[Bug 37724] r300g with HyperZ/Z compression: occlusion queries are messed up in ut2004 (regression, bisected)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=37724

--- Comment #12 from Pavel Ondračka <pavel.ondracka at email.cz> 2012-01-05 15:54:31 PST ---
(In reply to comment #11)
> The problematic commit fixes occlusion queries for some cases, so I'm sorry but
> I can't revert it just because it breaks an optimization which is not even
> enabled by default. I can take a look at the issue and see if Z compression is
> fixable.

OK, I see revert is not an option. It still would be nice if this could be
fixed, but it's not a priority. 

BTW I did quick check of r300g bugs and did find only three about HyperZ
including this one. This doesn't seems like a large number but it may be only a
lack of testing. Is there a possibility to enable just some features on some
generations? For example there are no bug reports about hiz on r500 cards... I
could do more testing if needed, maybe some piglit runs.

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