[Mesa-dev] vulkan video + beta header enables

[Michael Blumenkrantz]

I think maybe a simple policy like:
* always disable them for release builds
* require env vars to enable at runtime

would be enough to avoid having distros pick them up and block people from "relying" on them.

Otherwise Jason's comment on collaboration seems sufficient for doing updates to the headers/xml. Might just be something we work with a bit more ad-hoc as more people start to work on/with beta features too.

On Thu, 4 Nov 2021 20:59:11 -0500
Jason Ekstrand <jason at jlekstrand.net> wrote:

> On Thu, Nov 4, 2021 at 8:53 PM Dave Airlie <airlied at gmail.com> wrote:
> >
> > Just polling for opinions here on how best to move forward with
> > enabling the provisional vulkan beta headers in Mesa and the fallout
> > from doing so for people importing updated vulkan headers.
> >
> > Do we want to allow beta/provisional features in main?  
> 
> IMO, it's fine as long as you never land the final patch which flips
> on the extension or, if you do, make sure it's very carefully guarded.
> 
> > Do we want to do it only under a meson option that distros never enable?  
> 
> RADV_I_KNOW_IM_ASKING_FOR_BETA_FEATURES_WHICH_MAY_NOT_WORK=<date>
> 
> That way, it's harder to put in your .profile. :-P  Honestly, though,
> just leave the last patch which flips it on in an MR that doesn't get
> merged until the extension is final.
> 
> > If we do, who is responsible for updating the beta code on new header
> > import, since the video headers are under quite regular changes?  
> 
> That needs to be a collaboration between the people working on the
> beta feature.  Thanks to all the XML code-gen we do, it's pretty hard
> to update it one driver at a time.  Maybe that'd be possible but
> ugh....
> 
> --Jason