Kacey Coleyf8d6fd45a6fix for missing glTF2 normal, tangent and vertex color attributes on glTF 2 mesh primitives; validation tests added for gltf 1 and gltf mesh prim attribs
f8d6fd45a6
fix for missing glTF2 normal, tangent and vertex color attributes on glTF 2 mesh primitives; validation tests added for gltf 1 and gltf mesh prim attribs