Regression: Smooth shading artefacts with mirror modifier (in 3.5, 3.6 is fine, for corrective release) #106315

Closed
opened 2023-03-30 15:49:45 +02:00 by Ian Jones · 6 comments

System Information
Operating system: macOS-13.2.1-arm64-arm-64bit 64 Bits
Graphics card: Metal API Apple M1 Max 1.2

Blender Version
Broken: version: 3.5.0 Release Candidate, branch: blender-v3.5-release, commit date: 2023-03-25 21:10, hash: 16cb13b8a07c
Worked: 3.4.1
Works: 3.6 current main

Caused by dd9e1eded0 (in 3.5)

Apparently Fixed by cb62ab5b28 (not in 3.5)

Short description of error
Using the mirror modifier with smooth shaded meshes causes shading artefacts on the mirrorored side.

Exact steps for others to reproduce the error
Add the mirror modifier to an object that uses smooth shading.

**System Information** Operating system: macOS-13.2.1-arm64-arm-64bit 64 Bits Graphics card: Metal API Apple M1 Max 1.2 **Blender Version** Broken: version: 3.5.0 Release Candidate, branch: blender-v3.5-release, commit date: 2023-03-25 21:10, hash: `16cb13b8a07c` Worked: 3.4.1 Works: 3.6 current main Caused by dd9e1eded0d48e19a500233b20e8c5f18ed12a09 (in 3.5) Apparently Fixed by cb62ab5b28eae92b92068ac9e0e7b186b44db6d1 (not in 3.5) **Short description of error** Using the mirror modifier with smooth shaded meshes causes shading artefacts on the mirrorored side. **Exact steps for others to reproduce the error** Add the mirror modifier to an object that uses smooth shading.
Ian Jones added the
Priority
Normal
Type
Report
Status
Needs Triage
labels 2023-03-30 15:49:45 +02:00
Iliya Katushenock added this to the 3.5 milestone 2023-03-30 15:58:52 +02:00

Can't reproduce this in 3.6, only in 3.5.

Can't reproduce this in 3.6, only in 3.5.

Seems like sharp attribute corrupted by mirror modified.

Seems like sharp attribute corrupted by mirror modified.

I'm using this method temporarily
image

I'm using this method temporarily ![image](/attachments/53099fa7-12b7-4298-81c3-1e42451978dd)
Member

Will bisect this one

Will bisect this one
Member

Caused by dd9e1eded0 (in 3.5)

Apparently Fixed by cb62ab5b28 (not in 3.5)

CC @HooglyBoogly : mind checking if there is something we can add to #106258 ?

Caused by dd9e1eded0d48e19a500233b20e8c5f18ed12a09 (in 3.5) Apparently Fixed by cb62ab5b28eae92b92068ac9e0e7b186b44db6d1 (not in 3.5) CC @HooglyBoogly : mind checking if there is something we can add to #106258 ?
Philipp Oeser changed title from Smooth shading artefacts with mirror modifier to Regression: Smooth shading artefacts with mirror modifier (in 3.5, 3.6 is fine, for corrective release) 2023-03-31 12:02:49 +02:00
Hans Goudey self-assigned this 2023-03-31 13:02:30 +02:00
Hans Goudey added
Type
Bug
and removed
Type
Report
labels 2023-03-31 13:56:49 +02:00
Member

Resolved by 6fa464d189

Thanks for the report.

Resolved by 6fa464d18971477be2935ebf09c46b087575bbd0 Thanks for the report.
Blender Bot added
Status
Archived
and removed
Status
Confirmed
labels 2023-03-31 15:59:40 +02:00
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Reference: blender/blender#106315
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