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Smooth Filter applies a Gaussian blur to the mask, softening sharp transitions left by previous filters. It does not add or remove spawn areas on its own — it only blurs the boundaries of the existing mask, making transitions more gradual and natural.

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Settings

  • Blur Radius — the size of the blur kernel. Larger values produce a wider, softer blur. Range: 0–10. Default is 1.
  • Verticality — controls the directional bias of the blur:
    • 0.0 — blurs equally in all directions.
    • 1.0 — blurs only upward (raises the mask edge upward).
    • -1.0 — blurs only downward (lowers the mask edge downward).
Place this filter after a Height Filter or Slope Filter to soften the boundary edges of those masks before multiplying with other filters.