If you're looking for the original G3D engine, it's moved to g3d.sourceforge.net This is project to hold/create content including other shaders, models, and demos for that. (And maybe other snippets you're willing to share, just post)
Commercial Use
Modify
Distribute
Place Warranty
Hold Liable
Use Trademarks
Include Copyright
Include License
These details are provided for information only. No information here is legal advice and should not be used as such.