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Fluvial erosion is a "secondary" erosion. It is most useful when applied on top of an already eroded surface, or when you need light erosion where carving is more important than sedimentation.


Node Properties
SettingDescription
DurationThe number of erosion cycles to simulate. Usually 200 is sufficient.
PowerThe strength of the erosion.
GranularityWhether debris should be fine like dust, or coarse like rocks and even boulders.
BasLenThe sub-simulation length of each particle.
RadiusThe area affected by each particle.
RandomThe randomness of each particle's motion.
SeedThe randomization pattern or seed for the node's process.

Enable Parallel ProcessingEnable multi-CPU processing of the effect.
Chunk SizeThe chunk size into which the image is divided for processing.
Edge BlendingThe percentage of blending between the edges of neighboring chunks. Higher values require more memory and processing time.

If you see grid-like artifacts in your output, use higher values for Edge Blending. If that does not help, try increasing Chunk Size. If either does not help, you can disable Parallel Processing. This may result in slower builds, but the result will be accurate and error free.