Export UV Layout doesn't respect UVs alpha #79438

New Issue

Oliver Villar · 2020-08-01T01:46:38+02:00

Oliver Villar commented

2020-08-01 01:46:38 +02:00

System Information
Operating system: Windows-10-10.0.19041-SP0 64 Bits
Graphics card: GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.74

Blender Version
Broken: version: 2.83.1, branch: master, commit date: 2020-06-25 09:47, hash: 8289fc688b (also tried with 2.90 Beta right before submitting this report).
Worked: I know for sure it worked in 2.79.

Short description of error
When using the "Export UV Layout" option from the UV menu in the UV Editor, the UVs are exported, but the image exported doesn't have a transparent background (when exporting in .png format) - it displays a dark grey background behind the UVs. Chaing the Fill option during export affects the faces, but nothing changes in the background. Having a background renders the UVs image useless, as it can't be overlapped on textures/images easily in an Image Editor.

Exact steps for others to reproduce the error

Create an object with UVs.
Go to the UV Editor.
In the UV Menu, use "Export UV Layout" option.
Export as .png.

Current "workaround"
It's not that big of a deal, as apparently .svg works fine, but some software doesn't work well with vectors, and may require an extra step to convert the .svg into a raster image format like .png.

Decided to report because I think it's not the expected behavior of an UV layout image to have a background (been using that option for years, and it was always transparent in previous Blender versions since I can remember!).

Thanks!!

**System Information** Operating system: Windows-10-10.0.19041-SP0 64 Bits Graphics card: GeForce RTX 2080 Ti/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 442.74 **Blender Version** Broken: version: 2.83.1, branch: master, commit date: 2020-06-25 09:47, hash: `8289fc688b` (also tried with 2.90 Beta right before submitting this report). Worked: I know for sure it worked in 2.79. **Short description of error** When using the "Export UV Layout" option from the UV menu in the UV Editor, the UVs are exported, but the image exported doesn't have a transparent background (when exporting in .png format) - it displays a dark grey background behind the UVs. Chaing the Fill option during export affects the faces, but nothing changes in the background. Having a background renders the UVs image useless, as it can't be overlapped on textures/images easily in an Image Editor. **Exact steps for others to reproduce the error** 1. Create an object with UVs. 2. Go to the UV Editor. 3. In the UV Menu, use "Export UV Layout" option. 4. Export as .png. **Current "workaround"** It's not that big of a deal, as apparently .svg works fine, but some software doesn't work well with vectors, and may require an extra step to convert the .svg into a raster image format like .png. Decided to report because I think it's not the expected behavior of an UV layout image to have a background (been using that option for years, and it was always transparent in previous Blender versions since I can remember!). Thanks!!

Oliver Villar commented

2020-08-01 01:46:38 +02:00

Added subscriber: @OliverVillar

Josh commented

2020-08-01 05:25:05 +02:00

Added subscriber: @overseer25

Josh commented

2020-08-01 05:25:05 +02:00

Hi Oliver,

I am also experiencing this issue, and I may have found a workaround. In the UV Editor, there is a "Face" checkbox in the Display menu under Overlays. When I unchecked this option, my UVs exported with an alpha background. I'll post a picture here.

Let me know if this works!

Hi Oliver, I am also experiencing this issue, and I may have found a workaround. In the UV Editor, there is a "Face" checkbox in the Display menu under Overlays. When I unchecked this option, my UVs exported with an alpha background. I'll post a picture here. ![FacesUnchecked.png](https://archive.blender.org/developer/F8734563/FacesUnchecked.png) Let me know if this works!

blender-admin commented

2020-08-01 09:22:10 +02:00

This issue was referenced by blender/blender-addons@7da2a313f9

This issue was referenced by blender/blender-addons@7da2a313f91e3ec0c3ae3602c1e09e09c8c19f21

Campbell Barton commented

2020-08-01 09:25:00 +02:00

Changed status from 'Needs Triage' to: 'Resolved'

Campbell Barton closed this issue

2020-08-01 09:25:00 +02:00

Campbell Barton self-assigned this 2020-08-01 09:25:00 +02:00

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