nVidia开发的图形语言 Cg，用于进行顶点渲染和象素渲染，语法类似于 C。-nVidia graphics development of the Cg language, used for pixel and vertex exaggerated exaggerated, similar to the C syntax.

cg编译器，可以编译cg语言的程序，方便直观。还可以在c++中调用。

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