[PATCH] composite: only update window contents when using automatic redirection

[Keith Packard]

On Tue, 7 Sep 2010 12:48:32 -0700, Jesse Barnes <jbarnes at virtuousgeek.org> wrote:

> Brian pointed this out awhile back but the fix was never merged.  So
> here's a real patch.  Would be nice to get into 1.9.x as well if it
> proves ok in master.

Looks like there are additional optimizations available here -- we're
doing a full tree traversal per block handler whenever anything is
damaged. Can the 'damage' boolean in both screen and window be
restricted to Automatic update mode?

-- 
keith.packard at intel.com
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