The Geo Texture functionality of the MicroSplat Global Texturing module is awesome. Only thing that left me wondering was about how to create gradient images for the geo texture image property of the module. World Creator 2 has a similar functionality and I like that feature of it as well very much. So I thought I’d quickly code a little helper tool to create such gradient images.
The tool is Open Source. If you have use for it with your Unity Assets, feel free to download it from this github repository:
Here is an example use case inside Unity. The terrain texture consists of 1 single texture image combined with a gradient image in MicroSplat Global Texturing.
Screenshot of the app in use with the MicroSplat export option:
Have fun texturing your terrains 
ps: I hope Unity decides at some point in the not too distant future to extend the number of keys in their gradient from 8 to, well way higher. Resampling such a gradient image in order to convert it to a Unity gradient would be trivial. But 8 is a tad too low to be useful for such a feature.