This is more like smooth round rather than smooth floor, but maybe you can work with it: https://www.desmos.com/calculator/t8ev8mqdls a = number of steps b = sharpness it runs into problems with a "sharpness" value below 15.
A terrain + a skin shaders in the examples shaders would be very very nice. Perhaps in the 1.0? I had a problem with the alpha 15. The tessellation shader does not work. Just a black-mate material show in the scene. Console warning: Shader warning in 'Shader Forge/Examples/TessellationDisplacement': Program 'tessvert',…