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Material IDs through refraction

Posted: Thu Nov 17, 2016 10:15 am
by sdanaher
Is there any way to acquire a material ID pass through a refractive object but have the refractive object not contribute its ID colour?

I have objects inside a glass but obviously when enabling a Mat ID pass the glass also renders its ID, blocking everything - turning off the glass doesn't get you an ID pass that aligns with the beauty pass due to the refraction distortion.

Re: Material IDs through refraction

Posted: Sat Nov 19, 2016 2:15 pm
by aoktar
It extract id from first hits.

Re: Material IDs through refraction

Posted: Tue Nov 22, 2016 10:58 am
by sdanaher
I guess its not possible to make it work?

I can do it manually, but its a PIA to set up.