I have a few scripts I wrote for perl/SDL/OpenGL on Linux, to do some basic 3D geometry stuff. (I wrote them to test my CPAN Math::Polyhedra module.) A basic event loop, a shaded, lit, materialized, display-listed set of polyhedra, and some camera control.

Please /msg me if you want me to email a copy of my scripts to you once I get home. They'd serve as a starting point for some experiments of your own.

I was planning on a much larger project, but I could never get a texture applied to a 3D polygon (even following the usual OpenGL references), which would be critical for the project. If more recent builds can do that properly, I'd be interested in doing more perl/SDL/OpenGL work.