Mental Ray problem - possibly vray related.

[duke2]

This is maybe possibly not unrelated to vray. I first posted on cgtalk: http://forums.cgsociety.org/showthread.php?p=7661349

The only consistent thing across all our machines is that we have VRay installed, so i'm wondering if you guys are getting the same issue. It would be very much appreciated if you could open the attached scene (max 2014), hit render, and tell me if you're getting the crap or not.

[Morne]

I'm getting the same messed up result.
Here I'm on 2014 with SP2

[Dariusz Makowski (Dadal)]

Vray soo good other renders cant keep up and just break =D

[Donald2B]

Yep, get the same artifacts here.

3ds Max 2014 SP2 / VRay 2.40.04

[vlado]

There is nothing whatsoever in V-Ray that would cause this. I get the same garbled result if I completely uninstall V-Ray from 3ds Max 2014.

Best regards,
Vlado

[Donald2B]

I have also validated what Vlado reported. Uninstalled VRay and then rebooted comp just to be sure. Rendered exactly the same with the artifacting. I get the same results in Max 2013 as well, even with VRay uninstalled.

Wish I could be of more help...this is weird.

[duke2]

Thanks for the testing guys. I'm going to try more things tomorrow. Every time I think I might have an answer, I realise the render nodes or some previous test means I've already ruled it out. I'd "get it" more if the artifacts weren't different every time you render - some kinda ray bias thing, but this has me stumped.

[Donald2B]

That's exactly what I thought it looked like, ie. ray bias settings.

I even recreated your file from scratch just to make sure that something strange didn't get changed along the way. But still ended up rendering the same. There has got to be a setting that we are missing somewhere.