Roughen up mask edge

I’m building a landscape material using weight blended landscape layers, blended by splat maps imported from World Machine.
The problem is that those masks are too straight and pixelated so I want to roughen them up using a noise, I just don’t know how to.
This is what they look like right now

I’m sampling this mask using the Landscape Layer Sample node.
I can’t just warp the UV coords of this layer mask because the UVs are assigned automatically, I just select what texture to use as mask in the landscape layer settings.

I believe this explains it:

[quote=“ClockworkOcean, post:2, topic:157697”]

I believe this explains it:[/QUOTE]

Thanks a lot this is what I was looking for! Very nice channel, lots of very informative tutorials!

This video explains what I wanted to do in detail