Exported VrayVRmat from Max is not working in Maya

[BeneZ]

Attached some self-explanating screenshots after a fist render test.

I exported from 3dsMax with TOOL > Vray vrmat converter

It's a simple Metall material from 3dsMax library, even no maps connected.
It looks reflecting in 3dsMax but just like a dull lambert in Maya.

Max 2021 and Maya 2020.3, both Vray5.

( I know I can of course easy transfer the settings of this example, but this is a technical test and there are also some more complex materials.)

Thanks.

Rendering in Maya Vray VFB:





And this is how it originally looks in Max

[hermit.crab]

The issue is due to the fact that the "Metalness" and "Use Roughness" parameters are not exported in the .vrmat. Try exporting the material as a .vrscene, which you load in the VRayVRmat Mtl and see if that works out for you.

[BeneZ]

Thanks, this is exactly what I did then.
But loading materials from vrscenes seem to be slower? At least at some point with many materials it became sluggish in Maya and I started to replace them manually.

I used it to transfer from the Vray asset library materials, but some materials on the same objects did not translate correctly, because the UV or bump scaling looked wrong and I did not see a way to fix this with a vrscene material.
(A small structure on a surface became big and bumpy in Maya.)
I did not find out what has been the reason. The scene units are actually always the same.

[hermit.crab]

Are your V-Ray asset library materials by any chance imported with "Use real-world scale"? If so, you would need to scale your object's UVs in Maya so as to get a correct result. The alternative option is disabling real-world scale prior to .vrscene export.