[Bug 220444] x11-servers/xorg-server crashes on attempt to play a video using VDPAU

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https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=220444

Jan Beich <jbeich at FreeBSD.org> changed:

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                 CC|                            |jbeich at FreeBSD.org

--- Comment #8 from Jan Beich <jbeich at FreeBSD.org> ---
(In reply to Mikhail Teterin from comment #7)
> I wonder, what I am missing, however, by not using DRI3

Maybe see https://en.wikipedia.org/wiki/Direct_Rendering_Infrastructure#DRI3

> Now it can also do VDPAU

mplayer (unlike mpv) is too old school to support VAAPI or VDPAU via -vo
opengl.
VAAPI also supports encoding but I can only confirm it works on i965 +
drm-next.

> Should Firefox be able to use vdpau as well -- and consume less CPU as a result?

Not yet: https://bugzilla.mozilla.org/show_bug.cgi?id=1210729

In some cases layers.acceleration.force-enabled=true may provide better
compositing performance. However, I suspect the default won't change before
WebRender circa FF57+.

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