Maniphest T47041

Mirror modifier doesn't preserve custom normals
Closed, Archived
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Assigned To
Bastien Montagne (mont29)
Authored By
Stanislav Blinov (radcapricorn)
Dec 22 2015, 6:06 PM
Tags
  • BF Blender
Subscribers
Bastien Montagne (mont29)
Stanislav Blinov (radcapricorn)

Description

System Information
Linux 64 bit, NVIDIA GTX560

Blender Version
Broken: 2.76b

Short description of error
Using mirror modifier on a mesh with custom normal results in distorted normals on generated geometry.

Exact steps for others to reproduce the error

  1. Open
    custom_normals_mirror.blend87 KBDownload
  2. Observe strange shading on the geometry generated by the Mirror Modifier.
  3. Apply Mirror Modifier and enter edit mode to see normals on the new geometry.

Related Objects

Event Timeline

Stanislav Blinov (radcapricorn) created this task.Dec 22 2015, 6:06 PM
Stanislav Blinov (radcapricorn) raised the priority of this task from to 90.
Stanislav Blinov (radcapricorn) updated the task description.
Stanislav Blinov (radcapricorn) added a project: BF Blender.
Stanislav Blinov (radcapricorn) edited a custom field.
Stanislav Blinov (radcapricorn) added a subscriber: Stanislav Blinov (radcapricorn).
Bastien Montagne (mont29) changed the task status from Unknown Status to Unknown Status.Dec 22 2015, 8:38 PM
Bastien Montagne (mont29) claimed this task.
Bastien Montagne (mont29) added a subscriber: Bastien Montagne (mont29).

Thanks for the report, but this is known limitation of clnors currently - no generative operation will work correctly with those… Not considered a bug, clnors are currently expected to be used as 'last step' of modeling process, otherwise you'll get all kind of weird effects.

Stanislav Blinov (radcapricorn) mentioned this in T71488: Flipping Custom Split Normal Data leads to artifacts.Nov 12 2019, 4:32 PM