Boolean Shatter seems to be duplicating all geometry- loads of z-fighting ensuing

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Hi, new to Houdini so apologies if this is a very basic question.

I'm following along Entagma's “Adding Houdini To Your Arsenal” series and I'm running into a problem where the Boolean Shatter operation seems to be doubling my geometry.

I'm shattering a box (geo A, treated as a solid) with an open surface (geo B, treated as a surface). Using the below settings:


I have 400,000 polys before the boole. Afterwards, I have 800,000 polys + visible z-fighting in the viewport render


Can anyone help figure this out? I've mirrored the Entagma procedure perfectly AFAIK but they don't seem to have any duplicated geometry after the Boolean shatter.

Thanks!
Edited by Texturerama - March 1, 2019 18:34:06

Attachments:
Boole Settings.PNG (83.3 KB)
z-fighting.PNG (2.8 MB)

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Hey Texturerama,

I am following this exact same lesson of AHTYA and I got the same bug.

It's certainly not the best way but I found that adding a Divide node before the Boolean to triangulate the mesh gets rid of the unwanted duplication.

Hope this helps. If anyone knows of a better solution I would love to hear about it.

E.
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