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Mesh not load normal
Open, Confirmed, MediumPublic


System Information
Operating system: Windows 10 Pro
Graphics card:
renderer: 'GeForce 920M/PCIe/SSE2'
vendor: 'NVIDIA Corporation'
version: '4.5.0 NVIDIA 417.71'

Blender Version
version: 2.80 (sub 44), branch: blender2.7, commit date: 2019-02-08 22:09, hash: 191b8951f7af, type: Release
build date: 08/02/2019, 17:56

Short description of error
It does working with Blender version:
version: 2.80 (sub 32), branch: blender2.8, commit date: 2018-11-20 01:37, hash: 9a1796797e8, type: Release
build date: 19/11/2018, 17:47

But NOT Working with the latest blender version.

Blender File:



Event Timeline

Jacques Lucke (JacquesLucke) triaged this task as Confirmed, Medium priority.

The issue seems to be the combination of the subdivision and mesh deform modifier.

My initial guess is that the subdivision modifier produces a different vertex order now, could be wrong though.

@Sergey Sharybin (sergey), do we guarantee a certain vertex ordering in the Subsurf modifier? If not, then a Mesh Deform modifier should never be used after a Subsurf modifier. Does this make sense?

@Jacques Lucke (JacquesLucke), order of vertices in Subdiv Modifier is well defined. The issue is that the order got changed after switch from from old CCGSubdiv to the OpenSubdiv.

I've stated this in the release notes:

Not sure how doable it is to auto-rebind, or how important is that to look into. @Brecht Van Lommel (brecht) ?

We can't auto-rebind, binding can take minutes for high res meshes so not something we want to run automatically.

I think the mention in release notes is enough.