Matte Surface with Mtl2sided problem

[henrique.dan]

Hello,

I was trying to blackhole an asset with "matte surface" and "-1 alpha contribution" from the object proprieties node,
and I found that the result was slightly different in comparison to without "matte surface".

After some tests, I realized that the problem was that the asset had a 2sided mtl applied to it.
Looks like that when you "matte surface" an object with 2sided mtl applied, it gets a different result.

I'll attach some prints with VrayMtl version / VrayMtl2sided version and the scene file.

Tested this on Maya 2016 ext 1 SP 6 - Vray for Maya 3.30.01

Thanks,
Dan

[svetlozar.draganov]

Thanks for the report, I managed to reproduce the issue.
Will add into our system and will let you know when we have some progress on it.