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Black Artifacts While Using Adaptive Subdivision
Open, Needs Triage by DeveloperPublic


System Information
Operating system: Windows-10-10.0.18362 64 Bits
Graphics card: GeForce GTX 1080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 436.15

Blender Version
Broken: version: 2.80 (sub 75), branch: master, commit date: 2019-07-29 14:47, hash: rBf6cb5f54494e

Short description of error
Black artifacts on edges of geometry while using adaptive subdivision. I was trying to duplicate my workflow from other 3d software. Extruding geometry from 2d curves creates extra edges on the model. And extra edges create weird shadows on displacement.

Exact steps for others to reproduce the error
Import curve from dxf file. Use extrude Object Data > Geometry. Fill mode: Both. Use subdivision and displacement.



Event Timeline

Enes Aydoğan (enesaydogan) renamed this task from Black Artifacts while using Adaptive Subdivision to Black Artifacts While Using Adaptive Subdivision.

You have long triangles in your geometry. Displacement works best when you got nice, even wire frame. You could for example try using "Remesh" modifier.