使用最新的opengl扩展fbo编写的程序，该扩展提供了替代pbuffer的功能，使MRT的实现更加方便。使用vc6和ogl2.0编写。-use the latest expansion FBO opengl prepared by the procedures, the extension provides alternative pbuffer function, the MRT achieve more convenient. Use vc6 and ogl2.0 prepared.