本教程是从NeHe的OpenGL教程迁移过来的，代码变为Qt实现的。所以有的课程一时还没有实现成功，所以可能有些教程是跳跃的-This tutorial from NeHe' s OpenGL Tutorials migrated, the code is implemented into Qt. Therefore, some programs If we can not achieve success, so there may be some tutorials are jumping