Update from 4.0.0 to 4.2.0, usdpreviewsurface.mdl@ warning

Omniverse Isaac Sim
1

After updating from 4.0.0 to 4.2.0,
My Isaac lab training is outputting several warnings, as below.

2024-10-09 15:13:03 [12,609ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPreviewSurface.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,609ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdUVTexture.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,609ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_float.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_float2.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_float3.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_float4.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_int.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_string.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_normal.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_point.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_vector.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdPrimvarReader_matrix.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

2024-10-09 15:13:03 [12,610ms] [Warning] [omni.usd] Warning: in GetNodeDiscoveryResults at line 136 of /builds/omniverse/usd-ci/USD/pxr/usd/usdShade/shaderDefUtils.cpp – Unable to resolve info:sourceAsset </UsdTransform2d.info:mdl:sourceAsset> with value @UsdPreviewSurface.mdl@.

Should I ignore this? or Can I fix it by myself?

2 Likes
3

I also get the same warning and I’m using Isaac 4.1.0

5

Is this issue reproducible on Isaac Sim? Could you provide detailed information and the relevant file to help us investigate further?

6

This could be avoided by using

MdlFileCfg
instead of
PreviewSurfaceCfg

For more info:
The given example

  • extensions/omni.isaac.lab_tasks/omni/isaac/lab_tasks/direct/quadcopter/quadcopter_env.py
  • extensions/omni.isaac.lab/test/markers/test_visualization_markers.py
    generates the same error.

While,

  • standalone/demos/markers.py
    does not generate the error.
8

Thank you for posting this. If you still need further help, don’t hesitate to submit a question or bug report. It that is the case, to ensure efficient support and collaboration, please submit your topic to its GitHub repo following the instructions provided on Isaac Lab’s Contributing Guidelines regarding discussions, submitting issues, feature requests, and contributing to the project.

We appreciate your understanding and look forward to assisting you.