Luxar Viewer API Documentation - v2026.9.22
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    Type Alias MeshMaterialKind

    MeshMaterialKind: "luxar" | "physical"

    The two mesh material families. 'luxar' is the house shader (spec ยง6.2) and what an absent attr means; 'physical' opts into three's physically based material (MESH_PHYSICAL_MATERIALS_SPEC.md).