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Deep holdouts in Arnold (HtoA)


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Hope someone came across this:
trying to use a deep exr generated in another package to hold out volumetrics rendered in Arnold.
Lacking a global option I was hoping to be able to read it into my shader (possibly through a similar shadow() call of the old Prman/Mantra trick or comparing Rl with deep samples) but so far no luck on even reading a deep exr.

Anyone came across this before?

Thanks,
Andras

Edited by andras.ikladi
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