composite manager thoughts

[Keith Packard]

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