on opengl achieve 3D cone reduction of a small sample. From this example can be...

代码说明：

基于opengl实现的三维视锥裁减的一个小示例。由这个示例可以看出视锥体裁减对于提高显示速度的重要性。-on opengl achieve 3D cone reduction of a small sample. From this example can be seen as the cone reduction in the rate of increase shows importance.