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Subdivision Surface modifier performance issues
Open, Confirmed, MediumPublic

Description

System Information
Operating system: Xubuntu 18.04
Graphics card: Nvidia Titan X (Pascal)

Blender Version
Broken: 2.80 26d5a3625ed
Worked: Before the new "Quality" setting was introduced in the Subdivision Surface modifier

Short description of error
The Subdivision surface modifier has slowed down significantly, especially noticable with multiple Subdivision Surface modifiers on the same object.
Creating the same setup in the builds before the new setting is as fast as 2.79.

Exact steps for others to reproduce the error

  • Create Monkey object
  • Add Subdivision Surface modifier
  • Add Wireframe Modifier
  • Add second Subdivision Surface modifer

Details

Type
Bug

Event Timeline

Sebastian Parborg (zeddb) triaged this task as Confirmed, Medium priority.

Worked: Before the new "Quality" setting was introduced in the Subdivision Surface modifier

It was introduced after the enabling of OpenSubdiv (rB9abcf56fa8)

I've elaborated a bit more on this issue in a devtalk post, as not to clutter the bug tracker too much.
Here's the full post for anyone interested: https://devtalk.blender.org/t/opensubdiv-issues-with-large-and-complex-meshes/5534