QtOgreFramework flickering with qt 4.5

[Uwe]

In Qwt I also have heavy flickering with 4.5, when I'm doing layout relevant operations according to resize operations ( f.e. showing the size of the main window in a QLabel on the status bar ): the label is jumping to the top left position and back.

I don't have the bug number here, but AFAIR this particular problem was scheduled to be fixed in 4.5.1.

Uwe

[Angelo Moriconi]

I've just found a way to disable the backing store engine on the ogre rendering.

You have to override QWidget :: paintEngine() returning 0 in OgreWidget.h :

QPaintEngine *paintEngine() { return 0; }

QPaintEngine *paintEngine() { return 0; }

To copy to clipboard, switch view to plain text mode 

In this manner, the backing store does not handle the widget painting and the flickering disappear.
It is also seems that even the rendering performance has a big boost.

Best,

Angelo