Update QOpenGLWidget paintDevice devicePixelRatio when recreating fbo

The QOpenGLWidget's paintDevice needs to update devicePixelRatio when
changing screens.

Change-Id: Iec6e7157f22ff99e04f81347cbbf70f3fc3ff424
Reviewed-by: Laszlo Agocs <laszlo.agocs@digia.com>

1 files changed, 1 insertions, 0 deletions

diff --git a/src/widgets/kernel/qopenglwidget.cpp b/src/widgets/kernel/qopenglwidget.cpp
index 4eee4e526d..bcc3e3592b 100644
--- a/src/widgets/kernel/qopenglwidget.cpp
+++ b/src/widgets/kernel/qopenglwidget.cpp
@@ -558,6 +558,7 @@ void QOpenGLWidgetPrivate::recreateFbo()
     fbo->bind();
 
     paintDevice->setSize(deviceSize);
+    paintDevice->setDevicePixelRatio(q->devicePixelRatio());
 
     emit q->resized();
 }