Qt::QueuedConnection);
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break;
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case OpenGLSafePoint::PostLastGuardedFrame:
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m_openGLFreezeProtectionThread->quit();
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m_openGLFreezeProtectionThread->wait();
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m_openGLFreezeProtectionThread.reset();
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m_openGLFreezeProtection.reset();
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break;
|
||||
}
|
||||
}
|
||||
|
||||
} // namespace KWin
|
||||
|
||||
#include "moc_compositor_x11.cpp"
|
||||
@ -0,0 +1,112 @@
|
||||
/*
|
||||
KWin - the KDE window manager
|
||||
This file is part of the KDE project.
|
||||
|
||||
SPDX-FileCopyrightText: 2011 Arthur Arlt <a.arlt@stud.uni-heidelberg.de>
|
||||
SPDX-FileCopyrightText: 2012 Martin Gräßlin <mgraesslin@kde.org>
|
||||
|
||||
SPDX-License-Identifier: GPL-2.0-or-later
|
||||
*/
|
||||
|
||||
#pragma once
|
||||
|
||||
#include "compositor.h"
|
||||
|
||||
namespace KWin
|
||||
{
|
||||
|
||||
class X11SyncManager;
|
||||
class X11Window;
|
||||
|
||||
class KWIN_EXPORT X11Compositor final : public Compositor
|
||||
{
|
||||
Q_OBJECT
|
||||
public:
|
||||
enum SuspendReason {
|
||||
NoReasonSuspend = 0,
|
||||
UserSuspend = 1 << 0,
|
||||
BlockRuleSuspend = 1 << 1,
|
||||
ScriptSuspend = 1 << 2,
|
||||
AllReasonSuspend = 0xff
|
||||
};
|
||||
Q_DECLARE_FLAGS(SuspendReasons, SuspendReason)
|
||||
Q_ENUM(SuspendReason)
|
||||
Q_FLAG(SuspendReasons)
|
||||
|
||||
static X11Compositor *create(QObject *parent = nullptr);
|
||||
~X11Compositor() override;
|
||||
|
||||
X11SyncManager *syncManager() const;
|
||||
|
||||
/**
|
||||
* @brief Suspends the Compositor if it is currently active.
|
||||
*
|
||||
* Note: it is possible that the Compositor is not able to suspend. Use isActive to check
|
||||
* whether the Compositor has been suspended.
|
||||
*
|
||||
* @return void
|
||||
* @see resume
|
||||
* @see isActive
|
||||
*/
|
||||
void suspend(SuspendReason reason);
|
||||
|
||||
/**
|
||||
* @brief Resumes the Compositor if it is currently suspended.
|
||||
*
|
||||
* Note: it is possible that the Compositor cannot be resumed, that is there might be Clients
|
||||
* blocking the usage of Compositing or the Scene might be broken. Use isActive to check
|
||||
* whether the Compositor has been resumed. Also check isCompositingPossible and
|
||||
* isOpenGLBroken.
|
||||
*
|
||||
* Note: The starting of the Compositor can require some time and is partially done threaded.
|
||||
* After this method returns the setup may not have been completed.
|
||||
*
|
||||
* @return void
|
||||
* @see suspend
|
||||
* @see isActive
|
||||
* @see isCompositingPossible
|
||||
* @see isOpenGLBroken
|
||||
*/
|
||||
void resume(SuspendReason reason);
|
||||
|
||||
void toggleCompositing() override;
|
||||
void reinitialize() override;
|
||||
void configChanged() override;
|
||||
bool compositingPossible() const override;
|
||||
QString compositingNotPossibleReason() const override;
|
||||
bool openGLCompositingIsBroken() const override;
|
||||
void createOpenGLSafePoint(OpenGLSafePoint safePoint) override;
|
||||
|
||||
/**
|
||||
* Checks whether @p w is the Scene's overlay window.
|
||||
*/
|
||||
bool checkForOverlayWindow(WId w) const;
|
||||
|
||||
/**
|
||||
* @returns Whether the Scene's Overlay X Window is visible.
|
||||
*/
|
||||
bool isOverlayWindowVisible() const;
|
||||
|
||||
void updateClientCompositeBlocking(X11Window *client = nullptr);
|
||||
|
||||
static X11Compositor *self();
|
||||
|
||||
protected:
|
||||
void start() override;
|
||||
void stop() override;
|
||||
void composite(RenderLoop *renderLoop) override;
|
||||
|
||||
private:
|
||||
explicit X11Compositor(QObject *parent);
|
||||
|
||||
std::unique_ptr<QThread> m_openGLFreezeProtectionThread;
|
||||
std::unique_ptr<QTimer> m_openGLFreezeProtection;
|
||||
std::unique_ptr<X11SyncManager> m_syncManager;
|
||||
/**
|
||||
* Whether the Compositor is currently suspended, 8 bits encoding the reason
|
||||
*/
|
||||
SuspendReasons m_suspended;
|
||||
int m_framesToTestForSafety = 3;
|
||||
};
|
||||
|
||||
} // namespace KWin
|
||||
Loading…
Reference in New Issue