CG - 高级绘制语言 免费编辑 修改义项名

CG = C for Graphics是为GPU编程设计的高级绘制语言，由NVIDIA和微软联合开发，微软版本叫HLSL，CG是NVIDIA版本。Cg极力保留C语言的大部分语义，并让开发者从硬件细节中解脱出来，Cg同时也有一个高级语言的其他好处，如代码的易重用性，可读性得到提高，编译器代码优化。

Cg (C-for-graphics) is a generic shader language. 'Generic' is the key word here. Before Cg there were different languages for different platforms, e.g. OpenGL extensions and Direct3D pixel shaders, etc. But now you can write in Cg and the same code can be used on many platforms.