output normalmap by zmapper,but the unfalt surface be rendered out .

[zsz98781]

this normalmap render by zmapper.
http://page.hxsd.com.cn/images/upload/2006/04/03/72023772.jpg

[zsz98781]

this render out result. so bad! have unfloat surface. why.
my shader connetion is:
normalmaper.outlolor >lambert.normalmap;displancemap.outalpha > lanbertSG.displancemap

render by mentalray.

http://page.hxsd.com.cn/images/upload/2006/04/03/53072901.jpg

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