The Mirror Modifier does not mirror custom normals #106516

New Issue

Jordan-Rivera · 2023-04-04T01:52:26+02:00

Jordan-Rivera commented

2023-04-04 01:52:26 +02:00

System Information
Operating system: Windows 10 Home
Graphics card: Nvidia GeForce RTX 3070

Blender Version
Broken: 3.5
Worked: 3.4.1

Short description of error
In Blender 3.5 when using the sharp edges to create custom face normals with the mirror modifier, the meshes do not mirror the same data if Auto Smooth is enabled. It will randomize the normals of the mirrored mesh when switching between Object and Edit modes or messing with any of the modifier settings.

Exact steps for others to reproduce the error
I've included a .blend file with the problem in question but to replicate the problem do the following:

Create a cylinder mesh, it shouldn't matter that much what the fill cap is.
In edit mode, create sharp edges around the top and bottom edges only to the rims.
Set the mesh to Shade Smooth.
While in Edit mode use face selection to select by sharps.
Use Alt + N to bring up the normals menu and select "Set From Faces" and go to the bottom left corner and enable "Keep Sharp Edges".
Offset the mesh in the X axis.
In the modifiers tab choose "Mirror Modifier"

**System Information** Operating system: Windows 10 Home Graphics card: Nvidia GeForce RTX 3070 **Blender Version** Broken: 3.5 Worked: 3.4.1 **Short description of error** In Blender 3.5 when using the sharp edges to create custom face normals with the mirror modifier, the meshes do not mirror the same data if Auto Smooth is enabled. It will randomize the normals of the mirrored mesh when switching between Object and Edit modes or messing with any of the modifier settings. **Exact steps for others to reproduce the error** I've included a .blend file with the problem in question but to replicate the problem do the following: 1) Create a cylinder mesh, it shouldn't matter that much what the fill cap is. 2) In edit mode, create sharp edges around the top and bottom edges only to the rims. 3) Set the mesh to Shade Smooth. 4) While in Edit mode use face selection to select by sharps. 5) Use Alt + N to bring up the normals menu and select "Set From Faces" and go to the bottom left corner and enable "Keep Sharp Edges". 6) Offset the mesh in the X axis. 7) In the modifiers tab choose "Mirror Modifier"

2023-04-03 18-01-39.mp4

65 MiB

system-info.txt

25 KiB

mirror modifier bug report.blend

120 KiB

Jordan-Rivera added the

labels 2023-04-04 01:52:27 +02:00

Iliya Katushenock commented

2023-04-04 07:15:37 +02:00

Hello, there were already many such reports yesterday, so I'm sorry I didn't check yours. It's most likely a duplicate too #106315 and already fixed, can you check it in the latest 3.6 build?

Hello, there were already many such reports yesterday, so I'm sorry I didn't check yours. It's most likely a duplicate too https://projects.blender.org/blender/blender/issues/106315 and already fixed, can you check it in the latest 3.6 build?

Philipp Oeser commented

2023-04-04 09:37:35 +02:00

Should be fixed now in the 3.5.1 candidate build from https://builder.blender.org/download/daily/

So this is a duplicate of #106315 will close (since it is now fixed).
Of course feel free to comment again if issues persist in such fresh build and also note this will be part of the upcoming 3.5.1 corrective release.

Should be fixed now in the 3.5.1 candidate build from https://builder.blender.org/download/daily/ So this is a duplicate of #106315 will close (since it is now fixed). Of course feel free to comment again if issues persist in such fresh build and also note this will be part of the upcoming 3.5.1 corrective release.

Philipp Oeser closed this issue

2023-04-04 09:37:36 +02:00

Blender Bot added

and removed

labels 2023-04-04 09:37:37 +02:00

Philipp Oeser added

Status

Duplicate