这是一个OpenGL调用Cg程序的例子，简单的说明了OpenGL程序如何调用Cg程序；在编译前，必须确定安装了Nvidia的Cg ToolKit!-OpenGL This is a procedure called Cg example, a simple explanation of how OpenGL procedure called Cg procedures; the compiler, must determine installed Nvidia's Cg ToolKit!

Cg顶点着色程序。详细说明了各个顶点如何着色，着什么颜色等，以及整个图形的颜色。同样，必须安装Nvidia的Cg ToolKit！-Cg vertex coloring process. A detailed descr iption of how each vertex color, what color, as well as the entire graphic color. Similarly, the installation of the Nvidia Cg ToolKit!

Cg的顶点光照程序，设定光源位置在某个顶点位置来模拟图形在光照下的效果。同样，必须安装Nvidia的Cg ToolKit！-Cg vertex light procedures set in place a light source vertex position in the graphics to simulate the effect of light. Similarly, the installation of the Nvidia Cg ToolKit!

由nVIDIA公司编写的一套关于CG语言的开发介绍。是显卡编程开发人员必备书籍。-Prepared by nVIDIA' s CG language on the development of a descr iption. Is a graphics program developers must have books.