[Qt-interest] beginNativePainting

[Samuel Rødal]

John Clayton wrote:
> Hi All
> 
> *Must* I use the beginNativePainting() method if I intend to use my  
> own OpenGL commands to render content within the  
> QGraphicsItem::paint() method?
> 
> Thanks
> --
> John Clayton
> Skype: johncclayton

It's heavily recommended, otherwise the paint engine won't be aware that 
the GL state has changed behind its back on the next painter call, and 
it won't have a chance to prepare a 'clean' state for you to issue GL 
commands in.

--
Samuel