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hypersuperduper
02-01-2019, 11:19 AM
Has anyone managed to approximate the old school additive transparency in lw2018 or 2019? I am on a Mac which means my 2015 is basically borked, and I need me some additive transparency or a reasonable facsimile. Can it be done with the new material component nodes in 2019?

hypersuperduper
02-04-2019, 06:16 AM
No replies... but If anyone stumbles upon this thread looking for a similar solution I think I figured it out (at least as far as my needs go.)

By using the Principled BSDF shader and pumping the texture color into Color and Luminous Color, and setting Translucency, Luminous, Transparency and refraction index to 1. Not sure if it is perfectly additive, but it is close enough for me.

You need to pump up the ray recursion limit and Refraction recursion limit pretty high if you want to layer lots of stuff, and you might want to turn off draft mode in vpr, but it works pretty well.

OFF
02-04-2019, 08:05 AM
Try transparency with ior = 1+color.