Extruded vertex from subdivion surface shows edge incorrectly in viewport #60408

Closed
opened 2019-01-10 22:56:12 +01:00 by Daniel queen · 9 comments

System Information
Operating system: Ubuntu 18.04
Graphics card: nvidia gt650m

Blender Version
Broken: version: 2.80 (sub 40), branch: blender2.7, commit date: 2019-01-08 23:33, hash: 3c3d80ea22, type: Release
Worked: 2.79b

Extruded vertex from subdivided mesh (with shrinkwrap modifier + edit cage) shows many vertices instead of extruded one. Distortion in edge plus vertex extruded from. Seen in retopology workflows.

Reproduction:
Create simple sculpted mesh to retop over.
Create plane, enable snap to face, project + align.
Add subD modifier (3 levels in view), add shrinkwrap modifier, pick sculpt, above surface, offset .01
Align plane over sculpt as in retop workflow.
Extrude vertex, edge shows weirdness.

(pushing through and creating full face, corrects error. unfinished faces all show error.

Included .blend file. easier to see than explain. also side by side screenshot (left side = 2.79, right = 2.8).blender_extrude_bug.jpg

retop_bug2.blend

**System Information** Operating system: Ubuntu 18.04 Graphics card: nvidia gt650m **Blender Version** Broken: version: 2.80 (sub 40), branch: blender2.7, commit date: 2019-01-08 23:33, hash: 3c3d80ea22af, type: Release Worked: 2.79b Extruded vertex from subdivided mesh (with shrinkwrap modifier + edit cage) shows many vertices instead of extruded one. Distortion in edge plus vertex extruded from. Seen in retopology workflows. Reproduction: Create simple sculpted mesh to retop over. Create plane, enable snap to face, project + align. Add subD modifier (3 levels in view), add shrinkwrap modifier, pick sculpt, above surface, offset .01 Align plane over sculpt as in retop workflow. Extrude vertex, edge shows weirdness. (pushing through and creating full face, corrects error. unfinished faces all show error. Included .blend file. easier to see than explain. also side by side screenshot (left side = 2.79, right = 2.8).![blender_extrude_bug.jpg](https://archive.blender.org/developer/F6245365/blender_extrude_bug.jpg) [retop_bug2.blend](https://archive.blender.org/developer/F6245369/retop_bug2.blend)
Author

Added subscriber: @crono782

Added subscriber: @crono782

#60562 was marked as duplicate of this issue

#60562 was marked as duplicate of this issue
Member

Added subscribers: @Sergey, @JacquesLucke

Added subscribers: @Sergey, @JacquesLucke
Member

Screenshot from 2019-01-11 11-35-15.png

subdiv edge.blend

Not sure why multiple vertices are showing, still checking that.

![Screenshot from 2019-01-11 11-35-15.png](https://archive.blender.org/developer/F6252261/Screenshot_from_2019-01-11_11-35-15.png) [subdiv edge.blend](https://archive.blender.org/developer/F6252267/subdiv_edge.blend) Not sure why multiple vertices are showing, still checking that.

Added subscriber: @capnm

Added subscriber: @capnm

It's broken since switching to OpenSubdiv (9abcf56fa8)

It's broken since switching to OpenSubdiv (9abcf56fa8)
Member

Added subscriber: @rendetto

Added subscriber: @rendetto
Sergey Sharybin was assigned by Jacques Lucke 2019-01-16 15:14:09 +01:00

This issue was referenced by c4be1f861b

This issue was referenced by c4be1f861b39b2432a2777d48d38b3ce317e1638

Changed status from 'Open' to: 'Resolved'

Changed status from 'Open' to: 'Resolved'
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Reference: blender/blender#60408
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