说明：  GPU编程的基本教程，源码中介绍了基本技术的使用，包括纹理、fragment program、copy to texture等技术。 A basic GPU tutorial, several basic techniques are used in the source code, including texture, fragment programming, copy to texture techniques and others.
(GPU programming basic tutorial, source described the use of basic skills, including textures, fragment program, copy to texture, such as technology. A basic GPU tutorial, several basic techniques are used in the source code, including texture, fragment programming, copy to texture techniques and others.)