Why is CG 2.0 of special interest?
Let's have a look at this Nvida PDF_from the GDC2007 that talks about Geforce8 OpenGL extensions. You will see it's Shader 4.0 related… Shader 4.0 is DirectX 10 stuff! Now in this PDF it says the following, too:
Cg 2.0 -> Not a GL extension -> Will support the capabilities
So when will CG 2.0 be available? Well … it's already released! The CG 2.0 Toolkit is part of the Nvidia OpenGL SDK
Please obtain the Cg 2.0 Toolkit from the full OpenGL SDK 10 installer.
I think this means DX10 features using a Geforce8 are already available under Windows XP! Now …. what if Virtools 4.x would come with a CG 2.0 rasterizer?
As Patrick said: