Tser

noicevstime
Hi! Any possibility to see a demo video to see how it is working?

Yep...

You can add deformations to the grid to simulate rough terrain...

Mirko Jankovic
"All you need is a Grid to catch the Shadows, an Environment image (eg. HDRI) to cast the rays and Objects you want to cast Shadows from."

Just to check, catcher can only be grid or it can be any other object in the scene as well?
I mean wording seems a bit exclusive to grid so figured to check.

Catcher was designed on a Grid and the algorithm automatically trims up the Grid like trimming off fat from a piece of steak, but, I created a sphere Radius 50x10x50 Center 0x-10x0 with Rows/Columns = 50 and used it instead of the Grid and it worked, as you can see, the underside of the squashed sphere also catches the Shadow, I don't think it would be a good idea to have a 3D object catching the Shadows, but a 2D object (without a bottom) would be fine: