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From:
Matthieu Herrb <matthieu@openbsd.org>
Subject:
Re: tearfree modesetting
To:
tech@openbsd.org
Cc:
Ted Unangst <tedu@tedunangst.com>
Date:
Mon, 9 Jun 2025 09:28:01 +0200

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On Sat, Jun 07, 2025 at 09:29:48AM +0200, Matthieu Herrb wrote:
> On Fri, Jun 06, 2025 at 05:11:50AM +0200, Theo Buehler wrote:
> > On Thu, Jun 05, 2025 at 11:01:55PM -0400, Ted Unangst wrote:
> > > This backports the x.org modesetting driver to get the tearfree option.
> > > (On by default.) This makes scrolling much more enjoyable.
> > > 
> > > I don't know what the x.org release cycle is, but this code has been
> > > sitting upstream for years without making it into a released version.
> > > 
> > > I wanted it, so here it is.
> > 
> > This is pretty similar but not identical to naddy's patch from a few
> > months ago. It would be really nice to have it:
> > 
> > https://marc.info/?l=openbsd-tech&m=174118941524729&w=2
> > 
> 
> Hmm yes. With the current event in X.Org, a new release of the Xserver
> main branch looks less and less likely in a foreseable future. I've
> not had time to test the patches, but I'm ok on the principle.
> 

I've looked closely at the different versions of the patch,
the recent version by tedu@ is ok matthieu@.

It reduces diffs with -current xorg a bit more and also avoids a useless
increment of the driver ABI version (the corresponding changes are not
in the tearfree patch).

-- 
Matthieu Herrb