For low end systems, simply use Simons MiniB3D. It's already pretty good, and will get to the point of almost full Blitz3D compability.
Chances are that Max3D will feature a similar interface so porting should be easy. Always seperate you 3D and game code, so you can switch the underlying stuff easily :)
Chances are that Max3D will feature a similar interface so porting should be easy. Always seperate you 3D and game code, so you can switch the underlying stuff easily :)