立方图纹理影射，来自OpenGL权威指南的绝好资料哦-cube map texture insinuation from the OpenGL authoritative guide to the excellent information oh

一个用opengl 和 cg 写的demo。展示了如何实现cubemap(立方贴图)技术-with opengl and a cg write demo. Demonstrated how to achieve cubemap (cubic map) Technology