On Wed, Sep 28, 2022 at 4:30 PM Nicolas Chauvet <kwizart(a)gmail.com> wrote:
Le mar. 27 sept. 2022 à 20:57, David Airlie <airlied(a)redhat.com> a écrit :
>
> On Wed, Sep 28, 2022 at 4:02 AM Frantisek Zatloukal <fzatlouk(a)redhat.com>
wrote:
> >
> > Hi,
> >
> > since this mesa change (
https://src.fedoraproject.org/rpms/mesa/c/94ef544b3f2125912dfbff4c6ef373f...
) in F37 and rawhide, the mesa package lost support for vaapi accelerated encoding and
decoding of h264, h265 and decoding of vc1 (
https://bugzilla.redhat.com/show_bug.cgi?id=2123998 ).
> >
> > It seems like a big regression from F36 for users with GPUs with open source
drivers (mainly AMD, maybe nVidia/other non x86...), that affects common use-cases of
Fedora Workstation, like watching videos, in-house game streaming, attending online
meetings and many more.
>
> This was an oversight being enabled prior to this, and I think we have
> to remove it from older Fedora as well. Fedora cannot ship anything
> that causes the OS to provide an API which exposes patent algorithms.
>
> The patent licensing around H264/H265 is such that providing this
> could leave Red Hat and other Fedora distributors exposed to legal
> problems.
> Dave.
>
> > I'd like to ask:
> > - Can somebody elaborate on reasons to change something that was working in
Fedora for some time already?
> > - Is there any short/mid/long term plan to improve the situation?
> > - Would it be possible to provide vaapi support at least as an rpmfusion addon
to alleviate the fallout in the short term?
>
> The last might be possible, but I'm not sure how to go about it.
At least I've asked in
https://bugzilla.redhat.com/show_bug.cgi?id=2123998#c8
That the fedora mesa package completely drops the vaapi backend, so a
complementary package can just drop the missing files instead of
rebuilding a whole mesa package.
It would assume the fedora mesa package to have everything needed in
order to cope with vaapi backend enabled in the core libraries and
that the vaapi backend only provide the implementation.
Please take a look at the rawhide changes I just pushed. This should
split things out sufficiently.
Dave.