Enumeration StencilOperation

decrement the current stencil value, clamp to zero

decrement the current stencil value, with wrap-around

increment the current stencil value, clamp to max

increment the current stencil value, with wrap-around

perform a logical bitwise invert operation on the stencil value

keep the current stencil value

replace the stencil value with stencil reference value

set the stencil value to zero