[Intel-gfx] [RFC] DRI2 swapbuffers (yes yet again)

[Jesse Barnes]

On Thu, 30 Apr 2009 08:08:36 +0200
Michel Dänzer <michel at daenzer.net> wrote:

> On Wed, 2009-04-29 at 18:02 -0700, Jesse Barnes wrote:
> > On Wed, 29 Apr 2009 15:09:33 -0700
> > Jesse Barnes <jbarnes at virtuousgeek.org> wrote:
> > > I'm still working through mutlihead issues on the kernel side; the
> > > flip waits should wait for *both* vblank events before completing
> > > the flip.  But other than that, I'm pretty happy with things.
> > 
> > This incremental set fixes up the multihead handling and adds swap
> > interval support as a bonus.  It's nice to see flipping & no
> > tearing on two heads at once!
> 
> Is there a mechanism for choosing the CRTC to sync to in ambiguous
> cases? E.g. either a driconf option (allowing per application
> configuration) or a RandR property (allowing global configuration)
> would be nice I think.

The kernel is supposed to handle it and reject flips on disabled CRTCs
so I was hoping it wouldn't be necessary.

But the 2D driver controls which CRTC id is passed to the kernel, so it
could be exposed as an xrandr option possibly.

-- 
Jesse Barnes, Intel Open Source Technology Center