Re: [Qemu-devel] [PATCH] opengl rendering in the sdl window

["Daniel P. Berrange" <berrange@redhat.com>]

On Sat, Sep 06, 2008 at 10:07:10PM -0500, Anthony Liguori wrote:
> Daniel P. Berrange wrote:
> >On Wed, Sep 03, 2008 at 10:00:31PM -0500, Anthony Liguori wrote:
> >  
> >Actually I'm not so sure this was a good idea in the end. I'm seriously
> >considering re-writing the GTK-VNC stuff to use Cairo, which in turn
> >can use 2-d hardware acceleration primitives - it really doesn't need
> >the full 3-d acceleration stack just for scaling. 
> >  
> 
> I tried to originally write the GTK-VNC scaling stuff in Cairo.  Could 
> not get it to perform well at all.  I'd be really interested if you had 
> better luck with it.

I've just posted patches to the GTK-VNC devel list demonstrating use of
Cairo for all rendering. I can't notice any serious drop in performance
when enabling scaling with Cairo. If you confirm my tests, it'd be worth
evaluating Cairo as an alternative to OpenGL in QEMU too.

Regards,
Daniel
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