USD Material Preview Shading is showing "fragmented" albedo #97136

New Issue

Markus Lanxinger · 2022-04-07T11:21:06+02:00

Markus Lanxinger commented

2022-04-07 11:21:06 +02:00

System Information
Operating system: Windows 11 (Build: 22000.593)
Graphics card: Nvidia RTX 3090, Nvidia RTX 3080

Blender Version
Broken: 3.2, 81ec3dce65, master, 2022-04-06
Worked: NA

Short description of error

USD Material assignment is correct but the material preview viewport shading is showing "fragmented" textures.

Exact steps for others to reproduce the error

File, Import, usdc
Check Import USD Preview
Change Viewport to Material Preview Mode

test.blend
test.zip

**System Information** Operating system: Windows 11 (Build: 22000.593) Graphics card: Nvidia RTX 3090, Nvidia RTX 3080 **Blender Version** Broken: 3.2, 81ec3dce6542, master, 2022-04-06 Worked: NA **Short description of error** USD Material assignment is correct but the material preview viewport shading is showing "fragmented" textures. ![Screenshot 2022-04-07 111616.png](https://archive.blender.org/developer/F12980408/Screenshot_2022-04-07_111616.png) **Exact steps for others to reproduce the error** 1) File, Import, usdc 2) Check Import USD Preview 3) Change Viewport to Material Preview Mode [test.blend](https://archive.blender.org/developer/F12980412/test.blend) [test.zip](https://archive.blender.org/developer/F12980416/test.zip)

Markus Lanxinger commented

2022-04-07 11:21:06 +02:00

Added subscriber: @weirdmonkey2807

Germano Cavalcante commented

2022-04-07 17:25:12 +02:00

Added subscriber: @mano-wii

Germano Cavalcante commented

2022-04-07 17:25:12 +02:00

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

Germano Cavalcante closed this issue

2022-04-07 17:25:12 +02:00

Germano Cavalcante commented

2022-04-07 17:25:12 +02:00

I don't think this has anything to do with the USD importer, since you manually assigned the materials.
Looking at the file, the Normal texture is being affected by the sRGB color space. Switching to linear solves the problem.

From what I can see, this is not a bug.
For help using Blender, please try one of the community websites: https://www.blender.org/community/

I don't think this has anything to do with the USD importer, since you manually assigned the materials. Looking at the file, the Normal texture is being affected by the sRGB color space. Switching to linear solves the problem. ![Captura de Tela 2022-04-07 às 12.19.06.png](https://archive.blender.org/developer/F12981017/Captura_de_Tela_2022-04-07_a_s_12.19.06.png) From what I can see, this is not a bug. For help using Blender, please try one of the community websites: https://www.blender.org/community/

Markus Lanxinger commented

2022-04-07 17:26:40 +02:00

I think you misunderstood. I didn't manually assign these materials in the project I shared.

this is what happened when I used the USD importer and had it auto assign the material.

That means the USD Importer incorrectly marks the normal texture as RGB.

Maybe this has to do with the texture naming and added 0 that it doesn't see it as a normal (baked_mesh_norm0.png)

I think you misunderstood. I didn't manually assign these materials in the project I shared. this is what happened when I used the USD importer and had it auto assign the material. That means the USD Importer incorrectly marks the normal texture as RGB. Maybe this has to do with the texture naming and added 0 that it doesn't see it as a normal (baked_mesh_norm0.png)

Germano Cavalcante commented

2022-04-07 17:43:22 +02:00

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

Germano Cavalcante reopened this issue

2022-04-07 17:43:22 +02:00

Germano Cavalcante commented

2022-04-07 19:24:25 +02:00

Sorry for the misunderstanding.
It looks like that solving this is the ToDo mentioned in #93904 (USD import: investigate texture color space conversion issue).
So it's something that is already being worked on.

Thanks for the report, I will merge this in #93904.

Sorry for the misunderstanding. It looks like that solving this is the `ToDo` mentioned in #93904 (USD import: investigate texture color space conversion issue). So it's something that is already being worked on. Thanks for the report, I will merge this in #93904.

Germano Cavalcante commented

2022-04-07 19:24:39 +02:00

Closed as duplicate of #93904

Germano Cavalcante closed this issue

2022-04-07 19:24:39 +02:00

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USD Material Preview Shading is showing "fragmented" albedo #97136