[Xorg] Damage/Composite + direct rendering clients

[Soeren Sandmann]

Keith Packard <keithp at keithp.com> writes:

> As long as the compositing manager holds the server grabbed (which
> presumably locks out direct clients as well) while it updates the screen,
> there shouldn't be any tearing.  No need to drain the event queue or 
> anything else so dramatic.

What if another client has already grabbed the server for whatever
reason? Is screen updating then turned off?


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