[PATCH xserver] dri2: Don't send so many needless invalidate events

[Keith Packard]

On Fri,  6 May 2011 18:18:15 +0300, ville.syrjala at nokia.com wrote:
> From: Ville Syrjälä <ville.syrjala at nokia.com>
> 
> Only send invalidate events for drawables if some client has requested
> some buffers.

Merged.
   ba55402..5318694  master -> master

-- 
keith.packard at intel.com
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