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Intersecting Alpha with displacement

Posted: Wed Feb 15, 2017 7:23 pm
by joecurrie
Hi,

I am having an issue with two planes that intersect and create a thin black line in areas the alpha is making invisible. I have tried adjusting ray epsilon and this only occurs when displacement is on. When increasing ray epsilon the gap increases. Attached below some screen grabs with descriptions to illustrate. I know it is very small visibly however these images will be viewed at high res.

Using the latest stable octane plugin and standalone.

Thanks in advanced for any ideas/help.

Re: Intersecting Alpha with displacement

Posted: Thu Feb 16, 2017 10:44 am
by bepeg4d
Hi joecurrie,
if you don't want to change the ray epsilon value, then you need to scale down your geometry.
Probably the planes are too big :roll:
ciao beppe

Re: Intersecting Alpha with displacement

Posted: Mon Feb 20, 2017 11:56 am
by joecurrie
Hi Beppe,

Thanks for the reply. The geometry isn't too large approx 100cm I think. The second screen grab in my first post is the ray epsilon value set to the minimum it will go. Is there anything else that can be done?

Thanks

Re: Intersecting Alpha with displacement

Posted: Mon Feb 20, 2017 2:52 pm
by bepeg4d
Hi joecurrie,
what kind of mapping/ projection are you using?
ciao beppe