Re: Poor performance with Alder Lake graphics (ThinkPad T16)

Kevin Oberman <rkoberman@gmail.com> writes:

>> Looks like OpenGL acceleration failed under Xorg for some reason.
>> Maybe caused by https://github.com/freebsd/drm-kmod/issues/175
>
> Nope. glxinfo looks fine.

glxinfo is X11-specific where "direct rendering" is often misleading.
Indirect GLX hasn't been used by default for >10 years.

See also https://gitlab.freedesktop.org/mesa/mesa/-/commit/08bc3d175069
         https://gitlab.freedesktop.org/xorg/xserver/-/commit/d0da0e9c3bb8

> Can't believe that this graphics is MUCH worse than my 12 year old Ivy Lake
> system.

On my hardware Xorg is 20% slower, see https://reviews.freebsd.org/P501
This is *without* TearFree and X11 compositor (e.g., picom).