code: function _fixSet( set ){
    return (set |
        (( set & ~~BLEND_FUNC_A_SET   ) >>> 2 ) |
        (( set & ~~BLEND_EQ_A_SET     ) >>> 2 ) |
        (( set & ~~STENCIL_B_FUNC_SET ) >>> 3 ) |
        (( set & ~~STENCIL_B_OP_SET   ) >>> 3 ) |
        (( set & ~~STENCIL_B_MASK_SET ) >>> 3 )
      );
  }
docs: avoid set inconsistency for '*separate' configs