recent i965 bugs

[Eric Anholt]

On Mon, 2008-01-14 at 20:22 -0500, Richard Goedeken wrote:
> > And, yes, please do see if you can find the source of the alpha blending
> > problem.
> 
> I did another test series with git-bisect, and the source of this problem was 
> identified as:
> 
> b35811e1b38e8fd454f369aefc0b3b3c50ecb8bc is first bad commit
> Date:   Wed Jan 2 13:20:00 2008 -0800
> [965] Convert CC unit to use a cache key instead of brw_cache_data.
> 
> It may be related to the Z-buffer rather than alpha blending.  I went back to 
> the tip and reverted the 2 commits with bugs.  This one had some conflicts, 
> which I resolved in the obvious way without really knowing the code.  The 
> resulting drivers did not exhibit the 2 bugs that I just reported, but there was 
> an obvious Z-buffer problem visible -- things were painted in the wrong order.

Thanks for bisecting.  It pointed me to the bug in just a minute, and
the fix is upstream now (93ec89e565cbdc9dab010d1a1d259f2348ac7459).

-- 
Eric Anholt                             anholt at FreeBSD.org
eric at anholt.net                         eric.anholt at intel.com

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