http://terrafgen.free.fr//Downloads/WM1/Flow_Map_Processing.dev
Here’s a very simple macro (2 devices inside ;))
When I use a terrain with erosion, I often use the flow map (second output of the Erosion device) as an overlay, like in this image.
The problem with the flow map output is that it’s not a very bright heightfield, and it has to be processed in order to get a usable overlay.
The aim of this macro is to process the flow map directly into WM, using the high precision heights (instead of processing the BMP overlay).
Don’t forget to read the macro documentation.
English is not my mother tongue, so if you have any suggestion for the parameters name, the macro name, its documentation, or if you have questions, don’t hesitate to reply to this thread.
P.S.: just a suggestion, if you’re building your terrain using full memory conservation mode : save the untouched flow map as a .ter, then use the macro on a new world with a File Input that import this .ter. It will prevent you from having to build the terrain several times if the macro result doesn’t satisfy you.