[Bug 42117] R200 driver performance, UMS, all mesa versions from 7.6

[bugzilla-daemon@freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=42117

--- Comment #4 from Roland Scheidegger <sroland@vmware.com> 2011-10-24 11:30:14 PDT ---
Some performance difference is expected due to kms not supporting tiling on
r200, though I would expect a 2x difference only if you also enabled hyperz
manually.
That said, if performance jumps a lot higher with lower texture settings, this
looks like a problem with bo placement/migration, the old code was simple and
terrible in some cases (could easily get texture thrashing) whereas the new
code is different (but still not smart enough). In any case, if you don't have
libtxc installed try that as openarena can use it and hence textures will use
much less vram. If you have some compositing manager running try disabling it
as it will also use more memory. Though if you have some terribly
memory-constrained chip nothing might help much (should really have at least
64MB vram).

As for the ums problem, it looks like the driver is hitting a software
fallback. RADEON_DEBUG=fall might tell you why - not that there's any chance it
will get fixed...

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