On Thu, 2003-07-31 at 01:02, Ian Romanick wrote: > Michel Dänzer wrote: > > > On Wed, 2003-07-30 at 18:26, Ian Romanick wrote: > > > >>[...] we don't want the R200 driver to expose GLX_MESA_swap_control > >>if there's no vblank interrupt available. Since it can't implement > >>the functionality, we don't want to advertise it. > > > > It could poll for vertical blank... > > I thought about that. The problem is that the swap_control extensions > say "only swap after at least N refreshes have happened." Without > interrupts, how do we know how many refreshes have happened between any > two points of time out side the poll-loop? If there's a way, then we > can fall-back to that.
The CRTC_CRNT_FRAME register could work? The counter is only 21 bits though. -- Earthling Michel Dänzer \ Debian (powerpc), XFree86 and DRI developer Software libre enthusiast \ http://svcs.affero.net/rm.php?r=daenzer ------------------------------------------------------- This SF.Net email sponsored by: Free pre-built ASP.NET sites including Data Reports, E-commerce, Portals, and Forums are available now. Download today and enter to win an XBOX or Visual Studio .NET. http://aspnet.click-url.com/go/psa00100003ave/direct;at.aspnet_072303_01/01 _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
