Subject: Re: [linux-audio-dev] Audio-related widgets with Qt ?
From: Tommi Ilmonen (tilmonen_AT_cc.hut.fi)
Date: Tue Sep 18 2001 - 11:31:09 EEST
Hi.
> --------
> A quick note:
>
> >Or is the Canvas so clever that is uses genuine double buffering
> >(bypassing the usual socket transmission) ?
>
> XFree86 supports the "SHM" extension. Ergo, when running on the same
> machine as the display, there is no socket transmission of data. The
> Xlib routines draw directly into the server's framebuffer image via
> shm. The vast majority of audio programs will run this way, I would
> imagine.
Ok. Wasn't well aware of that. I usually run the apps accross a network so
there is no way an app could avoid the network traffic. In local mode I
switch to double-buffering which probably has the results as you
describe (at least with XF86).
Tommi.
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