I have a few problems in this picture :
Under the glass there is a black circle. How does it come there? There is no circle object or so under the glass.
How comes I don’t get caustics through the glass? I watched other sources, and I don’t see much difference in the glass setup then in mine. The interface is set up correctly too (i think).
So how can I resolve those problems?
The .py file is attached on the page.