Landscape Splatmap Blending


After making a splatmap from my World Machine terrain to separate grass and rock, I apply the greyscale map under the rock layer info. This gives me grass and rock where I want it to be. The question I can’t seem to finding anything on, is how to use my grass/rock height maps to better blend at the black/white transitions between grass and rock, so it’s not just an unnatural hard cutoff.