UniVRM/Assets/VRM10/Runtime/IO/Material/Vrm10UrpMaterialDescriptorGenerator.cs

using UniGLTF;
using UnityEngine;
using VRMShaders;

namespace UniVRM10
{
    public sealed class Vrm10UrpMaterialDescriptorGenerator : IMaterialDescriptorGenerator
    {
        public MaterialDescriptor Get(GltfData data, int i)
        {
            // unlit
            if (!GltfUnlitMaterialImporter.TryCreateParam(data, i, out MaterialDescriptor matDesc))
            {
                // pbr
                if (!GltfPbrUrpMaterialImporter.TryCreateParam(data, i, out matDesc))
                {
                    // fallback
                    Debug.LogWarning($"material: {i} out of range. fallback");
                    return new MaterialDescriptor(GltfMaterialDescriptorGenerator.GetMaterialName(i, null), GltfPbrMaterialImporter.ShaderName);
                }
            }
            return matDesc;
        }

    }
}