QPainter + QQuickFramebufferObject

[Tppo]

I need to use QPainter for making drawings in my application. And the result should be showed in QtQuick.
At this moment I'm using QQuickPaintedItem to reach this task. But it works very slow.

I found this solution to draw in FBO using QPainter:
https://dangelog.wordpress.com/2013/02/10/using-fbos-instead-of-pbuffers-in-qt-5-2/

Now can somebody provide me with a simple example on how to combine this approach with QQuickFramebufferObject, please?