unsigned enabled:1; /**< stencil[0]: stencil enabled, stencil[1]: two-side enabled */
unsigned func:3; /**< PIPE_FUNC_x */
unsigned fail_op:3; /**< PIPE_STENCIL_OP_x */
unsigned zpass_op:3; /**< PIPE_STENCIL_OP_x */
unsigned zfail_op:3; /**< PIPE_STENCIL_OP_x */
unsigned enabled:1; /**< stencil[0]: stencil enabled, stencil[1]: two-side enabled */
unsigned func:3; /**< PIPE_FUNC_x */
unsigned fail_op:3; /**< PIPE_STENCIL_OP_x */
unsigned zpass_op:3; /**< PIPE_STENCIL_OP_x */
unsigned zfail_op:3; /**< PIPE_STENCIL_OP_x */