3.0.0-2 import from usdz ignoring textures (USDU-230)

[SteveTheodore]

1. Export a working model from Unity as a USDZ
2. In a second project, import the USDZ with "all payloads" enabled
3. Expected: Model and textures are imported to the same shader as exporter
4. Result: Shader changes to "standard", textures are not imported.

The textures are present in the USDZ, but don't get pulled in.

[ponahoum]

@SteveTheodore I don't think that the import is specifically broken. It's the export that is. Although I see the texture file when unzipping the usdz, the exported usdz doesn't open properly with the texture in blender/app devices. As soon as I switch to v3.0.0-exp.1 it solves the issue and the export is good. I'm using Unity version 2020.3.31f1.

[noemis84]

Just tested the usd workflow between blender and unity and before I open a new issue I post it here. In general, this usd import in unity seem to be experiemental and not really usable since years, or is here someone using it in production?

My problems with USD import: I export a simple textured cube with blender 3.3.1

using: usd-unity-sdk-3.0.0-exp.2

• uv maps on all imported object are broken, seem not to exist

So I tried an older version -> using: usd-unity-sdk-3.0.0-exp.1

• using URP -> no texture (base map) applied -> after switching to standard/core renderer "import preview surface" works as expected
• all imported normals seem broken, using computed normals make everything to smooth shading

[lee-aandrew]

Hey @noemis84

Thank you for the additional information, it is greatly appreciated! For your issue with uv maps being broken, could you try on this branch mentioned in this comment? https://github.com/Unity-Technologies/usd-unity-sdk/issues/315#issuecomment-1227269471

Thank you, and please let us know if the above branch helps in anyway