Maniphest T71194

Weird face dots in UV editor with cage mode on of subdivision modifier.
Closed, Resolved
Actions

Assigned To
Campbell Barton (campbellbarton)
Authored By
Souvik Karmakar (souvik)
Oct 29 2019, 4:24 PM
Tags
  • BF Blender
Subscribers
Philipp Oeser (lichtwerk)
Souvik Karmakar (souvik)

Description

System Information
Operating system: Win 10 pro
Graphics card: Nvidia Gtx 960

Blender Version
Broken: 2.81 (sub 16), branch: master, commit date: 2019-10-28 18:34, hash: 7c1fbe24ca33, type: Release
Worked: (optional)

Short description of error


As you can see in this screenshot I am having weird face dots position in uv editor in cage mode on of subdivision modifier. If I uncheck cage mode face dots appear properly.
Exact steps for others to reproduce the error
Just turn on cage of subdivision modifier and see where the face dots goes in uv editor.

Example file

Face_dot_issue.blend802 KBDownload

Revisions and Commits

rB Blender
rB5cf5dfcfadf5 Fix T71194: UV Face centers wrong location with sub-surface mesh

Event Timeline

Souvik Karmakar (souvik) created this task.Oct 29 2019, 4:24 PM
Souvik Karmakar (souvik) assigned this task to Campbell Barton (campbellbarton).Oct 30 2019, 6:44 PM
Campbell Barton (campbellbarton) lowered the priority of this task from 90 to 30.Oct 30 2019, 7:43 PM

Please include blend file.

Souvik Karmakar (souvik) raised the priority of this task from 30 to 90.Oct 30 2019, 8:15 PM
Souvik Karmakar (souvik) updated the task description.

Example file added to the descriiption.

Philipp Oeser (lichtwerk) added a subscriber: Philipp Oeser (lichtwerk).Oct 30 2019, 8:32 PM

Looks like corrupt geometry, getting a bunch of these, needs more investigation

Invalid Index: at /blender/source/blender/bmesh/intern/bmesh_mesh.c:1717, BM_mesh_elem_index_ensure_ex, vert[2011] invalid index 15, 'Should Never Fail!', 'BM_mesh_elem_index_ensure_ex
Souvik Karmakar (souvik) added a comment.Oct 30 2019, 8:53 PM
In T71194#803583, @Philipp Oeser (lichtwerk) wrote:

Looks like corrupt geometry, getting a bunch of these, needs more investigation

Invalid Index: at /blender/source/blender/bmesh/intern/bmesh_mesh.c:1717, BM_mesh_elem_index_ensure_ex, vert[2011] invalid index 15, 'Should Never Fail!', 'BM_mesh_elem_index_ensure_ex

We can also see it in suzzane.Subsurface modifier with cage on and in uv editor face select mode on.

Suzanne.blend734 KBDownload

Philipp Oeser (lichtwerk) added a comment.Oct 30 2019, 9:32 PM

Not sure what was wrong, not getting the invalid index anymore, need to look at this with a fresh eye...

Campbell Barton (campbellbarton) changed the task status from Unknown Status to Resolved by committing rB5cf5dfcfadf5: Fix T71194: UV Face centers wrong location with sub-surface mesh.Nov 8 2019, 12:19 PM
Campbell Barton (campbellbarton) added a commit: rB5cf5dfcfadf5: Fix T71194: UV Face centers wrong location with sub-surface mesh.