I’m trying to make a scene in which light is falling inside the room through a window and I want the outline of the window frame visible inside the room as in the picture.
The light outside the room is making shadows without the glass but when I add a glass panel on the window the light gets diffused. The room gets lit up evenly but I just want the sharp window frame to be visible as a shadow.
How do you make a simple thin plain glass?
Other details: Transparent shadows is turned on and rendering using cycles. Glass made with a single plane with PBSDF transparency 1.0 and roughness 0.