Waiting for vertical refresh on Intel 965 and 945 chips in recent git

[Hamish Moffatt]

On Fri, Jun 08, 2007 at 04:35:17PM +0200, Michel Dänzer wrote:
> On Fri, 2007-06-08 at 21:18 +1000, Hamish Moffatt wrote:
> > On Fri, Jun 08, 2007 at 08:23:05AM +0200, Michel Dänzer wrote:
> > > Yes, this is because the X server DRI layer now counts DRI windows
> > > according to visibility, to allow e.g. page flipping to work with
> > > multiple windows as long as only one of them is visible. So the intel
> > > driver can't tell the difference between a window being invisible and it
> > > not existing at all and disables the vblank interrupts.
> > 
> > How is "3D in use" defined?
> 
> With current xserver master: One or more DRI windows is visible.
> 
> With xserver 1.3 or older: One or more DRI windows exists.
> 
> > MythTV uses DRM vertical blanking sync with Xv output; I wouldn't say it
> > uses 3D by any stretch of the imagination.
> 
> Doesn't it use GL for the menus? If so, the above conditions are
> probably satisfied with direct rendering or AIGLX.

Yes it does, although those won't be visible at the same time Myth wants
to use DRI (and/or OpenGL) vblank sync. Is that a problem?

Hamish
-- 
Hamish Moffatt VK3SB <hamish at debian.org> <hamish at cloud.net.au>