My understanding is that flat panels do not "scan" a screen as a CRT does, so there is no vertcial blank period to perform a page flip. They do have a refresh rate of usually around 60Hz, but his is simply how aften the pixels are able to switch states, or how often the display is refreshed from the panels backbuffer. In a DGA mode if you try waiting for a vblank with a flat panel, then the page flip is performed immediately, instead of waiting for anything. The panels own circuits decide when to change the display anyway, so anything you try to do yourself is moot. If I am incorrect, then I apologise...
On Sat, 27 Nov 2004 13:37:01 -0500 Michel Dänzer <[EMAIL PROTECTED]> wrote: > On Sat, 2004-11-27 at 16:40 +0000, James Wright wrote: > > About a year ago I was using DGA for my games graphics library. I > > was told by various people that using DGA was not the way to go. At > > first I thought this was nonsense, as you can't get vsync using the > > more standard XPutImage method (and get tearing). However, all changed > > when I bought a laptop with TFT screen. Problem is, there is no vsync > > on the new LCD/TFT monitors! > > There is in my experience, at least if you use the panel's native mode. > > > -- > Earthling Michel Dänzer | Debian (powerpc), X and DRI developer > Libre software enthusiast | http://svcs.affero.net/rm.php?r=daenzer > > _______________________________________________ > Devel mailing list > [EMAIL PROTECTED] > http://XFree86.Org/mailman/listinfo/devel > _______________________________________________ Devel mailing list [EMAIL PROTECTED] http://XFree86.Org/mailman/listinfo/devel
