It’s been a while since I used Cryptomattes in v-ray Houdini and Nuke. V-ray seems to render the passes, but as soon as I drop down a Cryptomatte node in nuke 13 (the built-in crypto matte) I’m unable to pick the mattes. It just goes black. A trick or something obvious I’m missing? Thanks
Check that you haven’t got the old cryptomatte still loading as well. They seem to clash and break things.
thanks, yeah we’ve been through that slog as well. Unfortunately we also tried on a virgin nuke install. same behavior.
yeah, redshift crypto mattes work fine. something strange with the v-ray ones
Cryptomatte seems to work on my side.
Can you share some more info, Houdini,OS and V-Ray versions? Is it Solaris ? May be a hip file?
Hi Georgy. Thanks, here’s a .zip with a .hip and a .nk file. v-ray generates a cryptomatte, but I’m not able to pick the mattes in nuke. Windows.
Houdini 19.0.531
v-ray 5.20.20
Nuke 13.1
crypto.zip (588 KB)
It’s the output file name pattern, if you have “$AOV” tag in it V-Ray will save every channel in separate file The problem is that every cryptomatte layer is saved in a separate file and I think there is no working solution to combine them in a useful way. So you just need to remove $AOV tag from filename and V-Ray will save all the elements in a single file and the cryptomatte will work in nuke.
aha! I guess I never noticed that $AOV was part of the default output field in the v-ray ROP. Has it always been? Interesting. Anyway, thanks! Works perfectly.