[Bug 282300] multimedia/mpv

https://bugs.freebsd.org/bugzilla/show_bug.cgi?id=282300

--- Comment #10 from Jan Beich <jbeich@FreeBSD.org> ---
(In reply to hbsd from comment #2)
> libEGL warning: DRI2: failed to authenticate

Did you VT switch? It breaks DRM thus no GL/Vulkan accel until Xorg is
restarted. See bug 271995.

AFAIK, mpv expects working DRM for many VOs except --vo=x11 and --vo=xv. CPU
rendering via GL/Vulkan is *extremely* slow, so many apps reject it in favor of
Xshm/wl_shm sometimes with skia/cairo/pixman. For example, mpv requires
--gpu-sw flag to allow swrast (llvmpipe) with --vo=gpu or --vo=gpu-next.

(In reply to Sergiy from comment #9)
> But I use the xf86-video-nv driver (my hardware is old),

xf86-video-nv doesn't use drm-kmod but supports XVideo. mpv should default to
--vo=xv. If it fails you need to report upstream after bisecting.

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