and for kicks I decided to see what the t buffer can do. except, I can't find any info how how to get it working; the glide sdk seems to end with the voodoo2s....

http://www.opengl.org/registry/specs/3DFX/tbuffer.txt
http://www.opengl.org/registry/specs/3DFX/3dfx_multisample.txt

(please note that GL_3DFX_tbuffer is removed from extension string in later 3dfx opengl implementations.)