anchor.diff:              (v-dmat3 '(v-dvec3 3))
               (v-dmat4 '(v-dvec4 4))
               (t (error 'could-not-layout-type :type type))))
  -         (array-type (type-spec->type array-type-spec)))
  -    (calc-layout layout-specifier
  -                 name
  -                 parent-type-base-offset
  -                 parent-type-aligned-offset
  -                 last-slot-base-offset
  -                 last-slot-aligned-offset
  -                 last-slot-machine-size
  -                 array-type)))
  +         (equiv-array-type (type-spec->type equiv-array-type-spec))
  +         (equiv-layout (calc-layout layout-specifier
  +                                    name
  +                                    parent-type-base-offset
  +                                    parent-type-aligned-offset
  +                                    last-slot-base-offset
  +                                    last-slot-aligned-offset
  +                                    last-slot-machine-size
  +                                    equiv-array-type)))
  +    (with-slots (varjo-type element-layout) equiv-layout
  +      (setf varjo-type type)
  +      (setf element-layout nil))
  +    equiv-layout))
   
   (defun calc-array-of-structs-layout (layout-specifier
                                        name
  
positive.code:                                         last-slot-aligned-offset
                                          last-slot-machine-size
                                          equiv-array-type)))
          (with-slots (varjo-type) equiv-layout
            (setf varjo-type type))
          equiv-layout))))
  
  (defun calc-col-mat-layout (layout-specifier
  
negative.code:   ;; 5. If the member is a column-major matrix with C columns and R
    ;; rows, the matrix is stored identically to an array of C column
    ;; vectors with R components each, according to rule (4).
    (let* ((equiv-array-type-spec
            (typecase type
              (v-mat2 '(v-vec2 2))
              (v-mat3 '(v-vec3 3))
  