(glsl-packing:pack-structs
 '((:packing :std140)
   (:struct ()
    (:vec :float 3)
    (:array
     (:struct ()
              (:int 32)
              (:vec :float 3)
              (:vec :float 4)
              (:vec :float 3)
              (:float 32))
     32)
    (:int 32))))