Very strange specularity problem with FastSSS2

V-Ray V-Ray for 3ds Max Issues
1

I’m having a bit of a strange problem with specularity being clipped on a FastSSS2 skin shader.
I’ve included an image that should make it clearer. Instead of gradually fading out as expected,
the specularity gets clipped starting somewhere around 50%

The FastSSS2 is part of a multi-sub shader and the specularity is controlled by a vraycolor node
(same problem without it). I am running the latest Vray, Max 2009 64bit and rendering using LWF.

2

I suspect it might be because of the built-in cutoff for the reflections; you can try to make the glossy coat with a regular VRayMtl material layered on top with a Fresnel texture for blending (it’s what the SSS2 shader does anyways) and see if it works better.

Best regards,
Vlado

3

Is there any way to change the cuttoff valua as i’m having issues with reflections using a bitmap too.

4

I do have a fix for this which you can get if you email me to vlado@chaosgroup.com, otherwise you can use the work-around above.

Best regards,
Vlado

5

Gee!!!

I just realized that I CAUGHT A VRAY BUG!!!

Wow, my first one. Do I get a special prize or something???

6

You win a special FIXED version… :slight_smile:

7

You’re making me nervous.

I had to get my dog FIXED.

He didn’t like it.