https://bugs.freedesktop.org/show_bug.cgi?id=37724
--- Comment #12 from Pavel Ondračka pavel.ondracka@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.