CGTalk - Feathers animation, flickering problem

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phoenixart

08-19-2008, 08:55 PM

Hi all,

I've got a problem with feathers.
I'm going to do a animation with several feathers, but I'm getting a trouble when I use adaptive spacing and a lot of barb count.
The only chance to avoid flicker is to reduce the barb count or switch to Fixed spacing.
Here's two quick renders:
http://phoenixart.com/temp/feather--notFixed.mov
http://phoenixart.com/temp/feather--notfixed2.mov

Any idea?

phoenixart

08-20-2008, 01:45 PM

Here's the source file

bunk

08-20-2008, 04:51 PM

I tracked it down to the Fresnel shader in the specular channel. Remove the "middle knot" and you get a flicker free render. No idea why it happens and will report it to Maxon.

Cheers,

bunk

phoenixart

08-20-2008, 05:47 PM

Thanks a lot Bunk!!
I was stuck on this.

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