My erosion filter is out! Video, blog post, and shader source.
It emulates erosion without simulation, so it's fast, GPU friendly, and trivial to generate in chunks.
Explainer video:
https://www.youtube.com/watch?v=r4V21_uUK8Y
Companion blog post:
https://blog.runevision.com/2026/03/fast-and-gorgeous-erosion-filter.html