Volumetric pass behind glass

Corona Corona for 3ds Max Help Required
1

Hi all,
I am working on an interior image with a big window (double glazing with thickness). Outside I have a a box for my fog.
I am trying to get the fog visible on my volumetric pass but the glass in front won’t let me see it…all black.
I have tried to make the glass not visible to masks…but this won’t solve the problem. I would love to render the image just once…is it possible?

Thanks a lot!

F

2

As far as I know it will only work with thin mode enabled. Are you working on a scenario where that isn’t acceptable?

3

Thanks for your help. Luckily the camera is perpendicular to the windows, therefore, I have turned the refraction off and used the thin option…all sorted now but it would be good to have the chance to make a surface invisible on a particular render pass…

Thanks again!

F