Regression: When making a collection real, curves with depth in the collection are instantiated twice #99088
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Reference: blender/blender#99088
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System Information
Operating system: Windows-10-10.0.19044-SP0 64 Bits
Graphics card: NVIDIA GeForce RTX 3070 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 512.77
Blender Version
Broken: version: 3.2.0, branch: master, commit date: 2022-06-08 10:22, hash:
e05e1e3691
Broken: 3.0
Worked: 2.93
Caused by
b9febb54a4
Short description of error
when making a collection real, curves where geometry/bevel/depth is not zero are created twice.
curves that do not have this property set are only created once.
Exact steps for others to reproduce the error
curves_file.blend
What should happen
What happens
this also is the case, when exporting the instanced collection, without making it real
Added subscriber: @thomason1005
#101629 was marked as duplicate of this issue
Changed status from 'Needs Triage' to: 'Confirmed'
when making a collection real, curves appear duplicatedto When making a collection real, curves with depth in the collection are instantiated twiceWhen making a collection real, curves with depth in the collection are instantiated twiceto Regression: When making a collection real, curves with depth in the collection are instantiated twiceAdded subscribers: @HooglyBoogly, @lichtwerk
Caused by
b9febb54a4
I know some of the consequences of that commit have been "accepted" as Known Issues, I am not sure this issue reported here should (or could not be prevented) @HooglyBoogly ?
Will set to High prio since it is a regression until further notice by the module.
Added subscriber: @ThomasDinges
Blender 3.2.1 is scheduled for release soon. Any chance to fix this still? @HooglyBoogly
I'm not sure I see a clear way to fix this at the moment, nothing I'd think of safe enough for 3.2.
I think there are two ways to solve this:
InstancesComponent
of the evaluated geometry set.Personally I prefer the second approach. The first is working around the problem and ending up with something more complicated and fragile, the second seems like a real step forwards in the features we want to support in this area (realizing geometry instances to objects, etc).
The problem with that approach is that the instances from the "Instances" panel aren't included in the
InstancesComponent
. However, we've talked about versioning away that panel for a while. Maybe now is the time to look into that...EDIT: The task for that last part: #105321
Added subscribers: @The5, @mano-wii
For this bug, since it can be worked around relatively easily, I think I will wait to implement the fix with the second option I mentioned. In the meantime I'll make this a known issue, because I don't know exactly when we'll be able to do that.