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Dynamic Paint sub-steps doesn't work with particles
Confirmed, NormalPublic

Description

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 457.51

Blender Version
Broken: version: 2.93.0 Alpha, branch: master, commit date: 2021-02-08 23:42, hash: rBeab9165c2512

Short description of error
When using a particle system as a dynamic paint brush, the sub-steps setting of the canvas doesn't work. The sub-steps appear to work as intended with all other brush types. Whether the painting is done with vertex or texture maps doesn't seem to have an impact on the bug.

Exact steps for others to reproduce the error

  • Open attached .blend
  • Bake the dynamic paint cache with a sub-steps value > 0
  • The result shows no sub-steps

Event Timeline

Philipp Oeser (lichtwerk) changed the task status from Needs Triage to Confirmed.Wed, Feb 10, 6:52 PM

Looks like this is just not implemented, BKE_object_modifier_update_subframe is doing nothing special for particle systems.

So this might not be a bug in the end maybe a Known Issue?
Will confirm for now though.