unity, multi pass shader中的surface pass

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今天尝试写一个multi pass shader，但其中有一个Pass是surface pass，总是莫名奇妙地报错。后来看到下面帖子：

http://forum.unity3d.com/threads/achieving-a-multi-pass-effect-with-a-surface-shader.96393/

此帖3楼中写道：“

You can add arbitrary passes while using a surface shader.

You just stick everything else in Pass {} tags and ensure that your surface shader isn‘t inside any of them (as Unity will generate them as it parses the surface shader).

”

即multi Pass shader中的surface Pass都不要加Pass{}标签。因为surface Pass在编译时会自动生成Pass{}标签。

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另外一个相关的帖子：http://answers.unity3d.com/questions/354774/index.html?sort=oldest

unity, multi pass shader中的surface pass

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原文地址：http://www.cnblogs.com/wantnon/p/4456787.html