https://www.opengl.org/registry/
https://cvs.khronos.org/svn/repos/ogl/trunk/doc/registry/public/api/readme.pdf
https://cvs.khronos.org/svn/repos/ogl/trunk/doc/registry/public/api/
https://github.com/hpicgs/glbinding
原文：http://www.cnblogs.com/lilei9110/p/4440238.html