How to render a QOpenGLFramebufferObject to QQuickItem

Question

I am using Qt 5.6 & above. I have a QQuickItem sub-class which is placed in my main.qml

class MyQQuickItem : public QQuickItem {

}

In my main.cpp I register MyQQuickItem using qmlRegisterUncreatableType. It displays fine on the app main UI screen.

Now, I have a valid texture which is QOpenGLFramebufferObject. I just want to display this QOpenGLFramebufferObject on the UI of MyQQuickItem.

Probably I should call update on MyQQuickItem somehow providing this texture to it ? How can do this?