How to get user Cryptomatte or custom Cryptomatte in Vray for Houdini?

[bdancer]

> The confusion is why myAttr look the same as eachPackedPrim what's the point to have 02 custom cryptomatte with the identical color? that's the confusion for me!

Sorry, I don't understand that... could u post a screenshot of what does that mean? Which identical color? I've posted a screenshot with the different color per-packed...

[elrachyd]

here is a screenshot for the confusion

[bdancer]

Sorry, I don't understand again... What is the confusion here?
"myAttr look the same as eachPackedPrim" - because both use the same attribute and attribute value? so same attribute value results in the same "color"?

[elrachyd]

I can't explain more with my boring English but take a look at this scene with HtoA cryptomatte
I want to achieve the same thing with Vray, can you reproduce this please?
Thank you
here is the hip file

[bdancer]

Cryptomatte in V-Ray doesn't support user attributes per-polygon, only for object or packed. Scene attached.

[elrachyd]

really helpful thank you

[hsz]

It seems that none of these workflows works on the GPU+CPU. I do not get the same results at all. If that is the case, are you guys planning to support this on the GPU+CPU?

[hsz]

Any word on this?

[bdancer]

> Any word on this?

We are working on this.

[hsz]

> Any word on this?

We are working on this.

Got it, Thanks!

[bdancer]

hsz,This should work in the recent nightly, could u pls test?

[hsz]

Great, I'll test it and let you know!

[hsz]

I download vray_adv_43003_7857 nightly and isnt working? I'll try to download the nightly from today. Im using your example file from above for this test, just in case. "vray_htoaCryptomatte"

[hsz]

So I tried with the "vray_htoaCryptomatte" and that worked out with today's nightly. However, with this scene it doesn't work, any idea why?

https://drive.google.com/file/d/1GD9...ew?usp=sharing

Thanks!

[bdancer]

hsz, some changes were wrongly picked, we'll fix this asap, sorry for that...