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http://blog.csdn.net/shenmifangke/article/details/51105092
关于unity里pbr技术和材质 unity5默认shader和传统的对比
http://blog.csdn.net/shenmifangke/article/details/50587290
unity再战PBR材质流程与材质制作实践
http://blog.csdn.net/shenmifangke/article/details/51105092
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