说明：  这个是相当不错的OpenGL教程，该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。 Lesson1--Lesson2
(this is a fairly good guide OpenGL, the Directory each with a combination example, in conjunction with the source code to explain the gradual process of learning OpenGL on the market. Lesson1-- Lesson2)