[Nouveau] [Bug 111213] VA-API nouveau SIGSEGV and asserts

[bugzilla-daemon at freedesktop.org]

https://bugs.freedesktop.org/show_bug.cgi?id=111213

Ilia Mirkin <imirkin at alum.mit.edu> changed:

           What    |Removed                     |Added
----------------------------------------------------------------------------
             Status|NEW                         |RESOLVED
         Resolution|---                         |FIXED

--- Comment #18 from Ilia Mirkin <imirkin at alum.mit.edu> ---
I've pushed a change to mesa which disables the compute paths for the video
compositor on nouveau (well, basically just enabled for AMD). Unfortunately it
was relying on AMD-specific features. We probably could have implemented these,
but the benefits are dubious, so I didn't want to bother...

This also seems to fix the assertion in libdrm, which is probably triggerable
in more general ways, but oh well.

https://cgit.freedesktop.org/mesa/mesa/commit/?id=958390a9bf8904522a50f8e9c26c50c96179c183

commit 958390a9bf8904522a50f8e9c26c50c96179c183
Author: Ilia Mirkin <imirkin at alum.mit.edu>
Date:   Sat Aug 17 12:13:34 2019 -0400

    gallium/vl: use compute preference for all multimedia, not just blit

    The compute paths in vl are a bit AMD-specific. For example, they (on
    nouveau), try to use a BGRX8 image format, which is not supported.
    Fixing all this is probably possible, but since the compute paths aren't
    in any way better, it's difficult to care.

    Bugzilla: https://bugs.freedesktop.org/show_bug.cgi?id=111213
    Fixes: 9364d66cb7 (gallium/auxiliary/vl: Add video compositor compute
shader render)
    Signed-off-by: Ilia Mirkin <imirkin at alum.mit.edu>
    Reviewed-by: Marek Ol<C5><A1><C3><A1>k <marek.olsak at amd.com>

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