Interface GltfMaterial

interface GltfMaterial {
    alphaMode?: "OPAQUE" | "MASK" | "BLEND";
    doubleSided?: boolean;
    extras?: Readonly<Record<string, unknown>>;
    name?: string;
    pbrMetallicRoughness: {
        baseColorFactor: readonly [number, number, number, number];
        metallicFactor: number;
        roughnessFactor: number;
    };
}