040000 tree a31cca6c4bbd5ab4fc174a4994b371c821a88900	scalar-scalar
040000 tree 3e8634c48490075155dddefaa0dc3256bd846cc4	scalar-vec3
040000 tree 8cc62cc5b31e9df4b504be95360a9b17d3b6444a	vec3-scalar
040000 tree 6f891b016bc268741bcc5b9c0f718a896537ebaf	vec3-vec3