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List:       freedesktop-xorg-devel
Subject:    Re: git pull - ickle dri patch
From:       Chris Wilson <chris () chris-wilson ! co ! uk>
Date:       2012-09-26 7:50:38
Message-ID: 6c3329$6bf30n () orsmga002 ! jf ! intel ! com
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On Tue, 25 Sep 2012 18:53:07 -0700, Eric Anholt <eric@anholt.net> wrote:
> Dave Airlie <airlied@gmail.com> writes:
> > This patch has gone around long enough and seem to not make it.
> >
> > Dave.
> >
> > The following changes since commit 70e5766874a919039678bb2ed75f2ccea0cb4345:
> >
> >   xf86: fix multi-seat video device support. (v2) (2012-09-19 15:48:50 +1000)
> >
> > are available in the git repository at:
> >
> >   ssh://people.freedesktop.org/~airlied/xserver for-keithp
> >
> > for you to fetch changes up to e8b2000e5f6e19f1da23bfef8ed9e833c7643e54:
> >
> >   dri2: Pass AsyncSwap [swap_interval=0] requests to the drivers
> > (2012-09-20 09:32:14 +1000)
> 
> I still don't understand why we need a new entrypoint for this.  Is it
> just to avoid synced behavior if the existing entrypoint is not
> expecting to see swap_interval=0 requests?  Or is it that you're trying
> to avoid invalidates for the blit case?  That seems totally orthogonal
> to vblank_mode=0 support.  There are plenty of swap-blit paths in the
> vblank_mode!=0 code.

Because the information required in the driver is private to the
midlayer, there is no way you can pass that through without new ABI.
-Chris

-- 
Chris Wilson, Intel Open Source Technology Centre
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