MaterialXLoader: Can't load `standard_surface_brick_procedural.mtlx` sample file

[hybridherbst]

Description

When loading the attached sample file (and textures) with MaterialXLoader, a shader error is thrown:

WebGPU:

WebGL:

(Side note, I find it confusing that shader errors are now logged as warnings on WebGPURenderer, despite them still fully stopping the render loop.)

Reproduction steps

1. Go to https://academysoftwarefoundation.github.io/MaterialX/
2. In the top left dropdown, select "standard_surface_brick_procedural.mtlx"
3. Play with the parameters on the right side
4. Download the files (standard_surface_brick_procedural.zip)
5. Load with MaterialXLoader
6. Note the exception.

Code

    // MaterialX
    const mtlxLoader = new MaterialXLoader();
    const path = "https://raw.githubusercontent.com/AcademySoftwareFoundation/MaterialX/main/resources/Materials/Examples/StandardSurface/";
    const file = "standard_surface_brick_procedural.mtlx";
    mtlxLoader
          .setPath( path )
	  .loadAsync( file )
          .then( ({ materials}) => { 
          	console.log("Loaded materials", materials);
                 const firstMaterial = Object.values( materials )[0];
                 mesh.material = firstMaterial;

                 // should be able to adjust procedural parameters here
          });

Live example

https://jsfiddle.net/w6uqog3n/16/

Screenshots

Version

r167

Device

No response

Browser

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OS

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