[Bug 110897] HyperZ is broken for r300 (bad z for some micro and macrotiles?)

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110897

--- Comment #16 from Richard Thier <u9vata at gmail.com> ---
Btw I now have no problems at all... This is weird... all I did was to remove
my printfs so that code is actually stock mesa and I both see the speed gain
and there is no problems whatsoever...

But I rebooted and started glxgears right away with HYPERZ enabled and no other
programs ever. I could then start anything: browser, tuxracer, ...

I have tried a shutdown of my machine, then start glxgears without HYPERZ and
then start with and it still worked...

But now I am compiling with "-O0" as I thought it is a good idea if I plan to
use gdb.

I am still not sure what fixes it: is it just the "-O0" or me not starting the
browser first but glxgears...

TL;DR: If you see this, there might ba a quick hack to completely turn off the
machine and turn it on maybe and not start anything that uses the GPU just the
3D app that you want to have HYPERZ should maybe start first - or the
workaround is to compile without any optimization maybe... These are the two
things I did and now magically "it just works"... I have no idea...

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