One question, can this (or a similar technique be used to "smooth" out other hard transitions? In particular I am thinking of the merge node.
When this is set to "Choose by Altitude <highest (raise)/Lowest (cut away)>" it creates very HARD transitions between the two merged terrains. It would be great if these could be smoothed off
I just made a test with two fractal terrains and a merge shader. This time I didn't use the high/low colour options to generate the terrains.
But I added a "displacement shader to scalar" to each fractal terrain.
Just take a look to the following file, and try to render with the following values for c : 0, 100 and 200.
Then tell me if it is what you are looking for.