# Can metallic car paint be exported in GLTF?

I'm trying to export a car model with red metallic paint as a GLTF model. A diffused red metallic with a high gloss clear. It appears that with GLTF it's either one or the other?

I can get somewhat of a metallic paint look by sharpening up the roughness of the metallic, but then it looks more like anodized metal than car paint.

Is this a limitation of the GLTF format or does anyone know of a workaround? Thanks.

Clear coat is not part of the glTF 2.0 core specification, but it was added in a glTF extension called KHR_materials_clearcoat. Not all glTF viewers can display clear coat yet, but some of the major ones have released stable versions that can, including ThreeJS, BabylonJS, and Filament. The gltf-test project has a test of clear coat with a summary of some frameworks that support it.