diff --git a/client.cpp b/client.cpp
--- a/client.cpp
+++ b/client.cpp
@@ -645,7 +645,7 @@
         }
         if (noBorder()) {
             xcb_shape_combine(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, XCB_SHAPE_SK_BOUNDING,
-                              frameId(), clientPos().x(), clientPos().y(), window());
+                              frameId(), Xcb::scX(clientPos().x()), Xcb::scX(clientPos().y()), window());
         }
     } else if (app_noborder) {
         xcb_shape_mask(connection(), XCB_SHAPE_SO_SET, XCB_SHAPE_SK_BOUNDING, frameId(), 0, 0, XCB_PIXMAP_NONE);
@@ -694,9 +694,9 @@
         xcb_shape_combine(c, XCB_SHAPE_SO_SET, XCB_SHAPE_SK_INPUT, XCB_SHAPE_SK_BOUNDING,
                           shape_helper_window, 0, 0, frameId());
         xcb_shape_combine(c, XCB_SHAPE_SO_SUBTRACT, XCB_SHAPE_SK_INPUT, XCB_SHAPE_SK_BOUNDING,
-                          shape_helper_window, clientPos().x(), clientPos().y(), window());
+                          shape_helper_window, Xcb::scX(clientPos().x()), Xcb::scX(clientPos().y()), window());
         xcb_shape_combine(c, XCB_SHAPE_SO_UNION, XCB_SHAPE_SK_INPUT, XCB_SHAPE_SK_INPUT,
-                          shape_helper_window, clientPos().x(), clientPos().y(), window());
+                          shape_helper_window, Xcb::scX(clientPos().x()), Xcb::scX(clientPos().y()), window());
         xcb_shape_combine(c, XCB_SHAPE_SO_SET, XCB_SHAPE_SK_INPUT, XCB_SHAPE_SK_INPUT,
                           frameId(), 0, 0, shape_helper_window);
     }
diff --git a/events.cpp b/events.cpp
--- a/events.cpp
+++ b/events.cpp
@@ -691,7 +691,7 @@
     }
 
     if (e->value_mask & (XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_HEIGHT | XCB_CONFIG_WINDOW_WIDTH))
-        configureRequest(e->value_mask, e->x, e->y, e->width, e->height, 0, false);
+        configureRequest(e->value_mask, Xcb::scK(e->x), Xcb::scK(e->y), Xcb::scK(e->width), Xcb::scK(e->height), 0, false);
 
     if (e->value_mask & XCB_CONFIG_WINDOW_STACK_MODE)
         restackWindow(e->sibling, e->stack_mode, NET::FromApplication, userTime(), false);
@@ -1066,6 +1066,11 @@
 // return value matters only when filtering events before decoration gets them
 bool Client::motionNotifyEvent(xcb_window_t w, int state, int x, int y, int x_root, int y_root)
 {
+    x = Xcb::scK(x);
+    y = Xcb::scK(y);
+    x_root = Xcb::scK(x_root);
+    y_root = Xcb::scK(y_root);
+
     if (w == frameId() && isDecorated() && !isMinimized()) {
         // TODO Mouse move event dependent on state
         QHoverEvent event(QEvent::HoverMove, QPointF(x, y), QPointF(x, y));
@@ -1296,7 +1301,7 @@
 {
     if (effects)
         static_cast<EffectsHandlerImpl*>(effects)->checkInputWindowStacking(); // keep them on top
-    QRect newgeom(e->x, e->y, e->width, e->height);
+    const QRect newgeom = Xcb::scK(QRect(e->x, e->y, e->width, e->height));
     if (newgeom != geom) {
         addWorkspaceRepaint(visibleRect());  // damage old area
         QRect old = geom;
diff --git a/geometry.cpp b/geometry.cpp
--- a/geometry.cpp
+++ b/geometry.cpp
@@ -73,8 +73,8 @@
     QRect geom = screens()->geometry();
     if (rootInfo()) {
         NETSize desktop_geometry;
-        desktop_geometry.width = geom.width();
-        desktop_geometry.height = geom.height();
+        desktop_geometry.width = Xcb::scX(geom.width());
+        desktop_geometry.height = Xcb::scX(geom.height());
         rootInfo()->setDesktopGeometry(desktop_geometry);
     }
 
@@ -310,10 +310,11 @@
         if (rootInfo()) {
             NETRect r;
             for (int i = 1; i <= numberOfDesktops; i++) {
-                r.pos.x = workarea[ i ].x();
-                r.pos.y = workarea[ i ].y();
-                r.size.width = workarea[ i ].width();
-                r.size.height = workarea[ i ].height();
+                const QRect xWorkarea = Xcb::scX(workarea[i]);
+                r.pos.x = xWorkarea.x();
+                r.pos.y = xWorkarea.y();
+                r.size.width = xWorkarea.width();
+                r.size.height = xWorkarea.height();
                 rootInfo()->setWorkArea(i, r);
             }
         }
@@ -898,7 +899,7 @@
         // left and top needed due to narrowing conversations restrictions in C++11
         const uint32_t left = frame.left;
         const uint32_t top = frame.top;
-        const uint32_t values[] = { geometry->x - left, geometry->y - top };
+        const uint32_t values[] = { Xcb::scX(geometry->x - left), Xcb::scX(geometry->y - top) };
         xcb_configure_window(connection(), w, XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y, values);
     }
 }
@@ -1573,10 +1574,10 @@
     c.response_type = XCB_CONFIGURE_NOTIFY;
     c.event = window();
     c.window = window();
-    c.x = x() + clientPos().x();
-    c.y = y() + clientPos().y();
-    c.width = clientSize().width();
-    c.height = clientSize().height();
+    c.x = Xcb::scX(x() + clientPos().x());
+    c.y = Xcb::scX(y() + clientPos().y());
+    c.width = Xcb::scX(clientSize().width());
+    c.height = Xcb::scX(clientSize().height());
     c.border_width = 0;
     c.above_sibling = XCB_WINDOW_NONE;
     c.override_redirect = 0;
@@ -2582,7 +2583,7 @@
     // something with Enter/LeaveNotify events, looks like XFree performance problem or something *shrug*
     // (https://lists.kde.org/?t=107302193400001&r=1&w=2)
     QRect r = workspace()->clientArea(FullArea, this);
-    m_moveResizeGrabWindow.create(r, XCB_WINDOW_CLASS_INPUT_ONLY, 0, nullptr, rootWindow());
+    m_moveResizeGrabWindow.create(Xcb::scX(r), XCB_WINDOW_CLASS_INPUT_ONLY, 0, nullptr, rootWindow());
     m_moveResizeGrabWindow.map();
     m_moveResizeGrabWindow.raise();
     updateXTime();
diff --git a/main.h b/main.h
--- a/main.h
+++ b/main.h
@@ -170,6 +170,16 @@
         return m_connection;
     }
 
+    /**
+     * @returns the X11 global scale factor
+     **/
+    int x11Scale() const {
+        return m_x11Scale;
+    }
+    virtual void setX11Scale(int scale) {
+        Q_UNUSED(scale)
+    }
+
 #ifdef KWIN_BUILD_ACTIVITIES
     bool usesKActivities() const {
         return m_useKActivities;
@@ -239,6 +249,7 @@
 protected:
     QString m_originalSessionKey;
     static int crashes;
+    int m_x11Scale = 1;
 
 private Q_SLOTS:
     void resetCrashesCount();
diff --git a/main_wayland.h b/main_wayland.h
--- a/main_wayland.h
+++ b/main_wayland.h
@@ -56,6 +56,8 @@
         return m_environment;
     }
 
+    void setX11Scale(int scale) override;
+
 protected:
     void performStartup() override;
 
diff --git a/main_wayland.cpp b/main_wayland.cpp
--- a/main_wayland.cpp
+++ b/main_wayland.cpp
@@ -25,6 +25,7 @@
 // kwin
 #include "platform.h"
 #include "effects.h"
+#include "screens.h"
 #include "tabletmodemanager.h"
 #include "wayland_server.h"
 #include "xwl/xwayland.h"
@@ -145,6 +146,14 @@
     destroyCompositor();
 }
 
+void ApplicationWayland::setX11Scale(int scale) {
+    // TODO: change this to actual release number
+    if (!m_xwayland || m_xwayland->releaseNumber() < 12099000) {
+        return;
+    }
+    m_x11Scale = scale;
+}
+
 void ApplicationWayland::performStartup()
 {
     if (m_startXWayland) {
diff --git a/netinfo.cpp b/netinfo.cpp
--- a/netinfo.cpp
+++ b/netinfo.cpp
@@ -26,6 +26,7 @@
 #include "rootinfo_filter.h"
 #include "virtualdesktops.h"
 #include "workspace.h"
+#include "xcbutils.h"
 // Qt
 #include <QDebug>
 
@@ -209,15 +210,16 @@
     Client* c = Workspace::self()->findClient(Predicate::WindowMatch, w);
     if (c) {
         updateXTime(); // otherwise grabbing may have old timestamp - this message should include timestamp
-        c->NETMoveResize(x_root, y_root, (Direction)direction);
+        c->NETMoveResize(Xcb::scK(x_root), Xcb::scK(y_root), (Direction)direction);
     }
 }
 
 void RootInfo::moveResizeWindow(xcb_window_t w, int flags, int x, int y, int width, int height)
 {
     Client* c = Workspace::self()->findClient(Predicate::WindowMatch, w);
+    const QRect geo = Xcb::scK(QRect(x, y, width, height));
     if (c)
-        c->NETMoveResizeWindow(flags, x, y, width, height);
+        c->NETMoveResizeWindow(flags, geo.x(), geo.y(), geo.width(), geo.height());
 }
 
 void RootInfo::gotPing(xcb_window_t w, xcb_timestamp_t timestamp)
diff --git a/platformsupport/scenes/opengl/abstract_egl_backend.cpp b/platformsupport/scenes/opengl/abstract_egl_backend.cpp
--- a/platformsupport/scenes/opengl/abstract_egl_backend.cpp
+++ b/platformsupport/scenes/opengl/abstract_egl_backend.cpp
@@ -328,6 +328,7 @@
     , m_image(EGL_NO_IMAGE_KHR)
 {
     m_target = GL_TEXTURE_2D;
+    m_canUseMipmaps = true;
 }
 
 AbstractEglTexture::~AbstractEglTexture()
diff --git a/plugins/scenes/opengl/scene_opengl.cpp b/plugins/scenes/opengl/scene_opengl.cpp
--- a/plugins/scenes/opengl/scene_opengl.cpp
+++ b/plugins/scenes/opengl/scene_opengl.cpp
@@ -1178,7 +1178,6 @@
             filter = ImageFilterGood;
         else
             filter = ImageFilterFast;
-
         s_frameTexture->setFilter(filter == ImageFilterGood ? GL_LINEAR : GL_NEAREST);
     }
 
diff --git a/plugins/scenes/qpainter/scene_qpainter.cpp b/plugins/scenes/qpainter/scene_qpainter.cpp
--- a/plugins/scenes/qpainter/scene_qpainter.cpp
+++ b/plugins/scenes/qpainter/scene_qpainter.cpp
@@ -274,14 +274,20 @@
     renderShadow(painter);
     renderWindowDecorations(painter);
 
+
     // render content
     const QRect target = QRect(toplevel->clientPos(), toplevel->clientSize());
-    QSize srcSize = pixmap->image().size();
-    if (pixmap->surface() && pixmap->surface()->scale() == 1 && srcSize != toplevel->clientSize()) {
+
+    QRect src;
+    if (qobject_cast<Client*>(toplevel)) {
         // special case for XWayland windows
-        srcSize = toplevel->clientSize();
+        const auto scale = pixmap->surface()->scale();
+        src = QRect((toplevel->clientPos() + toplevel->clientContentPos()) * scale, toplevel->clientSize() * scale);
+        painter->setRenderHint(QPainter::SmoothPixmapTransform);
+    } else {
+        src = QRect(toplevel->clientPos() + toplevel->clientContentPos(), pixmap->image().size());
     }
-    const QRect src = QRect(toplevel->clientPos() + toplevel->clientContentPos(), srcSize);
+
     painter->drawImage(target, pixmap->image(), src);
 
     // render subsurfaces
diff --git a/scene.cpp b/scene.cpp
--- a/scene.cpp
+++ b/scene.cpp
@@ -757,8 +757,8 @@
                 for (int i = 0;
                         i < xcb_shape_get_rectangles_rectangles_length(reply.data());
                         ++i)
-                    shape_region += QRegion(rects[ i ].x, rects[ i ].y,
-                                            rects[ i ].width, rects[ i ].height);
+                    shape_region += QRegion(Xcb::scK(rects[ i ].x), Xcb::scK(rects[ i ].y),
+                                            Xcb::scK(rects[ i ].width), Xcb::scK(rects[ i ].height));
                 // make sure the shape is sane (X is async, maybe even XShape is broken)
                 shape_region &= QRegion(0, 0, width(), height());
             } else
diff --git a/screens.cpp b/screens.cpp
--- a/screens.cpp
+++ b/screens.cpp
@@ -32,6 +32,8 @@
 #include <mock_screens.h>
 #endif
 
+#include <cmath>
+
 namespace KWin
 {
 
@@ -139,6 +141,7 @@
         m_boundingSize = bounding.size();
         emit sizeChanged();
     }
+    kwinApp()->setX11Scale(std::ceil(maxScale - 0.05));
     if (!qFuzzyCompare(m_maxScale, maxScale)) {
         m_maxScale = maxScale;
         emit maxScaleChanged();
diff --git a/xcbutils.h b/xcbutils.h
--- a/xcbutils.h
+++ b/xcbutils.h
@@ -52,6 +52,37 @@
 static void lowerWindow(xcb_window_t window);
 static void selectInput(xcb_window_t window, uint32_t events);
 
+template <typename T>
+static T scX(T arg)
+{
+    return arg * kwinApp()->x11Scale();
+}
+
+template <typename T>
+static T scK(T arg)
+{
+    auto ret = arg / (double)kwinApp()->x11Scale() + 0.5;
+    T ret2 = ret;
+    return ret2;
+}
+
+template <>
+QSize scK<QSize>(QSize arg)
+{
+    return QSize(scK(arg.width()), scK(arg.height()));
+}
+
+template <>
+QRect scX<QRect>(QRect arg)
+{
+    return QRect(scX(arg.x()), scX(arg.y()), scX(arg.width()), scX(arg.height()));
+}
+template <>
+QRect scK<QRect>(QRect arg)
+{
+    return QRect(scK(arg.x()), scK(arg.y()), scK(arg.width()), scK(arg.height()));
+}
+
 /**
  * @brief Variadic template to wrap an xcb request.
  *
@@ -564,7 +595,7 @@
         if (!geometry) {
             return QRect();
         }
-        return QRect(geometry->x, geometry->y, geometry->width, geometry->height);
+        return scK(QRect(geometry->x, geometry->y, geometry->width, geometry->height));
     }
 };
 
@@ -919,27 +950,27 @@
         if (!hasMaxSize()) {
             return QSize(INT_MAX, INT_MAX);
         }
-        return QSize(qMax(m_sizeHints->maxWidth, 1), qMax(m_sizeHints->maxHeight, 1));
+        return scK(QSize(qMax(m_sizeHints->maxWidth, 1), qMax(m_sizeHints->maxHeight, 1)));
     }
     QSize minSize() const {
         if (!hasMinSize()) {
             // according to ICCCM 4.1.23 base size should be used as a fallback
             return baseSize();
         }
-        return QSize(m_sizeHints->minWidth, m_sizeHints->minHeight);
+        return scK(QSize(m_sizeHints->minWidth, m_sizeHints->minHeight));
     }
     QSize baseSize() const {
         // Note: not using minSize as fallback
         if (!hasBaseSize()) {
             return QSize(0, 0);
         }
-        return QSize(m_sizeHints->baseWidth, m_sizeHints->baseHeight);
+        return scK(QSize(m_sizeHints->baseWidth, m_sizeHints->baseHeight));
     }
     QSize resizeIncrements() const {
         if (!hasResizeIncrements()) {
             return QSize(1, 1);
         }
-        return QSize(qMax(m_sizeHints->widthInc, 1), qMax(m_sizeHints->heightInc, 1));
+        return scK(QSize(qMax(m_sizeHints->widthInc, 1), qMax(m_sizeHints->heightInc, 1)));
     }
     xcb_gravity_t windowGravity() const {
         if (!hasWindowGravity()) {
@@ -952,14 +983,14 @@
             return QSize(1, INT_MAX);
         }
         // prevent devision by zero
-        return QSize(m_sizeHints->minAspect[0], qMax(m_sizeHints->minAspect[1], 1));
+        return scK(QSize(m_sizeHints->minAspect[0], qMax(m_sizeHints->minAspect[1], 1)));
     }
     QSize maxAspect() const {
         if (!hasAspect()) {
             return QSize(INT_MAX, 1);
         }
         // prevent devision by zero
-        return QSize(m_sizeHints->maxAspect[0], qMax(m_sizeHints->maxAspect[1], 1));
+        return scK(QSize(m_sizeHints->maxAspect[0], qMax(m_sizeHints->maxAspect[1], 1)));
     }
 
 private:
@@ -1492,9 +1523,10 @@
 xcb_window_t Window::doCreate(const QRect &geometry, uint16_t windowClass, uint32_t mask, const uint32_t *values, xcb_window_t parent)
 {
     m_logicGeometry = geometry;
+    const QRect xGeo = scX(geometry);
     xcb_window_t w = xcb_generate_id(connection());
     xcb_create_window(connection(), XCB_COPY_FROM_PARENT, w, parent,
-                      geometry.x(), geometry.y(), geometry.width(), geometry.height(),
+                      xGeo.x(), xGeo.y(), xGeo.width(), xGeo.height(),
                       0, windowClass, XCB_COPY_FROM_PARENT, mask, values);
     return w;
 }
@@ -1521,7 +1553,7 @@
         return;
     }
     const uint16_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
-    const uint32_t values[] = { x, y, width, height };
+    const uint32_t values[] = {scX(x), scX(y), scX(width), scX(height) };
     xcb_configure_window(connection(), m_window, mask, values);
 }
 
@@ -1555,7 +1587,7 @@
         return;
     }
     const uint16_t mask = XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
-    const uint32_t values[] = { width, height };
+    const uint32_t values[] = { scX(width), scX(height) };
     xcb_configure_window(connection(), m_window, mask, values);
 }
 
@@ -1596,7 +1628,7 @@
     if (!isValid()) {
         return;
     }
-    xcb_reparent_window(connection(), m_window, parent, x, y);
+    xcb_reparent_window(connection(), m_window, parent, scX(x), scX(y));
 }
 
 inline
@@ -1623,6 +1655,7 @@
     if (!isValid()) {
         return;
     }
+    width = scX(width);
     xcb_configure_window(connection(), m_window, XCB_CONFIG_WINDOW_BORDER_WIDTH, &width);
 }
 
@@ -1693,12 +1726,13 @@
 // helper functions
 static inline void moveResizeWindow(WindowId window, const QRect &geometry)
 {
+    QRect xGeo = scX(geometry);
     const uint16_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y | XCB_CONFIG_WINDOW_WIDTH | XCB_CONFIG_WINDOW_HEIGHT;
     const uint32_t values[] = {
-        static_cast<uint32_t>(geometry.x()),
-        static_cast<uint32_t>(geometry.y()),
-        static_cast<uint32_t>(geometry.width()),
-        static_cast<uint32_t>(geometry.height())
+        static_cast<uint32_t>(xGeo.x()),
+        static_cast<uint32_t>(xGeo.y()),
+        static_cast<uint32_t>(xGeo.width()),
+        static_cast<uint32_t>(xGeo.height())
     };
     xcb_configure_window(connection(), window, mask, values);
 }
@@ -1711,7 +1745,7 @@
 static inline void moveWindow(xcb_window_t window, uint32_t x, uint32_t y)
 {
     const uint16_t mask = XCB_CONFIG_WINDOW_X | XCB_CONFIG_WINDOW_Y;
-    const uint32_t values[] = { x, y };
+    const uint32_t values[] = { scX(x), scX(y) };
     xcb_configure_window(connection(), window, mask, values);
 }
 
@@ -1723,9 +1757,10 @@
 
 static inline WindowId createInputWindow(const QRect &geometry, uint32_t mask, const uint32_t *values)
 {
+    const QRect xGeo = scX(geometry);
     WindowId window = xcb_generate_id(connection());
     xcb_create_window(connection(), 0, window, rootWindow(),
-                      geometry.x(), geometry.y(), geometry.width(), geometry.height(),
+                      xGeo.x(), xGeo.y(), xGeo.width(), xGeo.height(),
                       0, XCB_WINDOW_CLASS_INPUT_ONLY,
                       XCB_COPY_FROM_PARENT, mask, values);
     return window;
@@ -1777,11 +1812,12 @@
 
 static inline xcb_rectangle_t fromQt(const QRect &rect)
 {
+    const QRect rectSc = scX(rect);
     xcb_rectangle_t rectangle;
-    rectangle.x = rect.x();
-    rectangle.y = rect.y();
-    rectangle.width  = rect.width();
-    rectangle.height = rect.height();
+    rectangle.x = rectSc.x();
+    rectangle.y = rectSc.y();
+    rectangle.width  = rectSc.width();
+    rectangle.height = rectSc.height();
     return rectangle;
 }
 
diff --git a/xwl/xwayland.h b/xwl/xwayland.h
--- a/xwl/xwayland.h
+++ b/xwl/xwayland.h
@@ -55,6 +55,9 @@
     const xcb_query_extension_reply_t *xfixes() const {
         return m_xfixes;
     }
+    uint32_t releaseNumber() const {
+        return m_releaseNumber;
+    }
 
 Q_SIGNALS:
     void initialized();
@@ -75,6 +78,7 @@
     DataBridge *m_dataBridge = nullptr;
 
     ApplicationWaylandAbstract *m_app;
+    uint32_t m_releaseNumber = 0;
 
     Q_DISABLE_COPY(Xwayland)
 };
diff --git a/xwl/xwayland.cpp b/xwl/xwayland.cpp
--- a/xwl/xwayland.cpp
+++ b/xwl/xwayland.cpp
@@ -150,11 +150,18 @@
     env.insert("WAYLAND_SOCKET", QByteArray::number(wlfd));
     env.insert("EGL_PLATFORM", QByteArrayLiteral("DRM"));
     m_xwaylandProcess->setProcessEnvironment(env);
-    m_xwaylandProcess->setArguments({QStringLiteral("-displayfd"),
-                           QString::number(pipeFds[1]),
-                           QStringLiteral("-rootless"),
-                           QStringLiteral("-wm"),
-                           QString::number(fd)});
+
+    QStringList arguments = {QStringLiteral("-displayfd"),
+                             QString::number(pipeFds[1]),
+                             QStringLiteral("-rootless"),
+                             QStringLiteral("-wm"),
+                             QString::number(fd)};
+
+    // TODO: Make this dependent on the release number. pkgconfig?
+    arguments.append(QStringLiteral("-maxFactorRescale"));
+
+    m_xwaylandProcess->setArguments(arguments);
+
     m_xwaylandFailConnection = connect(m_xwaylandProcess, static_cast<void (QProcess::*)(QProcess::ProcessError)>(&QProcess::error), this,
         [this] (QProcess::ProcessError error) {
             if (error == QProcess::FailedToStart) {
@@ -218,6 +225,13 @@
         Q_EMIT criticalError(1);
         return;
     }
+
+    // Query the XWayland release number to decide if multi dpi support
+    // should be enabled. For that force Screens to do a size update
+    // TODO: better do this earlier when we provide the arguments for
+    //       Xwayland binary?
+    m_releaseNumber = xcb_get_setup(xcbConn)->release_number;
+
     QSocketNotifier *notifier = new QSocketNotifier(xcb_get_file_descriptor(xcbConn), QSocketNotifier::Read, this);
     auto processXcbEvents = [this, xcbConn] {
         while (auto event = xcb_poll_for_event(xcbConn)) {