Optionalalbedo?: [number, number, number, number]Optionalroughness?: numberOptionalmetallic?: numberOptionalemissive?: [number, number, number]Linear-space emissive RGB multiplier. Values above 1 push the surface over the bloom threshold for a neon/glow look. Default [0,0,0] (off).
Optionaltransparent?: boolean
Build an inline PBR material. (Material-asset references go through the resolver.)