diff --git a/src/widgets/kernel/qopenglwidget.cpp b/src/widgets/kernel/qopenglwidget.cpp index c96b6812c41..53dc88bd2c7 100644 --- a/src/widgets/kernel/qopenglwidget.cpp +++ b/src/widgets/kernel/qopenglwidget.cpp @@ -756,6 +756,7 @@ void QOpenGLWidgetPrivate::recreateFbo() fbo->bind(); context->functions()->glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT | GL_STENCIL_BUFFER_BIT); + flushPending = true; // Make sure the FBO is initialized before use paintDevice->setSize(deviceSize); paintDevice->setDevicePixelRatio(q->devicePixelRatioF());