Negative displacement

[kubbek]

How could I create negative displacement, to push geometry inside the object? In material properties you cannot input negative value and when I put it in V-Ray object properties it doesn't work.

[vladimir.nedev]

One way to do it, that should work in MODO and V-Ray would be to remap the values of the displacement map.
If it is an image map, just set the "low value" to 0 and the "high value" to -1.

Or set the "displacement amount" to -1 in the V-Ray Geometry Properties. This amount is actually a multiplier for
the amount coming from the material.

Greetings,
Vladimir Nedev

[kubbek]

Thank you Vladimir. Both ways do work. Initialy I have problem with it, because checking "invert" for displacement texture gave another results. I had to invert this texture in Photoshop and now it works.