3D Anaglyph Gaming (FIFA10 & Quake3/ioquake3)
Solution 1:
Can you spectate on a Quake 3 match using ioquake3?
I'm afraid you can't, but I can't say for sure. ioQuake3 eventually found one baseq3 server (at 163.36.202.155:27960) but failed to connect to it (it got stuck at Awaiting Challenge). I'm afraid they may be network incompatible by default, then.
What is the best way for adding anaglyph support to Quake3?
ioQuake3 claims it natively supports anaglyph rendering. You can enable it by using the r_anaglyphMode 1
cvar.
Solution 2:
You might want to take a look at this site: http://www.stereo3d.com/quake.htm