Not showing object behind glass

[maxie1059]

I am trying to render the teapot behind a slab of glass. Here is my code.

My question is: If I look over the slab of glass, of course I would see the teapot. Would I be able to output an image without seeing the teapot behind even if I look over the slab of glass? I tried using path with different max_depth but because the ray have not transmitted through the glass yet, leading to unseeable object on the glass.

[njroussel]

Hi @maxie1059

You would need to write a custom integrator to ignore light paths where the first segment does not hit your glass slab. I can't really think of any other way to do this cleanly.

[maxie1059]

Thank you for your suggestion! I will try writing such integrator.