[Bug 110781] Radeon: heavy r300 performance drop regression between 11.x and 19.x

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=110781

--- Comment #65 from Rui Salvaterra <rsalvaterra at gmail.com> ---
(In reply to Richard Thier from comment #64)
> Rui!
> 
> Btw I am also running your patch already too and did not see much problems
> so far, but many of the stuff I am running was DX7 and DX8 level in graphics
> settings so I do not know how many times I actually tried your code
> literally, but it is built into my mesa too.

Good to know! It worked fine here, too.

> Also Mount&Blade is working well too now! It was misconfigured in the new
> wine to have CSMT and that was über-slow on my single core machine leading
> to starvation and a lot of overhead that was even visible in the perf output.
> 
> So far everything works at full speed now!

Great!

> I am thinking about maybe trying to figure out HyperZ on r300. According to
> the feature matrix it is untested and I see bad glitches but elevated
> performance. I already made some changes to try it...
> 
> But if I continue with hyperZ stuff likely it will be another bug report,
> just for sake of transparency about knowing this one is pretty much seems
> solved completely...

Yes, I think it's a good idea to open a new bug.
By the way, I have a vague memory of HiZ on the R4xx being exclusive (i.e.,
only the first app to use the Z-buffer gets HiZ), but I could be completely
wrong.

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