On Sun, 9 Jun 2002, Leif Delgass wrote: > On Sun, 9 Jun 2002, David Bronaugh wrote: > > > Hey all, > > > > I was playing quake3 on my laptop here (which has a 3D Rage Pro chip) > > and noticed a few problems with the rendering. Here are comparison shots > > (taken with identical settings) on my TNT2 and on the Mach64-based card: > > > > http://bronaugh.linuxboxen.org/q3dm1_tnt2.jpg > > http://bronaugh.linuxboxen.org/q3dm1_mach64.jpg > > > > This is with the latest CVS (downloaded last night). > > > > Map was q3dm1. Lightmap lighting was enabled, GL extensions were > > enabled, texture detail was the same (second from highest), geo. detail > > was medium. High quality sky was off (it just distracts). > > > > You can see clearly the major rendering glitch with the mach64 on the > > walls - the texture just isn't integrated as it should be. > > I've noticed those particular textures as well. My guess is that it could > be a result of the card not being able to modulate alpha values for the > GL_MODULATE texture environment. This is a conformance problem that can't > be worked around without essentailly making all textured polygons software > fallbacks. In most games I've tested with, GL_MODULATE is the most used > texture environment (Quake3 uses it almost exclusively, I think). The > more recent builds of Quake3 have some workarounds for the RagePRO that > fix transparency problems with smoke trails and such which were evident in > the demo, however. Having said all that, I haven't actually verified that > this is the problem in this particular case, but I have seen texture > transparency problems in UT that I know are because of this hardware > limitation.
Well, I just took a look in Windows and they look the same, so that makes me think this is indeed because of the texture environment hardware limitation. -- Leif Delgass http://www.retinalburn.net _______________________________________________________________ Don't miss the 2002 Sprint PCS Application Developer's Conference August 25-28 in Las Vegas - http://devcon.sprintpcs.com/adp/index.cfm?source=osdntextlink _______________________________________________ Dri-devel mailing list [EMAIL PROTECTED] https://lists.sourceforge.net/lists/listinfo/dri-devel
