1 files changed, 12 insertions, 1 deletions
diff --git a/src/quick/items/qquickrendercontrol.cpp b/src/quick/items/qquickrendercontrol.cpp
index f6d4e7ed49..83b3372ed9 100644
--- a/src/quick/items/qquickrendercontrol.cpp
+++ b/src/quick/items/qquickrendercontrol.cpp
@@ -242,7 +242,18 @@ void QQuickRenderControl::initialize(QOpenGLContext *gl)
     // It cannot be done here since the surface to use may not be the
     // surface belonging to window. In fact window may not have a native
     // window/surface at all.
-    d->rc->initialize(gl);
+    QSGDefaultRenderContext *rc = qobject_cast<QSGDefaultRenderContext *>(d->rc);
+    if (rc) {
+        QSGDefaultRenderContext::InitParams params;
+        params.sampleCount = qMax(1, gl->format().samples());
+        params.openGLContext = gl;
+        params.initialSurfacePixelSize = d->window->size() * d->window->effectiveDevicePixelRatio();
+        params.maybeSurface = d->window;
+        rc->initialize(&params);
+    } else {
+        // can this happen?
+        d->rc->initialize(nullptr);
+    }
 #else
     Q_UNUSED(gl)
 #endif