diff --git a/src/backends/drm/drm_backend.cpp b/src/backends/drm/drm_backend.cpp
index fbe4bf6571..4105d73b09 100644
--- a/src/backends/drm/drm_backend.cpp
+++ b/src/backends/drm/drm_backend.cpp
@@ -62,7 +62,6 @@ DrmBackend::DrmBackend(QObject *parent)
 {
     setSupportsPointerWarping(true);
     setSupportsGammaControl(true);
-    setPerScreenRenderingEnabled(true);
     supportsOutputChanges();
 }
 
diff --git a/src/backends/fbdev/fb_backend.cpp b/src/backends/fbdev/fb_backend.cpp
index e0459e0337..3485a50876 100644
--- a/src/backends/fbdev/fb_backend.cpp
+++ b/src/backends/fbdev/fb_backend.cpp
@@ -79,7 +79,6 @@ FramebufferBackend::FramebufferBackend(QObject *parent)
     : Platform(parent)
     , m_session(Session::create(this))
 {
-    setPerScreenRenderingEnabled(true);
     setSupportsPointerWarping(true);
 }
 
diff --git a/src/backends/virtual/virtual_backend.cpp b/src/backends/virtual/virtual_backend.cpp
index f3a19b2bde..d6110247f5 100644
--- a/src/backends/virtual/virtual_backend.cpp
+++ b/src/backends/virtual/virtual_backend.cpp
@@ -164,7 +164,6 @@ VirtualBackend::VirtualBackend(QObject *parent)
     supportsOutputChanges();
     setSupportsPointerWarping(true);
     setSupportsGammaControl(true);
-    setPerScreenRenderingEnabled(true);
 }
 
 VirtualBackend::~VirtualBackend()
diff --git a/src/backends/wayland/wayland_backend.cpp b/src/backends/wayland/wayland_backend.cpp
index 96b479060c..d0ddc05250 100644
--- a/src/backends/wayland/wayland_backend.cpp
+++ b/src/backends/wayland/wayland_backend.cpp
@@ -579,7 +579,6 @@ WaylandBackend::WaylandBackend(QObject *parent)
     , m_connectionThreadObject(new ConnectionThread(nullptr))
     , m_connectionThread(nullptr)
 {
-    setPerScreenRenderingEnabled(true);
     supportsOutputChanges();
     connect(this, &WaylandBackend::connectionFailed, qApp, &QCoreApplication::quit);
 
diff --git a/src/backends/x11/standalone/x11_platform.cpp b/src/backends/x11/standalone/x11_platform.cpp
index 3d5cc48846..a4dc495522 100644
--- a/src/backends/x11/standalone/x11_platform.cpp
+++ b/src/backends/x11/standalone/x11_platform.cpp
@@ -112,7 +112,6 @@ X11StandalonePlatform::X11StandalonePlatform(QObject *parent)
     connect(m_updateOutputsTimer, &QTimer::timeout, this, &X11StandalonePlatform::updateOutputs);
 
     setSupportsGammaControl(true);
-    setPerScreenRenderingEnabled(false);
 }
 
 X11StandalonePlatform::~X11StandalonePlatform()
diff --git a/src/backends/x11/windowed/x11windowed_backend.cpp b/src/backends/x11/windowed/x11windowed_backend.cpp
index 444fb7cda3..e49fccc65b 100644
--- a/src/backends/x11/windowed/x11windowed_backend.cpp
+++ b/src/backends/x11/windowed/x11windowed_backend.cpp
@@ -164,7 +164,6 @@ X11WindowedBackend::X11WindowedBackend(QObject *parent)
     , m_session(Session::create(Session::Type::Noop, this))
 {
     setSupportsPointerWarping(true);
-    setPerScreenRenderingEnabled(true);
 }
 
 X11WindowedBackend::~X11WindowedBackend()
diff --git a/src/item.cpp b/src/item.cpp
index 74ba5b8d30..3aeb2ffaf3 100644
--- a/src/item.cpp
+++ b/src/item.cpp
@@ -257,7 +257,7 @@ void Item::scheduleRepaintInternal(const QRegion &region)
 {
     const QVector<AbstractOutput *> outputs = kwinApp()->platform()->enabledOutputs();
     const QRegion globalRegion = mapToGlobal(region);
-    if (kwinApp()->platform()->isPerScreenRenderingEnabled()) {
+    if (kwinApp()->operationMode() != Application::OperationModeX11) {
         for (const auto &output : outputs) {
             const QRegion dirtyRegion = globalRegion & output->geometry();
             if (!dirtyRegion.isEmpty()) {
@@ -277,7 +277,7 @@ void Item::scheduleFrame()
         return;
     }
     const QVector<AbstractOutput *> outputs = kwinApp()->platform()->enabledOutputs();
-    if (kwinApp()->platform()->isPerScreenRenderingEnabled()) {
+    if (kwinApp()->operationMode() != Application::OperationModeX11) {
         const QRect geometry = mapToGlobal(rect());
         for (const AbstractOutput *output : outputs) {
             if (output->geometry().intersects(geometry)) {
diff --git a/src/platform.cpp b/src/platform.cpp
index f4c9a52390..92a0470b67 100644
--- a/src/platform.cpp
+++ b/src/platform.cpp
@@ -409,16 +409,6 @@ void Platform::setReady(bool ready)
     Q_EMIT readyChanged(m_ready);
 }
 
-bool Platform::isPerScreenRenderingEnabled() const
-{
-    return m_isPerScreenRenderingEnabled;
-}
-
-void Platform::setPerScreenRenderingEnabled(bool enabled)
-{
-    m_isPerScreenRenderingEnabled = enabled;
-}
-
 AbstractOutput *Platform::createVirtualOutput(const QString &name, const QSize &size, double scale)
 {
     Q_UNUSED(name);
diff --git a/src/platform.h b/src/platform.h
index a1b32ab93a..3fcc1ed65e 100644
--- a/src/platform.h
+++ b/src/platform.h
@@ -338,11 +338,6 @@ public:
         m_selectedCompositor = type;
     }
 
-    /**
-     * Returns @c true if rendering is split per screen; otherwise returns @c false.
-     */
-    bool isPerScreenRenderingEnabled() const;
-
     virtual AbstractOutput *createVirtualOutput(const QString &name, const QSize &size, qreal scaling);
     virtual void removeVirtualOutput(AbstractOutput *output);
 
@@ -425,7 +420,6 @@ protected:
     explicit Platform(QObject *parent = nullptr);
     void repaint(const QRect &rect);
     void setReady(bool ready);
-    void setPerScreenRenderingEnabled(bool enabled);
     QSize initialWindowSize() const {
         return m_initialWindowSize;
     }
@@ -457,7 +451,6 @@ private:
     EGLContext m_globalShareContext = EGL_NO_CONTEXT;
     bool m_supportsGammaControl = false;
     bool m_supportsOutputChanges = false;
-    bool m_isPerScreenRenderingEnabled = false;
     CompositingType m_selectedCompositor = NoCompositing;
     AbstractOutput *m_primaryOutput = nullptr;
 };