Cryptomatte (Compatible with IFFS 2018.1.0 and up)

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Cryptomatte - extract up to four mattes from the ID/coverage pairs generated by Arnold/Clarisse/Mantra’s Cryptomatte shaders.

There’s no need for this shader unless using very old Flame versions - since 2020 there’s a built-in node for it: https://help.autodesk.com/view/FLAME/2023/ENU/?guid=GUID-0402116E-B47C-4E32-9010-DB8C334853E0

It’s crucially important to use the floating colour sampler window - pick the colours from the first input, add them to the floating swatches and only then transfer them to the shader controls! Auto Key needs to be off as well. This works in Flame 2018 Update 1 and above. See demo:
http://youtube.com/watch?v=p5D1FRRlplU

lewis _at_ lewissaunders.com


Version notes

updated description of matchbox to note Flame has a builtin node now


Older versions that shader

12th of September this year, around 22:30

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updated description of matchbox to note Flame has a builtin node now

6th of March 2018

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Added note about Auto Key causing problems

4th of June 2017

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See https://github.com/lcrs/Cryptomatte/tree/flame/flame

4th of June 2017

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This is a quick working upload of commit 5cfa22896c74150817c3b7a2dc187cbf194afd9d from this branch: https://github.com/lcrs/Cryptomatte/tree/flame


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