使用后缓冲区进行物体选择
Object selection using the back buffer
直接用本文题目(中文)居然搜不到什么资料,现总结如下:
OpenGL Selection Using Unique Color IDs
http://content.gpwiki.org/index.php/OpenGL_Selection_Using_Unique_Color_IDs
http://www.cnblogs.com/dreamcs/articles/2525834.html