Derek Kirk shows a way to get that infinite floor look with Redshift in Cinema 4D.
Check out this new tutorial from Derek Kirk (Effectatron) that shows how you can get that infinite floor look when using Redshift Renderer in Maxon Cinema 4D.
Original infinite floors went out the door when physical rendering took the reigns; it doesn’t make sense to make that kind of computation. However, suppose you want to get that look in your render. In that case, you can use a much better-suited technique of utilizing a cyclorama, which Kirk shows in this tutorial.