1 files changed, 13 insertions, 0 deletions
diff --git a/src/plugins/platforms/xcb/qxcbwindow.cpp b/src/plugins/platforms/xcb/qxcbwindow.cpp
index e15c22b690..16e579b79f 100644
--- a/src/plugins/platforms/xcb/qxcbwindow.cpp
+++ b/src/plugins/platforms/xcb/qxcbwindow.cpp
@@ -410,6 +410,19 @@ void QXcbWindow::create()
             qWarning() << "Failed to use requested visual id.";
     }
 
+    if (parent()) {
+        // When using a Vulkan QWindow via QWidget::createWindowContainer() we
+        // must make sure the visuals are compatible. Now, the parent will be
+        // of RasterGLSurface which typically chooses a GLX/EGL compatible
+        // visual which may not be what the Vulkan window would choose.
+        // Therefore, take the parent's visual.
+        if (window()->surfaceType() == QSurface::VulkanSurface
+                && parent()->window()->surfaceType() != QSurface::VulkanSurface)
+        {
+            visual = platformScreen->visualForId(static_cast<QXcbWindow *>(parent())->visualId());
+        }
+    }
+
     if (!visual)
         visual = createVisual();