diff --git a/options.cpp b/options.cpp
index 34a27e428..281bad74c 100644
--- a/options.cpp
+++ b/options.cpp
@@ -1,1155 +1,1177 @@
 /********************************************************************
  KWin - the KDE window manager
  This file is part of the KDE project.
 
 Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
 Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
 Copyright (C) 2012 Martin Gräßlin <m.graesslin@kde.org>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *********************************************************************/
 
 #include "options.h"
 #include "config-kwin.h"
 #include "utils.h"
 #include "platform.h"
 
 #ifndef KCMRULES
 
 #include <QProcess>
 
 #include "screens.h"
 #include "settings.h"
 #include <kwinglplatform.h>
 #include <QOpenGLContext>
 
 #endif //KCMRULES
 
 namespace KWin
 {
 
 #ifndef KCMRULES
 
 int currentRefreshRate()
 {
     return Options::currentRefreshRate();
 }
 
 int Options::currentRefreshRate()
 {
     int rate = -1;
     QString syncScreenName(QLatin1String("primary screen"));
     if (options->refreshRate() > 0) {  // use manually configured refresh rate
         rate = options->refreshRate();
     } else if (Screens::self()->count() > 0) {
         // prefer the refreshrate calculated from the screens mode information
         // at least the nvidia driver reports 50Hz BS ... *again*!
         int syncScreen = 0;
         if (Screens::self()->count() > 1) {
             const QByteArray syncDisplayDevice(qgetenv("__GL_SYNC_DISPLAY_DEVICE"));
             // if __GL_SYNC_DISPLAY_DEVICE is exported, the GPU shall sync to that device
             // so we try to use its refresh rate
             if (!syncDisplayDevice.isEmpty()) {
                 for (int i = 0; i < Screens::self()->count(); ++i) {
                     if (Screens::self()->name(i) == syncDisplayDevice) {
                         syncScreenName = Screens::self()->name(i);
                         syncScreen = i;
                         break;
                     }
                 }
             }
         }
         rate = qRound(Screens::self()->refreshRate(syncScreen)); // TODO forward float precision?
     }
 
     // 0Hz or less is invalid, so we fallback to a default rate
     if (rate <= 0)
         rate = 60; // and not shitty 50Hz for sure! *grrr*
 
     // QTimer gives us 1msec (1000Hz) at best, so we ignore anything higher;
     // however, additional throttling prevents very high rates from taking place anyway
     else if (rate > 1000)
         rate = 1000;
     qCDebug(KWIN_CORE) << "Vertical Refresh rate " << rate << "Hz (" << syncScreenName << ")";
     return rate;
 }
 
 Options::Options(QObject *parent)
     : QObject(parent)
     , m_settings(new Settings(kwinApp()->config()))
     , m_focusPolicy(ClickToFocus)
     , m_nextFocusPrefersMouse(false)
     , m_clickRaise(false)
     , m_autoRaise(false)
     , m_autoRaiseInterval(0)
     , m_delayFocusInterval(0)
     , m_shadeHover(false)
     , m_shadeHoverInterval(0)
     , m_separateScreenFocus(false)
     , m_placement(Placement::NoPlacement)
     , m_borderSnapZone(0)
     , m_windowSnapZone(0)
     , m_centerSnapZone(0)
     , m_snapOnlyWhenOverlapping(false)
     , m_rollOverDesktops(false)
     , m_focusStealingPreventionLevel(0)
     , m_legacyFullscreenSupport(false)
     , m_killPingTimeout(0)
     , m_hideUtilityWindowsForInactive(false)
     , m_inactiveTabsSkipTaskbar(false)
     , m_autogroupSimilarWindows(false)
     , m_autogroupInForeground(false)
     , m_compositingMode(Options::defaultCompositingMode())
     , m_useCompositing(Options::defaultUseCompositing())
     , m_compositingInitialized(Options::defaultCompositingInitialized())
     , m_hiddenPreviews(Options::defaultHiddenPreviews())
     , m_glSmoothScale(Options::defaultGlSmoothScale())
     , m_xrenderSmoothScale(Options::defaultXrenderSmoothScale())
     , m_maxFpsInterval(Options::defaultMaxFpsInterval())
     , m_refreshRate(Options::defaultRefreshRate())
     , m_vBlankTime(Options::defaultVBlankTime())
     , m_glStrictBinding(Options::defaultGlStrictBinding())
     , m_glStrictBindingFollowsDriver(Options::defaultGlStrictBindingFollowsDriver())
     , m_glCoreProfile(Options::defaultGLCoreProfile())
     , m_glPreferBufferSwap(Options::defaultGlPreferBufferSwap())
     , m_glPlatformInterface(Options::defaultGlPlatformInterface())
+    , m_vulkanDevice(0, 0, 0)
     , m_windowsBlockCompositing(true)
     , OpTitlebarDblClick(Options::defaultOperationTitlebarDblClick())
     , CmdActiveTitlebar1(Options::defaultCommandActiveTitlebar1())
     , CmdActiveTitlebar2(Options::defaultCommandActiveTitlebar2())
     , CmdActiveTitlebar3(Options::defaultCommandActiveTitlebar3())
     , CmdInactiveTitlebar1(Options::defaultCommandInactiveTitlebar1())
     , CmdInactiveTitlebar2(Options::defaultCommandInactiveTitlebar2())
     , CmdInactiveTitlebar3(Options::defaultCommandInactiveTitlebar3())
     , CmdTitlebarWheel(Options::defaultCommandTitlebarWheel())
     , CmdWindow1(Options::defaultCommandWindow1())
     , CmdWindow2(Options::defaultCommandWindow2())
     , CmdWindow3(Options::defaultCommandWindow3())
     , CmdWindowWheel(Options::defaultCommandWindowWheel())
     , CmdAll1(Options::defaultCommandAll1())
     , CmdAll2(Options::defaultCommandAll2())
     , CmdAll3(Options::defaultCommandAll3())
     , CmdAllWheel(Options::defaultCommandAllWheel())
     , CmdAllModKey(Options::defaultKeyCmdAllModKey())
     , electric_border_maximize(false)
     , electric_border_tiling(false)
     , electric_border_corner_ratio(0.0)
     , borderless_maximized_windows(false)
     , show_geometry_tip(false)
     , condensed_title(false)
     , animationSpeed(Options::defaultAnimationSpeed())
 {
     m_settings->setDefaults();
     syncFromKcfgc();
 }
 
 Options::~Options()
 {
 }
 
 void Options::setFocusPolicy(FocusPolicy focusPolicy)
 {
     if (m_focusPolicy == focusPolicy) {
         return;
     }
     m_focusPolicy = focusPolicy;
     emit focusPolicyChanged();
     if (m_focusPolicy == ClickToFocus) {
         setAutoRaise(false);
         setAutoRaiseInterval(0);
         setDelayFocusInterval(0);
     }
 }
 
 void Options::setNextFocusPrefersMouse(bool nextFocusPrefersMouse)
 {
     if (m_nextFocusPrefersMouse == nextFocusPrefersMouse) {
         return;
     }
     m_nextFocusPrefersMouse = nextFocusPrefersMouse;
     emit nextFocusPrefersMouseChanged();
 }
 
 void Options::setClickRaise(bool clickRaise)
 {
     if (m_autoRaise) {
         // important: autoRaise implies ClickRaise
         clickRaise = true;
     }
     if (m_clickRaise == clickRaise) {
         return;
     }
     m_clickRaise = clickRaise;
     emit clickRaiseChanged();
 }
 
 void Options::setAutoRaise(bool autoRaise)
 {
     if (m_focusPolicy == ClickToFocus) {
         autoRaise = false;
     }
     if (m_autoRaise == autoRaise) {
         return;
     }
     m_autoRaise = autoRaise;
     if (m_autoRaise) {
         // important: autoRaise implies ClickRaise
         setClickRaise(true);
     }
     emit autoRaiseChanged();
 }
 
 void Options::setAutoRaiseInterval(int autoRaiseInterval)
 {
     if (m_focusPolicy == ClickToFocus) {
         autoRaiseInterval = 0;
     }
     if (m_autoRaiseInterval == autoRaiseInterval) {
         return;
     }
     m_autoRaiseInterval = autoRaiseInterval;
     emit autoRaiseIntervalChanged();
 }
 
 void Options::setDelayFocusInterval(int delayFocusInterval)
 {
     if (m_focusPolicy == ClickToFocus) {
         delayFocusInterval = 0;
     }
     if (m_delayFocusInterval == delayFocusInterval) {
         return;
     }
     m_delayFocusInterval = delayFocusInterval;
     emit delayFocusIntervalChanged();
 }
 
 void Options::setShadeHover(bool shadeHover)
 {
     if (m_shadeHover == shadeHover) {
         return;
     }
     m_shadeHover = shadeHover;
     emit shadeHoverChanged();
 }
 
 void Options::setShadeHoverInterval(int shadeHoverInterval)
 {
     if (m_shadeHoverInterval == shadeHoverInterval) {
         return;
     }
     m_shadeHoverInterval = shadeHoverInterval;
     emit shadeHoverIntervalChanged();
 }
 
 void Options::setSeparateScreenFocus(bool separateScreenFocus)
 {
     if (m_separateScreenFocus == separateScreenFocus) {
         return;
     }
     m_separateScreenFocus = separateScreenFocus;
     emit separateScreenFocusChanged(m_separateScreenFocus);
 }
 
 void Options::setPlacement(int placement)
 {
     if (m_placement == static_cast<Placement::Policy>(placement)) {
         return;
     }
     m_placement = static_cast<Placement::Policy>(placement);
     emit placementChanged();
 }
 
 void Options::setBorderSnapZone(int borderSnapZone)
 {
     if (m_borderSnapZone == borderSnapZone) {
         return;
     }
     m_borderSnapZone = borderSnapZone;
     emit borderSnapZoneChanged();
 }
 
 void Options::setWindowSnapZone(int windowSnapZone)
 {
     if (m_windowSnapZone == windowSnapZone) {
         return;
     }
     m_windowSnapZone = windowSnapZone;
     emit windowSnapZoneChanged();
 }
 
 void Options::setCenterSnapZone(int centerSnapZone)
 {
     if (m_centerSnapZone == centerSnapZone) {
         return;
     }
     m_centerSnapZone = centerSnapZone;
     emit centerSnapZoneChanged();
 }
 
 void Options::setSnapOnlyWhenOverlapping(bool snapOnlyWhenOverlapping)
 {
     if (m_snapOnlyWhenOverlapping == snapOnlyWhenOverlapping) {
         return;
     }
     m_snapOnlyWhenOverlapping = snapOnlyWhenOverlapping;
     emit snapOnlyWhenOverlappingChanged();
 }
 
 void Options::setRollOverDesktops(bool rollOverDesktops)
 {
     if (m_rollOverDesktops == rollOverDesktops) {
         return;
     }
     m_rollOverDesktops = rollOverDesktops;
     emit rollOverDesktopsChanged(m_rollOverDesktops);
 }
 
 void Options::setFocusStealingPreventionLevel(int focusStealingPreventionLevel)
 {
     if (!focusPolicyIsReasonable()) {
         focusStealingPreventionLevel = 0;
     }
     if (m_focusStealingPreventionLevel == focusStealingPreventionLevel) {
         return;
     }
     m_focusStealingPreventionLevel = qMax(0, qMin(4, focusStealingPreventionLevel));
     emit focusStealingPreventionLevelChanged();
 }
 
 void Options::setLegacyFullscreenSupport(bool legacyFullscreenSupport)
 {
     if (m_legacyFullscreenSupport == legacyFullscreenSupport) {
         return;
     }
     m_legacyFullscreenSupport = legacyFullscreenSupport;
     emit legacyFullscreenSupportChanged();
 }
 
 void Options::setOperationTitlebarDblClick(WindowOperation operationTitlebarDblClick)
 {
     if (OpTitlebarDblClick == operationTitlebarDblClick) {
         return;
     }
     OpTitlebarDblClick = operationTitlebarDblClick;
     emit operationTitlebarDblClickChanged();
 }
 
 void Options::setOperationMaxButtonLeftClick(WindowOperation op)
 {
     if (opMaxButtonLeftClick == op) {
         return;
     }
     opMaxButtonLeftClick = op;
     emit operationMaxButtonLeftClickChanged();
 }
 
 void Options::setOperationMaxButtonRightClick(WindowOperation op)
 {
     if (opMaxButtonRightClick == op) {
         return;
     }
     opMaxButtonRightClick = op;
     emit operationMaxButtonRightClickChanged();
 }
 
 void Options::setOperationMaxButtonMiddleClick(WindowOperation op)
 {
     if (opMaxButtonMiddleClick == op) {
         return;
     }
     opMaxButtonMiddleClick = op;
     emit operationMaxButtonMiddleClickChanged();
 }
 
 void Options::setCommandActiveTitlebar1(MouseCommand commandActiveTitlebar1)
 {
     if (CmdActiveTitlebar1 == commandActiveTitlebar1) {
         return;
     }
     CmdActiveTitlebar1 = commandActiveTitlebar1;
     emit commandActiveTitlebar1Changed();
 }
 
 void Options::setCommandActiveTitlebar2(MouseCommand commandActiveTitlebar2)
 {
     if (CmdActiveTitlebar2 == commandActiveTitlebar2) {
         return;
     }
     CmdActiveTitlebar2 = commandActiveTitlebar2;
     emit commandActiveTitlebar2Changed();
 }
 
 void Options::setCommandActiveTitlebar3(MouseCommand commandActiveTitlebar3)
 {
     if (CmdActiveTitlebar3 == commandActiveTitlebar3) {
         return;
     }
     CmdActiveTitlebar3 = commandActiveTitlebar3;
     emit commandActiveTitlebar3Changed();
 }
 
 void Options::setCommandInactiveTitlebar1(MouseCommand commandInactiveTitlebar1)
 {
     if (CmdInactiveTitlebar1 == commandInactiveTitlebar1) {
         return;
     }
     CmdInactiveTitlebar1 = commandInactiveTitlebar1;
     emit commandInactiveTitlebar1Changed();
 }
 
 void Options::setCommandInactiveTitlebar2(MouseCommand commandInactiveTitlebar2)
 {
     if (CmdInactiveTitlebar2 == commandInactiveTitlebar2) {
         return;
     }
     CmdInactiveTitlebar2 = commandInactiveTitlebar2;
     emit commandInactiveTitlebar2Changed();
 }
 
 void Options::setCommandInactiveTitlebar3(MouseCommand commandInactiveTitlebar3)
 {
     if (CmdInactiveTitlebar3 == commandInactiveTitlebar3) {
         return;
     }
     CmdInactiveTitlebar3 = commandInactiveTitlebar3;
     emit commandInactiveTitlebar3Changed();
 }
 
 void Options::setCommandWindow1(MouseCommand commandWindow1)
 {
     if (CmdWindow1 == commandWindow1) {
         return;
     }
     CmdWindow1 = commandWindow1;
     emit commandWindow1Changed();
 }
 
 void Options::setCommandWindow2(MouseCommand commandWindow2)
 {
     if (CmdWindow2 == commandWindow2) {
         return;
     }
     CmdWindow2 = commandWindow2;
     emit commandWindow2Changed();
 }
 
 void Options::setCommandWindow3(MouseCommand commandWindow3)
 {
     if (CmdWindow3 == commandWindow3) {
         return;
     }
     CmdWindow3 = commandWindow3;
     emit commandWindow3Changed();
 }
 
 void Options::setCommandWindowWheel(MouseCommand commandWindowWheel)
 {
     if (CmdWindowWheel == commandWindowWheel) {
         return;
     }
     CmdWindowWheel = commandWindowWheel;
     emit commandWindowWheelChanged();
 }
 
 void Options::setCommandAll1(MouseCommand commandAll1)
 {
     if (CmdAll1 == commandAll1) {
         return;
     }
     CmdAll1 = commandAll1;
     emit commandAll1Changed();
 }
 
 void Options::setCommandAll2(MouseCommand commandAll2)
 {
     if (CmdAll2 == commandAll2) {
         return;
     }
     CmdAll2 = commandAll2;
     emit commandAll2Changed();
 }
 
 void Options::setCommandAll3(MouseCommand commandAll3)
 {
     if (CmdAll3 == commandAll3) {
         return;
     }
     CmdAll3 = commandAll3;
     emit commandAll3Changed();
 }
 
 void Options::setKeyCmdAllModKey(uint keyCmdAllModKey)
 {
     if (CmdAllModKey == keyCmdAllModKey) {
         return;
     }
     CmdAllModKey = keyCmdAllModKey;
     emit keyCmdAllModKeyChanged();
 }
 
 void Options::setShowGeometryTip(bool showGeometryTip)
 {
     if (show_geometry_tip == showGeometryTip) {
         return;
     }
     show_geometry_tip = showGeometryTip;
     emit showGeometryTipChanged();
 }
 
 void Options::setCondensedTitle(bool condensedTitle)
 {
     if (condensed_title == condensedTitle) {
         return;
     }
     condensed_title = condensedTitle;
     emit condensedTitleChanged();
 }
 
 void Options::setElectricBorderMaximize(bool electricBorderMaximize)
 {
     if (electric_border_maximize == electricBorderMaximize) {
         return;
     }
     electric_border_maximize = electricBorderMaximize;
     emit electricBorderMaximizeChanged();
 }
 
 void Options::setElectricBorderTiling(bool electricBorderTiling)
 {
     if (electric_border_tiling == electricBorderTiling) {
         return;
     }
     electric_border_tiling = electricBorderTiling;
     emit electricBorderTilingChanged();
 }
 
 void Options::setElectricBorderCornerRatio(float electricBorderCornerRatio)
 {
     if (electric_border_corner_ratio == electricBorderCornerRatio) {
         return;
     }
     electric_border_corner_ratio = electricBorderCornerRatio;
     emit electricBorderCornerRatioChanged();
 }
 
 void Options::setBorderlessMaximizedWindows(bool borderlessMaximizedWindows)
 {
     if (borderless_maximized_windows == borderlessMaximizedWindows) {
         return;
     }
     borderless_maximized_windows = borderlessMaximizedWindows;
     emit borderlessMaximizedWindowsChanged();
 }
 
 void Options::setKillPingTimeout(int killPingTimeout)
 {
     if (m_killPingTimeout == killPingTimeout) {
         return;
     }
     m_killPingTimeout = killPingTimeout;
     emit killPingTimeoutChanged();
 }
 
 void Options::setHideUtilityWindowsForInactive(bool hideUtilityWindowsForInactive)
 {
     if (m_hideUtilityWindowsForInactive == hideUtilityWindowsForInactive) {
         return;
     }
     m_hideUtilityWindowsForInactive = hideUtilityWindowsForInactive;
     emit hideUtilityWindowsForInactiveChanged();
 }
 
 void Options::setInactiveTabsSkipTaskbar(bool inactiveTabsSkipTaskbar)
 {
     if (m_inactiveTabsSkipTaskbar == inactiveTabsSkipTaskbar) {
         return;
     }
     m_inactiveTabsSkipTaskbar = inactiveTabsSkipTaskbar;
     emit inactiveTabsSkipTaskbarChanged();
 }
 
 void Options::setAutogroupSimilarWindows(bool autogroupSimilarWindows)
 {
     if (m_autogroupSimilarWindows == autogroupSimilarWindows) {
         return;
     }
     m_autogroupSimilarWindows = autogroupSimilarWindows;
     emit autogroupSimilarWindowsChanged();
 }
 
 void Options::setAutogroupInForeground(bool autogroupInForeground)
 {
     if (m_autogroupInForeground == autogroupInForeground) {
         return;
     }
     m_autogroupInForeground = autogroupInForeground;
     emit autogroupInForegroundChanged();
 }
 
 void Options::setCompositingMode(int compositingMode)
 {
     if (m_compositingMode == static_cast<CompositingType>(compositingMode)) {
         return;
     }
     m_compositingMode = static_cast<CompositingType>(compositingMode);
     emit compositingModeChanged();
 }
 
 void Options::setUseCompositing(bool useCompositing)
 {
     if (m_useCompositing == useCompositing) {
         return;
     }
     m_useCompositing = useCompositing;
     emit useCompositingChanged();
 }
 
 void Options::setCompositingInitialized(bool compositingInitialized)
 {
     if (m_compositingInitialized == compositingInitialized) {
         return;
     }
     m_compositingInitialized = compositingInitialized;
     emit compositingInitializedChanged();
 }
 
 void Options::setHiddenPreviews(int hiddenPreviews)
 {
     if (m_hiddenPreviews == static_cast<HiddenPreviews>(hiddenPreviews)) {
         return;
     }
     m_hiddenPreviews = static_cast<HiddenPreviews>(hiddenPreviews);
     emit hiddenPreviewsChanged();
 }
 
 void Options::setGlSmoothScale(int glSmoothScale)
 {
     if (m_glSmoothScale == glSmoothScale) {
         return;
     }
     m_glSmoothScale = glSmoothScale;
     emit glSmoothScaleChanged();
 }
 
 void Options::setXrenderSmoothScale(bool xrenderSmoothScale)
 {
     if (m_xrenderSmoothScale == xrenderSmoothScale) {
         return;
     }
     m_xrenderSmoothScale = xrenderSmoothScale;
     emit xrenderSmoothScaleChanged();
 }
 
 void Options::setMaxFpsInterval(qint64 maxFpsInterval)
 {
     if (m_maxFpsInterval == maxFpsInterval) {
         return;
     }
     m_maxFpsInterval = maxFpsInterval;
     emit maxFpsIntervalChanged();
 }
 
 void Options::setRefreshRate(uint refreshRate)
 {
     if (m_refreshRate == refreshRate) {
         return;
     }
     m_refreshRate = refreshRate;
     emit refreshRateChanged();
 }
 
 void Options::setVBlankTime(qint64 vBlankTime)
 {
     if (m_vBlankTime == vBlankTime) {
         return;
     }
     m_vBlankTime = vBlankTime;
     emit vBlankTimeChanged();
 }
 
 void Options::setGlStrictBinding(bool glStrictBinding)
 {
     if (m_glStrictBinding == glStrictBinding) {
         return;
     }
     m_glStrictBinding = glStrictBinding;
     emit glStrictBindingChanged();
 }
 
 void Options::setGlStrictBindingFollowsDriver(bool glStrictBindingFollowsDriver)
 {
     if (m_glStrictBindingFollowsDriver == glStrictBindingFollowsDriver) {
         return;
     }
     m_glStrictBindingFollowsDriver = glStrictBindingFollowsDriver;
     emit glStrictBindingFollowsDriverChanged();
 }
 
 void Options::setGLCoreProfile(bool value)
 {
     if (m_glCoreProfile == value) {
         return;
     }
     m_glCoreProfile = value;
     emit glCoreProfileChanged();
 }
 
 void Options::setWindowsBlockCompositing(bool value)
 {
     if (m_windowsBlockCompositing == value) {
         return;
     }
     m_windowsBlockCompositing = value;
     emit windowsBlockCompositingChanged();
 }
 
 void Options::setGlPreferBufferSwap(char glPreferBufferSwap)
 {
     if (glPreferBufferSwap == 'a') {
         // buffer cpying is very fast with the nvidia blob
         // but due to restrictions in DRI2 *incredibly* slow for all MESA drivers
         // see http://www.x.org/releases/X11R7.7/doc/dri2proto/dri2proto.txt, item 2.5
         if (GLPlatform::instance()->driver() == Driver_NVidia)
             glPreferBufferSwap = CopyFrontBuffer;
         else if (GLPlatform::instance()->driver() != Driver_Unknown) // undetected, finally resolved when context is initialized
             glPreferBufferSwap = ExtendDamage;
     }
     if (m_glPreferBufferSwap == (GlSwapStrategy)glPreferBufferSwap) {
         return;
     }
     m_glPreferBufferSwap = (GlSwapStrategy)glPreferBufferSwap;
     emit glPreferBufferSwapChanged();
 }
 
+void Options::setVulkanDevice(const VulkanDeviceId &device)
+{
+    if (m_vulkanDevice != device) {
+        m_vulkanDevice = device;
+        emit vulkanDeviceChanged();
+    }
+}
+
 void Options::setGlPlatformInterface(OpenGLPlatformInterface interface)
 {
     // check environment variable
     const QByteArray envOpenGLInterface(qgetenv("KWIN_OPENGL_INTERFACE"));
     if (!envOpenGLInterface.isEmpty()) {
         if (qstrcmp(envOpenGLInterface, "egl") == 0) {
             qCDebug(KWIN_CORE) << "Forcing EGL native interface through environment variable";
             interface = EglPlatformInterface;
         } else if (qstrcmp(envOpenGLInterface, "glx") == 0) {
             qCDebug(KWIN_CORE) << "Forcing GLX native interface through environment variable";
             interface = GlxPlatformInterface;
         }
     }
     if (kwinApp()->shouldUseWaylandForCompositing() && interface == GlxPlatformInterface) {
         // Glx is impossible on Wayland, enforce egl
         qCDebug(KWIN_CORE) << "Forcing EGL native interface for Wayland mode";
         interface = EglPlatformInterface;
     }
 #if !HAVE_EPOXY_GLX
     qCDebug(KWIN_CORE) << "Forcing EGL native interface as compiled without GLX support";
     interface = EglPlatformInterface;
 #endif
     if (QOpenGLContext::openGLModuleType() == QOpenGLContext::LibGLES) {
         qCDebug(KWIN_CORE) << "Forcing EGL native interface as Qt uses OpenGL ES";
         interface = EglPlatformInterface;
     } else if (qstrcmp(qgetenv("KWIN_COMPOSE"), "O2ES") == 0) {
         qCDebug(KWIN_CORE) << "Forcing EGL native interface as OpenGL ES requested through KWIN_COMPOSE environment variable.";
         interface = EglPlatformInterface;
     }
 
     if (m_glPlatformInterface == interface) {
         return;
     }
     m_glPlatformInterface = interface;
     emit glPlatformInterfaceChanged();
 }
 
 void Options::reparseConfiguration()
 {
     m_settings->config()->reparseConfiguration();
 }
 
 void Options::updateSettings()
 {
     loadConfig();
     // Read button tooltip animation effect from kdeglobals
     // Since we want to allow users to enable window decoration tooltips
     // and not kstyle tooltips and vise-versa, we don't read the
     // "EffectNoTooltip" setting from kdeglobals.
 
 
 //    QToolTip::setGloballyEnabled( d->show_tooltips );
 // KDE4 this probably needs to be done manually in clients
 
     // Driver-specific config detection
     setCompositingInitialized(false);
     reloadCompositingSettings();
 
     emit configChanged();
 }
 
 void Options::loadConfig()
 {
     m_settings->load();
 
     syncFromKcfgc();
 
     // Electric borders
     KConfigGroup config(m_settings->config(), "Windows");
     OpTitlebarDblClick = windowOperation(config.readEntry("TitlebarDoubleClickCommand", "Maximize"), true);
     setOperationMaxButtonLeftClick(windowOperation(config.readEntry("MaximizeButtonLeftClickCommand", "Maximize"), true));
     setOperationMaxButtonMiddleClick(windowOperation(config.readEntry("MaximizeButtonMiddleClickCommand", "Maximize (vertical only)"), true));
     setOperationMaxButtonRightClick(windowOperation(config.readEntry("MaximizeButtonRightClickCommand", "Maximize (horizontal only)"), true));
 
     // Mouse bindings
     config = KConfigGroup(m_settings->config(), "MouseBindings");
     // TODO: add properties for missing options
     CmdTitlebarWheel = mouseWheelCommand(config.readEntry("CommandTitlebarWheel", "Switch to Window Tab to the Left/Right"));
     CmdAllModKey = (config.readEntry("CommandAllKey", "Alt") == QStringLiteral("Meta")) ? Qt::Key_Meta : Qt::Key_Alt;
     CmdAllWheel = mouseWheelCommand(config.readEntry("CommandAllWheel", "Nothing"));
     setCommandActiveTitlebar1(mouseCommand(config.readEntry("CommandActiveTitlebar1", "Raise"), true));
     setCommandActiveTitlebar2(mouseCommand(config.readEntry("CommandActiveTitlebar2", "Start Window Tab Drag"), true));
     setCommandActiveTitlebar3(mouseCommand(config.readEntry("CommandActiveTitlebar3", "Operations menu"), true));
     setCommandInactiveTitlebar1(mouseCommand(config.readEntry("CommandInactiveTitlebar1", "Activate and raise"), true));
     setCommandInactiveTitlebar2(mouseCommand(config.readEntry("CommandInactiveTitlebar2", "Start Window Tab Drag"), true));
     setCommandInactiveTitlebar3(mouseCommand(config.readEntry("CommandInactiveTitlebar3", "Operations menu"), true));
     setCommandWindow1(mouseCommand(config.readEntry("CommandWindow1", "Activate, raise and pass click"), false));
     setCommandWindow2(mouseCommand(config.readEntry("CommandWindow2", "Activate and pass click"), false));
     setCommandWindow3(mouseCommand(config.readEntry("CommandWindow3", "Activate and pass click"), false));
     setCommandWindowWheel(mouseCommand(config.readEntry("CommandWindowWheel", "Scroll"), false));
     setCommandAll1(mouseCommand(config.readEntry("CommandAll1", "Move"), false));
     setCommandAll2(mouseCommand(config.readEntry("CommandAll2", "Toggle raise and lower"), false));
     setCommandAll3(mouseCommand(config.readEntry("CommandAll3", "Resize"), false));
 
     // TODO: should they be moved into reloadCompositingSettings?
     config = KConfigGroup(m_settings->config(), "Compositing");
     setMaxFpsInterval(1 * 1000 * 1000 * 1000 / config.readEntry("MaxFPS", Options::defaultMaxFps()));
     setRefreshRate(config.readEntry("RefreshRate", Options::defaultRefreshRate()));
     setVBlankTime(config.readEntry("VBlankTime", Options::defaultVBlankTime()) * 1000); // config in micro, value in nano resolution
 
     // Modifier Only Shortcuts
     config = KConfigGroup(m_settings->config(), "ModifierOnlyShortcuts");
     m_modifierOnlyShortcuts.clear();
     if (config.hasKey("Shift")) {
         m_modifierOnlyShortcuts.insert(Qt::ShiftModifier, config.readEntry("Shift", QStringList()));
     }
     if (config.hasKey("Control")) {
         m_modifierOnlyShortcuts.insert(Qt::ControlModifier, config.readEntry("Control", QStringList()));
     }
     if (config.hasKey("Alt")) {
         m_modifierOnlyShortcuts.insert(Qt::AltModifier, config.readEntry("Alt", QStringList()));
     }
     m_modifierOnlyShortcuts.insert(Qt::MetaModifier, config.readEntry("Meta", QStringList{QStringLiteral("org.kde.plasmashell"),
                                                                                           QStringLiteral("/PlasmaShell"),
                                                                                           QStringLiteral("org.kde.PlasmaShell"),
                                                                                           QStringLiteral("activateLauncherMenu")}));
 }
 
 void Options::syncFromKcfgc()
 {
     setShowGeometryTip(m_settings->geometryTip());
     setCondensedTitle(m_settings->condensedTitle());
     setFocusPolicy(m_settings->focusPolicy());
     setNextFocusPrefersMouse(m_settings->nextFocusPrefersMouse());
     setSeparateScreenFocus(m_settings->separateScreenFocus());
     setRollOverDesktops(m_settings->rollOverDesktops());
     setLegacyFullscreenSupport(m_settings->legacyFullscreenSupport());
     setFocusStealingPreventionLevel(m_settings->focusStealingPreventionLevel());
 
 #ifdef KWIN_BUILD_DECORATIONS
     setPlacement(m_settings->placement());
 #else
     setPlacement(Placement::Maximizing);
 #endif
 
     setAutoRaise(m_settings->autoRaise());
     setAutoRaiseInterval(m_settings->autoRaiseInterval());
     setDelayFocusInterval(m_settings->delayFocusInterval());
     setShadeHover(m_settings->shadeHover());
     setShadeHoverInterval(m_settings->shadeHoverInterval());
     setClickRaise(m_settings->clickRaise());
     setBorderSnapZone(m_settings->borderSnapZone());
     setWindowSnapZone(m_settings->windowSnapZone());
     setCenterSnapZone(m_settings->centerSnapZone());
     setSnapOnlyWhenOverlapping(m_settings->snapOnlyWhenOverlapping());
     setKillPingTimeout(m_settings->killPingTimeout());
     setHideUtilityWindowsForInactive(m_settings->hideUtilityWindowsForInactive());
     setInactiveTabsSkipTaskbar(m_settings->inactiveTabsSkipTaskbar());
     setAutogroupSimilarWindows(m_settings->autogroupSimilarWindows());
     setAutogroupInForeground(m_settings->autogroupInForeground());
     setBorderlessMaximizedWindows(m_settings->borderlessMaximizedWindows());
     setElectricBorderMaximize(m_settings->electricBorderMaximize());
     setElectricBorderTiling(m_settings->electricBorderTiling());
     setElectricBorderCornerRatio(m_settings->electricBorderCornerRatio());
     setWindowsBlockCompositing(m_settings->windowsBlockCompositing());
 
 }
 
 bool Options::loadCompositingConfig (bool force)
 {
     KConfigGroup config(m_settings->config(), "Compositing");
 
     bool useCompositing = false;
     CompositingType compositingMode = NoCompositing;
     QString compositingBackend = config.readEntry("Backend", "OpenGL");
     if (compositingBackend == QStringLiteral("XRender"))
         compositingMode = XRenderCompositing;
     else if (compositingBackend == "QPainter")
         compositingMode = QPainterCompositing;
     else if (compositingBackend == "Vulkan")
         compositingMode = VulkanCompositing;
     else
         compositingMode = OpenGLCompositing;
 
     if (const char *c = getenv("KWIN_COMPOSE")) {
         switch(c[0]) {
         case 'O':
             qCDebug(KWIN_CORE) << "Compositing forced to OpenGL mode by environment variable";
             compositingMode = OpenGLCompositing;
             useCompositing = true;
             break;
         case 'X':
             qCDebug(KWIN_CORE) << "Compositing forced to XRender mode by environment variable";
             compositingMode = XRenderCompositing;
             useCompositing = true;
             break;
         case 'Q':
             qCDebug(KWIN_CORE) << "Compositing forced to QPainter mode by environment variable";
             compositingMode = QPainterCompositing;
             useCompositing = true;
             break;
         case 'V':
             qCDebug(KWIN_CORE) << "Compositing forced to Vulkan mode by environment variable";
             compositingMode = VulkanCompositing;
             useCompositing = true;
             break;
         case 'N':
             if (getenv("KDE_FAILSAFE"))
                 qCDebug(KWIN_CORE) << "Compositing disabled forcefully by KDE failsafe mode";
             else
                 qCDebug(KWIN_CORE) << "Compositing disabled forcefully by environment variable";
             compositingMode = NoCompositing;
             break;
         default:
             qCDebug(KWIN_CORE) << "Unknown KWIN_COMPOSE mode set, ignoring";
             break;
         }
     }
     setCompositingMode(compositingMode);
 
     const bool platformSupportsNoCompositing = kwinApp()->platform()->supportedCompositors().contains(NoCompositing);
     if (m_compositingMode == NoCompositing && platformSupportsNoCompositing) {
         setUseCompositing(false);
         return false; // do not even detect compositing preferences if explicitly disabled
     }
 
     // it's either enforced by env or by initial resume from "suspend" or we check the settings
     setUseCompositing(useCompositing || force || config.readEntry("Enabled", Options::defaultUseCompositing() || !platformSupportsNoCompositing));
 
     if (!m_useCompositing)
         return false; // not enforced or necessary and not "enabled" by settings
     return true;
 }
 
 void Options::reloadCompositingSettings(bool force)
 {
     if (!loadCompositingConfig(force)) {
         return;
     }
     m_settings->load();
     syncFromKcfgc();
     // from now on we've an initial setup and don't have to reload settings on compositing activation
     // see Workspace::setupCompositing(), composite.cpp
     setCompositingInitialized(true);
 
     // Compositing settings
     KConfigGroup config(m_settings->config(), "Compositing");
 
     setGlSmoothScale(qBound(-1, config.readEntry("GLTextureFilter", Options::defaultGlSmoothScale()), 2));
     setGlStrictBindingFollowsDriver(!config.hasKey("GLStrictBinding"));
     if (!isGlStrictBindingFollowsDriver()) {
         setGlStrictBinding(config.readEntry("GLStrictBinding", Options::defaultGlStrictBinding()));
     }
     setGLCoreProfile(config.readEntry("GLCore", Options::defaultGLCoreProfile()));
 
     char c = 0;
     const QString s = config.readEntry("GLPreferBufferSwap", QString(Options::defaultGlPreferBufferSwap()));
     if (!s.isEmpty())
         c = s.at(0).toAscii();
     if (c != 'a' && c != 'c' && c != 'p' && c != 'e')
         c = 0;
     setGlPreferBufferSwap(c);
 
     m_xrenderSmoothScale = config.readEntry("XRenderSmoothScale", false);
 
+    const QStringList vulkanDeviceEntry = config.readEntry("VulkanDevice", QStringList());
+    if (vulkanDeviceEntry.count() == 3) {
+        uint32_t index, vendorId, deviceId;
+        bool ok = true;
+        if (ok) index    = vulkanDeviceEntry.at(0).toUInt(&ok, 0);
+        if (ok) vendorId = vulkanDeviceEntry.at(1).toUInt(&ok, 0);
+        if (ok) deviceId = vulkanDeviceEntry.at(2).toUInt(&ok, 0);
+        if (!ok) index = vendorId = deviceId = 0;
+        setVulkanDevice(VulkanDeviceId(index, vendorId, deviceId));
+    } else {
+        setVulkanDevice(VulkanDeviceId(0, 0, 0));
+    }
+
     HiddenPreviews previews = Options::defaultHiddenPreviews();
     // 4 - off, 5 - shown, 6 - always, other are old values
     int hps = config.readEntry("HiddenPreviews", 5);
     if (hps == 4)
         previews = HiddenPreviewsNever;
     else if (hps == 5)
         previews = HiddenPreviewsShown;
     else if (hps == 6)
         previews = HiddenPreviewsAlways;
     setHiddenPreviews(previews);
 
     // TOOD: add setter
     animationSpeed = qBound(0, config.readEntry("AnimationSpeed", Options::defaultAnimationSpeed()), 6);
 
     auto interfaceToKey = [](OpenGLPlatformInterface interface) {
         switch (interface) {
         case GlxPlatformInterface:
             return QStringLiteral("glx");
         case EglPlatformInterface:
             return QStringLiteral("egl");
         default:
             return QString();
         }
     };
     auto keyToInterface = [](const QString &key) {
         if (key == QStringLiteral("glx")) {
             return GlxPlatformInterface;
         } else if (key == QStringLiteral("egl")) {
             return EglPlatformInterface;
         }
         return defaultGlPlatformInterface();
     };
     setGlPlatformInterface(keyToInterface(config.readEntry("GLPlatformInterface", interfaceToKey(m_glPlatformInterface))));
 }
 
 // restricted should be true for operations that the user may not be able to repeat
 // if the window is moved out of the workspace (e.g. if the user moves a window
 // by the titlebar, and moves it too high beneath Kicker at the top edge, they
 // may not be able to move it back, unless they know about Alt+LMB)
 Options::WindowOperation Options::windowOperation(const QString &name, bool restricted)
 {
     if (name == QStringLiteral("Move"))
         return restricted ? MoveOp : UnrestrictedMoveOp;
     else if (name == QStringLiteral("Resize"))
         return restricted ? ResizeOp : UnrestrictedResizeOp;
     else if (name == QStringLiteral("Maximize"))
         return MaximizeOp;
     else if (name == QStringLiteral("Minimize"))
         return MinimizeOp;
     else if (name == QStringLiteral("Close"))
         return CloseOp;
     else if (name == QStringLiteral("OnAllDesktops"))
         return OnAllDesktopsOp;
     else if (name == QStringLiteral("Shade"))
         return ShadeOp;
     else if (name == QStringLiteral("Operations"))
         return OperationsOp;
     else if (name == QStringLiteral("Maximize (vertical only)"))
         return VMaximizeOp;
     else if (name == QStringLiteral("Maximize (horizontal only)"))
         return HMaximizeOp;
     else if (name == QStringLiteral("Lower"))
         return LowerOp;
     return NoOp;
 }
 
 Options::MouseCommand Options::mouseCommand(const QString &name, bool restricted)
 {
     QString lowerName = name.toLower();
     if (lowerName == QStringLiteral("raise")) return MouseRaise;
     if (lowerName == QStringLiteral("lower")) return MouseLower;
     if (lowerName == QStringLiteral("operations menu")) return MouseOperationsMenu;
     if (lowerName == QStringLiteral("toggle raise and lower")) return MouseToggleRaiseAndLower;
     if (lowerName == QStringLiteral("activate and raise")) return MouseActivateAndRaise;
     if (lowerName == QStringLiteral("activate and lower")) return MouseActivateAndLower;
     if (lowerName == QStringLiteral("activate")) return MouseActivate;
     if (lowerName == QStringLiteral("activate, raise and pass click")) return MouseActivateRaiseAndPassClick;
     if (lowerName == QStringLiteral("activate and pass click")) return MouseActivateAndPassClick;
     if (lowerName == QStringLiteral("scroll")) return MouseNothing;
     if (lowerName == QStringLiteral("activate and scroll")) return MouseActivateAndPassClick;
     if (lowerName == QStringLiteral("activate, raise and scroll")) return MouseActivateRaiseAndPassClick;
     if (lowerName == QStringLiteral("activate, raise and move"))
         return restricted ? MouseActivateRaiseAndMove : MouseActivateRaiseAndUnrestrictedMove;
     if (lowerName == QStringLiteral("move")) return restricted ? MouseMove : MouseUnrestrictedMove;
     if (lowerName == QStringLiteral("resize")) return restricted ? MouseResize : MouseUnrestrictedResize;
     if (lowerName == QStringLiteral("shade")) return MouseShade;
     if (lowerName == QStringLiteral("minimize")) return MouseMinimize;
     if (lowerName == QStringLiteral("start window tab drag")) return MouseDragTab;
     if (lowerName == QStringLiteral("close")) return MouseClose;
     if (lowerName == QStringLiteral("increase opacity")) return MouseOpacityMore;
     if (lowerName == QStringLiteral("decrease opacity")) return MouseOpacityLess;
     if (lowerName == QStringLiteral("nothing")) return MouseNothing;
     return MouseNothing;
 }
 
 Options::MouseWheelCommand Options::mouseWheelCommand(const QString &name)
 {
     QString lowerName = name.toLower();
     if (lowerName == QStringLiteral("raise/lower")) return MouseWheelRaiseLower;
     if (lowerName == QStringLiteral("shade/unshade")) return MouseWheelShadeUnshade;
     if (lowerName == QStringLiteral("maximize/restore")) return MouseWheelMaximizeRestore;
     if (lowerName == QStringLiteral("above/below")) return MouseWheelAboveBelow;
     if (lowerName == QStringLiteral("previous/next desktop")) return MouseWheelPreviousNextDesktop;
     if (lowerName == QStringLiteral("change opacity")) return MouseWheelChangeOpacity;
     if (lowerName == QStringLiteral("switch to window tab to the left/right")) return MouseWheelChangeCurrentTab;
     if (lowerName == QStringLiteral("nothing")) return MouseWheelNothing;
     return MouseWheelChangeCurrentTab;
 }
 
 bool Options::showGeometryTip() const
 {
     return show_geometry_tip;
 }
 
 bool Options::condensedTitle() const
 {
     return condensed_title;
 }
 
 Options::MouseCommand Options::wheelToMouseCommand(MouseWheelCommand com, int delta) const
 {
     switch(com) {
     case MouseWheelRaiseLower:
         return delta > 0 ? MouseRaise : MouseLower;
     case MouseWheelShadeUnshade:
         return delta > 0 ? MouseSetShade : MouseUnsetShade;
     case MouseWheelMaximizeRestore:
         return delta > 0 ? MouseMaximize : MouseRestore;
     case MouseWheelAboveBelow:
         return delta > 0 ? MouseAbove : MouseBelow;
     case MouseWheelPreviousNextDesktop:
         return delta > 0 ? MousePreviousDesktop : MouseNextDesktop;
     case MouseWheelChangeOpacity:
         return delta > 0 ? MouseOpacityMore : MouseOpacityLess;
     case MouseWheelChangeCurrentTab:
         return delta > 0 ? MousePreviousTab : MouseNextTab;
     default:
         return MouseNothing;
     }
 }
 #endif
 
 double Options::animationTimeFactor() const
 {
     const double factors[] = { 0, 0.2, 0.5, 1, 2, 4, 20 };
     return factors[ animationSpeed ];
 }
 
 Options::WindowOperation Options::operationMaxButtonClick(Qt::MouseButtons button) const
 {
     return button == Qt::RightButton ? opMaxButtonRightClick :
            button == Qt::MidButton ?   opMaxButtonMiddleClick :
            opMaxButtonLeftClick;
 }
 
 QStringList Options::modifierOnlyDBusShortcut(Qt::KeyboardModifier mod) const
 {
     return m_modifierOnlyShortcuts.value(mod);
 }
 
 bool Options::isUseCompositing() const
 {
     return m_useCompositing || kwinApp()->platform()->requiresCompositing();
 }
 
 } // namespace
diff --git a/options.h b/options.h
index fe35ae0e9..ded06b83f 100644
--- a/options.h
+++ b/options.h
@@ -1,943 +1,987 @@
 /********************************************************************
  KWin - the KDE window manager
  This file is part of the KDE project.
 
 Copyright (C) 1999, 2000 Matthias Ettrich <ettrich@kde.org>
 Copyright (C) 2003 Lubos Lunak <l.lunak@kde.org>
 Copyright (C) 2012 Martin Gräßlin <m.graesslin@kde.org>
 
 This program is free software; you can redistribute it and/or modify
 it under the terms of the GNU General Public License as published by
 the Free Software Foundation; either version 2 of the License, or
 (at your option) any later version.
 
 This program is distributed in the hope that it will be useful,
 but WITHOUT ANY WARRANTY; without even the implied warranty of
 MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
 GNU General Public License for more details.
 
 You should have received a copy of the GNU General Public License
 along with this program.  If not, see <http://www.gnu.org/licenses/>.
 *********************************************************************/
 
 #ifndef KWIN_OPTIONS_H
 #define KWIN_OPTIONS_H
 
 #include "main.h"
 #include "placement.h"
 
 namespace KWin
 {
 
 // Whether to keep all windows mapped when compositing (i.e. whether to have
 // actively updated window pixmaps).
 enum HiddenPreviews {
     // The normal mode with regard to mapped windows. Hidden (minimized, etc.)
     // and windows on inactive virtual desktops are not mapped, their pixmaps
     // are only their icons.
     HiddenPreviewsNever,
     // Like normal mode, but shown windows (i.e. on inactive virtual desktops)
     // are kept mapped, only hidden windows are unmapped.
     HiddenPreviewsShown,
     // All windows are kept mapped regardless of their state.
     HiddenPreviewsAlways
 };
 
 class Settings;
 
+
+/**
+ * Tuple of a physical device index, vendor ID and device ID.
+ */
+class VulkanDeviceId
+{
+public:
+    VulkanDeviceId(uint32_t index, uint32_t vendorId, uint32_t deviceId)
+        : m_index(index), m_vendorId(vendorId), m_deviceId(deviceId) {}
+
+    uint32_t index() const { return m_index; }
+    uint32_t vendorId() const { return m_vendorId; }
+    uint32_t deviceId() const { return m_deviceId; }
+
+    bool operator == (const VulkanDeviceId &other) const {
+        return m_index == other.m_index &&
+               m_vendorId == other.m_vendorId &&
+               m_deviceId == other.m_deviceId;
+    }
+
+    bool operator != (const VulkanDeviceId &other) const {
+        return m_index != other.m_index ||
+               m_vendorId != other.m_vendorId ||
+               m_deviceId != other.m_deviceId;
+    }
+
+private:
+    uint32_t m_index;
+    uint32_t m_vendorId;
+    uint32_t m_deviceId;
+};
+
+
 class KWIN_EXPORT Options : public QObject
 {
     Q_OBJECT
     Q_ENUMS(FocusPolicy)
     Q_ENUMS(GlSwapStrategy)
     Q_ENUMS(MouseCommand)
     Q_ENUMS(MouseWheelCommand)
     Q_ENUMS(WindowOperation)
 
     Q_PROPERTY(FocusPolicy focusPolicy READ focusPolicy WRITE setFocusPolicy NOTIFY focusPolicyChanged)
     Q_PROPERTY(bool nextFocusPrefersMouse READ isNextFocusPrefersMouse WRITE setNextFocusPrefersMouse NOTIFY nextFocusPrefersMouseChanged)
     /**
        Whether clicking on a window raises it in FocusFollowsMouse
        mode or not.
      */
     Q_PROPERTY(bool clickRaise READ isClickRaise WRITE setClickRaise NOTIFY clickRaiseChanged)
     /**
        whether autoraise is enabled FocusFollowsMouse mode or not.
      */
     Q_PROPERTY(bool autoRaise READ isAutoRaise WRITE setAutoRaise NOTIFY autoRaiseChanged)
     /**
        autoraise interval
      */
     Q_PROPERTY(int autoRaiseInterval READ autoRaiseInterval WRITE setAutoRaiseInterval NOTIFY autoRaiseIntervalChanged)
     /**
        delayed focus interval
      */
     Q_PROPERTY(int delayFocusInterval READ delayFocusInterval WRITE setDelayFocusInterval NOTIFY delayFocusIntervalChanged)
     /**
        Whether shade hover is enabled or not
      */
     Q_PROPERTY(bool shadeHover READ isShadeHover WRITE setShadeHover NOTIFY shadeHoverChanged)
     /**
        shade hover interval
      */
     Q_PROPERTY(int shadeHoverInterval READ shadeHoverInterval WRITE setShadeHoverInterval NOTIFY shadeHoverIntervalChanged)
     /**
      * whether to see Xinerama screens separately for focus (in Alt+Tab, when activating next client)
      **/
     Q_PROPERTY(bool separateScreenFocus READ isSeparateScreenFocus WRITE setSeparateScreenFocus NOTIFY separateScreenFocusChanged)
     Q_PROPERTY(int placement READ placement WRITE setPlacement NOTIFY placementChanged)
     Q_PROPERTY(bool focusPolicyIsReasonable READ focusPolicyIsReasonable NOTIFY focusPolicyIsResonableChanged)
     /**
      * the size of the zone that triggers snapping on desktop borders
      */
     Q_PROPERTY(int borderSnapZone READ borderSnapZone WRITE setBorderSnapZone NOTIFY borderSnapZoneChanged)
     /**
      * the size of the zone that triggers snapping with other windows
      */
     Q_PROPERTY(int windowSnapZone READ windowSnapZone WRITE setWindowSnapZone NOTIFY windowSnapZoneChanged)
     /**
      * the size of the zone that triggers snapping on the screen center
      */
     Q_PROPERTY(int centerSnapZone READ centerSnapZone WRITE setCenterSnapZone NOTIFY centerSnapZoneChanged)
     /**
      * snap only when windows will overlap
      */
     Q_PROPERTY(bool snapOnlyWhenOverlapping READ isSnapOnlyWhenOverlapping WRITE setSnapOnlyWhenOverlapping NOTIFY snapOnlyWhenOverlappingChanged)
     /**
      * whether or not we roll over to the other edge when switching desktops past the edge
      */
     Q_PROPERTY(bool rollOverDesktops READ isRollOverDesktops WRITE setRollOverDesktops NOTIFY rollOverDesktopsChanged)
     /**
      * 0 - 4 , see Workspace::allowClientActivation()
      **/
     Q_PROPERTY(int focusStealingPreventionLevel READ focusStealingPreventionLevel WRITE setFocusStealingPreventionLevel NOTIFY focusStealingPreventionLevelChanged)
     /**
     * support legacy fullscreen windows hack: borderless non-netwm windows with screen geometry
     */
     Q_PROPERTY(bool legacyFullscreenSupport READ isLegacyFullscreenSupport WRITE setLegacyFullscreenSupport NOTIFY legacyFullscreenSupportChanged)
     Q_PROPERTY(KWin::Options::WindowOperation operationTitlebarDblClick READ operationTitlebarDblClick WRITE setOperationTitlebarDblClick NOTIFY operationTitlebarDblClickChanged)
     Q_PROPERTY(KWin::Options::WindowOperation operationMaxButtonLeftClick READ operationMaxButtonLeftClick WRITE setOperationMaxButtonLeftClick NOTIFY operationMaxButtonLeftClickChanged)
     Q_PROPERTY(KWin::Options::WindowOperation operationMaxButtonMiddleClick READ operationMaxButtonMiddleClick WRITE setOperationMaxButtonMiddleClick NOTIFY operationMaxButtonMiddleClickChanged)
     Q_PROPERTY(KWin::Options::WindowOperation operationMaxButtonRightClick READ operationMaxButtonRightClick WRITE setOperationMaxButtonRightClick NOTIFY operationMaxButtonRightClickChanged)
     Q_PROPERTY(MouseCommand commandActiveTitlebar1 READ commandActiveTitlebar1 WRITE setCommandActiveTitlebar1 NOTIFY commandActiveTitlebar1Changed)
     Q_PROPERTY(MouseCommand commandActiveTitlebar2 READ commandActiveTitlebar2 WRITE setCommandActiveTitlebar2 NOTIFY commandActiveTitlebar2Changed)
     Q_PROPERTY(MouseCommand commandActiveTitlebar3 READ commandActiveTitlebar3 WRITE setCommandActiveTitlebar3 NOTIFY commandActiveTitlebar3Changed)
     Q_PROPERTY(MouseCommand commandInactiveTitlebar1 READ commandInactiveTitlebar1 WRITE setCommandInactiveTitlebar1 NOTIFY commandInactiveTitlebar1Changed)
     Q_PROPERTY(MouseCommand commandInactiveTitlebar2 READ commandInactiveTitlebar2 WRITE setCommandInactiveTitlebar2 NOTIFY commandInactiveTitlebar2Changed)
     Q_PROPERTY(MouseCommand commandInactiveTitlebar3 READ commandInactiveTitlebar3 WRITE setCommandInactiveTitlebar3 NOTIFY commandInactiveTitlebar3Changed)
     Q_PROPERTY(MouseCommand commandWindow1 READ commandWindow1 WRITE setCommandWindow1 NOTIFY commandWindow1Changed)
     Q_PROPERTY(MouseCommand commandWindow2 READ commandWindow2 WRITE setCommandWindow2 NOTIFY commandWindow2Changed)
     Q_PROPERTY(MouseCommand commandWindow3 READ commandWindow3 WRITE setCommandWindow3 NOTIFY commandWindow3Changed)
     Q_PROPERTY(MouseCommand commandWindowWheel READ commandWindowWheel WRITE setCommandWindowWheel NOTIFY commandWindowWheelChanged)
     Q_PROPERTY(MouseCommand commandAll1 READ commandAll1 WRITE setCommandAll1 NOTIFY commandAll1Changed)
     Q_PROPERTY(MouseCommand commandAll2 READ commandAll2 WRITE setCommandAll2 NOTIFY commandAll2Changed)
     Q_PROPERTY(MouseCommand commandAll3 READ commandAll3 WRITE setCommandAll3 NOTIFY commandAll3Changed)
     Q_PROPERTY(uint keyCmdAllModKey READ keyCmdAllModKey WRITE setKeyCmdAllModKey NOTIFY keyCmdAllModKeyChanged)
     /**
     * whether the Geometry Tip should be shown during a window move/resize.
     */
     Q_PROPERTY(bool showGeometryTip READ showGeometryTip WRITE setShowGeometryTip NOTIFY showGeometryTipChanged)
     /**
     * whether the visible name should be condensed
     */
     Q_PROPERTY(bool condensedTitle READ condensedTitle WRITE setCondensedTitle NOTIFY condensedTitleChanged)
     /**
     * Whether a window gets maximized when it reaches top screen edge while being moved.
     */
     Q_PROPERTY(bool electricBorderMaximize READ electricBorderMaximize WRITE setElectricBorderMaximize NOTIFY electricBorderMaximizeChanged)
     /**
     * Whether a window is tiled to half screen when reaching left or right screen edge while been moved
     */
     Q_PROPERTY(bool electricBorderTiling READ electricBorderTiling WRITE setElectricBorderTiling NOTIFY electricBorderTilingChanged)
     /**
     * Whether a window is tiled to half screen when reaching left or right screen edge while been moved
     */
     Q_PROPERTY(float electricBorderCornerRatio READ electricBorderCornerRatio WRITE setElectricBorderCornerRatio NOTIFY electricBorderCornerRatioChanged)
     Q_PROPERTY(bool borderlessMaximizedWindows READ borderlessMaximizedWindows WRITE setBorderlessMaximizedWindows NOTIFY borderlessMaximizedWindowsChanged)
     /**
      * timeout before non-responding application will be killed after attempt to close
      **/
     Q_PROPERTY(int killPingTimeout READ killPingTimeout WRITE setKillPingTimeout NOTIFY killPingTimeoutChanged)
     /**
      * Whether to hide utility windows for inactive applications.
      **/
     Q_PROPERTY(bool hideUtilityWindowsForInactive READ isHideUtilityWindowsForInactive WRITE setHideUtilityWindowsForInactive NOTIFY hideUtilityWindowsForInactiveChanged)
     Q_PROPERTY(bool inactiveTabsSkipTaskbar READ isInactiveTabsSkipTaskbar WRITE setInactiveTabsSkipTaskbar NOTIFY inactiveTabsSkipTaskbarChanged)
     Q_PROPERTY(bool autogroupSimilarWindows READ isAutogroupSimilarWindows WRITE setAutogroupSimilarWindows NOTIFY autogroupSimilarWindowsChanged)
     Q_PROPERTY(bool autogroupInForeground READ isAutogroupInForeground WRITE setAutogroupInForeground NOTIFY autogroupInForegroundChanged)
     Q_PROPERTY(int compositingMode READ compositingMode WRITE setCompositingMode NOTIFY compositingModeChanged)
     Q_PROPERTY(bool useCompositing READ isUseCompositing WRITE setUseCompositing NOTIFY useCompositingChanged)
     Q_PROPERTY(bool compositingInitialized READ isCompositingInitialized WRITE setCompositingInitialized NOTIFY compositingInitializedChanged)
     Q_PROPERTY(int hiddenPreviews READ hiddenPreviews WRITE setHiddenPreviews NOTIFY hiddenPreviewsChanged)
     /**
      * 0 = no, 1 = yes when transformed,
      * 2 = try trilinear when transformed; else 1,
      * -1 = auto
      **/
     Q_PROPERTY(int glSmoothScale READ glSmoothScale WRITE setGlSmoothScale NOTIFY glSmoothScaleChanged)
     Q_PROPERTY(bool xrenderSmoothScale READ isXrenderSmoothScale WRITE setXrenderSmoothScale NOTIFY xrenderSmoothScaleChanged)
     Q_PROPERTY(qint64 maxFpsInterval READ maxFpsInterval WRITE setMaxFpsInterval NOTIFY maxFpsIntervalChanged)
     Q_PROPERTY(uint refreshRate READ refreshRate WRITE setRefreshRate NOTIFY refreshRateChanged)
     Q_PROPERTY(qint64 vBlankTime READ vBlankTime WRITE setVBlankTime NOTIFY vBlankTimeChanged)
     Q_PROPERTY(bool glStrictBinding READ isGlStrictBinding WRITE setGlStrictBinding NOTIFY glStrictBindingChanged)
     /**
      * Whether strict binding follows the driver or has been overwritten by a user defined config value.
      * If @c true @link glStrictBinding is set by the OpenGL Scene during initialization.
      * If @c false @link glStrictBinding is set from a config value and not updated during scene initialization.
      **/
     Q_PROPERTY(bool glStrictBindingFollowsDriver READ isGlStrictBindingFollowsDriver WRITE setGlStrictBindingFollowsDriver NOTIFY glStrictBindingFollowsDriverChanged)
     Q_PROPERTY(bool glCoreProfile READ glCoreProfile WRITE setGLCoreProfile NOTIFY glCoreProfileChanged)
     Q_PROPERTY(GlSwapStrategy glPreferBufferSwap READ glPreferBufferSwap WRITE setGlPreferBufferSwap NOTIFY glPreferBufferSwapChanged)
+    Q_PROPERTY(VulkanDeviceId vulkanDevice READ vulkanDevice WRITE setVulkanDevice NOTIFY vulkanDeviceChanged)
     Q_PROPERTY(KWin::OpenGLPlatformInterface glPlatformInterface READ glPlatformInterface WRITE setGlPlatformInterface NOTIFY glPlatformInterfaceChanged)
     Q_PROPERTY(bool windowsBlockCompositing READ windowsBlockCompositing WRITE setWindowsBlockCompositing NOTIFY windowsBlockCompositingChanged)
 public:
 
     explicit Options(QObject *parent = NULL);
     ~Options();
 
     void updateSettings();
 
     /*!
       Different focus policies:
       <ul>
 
       <li>ClickToFocus - Clicking into a window activates it. This is
       also the default.
 
       <li>FocusFollowsMouse - Moving the mouse pointer actively onto a
       normal window activates it. For convenience, the desktop and
       windows on the dock are excluded. They require clicking.
 
       <li>FocusUnderMouse - The window that happens to be under the
       mouse pointer becomes active. The invariant is: no window can
       have focus that is not under the mouse. This also means that
       Alt-Tab won't work properly and popup dialogs are usually
       unsable with the keyboard. Note that the desktop and windows on
       the dock are excluded for convenience. They get focus only when
       clicking on it.
 
       <li>FocusStrictlyUnderMouse - this is even worse than
       FocusUnderMouse. Only the window under the mouse pointer is
       active. If the mouse points nowhere, nothing has the focus. If
       the mouse points onto the desktop, the desktop has focus. The
       same holds for windows on the dock.
 
       Note that FocusUnderMouse and FocusStrictlyUnderMouse are not
       particulary useful. They are only provided for old-fashined
       die-hard UNIX people ;-)
 
       </ul>
      */
     enum FocusPolicy { ClickToFocus, FocusFollowsMouse, FocusUnderMouse, FocusStrictlyUnderMouse };
     FocusPolicy focusPolicy() const {
         return m_focusPolicy;
     }
     bool isNextFocusPrefersMouse() const {
         return m_nextFocusPrefersMouse;
     }
 
     /**
        Whether clicking on a window raises it in FocusFollowsMouse
        mode or not.
      */
     bool isClickRaise() const {
         return m_clickRaise;
     }
 
     /**
        whether autoraise is enabled FocusFollowsMouse mode or not.
      */
     bool isAutoRaise() const {
         return m_autoRaise;
     }
 
     /**
        autoraise interval
      */
     int autoRaiseInterval() const {
         return m_autoRaiseInterval;
     }
 
     /**
        delayed focus interval
      */
     int delayFocusInterval() const {
         return m_delayFocusInterval;
     }
 
     /**
        Whether shade hover is enabled or not
      */
     bool isShadeHover() const {
         return m_shadeHover;
     }
 
     /**
        shade hover interval
      */
     int shadeHoverInterval() {
         return m_shadeHoverInterval;
     }
 
     // whether to see Xinerama screens separately for focus (in Alt+Tab, when activating next client)
     bool isSeparateScreenFocus() const {
         return m_separateScreenFocus;
     }
 
     Placement::Policy placement() const {
         return m_placement;
     }
 
     bool focusPolicyIsReasonable() {
         return m_focusPolicy == ClickToFocus || m_focusPolicy == FocusFollowsMouse;
     }
 
     /**
      * the size of the zone that triggers snapping on desktop borders
      */
     int borderSnapZone() const {
         return m_borderSnapZone;
     }
 
     /**
      * the size of the zone that triggers snapping with other windows
      */
     int windowSnapZone() const {
         return m_windowSnapZone;
     }
 
     /**
      * the size of the zone that triggers snapping on the screen center
      */
     int centerSnapZone() const {
         return m_centerSnapZone;
     }
 
 
     /**
      * snap only when windows will overlap
      */
     bool isSnapOnlyWhenOverlapping() const {
         return m_snapOnlyWhenOverlapping;
     }
 
     /**
      * whether or not we roll over to the other edge when switching desktops past the edge
      */
     bool isRollOverDesktops() const {
         return m_rollOverDesktops;
     }
 
     // 0 - 4 , see Workspace::allowClientActivation()
     int focusStealingPreventionLevel() const {
         return m_focusStealingPreventionLevel;
     }
 
     /**
     * support legacy fullscreen windows hack: borderless non-netwm windows with screen geometry
     */
     bool isLegacyFullscreenSupport() const {
         return m_legacyFullscreenSupport;
     }
 
     enum WindowOperation {
         MaximizeOp = 5000,
         RestoreOp,
         MinimizeOp,
         MoveOp,
         UnrestrictedMoveOp,
         ResizeOp,
         UnrestrictedResizeOp,
         CloseOp,
         OnAllDesktopsOp,
         ShadeOp,
         KeepAboveOp,
         KeepBelowOp,
         OperationsOp,
         WindowRulesOp,
         ToggleStoreSettingsOp = WindowRulesOp, ///< @obsolete
         HMaximizeOp,
         VMaximizeOp,
         LowerOp,
         FullScreenOp,
         NoBorderOp,
         NoOp,
         SetupWindowShortcutOp,
         ApplicationRulesOp,
         RemoveTabFromGroupOp, // Remove from group
         CloseTabGroupOp, // Close the group
         ActivateNextTabOp, // Move left in the group
         ActivatePreviousTabOp, // Move right in the group
         TabDragOp,
     };
 
     WindowOperation operationTitlebarDblClick() const {
         return OpTitlebarDblClick;
     }
     WindowOperation operationMaxButtonLeftClick() const {
         return opMaxButtonLeftClick;
     }
     WindowOperation operationMaxButtonRightClick() const {
         return opMaxButtonRightClick;
     }
     WindowOperation operationMaxButtonMiddleClick() const {
         return opMaxButtonMiddleClick;
     }
     WindowOperation operationMaxButtonClick(Qt::MouseButtons button) const;
 
 
     enum MouseCommand {
         MouseRaise, MouseLower, MouseOperationsMenu, MouseToggleRaiseAndLower,
         MouseActivateAndRaise, MouseActivateAndLower, MouseActivate,
         MouseActivateRaiseAndPassClick, MouseActivateAndPassClick,
         MouseMove, MouseUnrestrictedMove,
         MouseActivateRaiseAndMove, MouseActivateRaiseAndUnrestrictedMove,
         MouseResize, MouseUnrestrictedResize,
         MouseShade, MouseSetShade, MouseUnsetShade,
         MouseMaximize, MouseRestore, MouseMinimize,
         MouseNextDesktop, MousePreviousDesktop,
         MouseAbove, MouseBelow,
         MouseOpacityMore, MouseOpacityLess,
         MouseClose, MousePreviousTab, MouseNextTab, MouseDragTab,
         MouseNothing
     };
 
     enum MouseWheelCommand {
         MouseWheelRaiseLower, MouseWheelShadeUnshade, MouseWheelMaximizeRestore,
         MouseWheelAboveBelow, MouseWheelPreviousNextDesktop,
         MouseWheelChangeOpacity, MouseWheelChangeCurrentTab,
         MouseWheelNothing
     };
 
     MouseCommand operationTitlebarMouseWheel(int delta) const {
         return wheelToMouseCommand(CmdTitlebarWheel, delta);
     }
     MouseCommand operationWindowMouseWheel(int delta) const {
         return wheelToMouseCommand(CmdAllWheel, delta);
     }
 
     MouseCommand commandActiveTitlebar1() const {
         return CmdActiveTitlebar1;
     }
     MouseCommand commandActiveTitlebar2() const {
         return CmdActiveTitlebar2;
     }
     MouseCommand commandActiveTitlebar3() const {
         return CmdActiveTitlebar3;
     }
     MouseCommand commandInactiveTitlebar1() const {
         return CmdInactiveTitlebar1;
     }
     MouseCommand commandInactiveTitlebar2() const {
         return CmdInactiveTitlebar2;
     }
     MouseCommand commandInactiveTitlebar3() const {
         return CmdInactiveTitlebar3;
     }
     MouseCommand commandWindow1() const {
         return CmdWindow1;
     }
     MouseCommand commandWindow2() const {
         return CmdWindow2;
     }
     MouseCommand commandWindow3() const {
         return CmdWindow3;
     }
     MouseCommand commandWindowWheel() const {
         return CmdWindowWheel;
     }
     MouseCommand commandAll1() const {
         return CmdAll1;
     }
     MouseCommand commandAll2() const {
         return CmdAll2;
     }
     MouseCommand commandAll3() const {
         return CmdAll3;
     }
     uint keyCmdAllModKey() const {
         return CmdAllModKey;
     }
     Qt::KeyboardModifier commandAllModifier() const {
         switch (CmdAllModKey) {
         case Qt::Key_Alt:
             return Qt::AltModifier;
         case Qt::Key_Meta:
             return Qt::MetaModifier;
         default:
             Q_UNREACHABLE();
         }
     }
 
     static WindowOperation windowOperation(const QString &name, bool restricted);
     static MouseCommand mouseCommand(const QString &name, bool restricted);
     static MouseWheelCommand mouseWheelCommand(const QString &name);
 
     /**
     * @returns true if the Geometry Tip should be shown during a window move/resize.
     */
     bool showGeometryTip() const;
 
     /**
      * returns whether the user prefers his caption clean
      */
     bool condensedTitle() const;
 
     /**
     * @returns true if a window gets maximized when it reaches top screen edge
     * while being moved.
     */
     bool electricBorderMaximize() const {
         return electric_border_maximize;
     }
     /**
     * @returns true if window is tiled to half screen when reaching left or
     * right screen edge while been moved
     */
     bool electricBorderTiling() const {
         return electric_border_tiling;
     }
     /**
     * @returns the factor that determines the corner part of the edge (ie. 0.1 means tiny corner)
     */
     float electricBorderCornerRatio() const {
         return electric_border_corner_ratio;
     }
 
     bool borderlessMaximizedWindows() const {
         return borderless_maximized_windows;
     }
 
     // timeout before non-responding application will be killed after attempt to close
     int killPingTimeout() const {
         return m_killPingTimeout;
     }
 
     // Whether to hide utility windows for inactive applications.
     bool isHideUtilityWindowsForInactive() const {
         return m_hideUtilityWindowsForInactive;
     }
 
     bool isInactiveTabsSkipTaskbar() const {
         return m_inactiveTabsSkipTaskbar;
     }
     bool isAutogroupSimilarWindows() const {
         return m_autogroupSimilarWindows;
     }
     bool isAutogroupInForeground() const {
         return m_autogroupInForeground;
     }
 
     // Desktop effects
     double animationTimeFactor() const;
 
     //----------------------
     // Compositing settings
     void reloadCompositingSettings(bool force = false);
     CompositingType compositingMode() const {
         return m_compositingMode;
     }
     void setCompositingMode(CompositingType mode) {
         m_compositingMode = mode;
     }
     // Separate to mode so the user can toggle
     bool isUseCompositing() const;
     bool isCompositingInitialized() const {
         return m_compositingInitialized;
     }
 
     // General preferences
     HiddenPreviews hiddenPreviews() const {
         return m_hiddenPreviews;
     }
     // OpenGL
     // 0 = no, 1 = yes when transformed,
     // 2 = try trilinear when transformed; else 1,
     // -1 = auto
     int glSmoothScale() const {
         return m_glSmoothScale;
     }
     // XRender
     bool isXrenderSmoothScale() const {
         return m_xrenderSmoothScale;
     }
 
     qint64 maxFpsInterval() const {
         return m_maxFpsInterval;
     }
     // Settings that should be auto-detected
     uint refreshRate() const {
         return m_refreshRate;
     }
     qint64 vBlankTime() const {
         return m_vBlankTime;
     }
     bool isGlStrictBinding() const {
         return m_glStrictBinding;
     }
     bool isGlStrictBindingFollowsDriver() const {
         return m_glStrictBindingFollowsDriver;
     }
     bool glCoreProfile() const {
         return m_glCoreProfile;
     }
     OpenGLPlatformInterface glPlatformInterface() const {
         return m_glPlatformInterface;
     }
 
     enum GlSwapStrategy { NoSwapEncourage = 0, CopyFrontBuffer = 'c', PaintFullScreen = 'p', ExtendDamage = 'e', AutoSwapStrategy = 'a' };
     GlSwapStrategy glPreferBufferSwap() const {
         return m_glPreferBufferSwap;
     }
 
+    VulkanDeviceId vulkanDevice() const {
+        return m_vulkanDevice;
+    }
+
     bool windowsBlockCompositing() const
     {
         return m_windowsBlockCompositing;
     }
 
     QStringList modifierOnlyDBusShortcut(Qt::KeyboardModifier mod) const;
 
     // setters
     void setFocusPolicy(FocusPolicy focusPolicy);
     void setNextFocusPrefersMouse(bool nextFocusPrefersMouse);
     void setClickRaise(bool clickRaise);
     void setAutoRaise(bool autoRaise);
     void setAutoRaiseInterval(int autoRaiseInterval);
     void setDelayFocusInterval(int delayFocusInterval);
     void setShadeHover(bool shadeHover);
     void setShadeHoverInterval(int shadeHoverInterval);
     void setSeparateScreenFocus(bool separateScreenFocus);
     void setPlacement(int placement);
     void setBorderSnapZone(int borderSnapZone);
     void setWindowSnapZone(int windowSnapZone);
     void setCenterSnapZone(int centerSnapZone);
     void setSnapOnlyWhenOverlapping(bool snapOnlyWhenOverlapping);
     void setRollOverDesktops(bool rollOverDesktops);
     void setFocusStealingPreventionLevel(int focusStealingPreventionLevel);
     void setLegacyFullscreenSupport(bool legacyFullscreenSupport);
     void setOperationTitlebarDblClick(WindowOperation operationTitlebarDblClick);
     void setOperationMaxButtonLeftClick(WindowOperation op);
     void setOperationMaxButtonRightClick(WindowOperation op);
     void setOperationMaxButtonMiddleClick(WindowOperation op);
     void setCommandActiveTitlebar1(MouseCommand commandActiveTitlebar1);
     void setCommandActiveTitlebar2(MouseCommand commandActiveTitlebar2);
     void setCommandActiveTitlebar3(MouseCommand commandActiveTitlebar3);
     void setCommandInactiveTitlebar1(MouseCommand commandInactiveTitlebar1);
     void setCommandInactiveTitlebar2(MouseCommand commandInactiveTitlebar2);
     void setCommandInactiveTitlebar3(MouseCommand commandInactiveTitlebar3);
     void setCommandWindow1(MouseCommand commandWindow1);
     void setCommandWindow2(MouseCommand commandWindow2);
     void setCommandWindow3(MouseCommand commandWindow3);
     void setCommandWindowWheel(MouseCommand commandWindowWheel);
     void setCommandAll1(MouseCommand commandAll1);
     void setCommandAll2(MouseCommand commandAll2);
     void setCommandAll3(MouseCommand commandAll3);
     void setKeyCmdAllModKey(uint keyCmdAllModKey);
     void setShowGeometryTip(bool showGeometryTip);
     void setCondensedTitle(bool condensedTitle);
     void setElectricBorderMaximize(bool electricBorderMaximize);
     void setElectricBorderTiling(bool electricBorderTiling);
     void setElectricBorderCornerRatio(float electricBorderCornerRatio);
     void setBorderlessMaximizedWindows(bool borderlessMaximizedWindows);
     void setKillPingTimeout(int killPingTimeout);
     void setHideUtilityWindowsForInactive(bool hideUtilityWindowsForInactive);
     void setInactiveTabsSkipTaskbar(bool inactiveTabsSkipTaskbar);
     void setAutogroupSimilarWindows(bool autogroupSimilarWindows);
     void setAutogroupInForeground(bool autogroupInForeground);
     void setCompositingMode(int compositingMode);
     void setUseCompositing(bool useCompositing);
     void setCompositingInitialized(bool compositingInitialized);
     void setHiddenPreviews(int hiddenPreviews);
     void setGlSmoothScale(int glSmoothScale);
     void setXrenderSmoothScale(bool xrenderSmoothScale);
     void setMaxFpsInterval(qint64 maxFpsInterval);
     void setRefreshRate(uint refreshRate);
     void setVBlankTime(qint64 vBlankTime);
     void setGlStrictBinding(bool glStrictBinding);
     void setGlStrictBindingFollowsDriver(bool glStrictBindingFollowsDriver);
     void setGLCoreProfile(bool glCoreProfile);
     void setGlPreferBufferSwap(char glPreferBufferSwap);
     void setGlPlatformInterface(OpenGLPlatformInterface interface);
+    void setVulkanDevice(const VulkanDeviceId &device);
     void setWindowsBlockCompositing(bool set);
 
     // default values
     static WindowOperation defaultOperationTitlebarDblClick() {
         return MaximizeOp;
     }
     static WindowOperation defaultOperationMaxButtonLeftClick() {
         return MaximizeOp;
     }
     static WindowOperation defaultOperationMaxButtonRightClick() {
         return HMaximizeOp;
     }
     static WindowOperation defaultOperationMaxButtonMiddleClick() {
         return VMaximizeOp;
     }
     static MouseCommand defaultCommandActiveTitlebar1() {
         return MouseRaise;
     }
     static MouseCommand defaultCommandActiveTitlebar2() {
         return MouseDragTab;
     }
     static MouseCommand defaultCommandActiveTitlebar3() {
         return MouseOperationsMenu;
     }
     static MouseCommand defaultCommandInactiveTitlebar1() {
         return MouseActivateAndRaise;
     }
     static MouseCommand defaultCommandInactiveTitlebar2() {
         return MouseDragTab;
     }
     static MouseCommand defaultCommandInactiveTitlebar3() {
         return MouseOperationsMenu;
     }
     static MouseCommand defaultCommandWindow1() {
         return MouseActivateRaiseAndPassClick;
     }
     static MouseCommand defaultCommandWindow2() {
         return MouseActivateAndPassClick;
     }
     static MouseCommand defaultCommandWindow3() {
         return MouseActivateAndPassClick;
     }
     static MouseCommand defaultCommandWindowWheel() {
         return MouseNothing;
     }
     static MouseCommand defaultCommandAll1() {
         return MouseUnrestrictedMove;
     }
     static MouseCommand defaultCommandAll2() {
         return MouseToggleRaiseAndLower;
     }
     static MouseCommand defaultCommandAll3() {
         return MouseUnrestrictedResize;
     }
     static MouseWheelCommand defaultCommandTitlebarWheel() {
         return MouseWheelChangeCurrentTab;
     }
     static MouseWheelCommand defaultCommandAllWheel() {
         return MouseWheelNothing;
     }
     static uint defaultKeyCmdAllModKey() {
         return Qt::Key_Alt;
     }
     static bool defaultAutogroupInForeground() {
         return true;
     }
     static CompositingType defaultCompositingMode() {
         return OpenGLCompositing;
     }
     static bool defaultUseCompositing() {
         return true;
     }
     static bool defaultCompositingInitialized() {
         return false;
     }
     static HiddenPreviews defaultHiddenPreviews() {
         return HiddenPreviewsShown;
     }
     static int defaultGlSmoothScale() {
         return 2;
     }
     static bool defaultXrenderSmoothScale() {
         return false;
     }
     static qint64 defaultMaxFpsInterval() {
         return (1 * 1000 * 1000 * 1000) /60.0; // nanoseconds / Hz
     }
     static int defaultMaxFps() {
         return 60;
     }
     static uint defaultRefreshRate() {
         return 0;
     }
     static uint defaultVBlankTime() {
         return 6000; // 6ms
     }
     static bool defaultGlStrictBinding() {
         return true;
     }
     static bool defaultGlStrictBindingFollowsDriver() {
         return true;
     }
     static bool defaultGLCoreProfile() {
         return false;
     }
     static GlSwapStrategy defaultGlPreferBufferSwap() {
         return AutoSwapStrategy;
     }
+    static VulkanDeviceId defaultVulkanDevice() {
+        return VulkanDeviceId(0, 0, 0);
+    }
     static OpenGLPlatformInterface defaultGlPlatformInterface() {
         return kwinApp()->shouldUseWaylandForCompositing() ? EglPlatformInterface : GlxPlatformInterface;
     };
     static int defaultAnimationSpeed() {
         return 3;
     }
 
     /**
      * Performs loading all settings except compositing related.
      **/
     void loadConfig();
     /**
      * Performs loading of compositing settings which do not depend on OpenGL.
      **/
     bool loadCompositingConfig(bool force);
     void reparseConfiguration();
 
     static int currentRefreshRate();
 
     //----------------------
 Q_SIGNALS:
     // for properties
     void focusPolicyChanged();
     void focusPolicyIsResonableChanged();
     void nextFocusPrefersMouseChanged();
     void clickRaiseChanged();
     void autoRaiseChanged();
     void autoRaiseIntervalChanged();
     void delayFocusIntervalChanged();
     void shadeHoverChanged();
     void shadeHoverIntervalChanged();
     void separateScreenFocusChanged(bool);
     void placementChanged();
     void borderSnapZoneChanged();
     void windowSnapZoneChanged();
     void centerSnapZoneChanged();
     void snapOnlyWhenOverlappingChanged();
     void rollOverDesktopsChanged(bool enabled);
     void focusStealingPreventionLevelChanged();
     void legacyFullscreenSupportChanged();
     void operationTitlebarDblClickChanged();
     void operationMaxButtonLeftClickChanged();
     void operationMaxButtonRightClickChanged();
     void operationMaxButtonMiddleClickChanged();
     void commandActiveTitlebar1Changed();
     void commandActiveTitlebar2Changed();
     void commandActiveTitlebar3Changed();
     void commandInactiveTitlebar1Changed();
     void commandInactiveTitlebar2Changed();
     void commandInactiveTitlebar3Changed();
     void commandWindow1Changed();
     void commandWindow2Changed();
     void commandWindow3Changed();
     void commandWindowWheelChanged();
     void commandAll1Changed();
     void commandAll2Changed();
     void commandAll3Changed();
     void keyCmdAllModKeyChanged();
     void showGeometryTipChanged();
     void condensedTitleChanged();
     void electricBorderMaximizeChanged();
     void electricBorderTilingChanged();
     void electricBorderCornerRatioChanged();
     void borderlessMaximizedWindowsChanged();
     void killPingTimeoutChanged();
     void hideUtilityWindowsForInactiveChanged();
     void inactiveTabsSkipTaskbarChanged();
     void autogroupSimilarWindowsChanged();
     void autogroupInForegroundChanged();
     void compositingModeChanged();
     void useCompositingChanged();
     void compositingInitializedChanged();
     void hiddenPreviewsChanged();
     void glSmoothScaleChanged();
     void xrenderSmoothScaleChanged();
     void maxFpsIntervalChanged();
     void refreshRateChanged();
     void vBlankTimeChanged();
     void glStrictBindingChanged();
     void glStrictBindingFollowsDriverChanged();
     void glCoreProfileChanged();
     void glPreferBufferSwapChanged();
     void glPlatformInterfaceChanged();
+    void vulkanDeviceChanged();
     void windowsBlockCompositingChanged();
 
     void configChanged();
 
 private:
     void setElectricBorders(int borders);
     void syncFromKcfgc();
     QScopedPointer<Settings> m_settings;
     FocusPolicy m_focusPolicy;
     bool m_nextFocusPrefersMouse;
     bool m_clickRaise;
     bool m_autoRaise;
     int m_autoRaiseInterval;
     int m_delayFocusInterval;
     bool m_shadeHover;
     int m_shadeHoverInterval;
     bool m_separateScreenFocus;
     Placement::Policy m_placement;
     int m_borderSnapZone;
     int m_windowSnapZone;
     int m_centerSnapZone;
     bool m_snapOnlyWhenOverlapping;
     bool m_rollOverDesktops;
     int m_focusStealingPreventionLevel;
     bool m_legacyFullscreenSupport;
     int m_killPingTimeout;
     bool m_hideUtilityWindowsForInactive;
     bool m_inactiveTabsSkipTaskbar;
     bool m_autogroupSimilarWindows;
     bool m_autogroupInForeground;
 
     CompositingType m_compositingMode;
     bool m_useCompositing;
     bool m_compositingInitialized;
     HiddenPreviews m_hiddenPreviews;
     int m_glSmoothScale;
     bool m_xrenderSmoothScale;
     qint64 m_maxFpsInterval;
     // Settings that should be auto-detected
     uint m_refreshRate;
     qint64 m_vBlankTime;
     bool m_glStrictBinding;
     bool m_glStrictBindingFollowsDriver;
     bool m_glCoreProfile;
     GlSwapStrategy m_glPreferBufferSwap;
     OpenGLPlatformInterface m_glPlatformInterface;
+    VulkanDeviceId m_vulkanDevice;
     bool m_windowsBlockCompositing;
 
     WindowOperation OpTitlebarDblClick;
     WindowOperation opMaxButtonRightClick = defaultOperationMaxButtonRightClick();
     WindowOperation opMaxButtonMiddleClick = defaultOperationMaxButtonMiddleClick();
     WindowOperation opMaxButtonLeftClick = defaultOperationMaxButtonRightClick();
 
     // mouse bindings
     MouseCommand CmdActiveTitlebar1;
     MouseCommand CmdActiveTitlebar2;
     MouseCommand CmdActiveTitlebar3;
     MouseCommand CmdInactiveTitlebar1;
     MouseCommand CmdInactiveTitlebar2;
     MouseCommand CmdInactiveTitlebar3;
     MouseWheelCommand CmdTitlebarWheel;
     MouseCommand CmdWindow1;
     MouseCommand CmdWindow2;
     MouseCommand CmdWindow3;
     MouseCommand CmdWindowWheel;
     MouseCommand CmdAll1;
     MouseCommand CmdAll2;
     MouseCommand CmdAll3;
     MouseWheelCommand CmdAllWheel;
     uint CmdAllModKey;
 
     bool electric_border_maximize;
     bool electric_border_tiling;
     float electric_border_corner_ratio;
     bool borderless_maximized_windows;
     bool show_geometry_tip;
     bool condensed_title;
     int animationSpeed; // 0 - instant, 5 - very slow
 
     QHash<Qt::KeyboardModifier, QStringList> m_modifierOnlyShortcuts;
 
     MouseCommand wheelToMouseCommand(MouseWheelCommand com, int delta) const;
 };
 
 extern KWIN_EXPORT Options* options;
 
 } // namespace
 
 Q_DECLARE_METATYPE(KWin::Options::WindowOperation)
 Q_DECLARE_METATYPE(KWin::OpenGLPlatformInterface)
 
 #endif