这是一个如何在OpenGL双缓冲区环境下，使用OpenGL实现橡皮筋功能的程序。内附源码和例程。真正实现了擦除与重绘的功能，从而使OpenGL的效率提高。这是我从国外网站上找到的，和大家分享一下。-This is a how OpenGL double buffer environment, the use of OpenGL to achieve rubber band functionality. Containing the source code and routines. Realize the function of the erase and redraw, thus improving the efficiency of OpenGL. This is what I found on the site from abroad, and share with you.