USD export: UVs are exported as primvar:st, but the shader still references the former UVmap #112407

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Thomas Kumlehn · 2023-09-15T10:25:28+02:00

Thomas Kumlehn commented

2023-09-15 10:25:28 +02:00

System Information
Operating system: macOS 13.5.2 (22G91)
Graphics card: M1

Blender Version
Broken: 4.0.0 Alpha 2023-09-03 15:22, 30de3d7c1a, main

Short description of error
USD export: UVs are exported as primvar:st, but the exported texture shader still references the former "UVmap" with token inputs:varname = "UVmap"

**System Information** Operating system: macOS 13.5.2 (22G91) Graphics card: M1 **Blender Version** Broken: 4.0.0 Alpha 2023-09-03 15:22, 30de3d7c1a79, main **Short description of error** USD export: UVs are exported as `primvar:st`, but the exported texture shader still references the former "UVmap" with `token inputs:varname = "UVmap"`

Thomas Kumlehn added the

labels 2023-09-15 10:25:29 +02:00

Germano Cavalcante commented

2023-09-15 22:10:47 +02:00

Thanks for the report, @pixelpartner.

To verify the issue and forward it to our development team, could you please provide steps to reproduce this problem?

Additionally, do you think this issue could be related to any of the following confirmed bugs?

#93052: USD Import: No texture coordinates imported
#105368: USDZ roundtrip breaks texture coordinate assignment
#100452: USD Alab v2 import errors
#98572: UsdPreviewSurface import is missing UV transformations

Thanks for the report, @pixelpartner. To verify the issue and forward it to our development team, could you please provide steps to reproduce this problem? Additionally, do you think this issue could be related to any of the following confirmed bugs? #93052: USD Import: No texture coordinates imported #105368: USDZ roundtrip breaks texture coordinate assignment #100452: USD Alab v2 import errors #98572: UsdPreviewSurface import is missing UV transformations

Germano Cavalcante added

Status

Needs Information from User

and removed

Status

Needs Triage

labels 2023-09-15 22:10:56 +02:00

Thomas Kumlehn commented

2023-09-18 09:14:36 +02:00

Steps to reproduce:
Simply export a UV mapped mesh with a texture applied to as any USD flavor. In the exported def Shader "uvmap" the varname should be "st" instead "UVmap" for the first UVmap and "st1" for the second, if applicable.

Seems unrelated to #93052, as this is on import and the USD snippet looks totally standards conform.
Same for #100452 and #98572

It is related to #105368 steps 3 and 4

Steps to reproduce: Simply export a UV mapped mesh with a texture applied to as any USD flavor. In the exported `def Shader "uvmap"` the varname should be "st" instead "UVmap" for the first UVmap and "st1" for the second, if applicable. Seems unrelated to #93052, as this is on import and the USD snippet looks totally standards conform. Same for #100452 and #98572 It is related to #105368 steps 3 and 4

Thomas Kumlehn commented

2023-09-18 11:26:17 +02:00

I just installed the 4 alpha USD branch from Sept 14 and the export works as expected.

Thomas Kumlehn closed this issue

2023-09-18 11:27:12 +02:00

Blender Bot added

Status

Archived

and removed

Status

Needs Information from User

labels 2023-09-18 11:27:14 +02:00