2SidedMtl has reflection when it shouldn't?

[dlparisi]

I've got a stranage problem with a 2-sided material where I'm getting a reflection when I don't think I should be (I don't want one). I've tried everything to get rid of it: turned off raytraced reflections, increased blurriness, rebuilt geometry, checked normals, rebuilt materials, etc. but whatever I do I still get a nice sharp reflection. It's muted because of the glow on the two sided material but it's still noticeable. The image I'm working on is an elevator cab with a glowing ceiling (the ceiling is the 2-sided mtl). See the cropped images below...

RGB color:


Reflection:


2SidedMtl:


Front Material:


At this point I'm just going to leave the reflection because I can't get rid of it. Any ideas what I'm doing wrong or a workaround?

Thanks,
David

P.S. - should add I'm on V-Ray 2.40.02

[dlparisi]

OK, I've kind of figured this out. The reflection was coming from the refraction of the front material if it was part of a 2-sided material. The amount of reflection was dependent on the value of the refraction color, independent of the blurriness. Once I took out the refraction amount the reflection disappeared. Seems like a bug to me unless I'm not understanding how the 2-sided material works.

Any thoughts?

[tashko.zashev]

Hi,

It looks like a bug to me, so I'm going to send simple scene to our developers in order to get confirmation about that.

[dlparisi]

Thanks for looking into this.