Maya arnold gpu material IDs

[azn.westni]

Hi! I have noticed that using any kind of utility nodes eg. Aiusercolordata or aiflat to create multimatte custon aov results in color bleeding with gpu rendering. Is there any working solution for gpu rends?

[Stephen.Blair]

What's a multimatte custom AOV? Is it what I think it is, or something different?
Maybe you can upload an example.

[Stephen.Blair]

What's the setup to repro the problem?

[azn.westni]

Hi! Thanks for responding! The problem seems to appear when you apply transmission to aistandardsurface material. As soon as I put transmission weight back to 0 the Material_ID aov looks correct. It doesn't matter if I use aiFlat or aiUserColorData node or any similar node that would do the same thing. All works fine with CPU renders. @Stephen Blair

[azn.westni]

But this is not a problem for me anymore. I found a work around for getting IDs using the AiMaterials' AOVs