example of Render To Texture when using QOpenGLWidget

[WalkingCat]

tried using the code from offical osgmultiplerendertargets example to implement Render To Texture https://github.com/openscenegraph/OpenSceneGraph/blob/master/examples/osgmultiplerendertargets/osgmultiplerendertargets.cpp code works fine when the app is using QGLWidget as the main viewer, but have problems when using QOpenGLWidget, I see there is problems related to FrameBufferObject stuff, can osgQt provide an semi-official way to do this ?