Renaming of Vertex Groups not possible in complex projects #63650
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Reference: blender/blender#63650
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Blender Version
Broken: blender 2.80rc1
Worked: 2.79b
Short description of error
Renaming of Vertex Groups not possible in complex projects
Exact steps for others to reproduce the error
or
Added subscriber: @Hucky
#64824 was marked as duplicate of this issue
Added subscriber: @Dspazio
Can confirm on latest build. On lessen performant machines are specially remarkable (tested on centrino, 4gb RAM, intel iGPU). I tried "triple click" :D and it worked!. Seems related to some sort of buffer issue when blender is busy (this is purely speculative and can be erroneous). Thanks!
Added subscribers: @WilliamReynish, @ZedDB
I can confirm that I have to spam click to get it to rename. Without the heavy hair system, as simple double click will do.
@WilliamReynish feel free to reassign if this doesn't fall into the
UI
category.Added subscriber: @JacquesLucke
The problem is that there is some depsgraph update here. That evaluates the modifiers and therefore the hair as well.
It loops over all particles.
Feels like the issue is that the depsgraph is evaluated when one starts editing the name of the vertex group.
Added subscriber: @brecht
This is a task for a developer to fix, not a UI design issue I think.
Changing the vertex group name should update the dependency graph, because bones and vertex groups are linked by name. I think the problem is that the first click is for changing the active vertex group, which can affect the viewport in weight paint mode for example.
There are a few things that could be improved here:
This is probably related: #63537
Added subscriber: @finnb
Am I correct that that the operation of renaming has two parts:
If I understand correctly, (2) is the only thing that needs a non-UI update.
The issue is that on double click two different things are done:
It's not the renaming that's the problem, but the making active that happens right before that.
Added subscriber: @mano-wii
I can confirm in blender 2.83
In the attached file, if you add a second vertex group and try to switch the selection, you may notice a delay that may be related.
Added subscriber: @lichtwerk
I have updated #40009 (Double click list renaming not working on heavy scenes) with the relevant comment from this report, but this one is really a duplicate, will merge.
Closed as duplicate of #40009