Hi,

I am working in an architectural interior visualization where I have a window I look through into a exterior landscape.

1.I have created the Physical Sun and Sky.
2.Physical Sky background is checked and no background image was set in order to get the alpha and compose it afterwords in photoshop.
2.Window glass material is set to "thin wall" and "propagate alpha".
4. Render settings "pass custom alpha" is checked.

Besides that what I get is an image where the glass still gets refractions from mia_physicalSky.

I now this is a known issue, but I was wondering if there is any workaround keeping this light set up. Below there is a forum talking about it but they use 3d max and I get a little bit lost.

https://forum.nvidia-arc.com/showthre...rency-problems


Thanks for your time and any help