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

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

--- Comment #14 from Marek Olšák <maraeo@xxxxxxxxx> 2012-01-05 16:18:14 PST ---
Well maybe not, I am not sure.

I recall there was another bug with HiZ, which could be triggered by changing
the depth function. The workaround was to flush the zbuffer cache when the
depth function was changed. However flushing the cache is a very costly
operation, so it wasn't even an option.

I just gave up after that, because it made no ******* sense. Zbuffer cache
should have nothing to with HiZ.

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