VRayFastSSS2 and Light exclusion troubles.

[CubeCreative]

Hello,

We are experiencing some troubles with VRayFastSSS2 shaders when the VRayPhysicalCam Motion Blur is on. If an object with that shader is excluded from (or not included in) a backlight (any kind of light with VRay properties), subsurface is treated anyway and appears weirdly. Kind of annoying if you have a complex lighting with several objects with SSS shaders ...

Thanks for your help

Here an example file: SSSMBTrouble.zip

Julien from CubeCreativeCompany.

[svetlozar.draganov]

Thank you very much for the feedback.
Would it be possible to show us what exactly is the difference between Motion Blur ON and OFF.
We got the same result with and without MB into our environment:


Let us also know the exact V-Ray version/service pack.

[CubeCreative]

Hi, here is a picture of the difference we are having. We are using 3dsmax 2012 and 2015, and VRay3.0, we've got the same troubles with VRay3.1.
This exemple comes from 3dsmax 2012 VRay3.0.


Thanks

Julien from CubeCreativeCompany.

[tashko.zashev]

Hi Julien,

Thanks for posting the render results.
There is a bug here and we are working on it. Light linkig is ignored for SSS2 and Skin material when camera motion blur is enabled.
We will update this topic when the fix is available in the builds.

[CubeCreative]

Hello,

Do you have any news about the fix ?

Thank you very much for your concern.

Julien from CubeCreativeCompany.

[vlado]

I hope it will be fixed for the next SP.

Best regards,
Vlado