backlit shadows on translucent material

I would like to create shadows on a translucent surface from behind. This would be similar to a puppet show in which the light and object is behind the screen and the shadow of the object appears on the front of the surface. I’ve been able to make the translucent material and from behind I can cast an object’s shadow using a spotlight onto the surface (in path tracing), but the front of the surface does not show the shadow. Any suggestions? Thanks

Hi @LordLally! Welcome to the forums!

If your translucent object is not transparent, it might be better to do use a custom depth to accomplish your goal and mimic shadows being cast through an object. Here is a great non-Epic affiliated tutorial on the basics of how to do that!

Unreal Engine 4 Tutorial - Custom Depth

I hope the above solution works for you!