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Bevel + Subsurf + Edge Crease = jagged edges
Closed, ResolvedPublic


I've noticed a strange artifact that happens under three conditions:

  1. All the edges of a mesh have at least minimum Edge Crease to them.
  2. There's a Bevel modifier with non-zero width (it has to actually modify the geometry)
  3. There's a Subsurf modifier (Catmull-Clark, at least 1 Subdivision) after the Bevel

The artifact seems to appear on certain border edges, it can be removed by setting the Edge Crease to 0 for that particular edge:

Here all edges have full Edge Crease:

Here the problematic edges have Edge Crease of zero:

I attach a test .blend file:



Event Timeline

mathieu menuet (bliblubli) triaged this task as Confirmed, Medium priority.

Can confirm the behavior. Really looks like a bug indeed. It only happens when the bevel modifier is activated, so I'll let @Howard Trickey (howardt) decide.

Howard Trickey (howardt) closed this task as Resolved.Jan 30 2018, 3:53 AM

I don't see this problem any more (in master compiled today), so I'm closing this bug. Feel free to reopen if I've misinterpreted.