040000 tree ada68c9037e07ed68d388a9a9258d579b43fad54	scalar-scalar
040000 tree e80cfce1748a4a64e85fc57036f7e327551bdac4	scalar-vec3
040000 tree 8a41520731235367ba7727d657b3f27a51b6ea3d	vec3-scalar
040000 tree 5447ab3fd653a44f16dd43dcb045cc77f89c69dd	vec3-vec3