NeHe OpenGL Tutorial 是相当不错教程， 也是目前我见过的最好的 OpenGL 教程。 教程的每一篇都是结合着实例， 结合着源代码来讲解的， 循序渐进， 是学习 OpenGL 的佳品。 尤其是作者认真的态度和他的耐心更是值得赞叹， 他会详细地讲解每一行代码的实际作用。这是系列教程的第二课-NeHe OpenGL Tutorial is a very good course, is the best I have seen tutorials OpenGL. Tutorials are a combination of each of the examples, combine to explain the source code and step-by-step, is to study the Jiapin OpenGL. In particular, the author and his serious attitude of patience, this is even more impressive, he will explain in detail each of the actual effect of lines of code. This is the second lesson of the tutorial