composite manager thoughts

[Jim Gettys]

Yes, but you can set an upper limit on the rate of updating,
going to a time based updating model, rather than going at a
rate faster than human perception and using more machine resources
than necessary.

There will, in effect, be a round trip involved, but you can
rate limit the round trips this way.
                         - Jim

On Sat, 2003-12-27 at 15:53, Keith Packard wrote:
> Around 6 o'clock on Dec 27, Jim Gettys wrote:
> 
> > I'm wondering if an X synchronization extension based 
> > implementation, even without vertical retrace, is a useful
> > alternative to use of XSync.
> 
> I'm not sure that solves the same problem; you really need to respond to 
> precisely the set of updates which have occured since the last painting, 
> and XSync ensures you do exactly that.
> 
> > It may be possible to do a single WM and compositor using
> > two connections, as well....
> 
> Yes, that occured to me as well, but you have most of the same 
> synchronization issues within a single program as between two, so we'll 
> have to solve them regardless.
> 
> -keith
-- 
Jim Gettys <Jim.Gettys@hp.com>
HP Labs, Cambridge Research Laboratory