Data Transfer Modifier is not copying UVs #79496

New Issue

Jaimi McEntire · 2020-08-03T23:30:05+02:00

Jaimi McEntire commented

2020-08-03 23:30:05 +02:00

System Information
Operating system: Windows-10-10.0.18362-SP0 64 Bits
Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 432.18

Blender Version
Broken: version: 2.83.3, branch: master, commit date: 2020-07-22 06:01, hash: 353e5bd749
Worked: Unknown

Short description of error
Data transfer modifier. Transfer of UV does not work.

Exact steps for others to reproduce the error
I am attempting to transfer the UV mapping from one set of eyes to another.
Load up the attached blend file.
Select UMA_Human_Female_Eyes.
The Data Transfer modifier is already applied. It is copying from "EyeAdvanced_LOD0".
Check "Face corner data". Select "Nearest Face Interpolated" or "Projected Face Interpolated".
Select "UVs". Select "All Layers" or "UVChannel_1".
Make sure "Mix Mode is "Replace".
(Notice that "Face Data was automatically selected.)
Press "Generate Data Layers". It pauses. Nothing is transferred.
You can verify this by looking at the UV layout of UMA_Human_Female_Eyes, which is deliberately off center.B283DataTransferBug.blend

**System Information** Operating system: Windows-10-10.0.18362-SP0 64 Bits Graphics card: GeForce GTX 1060/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 432.18 **Blender Version** Broken: version: 2.83.3, branch: master, commit date: 2020-07-22 06:01, hash: `353e5bd749` Worked: Unknown **Short description of error** Data transfer modifier. Transfer of UV does not work. **Exact steps for others to reproduce the error** I am attempting to transfer the UV mapping from one set of eyes to another. Load up the attached blend file. Select UMA_Human_Female_Eyes. The Data Transfer modifier is already applied. It is copying from "EyeAdvanced_LOD0". Check "Face corner data". Select "Nearest Face Interpolated" or "Projected Face Interpolated". Select "UVs". Select "All Layers" or "UVChannel_1". Make sure "Mix Mode is "Replace". (Notice that "Face Data was automatically selected.) Press "Generate Data Layers". It pauses. Nothing is transferred. You can verify this by looking at the UV layout of UMA_Human_Female_Eyes, which is deliberately off center.[B283DataTransferBug.blend](https://archive.blender.org/developer/F8742522/B283DataTransferBug.blend)

Jaimi McEntire commented

2020-08-03 23:30:06 +02:00

Added subscriber: @jaimi

Philipp Oeser commented

2020-08-04 15:49:17 +02:00

Added subscriber: @lichtwerk

Philipp Oeser commented

2020-08-04 15:49:17 +02:00

Changed status from 'Needs Triage' to: 'Needs User Info'

Philipp Oeser commented

2020-08-04 15:49:17 +02:00

Not exactly sure if I understand correctly.

Pressing "Generate Data Layers" will just create UV Maps appropriately.
In your file, the UVChannel_1 UVMap already seems to have the UVs applied from the modifier (even in its original/untransferred state)?

Here is a simplified (and slightly modified) file in action showing that the UVs are indeed transferred:
#79496.blend

#79496.webm

Does the above work for you?
(note: for the UVEditor to show the transferred UVs as well, you need a current 2.9 build from https://builder.blender.org/download/ -- the rest should be working in 2.83.3 as well...)

Not exactly sure if I understand correctly. Pressing "Generate Data Layers" will just create UV Maps appropriately. In your file, the `UVChannel_1` UVMap already seems to have the UVs applied from the modifier (even in its original/untransferred state)? Here is a simplified (and slightly modified) file in action showing that the UVs are indeed transferred: [#79496.blend](https://archive.blender.org/developer/F8744619/T79496.blend) [#79496.webm](https://archive.blender.org/developer/F8744660/T79496.webm) Does the above work for you? (note: for the UVEditor to show the transferred UVs as well, you need a current 2.9 build from https://builder.blender.org/download/ -- the rest should be working in 2.83.3 as well...)

Jaimi McEntire commented

2020-08-04 16:50:20 +02:00

Changed status from 'Needs User Info' to: 'Archived'

Jaimi McEntire closed this issue

2020-08-04 16:50:20 +02:00

Jaimi McEntire self-assigned this 2020-08-04 16:50:20 +02:00

Jaimi McEntire commented

2020-08-04 16:50:20 +02:00

You are correct. I expected it to behave like the weight copying, replacing what was there. But you have to map the layer that it goes to. My apologies, closing as invalid.

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Data Transfer Modifier is not copying UVs #79496