transparency onto a bumpmap or a displacement

[derPotz]

Hi there!
I´d like to fade out the bump texture to the top of the glass (since condensation stops where the cold liquid inside ends). Is there a way to apply some sort of transparency map to define where are more or less drops?
Thank you dear Forum
_Lars

[INNEO_MWo]

You can drive through a fade texture and a color-to-number node the bump height. Or you can use the fade texture as a mask to clip the bump texture.
You will see this solution in the ice glass scene from the default scenes in the library.


Hope that helps.


Cheers
Marco


P.S. written with a mobile device so I can't share an example scene