I am currently porting a project from Linux to Irix and was interested in which Irix version is equivalant to osmesa16 as well as osmesa32.  One of the applications I'm porting is sensetive to osmesa32 (it overbuffers and causes "black" spots) so I would like to use the osmesa16 equivelant.  I noticed that irix only has 3 options, 64, o32, and n32.  Any help on the difference between these versions would be appreciated.