> From: Harald JOHNSEN > > Jim Wilson wrote: > > >Just thought I'd mention a couple things. > > > >1) Some of the aircraft panel instruments display z-fighting even at the > >higher depth buffer setting... > > > ># grep Depth XFree86.0.log > >(**) NVIDIA(0): Depth 24, (--) framebuffer bpp 32 > >(--) Depth 24 pixmap format is 32 bpp > > > >...and I'm wondering if there's been some change in the 2D panel code or > >something else that might be producing this. The > Citation II seems to be especially bad. Are other folks seeing this? > > > > > > > Depth tests are disabled when drawing 2D or 2.5D panels. I've checked > the Citation-II, > I can not see any z-fighting. >
http://www.spiderbark.com/fgfs/citation_instruments.png It turns out these are in fact contained in a single 3D model for the entire aircraft, so it has nothing to do with 2D. Apparently the problem is in the models. I'll have to go back and make a list of the others. Of course now this raises a question about how my nvidia card is operating a 16bpp buffer when the logs all show it is configured properly. FWIW I'd like to suggest that it is a good idea for 3D modelers to test their work at 16 bit depth buffer settings since a lot of folks are still running modern laptop, consumer grade and Intel embedded chips at 16 bit for performance reasons. Even though it involves moving layers further appart, adjusting 3D instrument models to support 16 bit generally does no harm to the appearance of the model at the normal viewing distance. Best, Jim _______________________________________________ Flightgear-devel mailing list [email protected] http://mail.flightgear.org/mailman/listinfo/flightgear-devel 2f585eeea02e2c79d7b1d8c4963bae2d
