diff --git a/src/plugins/platforms/cocoa/qcocoaglcontext.h b/src/plugins/platforms/cocoa/qcocoaglcontext.h
index 919f7c240bc..36546879ae4 100644
--- a/src/plugins/platforms/cocoa/qcocoaglcontext.h
+++ b/src/plugins/platforms/cocoa/qcocoaglcontext.h
@@ -29,6 +29,7 @@ public:
     void initialize() override;
 
     bool makeCurrent(QPlatformSurface *surface) override;
+    void beginFrame() override;
     void swapBuffers(QPlatformSurface *surface) override;
     void doneCurrent() override;
 
diff --git a/src/plugins/platforms/cocoa/qcocoaglcontext.mm b/src/plugins/platforms/cocoa/qcocoaglcontext.mm
index a65311175ff..bfac716b633 100644
--- a/src/plugins/platforms/cocoa/qcocoaglcontext.mm
+++ b/src/plugins/platforms/cocoa/qcocoaglcontext.mm
@@ -332,6 +332,25 @@ bool QCocoaGLContext::makeCurrent(QPlatformSurface *surface)
     return true;
 }
 
+void QCocoaGLContext::beginFrame()
+{
+    QMacAutoReleasePool pool;
+
+    Q_ASSERT(context() && context()->surface());
+    auto *surface = context()->surface()->surfaceHandle();
+    Q_ASSERT(surface);
+
+    qCDebug(lcQpaOpenGLContext) << "Beginning frame for" << this
+        << "in" << QThread::currentThread() << "for" << surface;
+
+    Q_ASSERT(surface->surface()->supportsOpenGL());
+
+    if (surface->surface()->surfaceClass() == QSurface::Window) {
+        if (m_needsUpdate.fetchAndStoreRelaxed(false))
+            update();
+    }
+}
+
 /*!
     Sets the drawable object of the NSOpenGLContext, which is the
     frame buffer that is the target of OpenGL drawing operations.