[Nouveau] [Bug 90871] NV30: Xfwm4 use_compositing - garbled display

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=90871

--- Comment #12 from Ilia Mirkin <imirkin at alum.mit.edu> ---
BTW, irrespective of any shortcomings in the modesetting driver, there's 0
chance that GLAMOR will work on nv3x. And like 0.00000000000000001% chance
it'll work on nv4x. The driver logic is just not there to handle those giant
shaders. It should, however, work fine on nv50+, which has a real compiler
backing it.

With xf86-video-nouveau you should be getting dedicated EXA acceleration logic.
I did notice a small bug in some of the pre-nv50 logic while trying to fix
something else:

http://cgit.freedesktop.org/nouveau/xf86-video-nouveau/commit/?id=278ad73475bd137eac8a49ec7a22406bfc2867e7

Unlikely to fix anything for you, but thought I'd mention it.

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