On 18/04/07 17:27 +0200, Bert Freudenberg wrote: > > On Apr 18, 2007, at 17:00 , Jordan Crouse wrote: > > >On 18/04/07 12:36 +0200, Bert Freudenberg wrote: > >>Another option that has been discussed is rendering at lower > >>resolution and using the Geode's video scaler, which supposedly can > >>do arbitrary scaling of RGB565 (see p. 388 of the LX data book). I'm > >>not sure if this is exposed in X11, though, or if this is even > >>feasible to use for a frame buffer (it reads like it might be for > >>external video sources only). > > > >Please, stop perpetrating this myth. The LX can not scale > >arbitrary chunks > >of pixels - it can only upscale and downscale the entire visible > >area. This > >is available to X through some clever RandR tweaking. > > Err - which myth are you referring to? If we could upscale the whole > screen (effectively lowering the framebuffer size) we'd be happy > campers I guess? Note this is not only interesting for 3D but for any > kind of full-screen animation.
The myth is that this is some sort of arbitrary thing that you can make cleanly happen to different parts of the screen. This is a mode change, with all the usual flickering and noise that accompany any mode change. Do a ctrl-alt-f1 switch to a fb console on a B2 - thats what you will experience when you change the mode with RandR. Jordan -- Jordan Crouse Senior Linux Engineer Advanced Micro Devices, Inc. <www.amd.com/embeddedprocessors> _______________________________________________ Devel mailing list [email protected] http://mailman.laptop.org/mailman/listinfo/devel
