Data Transfer Modifier for UV transfer strange result after apply #77804
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Reference: blender/blender#77804
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System Information
Operating system: Windows 10
Graphics card: GeForce MX310
Blender Version
Broken: Blender 2.83.0
Worked: unknown
Short description of error
The Transfer Data Modifier behave unexpectedly after hitting the Apply button, I tried to transfer the UV map between two meshes.
Exact steps for others to reproduce the error
Based on the attached .blend file. The preview of ADA_P_PancakeUnicornb.001 before applying the modifier looks expected. But the UV map becomes distorted after Apply. Make sure you are on the Material Preview Mode to see the texture difference.
Transfer_Data_error.blend
Added subscriber: @JohanTriHandoyo
Added subscribers: @ideasman42, @mano-wii
I don't think it's a bug.
It is to be expected that applying modifiers that are not at the top of the stack will have a different result.
But I can't investigate properly because of this "assert" in the code:
This assert appears when I try to delete the subdiv modifier or add another one.
@ideasman42, do you know what this assert is for?
Added subscriber: @iss
Changed status from 'Needs Triage' to: 'Archived'
This is not unexpected indeed. There is even message
Info: Applied modifier was not first, result may not be as expected
If I apply subdiv modifier first, there is no such error.
Added subscriber: @3di
I get that strange result before applying: