[Nouveau] [Bug 92271] Unusably slow OpenGL performance on nouveau (GeForce 9600 GT) with X server 1.18 with rotated output

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=92271

--- Comment #25 from Adam Williamson <adamw at happyassassin.net> ---
OK, so I finally got a good test. I built a snapshot exactly at the DRI
2-by-default commit -
http://cgit.freedesktop.org/nouveau/xf86-video-nouveau/commit/?id=6296145654b78518f3299bb5887f224f0d3810fd
- and that one loads OK. And indeed it behaves as we suspected: it works at
full speed by default, if I force DRI 3, it loads but runs very slowly.

So the slowness-when-rotated is a genuine bug that's specific to DRI 3 mode, I
guess.

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