[Bug 18397] Small pixmap corruption [EXA enabled]

[bugzilla-daemon at freedesktop.org]

http://bugs.freedesktop.org/show_bug.cgi?id=18397





--- Comment #41 from Alex Deucher <agd5f at yahoo.com>  2009-02-10 14:02:05 PST ---
(In reply to comment #39)
> Now you're on the right direction. My infamous checkbox-test in Firefox/GMail 
> shows there is improvement (it's better than I've ever seen it before with
> EXA). There are still rendering errors in a few check-boxes, but they are fewer
> now. I see idle-looping going on, should I try to increase the number of
> iterations before giving up and returning in RADEONWaitforIdlePoll() ? Or
> perhaps that does not make sense and is unwise .. Obviously racy little slime
> bug this. I noticed you put back the drm busy waiting code in the latest patch
> (in the DFS func), that at least seemed to help. Also, I see the only XXX: in
> radeon_exa_funcs.c is located above that part :).
> 

I think it's just adding latency.  We really need to wait on a timestamp
written by the CP after rendering is done to be sure the hw is done and caches
are flushed.


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