-----BEGIN PGP SIGNED MESSAGE----- Hash: SHA1 Paul Surgeon schrieb: > On Wednesday 28 December 2005 16:28, Christian Mayer wrote: > >>It's probably not that bad. But the Riva TNT2 had only 16 MB of RAM >>IIRC. > > > 32MB was the most common amount of VRAM on the TNT2. > The 16MB version wasn't as popular.
OK. The TNT had only 16 MB >>And it definitely didn't have any hardware for T&L -- what >>flightgear uses a lot! > > Hmmm ... where does FlightGear use transform and lighting? Everywhere > We don't use hardware lights in FG as far as I know but I may be wrong. > Sure would be nice to have some landing lights on aircraft ... video card > features that just lie idle. The lighting is AFAIK the normal OpenGL lighting with an "hardware" light at the sun position. (Don't know for sure but I'd be very surprised if that's not the case) The performance killer would be the T part of the T&L anyway. All vertices will be transformed at least once. Each transformation is a 4x4 matrix times a vector, i.e. 16 multiplies and 12 additions. Mutliply that will all vertices that might be displayed and you see why the GeForce cards were a big step foreward. CU, Christian -----BEGIN PGP SIGNATURE----- Version: GnuPG v1.4.0 (MingW32) iD8DBQFDsurslhWtxOxWNFcRAkczAKCt8HCn9FGsG8W/4a6wT0MWTy6nxACcCJmL b+R/I2kokehvkPb8IxTqB7E= =OQXS -----END PGP SIGNATURE----- ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://ads.osdn.com/?ad_id=7637&alloc_id=16865&op=click _______________________________________________ Flightgear-users mailing list [email protected] https://lists.sourceforge.net/lists/listinfo/flightgear-users
