I’m having an issue with rendering some spotlights… I would like them to shine from the bottom up on some surfaces and extrusions, but it seems that they don’t show when I render, they are however showing in the perspective viewport. If the spotlights are more directly facing what I want to light, then it renders fine. I don’t have a lot of experience with lights so can’t tell if this is some weird bug or if there is an explanation I am missing. Tried to mess with some light and shadow settings but didn’t seem to make it work. Ive attached a couple screen shots and a sample file.
Raytraced viewport mode is the same engine as Rhino Render. In my case I have set viewport sharpness a couple of notches lower to keep it responsive. But it should give you a good idea of how the final render will look like.