Multiple UDIM tiles are not baked #95190

New Issue

Daniel Bystedt · 2022-01-25T01:58:43+01:00

Daniel Bystedt commented

2022-01-25 01:58:43 +01:00

System Information
Operating system: Windows-10-10.0.19042-SP0 64 Bits
Graphics card: NVIDIA GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.49

Blender Version
Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: f1cca30557
Worked: (newest version of Blender that worked as expected)

Short description of error
Dalai Felinto asked me to report this as a bug via blender.chat

When trying to bake to an object with uv's outside of UDIM 1001 (outside 0-1 space), only the pixels in UDIM 1001 (inside 0-1 space) is baked. This happens even when the target texture contains multiple UDIM tiles

Text objects that I try to bake to a plane with 2 UDIM tiles.

Expected result

Actual result

Exact steps for others to reproduce the error

Open the attached .blend
bake to udims.blend
Press "fill tile" in the uv editor
Select the text objects and then the mesh object "bake target"
Press bake in the render properties

bpy.ops.object.bake(type='EMIT')

You should now be able to see an incorrect bake result in the uv ediors image

**System Information** Operating system: Windows-10-10.0.19042-SP0 64 Bits Graphics card: NVIDIA GeForce GTX 1080/PCIe/SSE2 NVIDIA Corporation 4.5.0 NVIDIA 496.49 **Blender Version** Broken: version: 3.0.0, branch: master, commit date: 2021-12-02 18:35, hash: `f1cca30557` Worked: (newest version of Blender that worked as expected) **Short description of error** Dalai Felinto asked me to report this as a bug via blender.chat When trying to bake to an object with uv's outside of UDIM 1001 (outside 0-1 space), only the pixels in UDIM 1001 (inside 0-1 space) is baked. This happens even when the target texture contains multiple UDIM tiles ________________________________________ Text objects that I try to bake to a plane with 2 UDIM tiles. ![image.png](https://archive.blender.org/developer/F12822148/image.png) ________________________________________ Expected result ![image.png](https://archive.blender.org/developer/F12822150/image.png) ________________________________________ Actual result ![image.png](https://archive.blender.org/developer/F12822157/image.png) ________________________________________ **Exact steps for others to reproduce the error** 1. Open the attached .blend [bake to udims.blend](https://archive.blender.org/developer/F12822164/bake_to_udims.blend) 2. Press "fill tile" in the uv editor ![image.png](https://archive.blender.org/developer/F12822143/image.png) 3. Select the text objects and then the mesh object "bake target" 4. Press bake in the render properties ``` bpy.ops.object.bake(type='EMIT') ``` 5. You should now be able to see an incorrect bake result in the uv ediors image

Daniel Bystedt commented

2022-01-25 01:58:43 +01:00

Added subscriber: @DanielBystedt

blender-admin commented

2022-01-25 01:58:43 +01:00

#85815 was marked as duplicate of this issue

Jesse Yurkovich commented

2022-01-25 02:14:30 +01:00

Added subscriber: @deadpin

Jesse Yurkovich commented

2022-01-25 02:14:30 +01:00

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

Jesse Yurkovich commented

2022-01-25 02:14:30 +01:00

UDIM baking still remains to be implemented and, I think, has never worked correctly. 2.93.x shows a slightly different result but ultimately the same. See #72390/T85815

@DanielBystedt Did prior versions work better and/or more completely than 3.0?

UDIM baking still remains to be implemented and, I think, has never worked correctly. 2.93.x shows a slightly different result but ultimately the same. See #72390/T85815 @DanielBystedt Did prior versions work better and/or more completely than 3.0?

Daniel Bystedt commented

2022-01-25 02:30:00 +01:00

Ah, I should have added that info. You are correct. UDIM has never worked when it comes to baking. I asked Dalai Felinto if I should add it as a design task or similair, but he suggested I'd add it as a bug.

It looks like the documentation is all there in #72390 (Improve UDIM functionality) / #85815 (can't bake udims texture). Perhaps this bug report just becomes an annoying duplicate. Feel free to remove it or flag as duplicate if you like.

Ah, I should have added that info. You are correct. UDIM has never worked when it comes to baking. I asked Dalai Felinto if I should add it as a design task or similair, but he suggested I'd add it as a bug. It looks like the documentation is all there in #72390 (Improve UDIM functionality) / #85815 (can't bake udims texture). Perhaps this bug report just becomes an annoying duplicate. Feel free to remove it or flag as duplicate if you like.

Jesse Yurkovich commented

2022-01-25 11:20:01 +01:00

Added subscribers: @Happy_Phal, @hemul, @tomsmalley, @lichtwerk

Jesse Yurkovich commented

2022-01-25 11:20:05 +01:00

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

Jesse Yurkovich commented

2022-01-25 11:20:05 +01:00

Making this report the primary "To Do" item since it is more complete vs the older one. When someone attempts to implement baking properly they can use this report for verification etc.

Sebastian Villanueva commented

2022-01-26 06:07:57 +01:00

Added subscriber: @vr_sebas

kursad k commented

2022-02-01 19:40:56 +01:00

Added subscriber: @kursadk

kursad k commented

2022-02-01 19:40:56 +01:00

Are we going to see this implemented in 3.2?

Jeroen Bakker commented

2022-04-19 08:08:18 +02:00

Added subscriber: @Jeroen-Bakker

blender-admin commented

2022-04-22 20:44:49 +02:00

This issue was referenced by 6787cc13d4

This issue was referenced by 6787cc13d4efef19eb708e1912356f8c1d4d2e01

Brecht Van Lommel commented

2022-04-22 23:18:58 +02:00

Changed status from 'Confirmed' to: 'Resolved'

Brecht Van Lommel closed this issue

2022-04-22 23:18:58 +02:00

Brecht Van Lommel self-assigned this 2022-04-22 23:18:58 +02:00

Daniel Bystedt commented

2022-04-24 16:16:29 +02:00

Amazing! You are my hero Brecht!

It seems that UDIM baking now works just fine with setup in the shading editor. However UDIM baking still does not seem to work with the multi resolution modifier

Amazing! You are my hero Brecht! It seems that UDIM baking now works just fine with setup in the shading editor. However UDIM **baking still does not seem to work with the multi resolution modifier** ![image.png](https://archive.blender.org/developer/F13022167/image.png)

Daniel Bystedt commented

2022-04-25 15:53:47 +02:00

My mistake. Bake from multires works. I must have been tired when I tried it last night

Damien Picard referenced this issue

2023-11-06 00:48:00 +01:00

Improve UDIM functionality #72390

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