How to get Sun Reflection from Mirror on Floor?

This image is made with Rhino6 render using a plaster material on the ground plane.
The Rhino sun’s rays should be reflected in the mirror to the floor.
Any suggestions on how to achieve this?

Hello - this (reflected/refracted light sources) requires caustics, which is not supported (yet). I You may be able to fake it with a light placed at the correct angle…


Dear mr Golay,

Thanks very much for your kind reply.

And then link the light to the Sun angle and the time of the day with Grasshopper…

Kind regards