[Description][1]:

> The Intel(R) Graphics Memory Management Library provides device
> specific and buffer management for the Intel(R) Graphics Compute Runtime
> for OpenCL(TM) and the Intel(R) Media Driver for VAAPI.

It’s needed for [Intel(R) Media Driver for VAAPI][2].

[1]: https://github.com/intel/gmmlib
[2]: https://github.com/intel/media-driver

https://github.com/intel/libva/releases

https://github.com/intel/libva-utils/releases

[Description][1]:

> The Intel(R) Graphics Memory Management Library provides device
> specific and buffer management for the Intel(R) Graphics Compute
> Runtime for OpenCL(TM) and the Intel(R) Media Driver for VAAPI.

[1]: https://github.com/intel/gmmlib/

Add Intel Media Driver 2021Q3 Release. [Description][1]:

> The Intel(R) Media Driver for VAAPI is a new VA-API (Video Acceleration
> API) user mode driver supporting hardware accelerated decoding,
> encoding, and video post processing for GEN based graphics hardware.

[1]: https://github.com/intel/media-driver

These were never installed on the distmaster.

These were never installed on the distmaster.

Remove `libigdgmm.be0` and use the newer `intel-gmmlib.be0` named after
the upstream project.

https://github.com/intel/libva/releases

https://docs.mesa3d.org/relnotes.html

Probably due to an outdated libva library, VA-API support wasn’t
enabled. Explicitly enable the support, so the problem is noticed in the
future.

•   /usr/lib/dri/nouveau_drv_video.so
•   /usr/lib/dri/r600_drv_video.so
•   /usr/lib/dri/radeonsi_drv_video.so

Resolves: https://gitlab.freedesktop.org/mesa/mesa/-/issues/7119#note_1521281

The Web site shows 22.1.5 as the latest release, but it’s actually
22.1.7, so move directly to that and do *not* build the 22.1.5 packages.

https://docs.mesa3d.org/relnotes.html