on http://www.l7h.cn/cgi-bin/index.php?a=3 you find C4Dfx 0.15, the next alpha release of my Cg real-time shader plug-in for Maxon Cinema 4D. It now offers more functionality than known from nVidia's Cg plug-ins for Alias Maya and discreet 3ds max.
The new version of the C4Dfx plug-in handles any Cinema 4D geometry (subdivision surfaces, parametric objects, deformers, etc.). The avi renderer now has a preview window. In addition to using .fx shader files, I've begun to emulate the standard Cinema 4D material. Together with the avi renderer, this works like Alias Maya's hardware renderer. But in C4Dfx it's fully integrated with Cg shaders.
A screenshot to look at: http://www.l7h.cn/media/c4dfx.jpg