Bevel doesn't work with some certain position of a loop. #91810
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Reference: blender/blender#91810
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System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1060 6GB/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 472.12
Blender Version
Broken: version: 2.93.3, branch: master, commit date: 2021-08-17 18:30, hash:
8b80d19f36Worked: (newest version of Blender that worked as expected)
Short description of error
[Bevel doesn't work with some certain position of a loop.
I can't remember how I did it, but for some reason, this loop doesn't allow doing the right bevel. If I little move it it will allow, but I spent a lot of time for searching what happens in my whole model. I have several of these kinds of issues. geometry and normals are right. ]
bug_5.blend
Exact steps for others to reproduce the error
[Please describe the exact steps needed to reproduce the issue]
[Based on the default startup or an attached .blend file (as simple as possible)]
Added subscriber: @Hrofti
#91811 was marked as duplicate of this issue
Added subscriber: @iss
Changed status from 'Needs Triage' to: 'Needs User Info'
Not sure how you end up with this example, but if I select all vertices and change Mean Bevel Weight in side panel this doesn't happen.
I think here we would need steps to reproduce the issue from good state, do you think you can cause this again? Also not sure if what are other similar issues you have.
I created the first segment. Marked bewel weight. Duplicated. Moved with snapping and automerge. Deleted inner parts. Recolcelated normals. STH like this
I see, that some edges have bevel weight of 0.5 and some 0. Checked duplicating geometry, merging with snapping and also recalculate normals operator, this doesn't lead to loss of bevel weight setting. Extrusion does produce edges with 0 bevel weight, but not sure if you used that operator.
Can you repeat the process and check what operation causes this?
I am not sure that it is this but I tried to reconstruct the bug. The step by step file bug_7.blend
Added subscriber: @PratikPB2123
Added subscriber: @mano-wii
Thanks for step by step file. I think this should work and when I move vertices a bit bevel is formed properly.
@mano-wii do you think this is bug? I will try to look at code to see if I would be able to tell but can't promise I will come to conclusion with great certainty.
Changed status from 'Needs User Info' to: 'Confirmed'
Added subscriber: @howardt
I investigated Mesh and the problem starts with the new edges created by the Knife operator. They have the
Bevel Weight0.0.Apparently the Bevel operator doesn't work properly with these
0.0weight edges.This looks like a bug because, in my opinion, these edges shouldn't affect the result this way.
@howardt should better understand what's going on here.
It is fine that some edges have Bevel weight 0.0. The user intended that here, using a limit method of weight to exclude the weight 0 edges from being beveled.
The problem here is that code added to fix #71329 messes this case up. When we aren't sliding (and with a good place to slide) and all intermediate non-beveled edges are in the same plane, then we should just ignore the intermediate edges when setting the meet point. This works but I've run into difficulties checking that #71329 remains fixed, so I have to fix a crash there first before fixing this bug.
This issue was referenced by
98fe05fb5bChanged status from 'Confirmed' to: 'Resolved'