Re: performance problems double buffering to 1600x1200 window
- From: jcupitt gmail com
- To: Robert Gibbs <gibbsrc gmail com>
- Cc: gtk-list gnome org
- Subject: Re: performance problems double buffering to 1600x1200 window
- Date: Thu, 28 Jan 2010 08:08:33 +0000
2010/1/28 Robert Gibbs <gibbsrc gmail com>:
> Can anyone tell me why the built-in double buffering would yield such poor
> performance?
The built-in double buffering allocates and frees a backing buffer the
size of the expose for every expose event. I imagine your program is
spending a lot of time doing this. I suppose the gtk buffer could also
somehow not be in fast memory, giving you slow offscreen - onscreen
copies. You'd need to do some timing.
John
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