stencil-op? ( object -- ? )

Vocabulary

gpu.state

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the stencil-op class.

Definition

USING: kernel ;

IN: gpu.state

: stencil-op? ( object -- ? )
    dup op-dec-wrap?
    [ drop t ] [
        dup op-inc-wrap?
        [ drop t ] [
            dup op-dec-sat?
            [ drop t ] [
                dup op-inc-sat?
                [ drop t ] [
                    dup op-invert?
                    [ drop t ] [
                        dup op-replace? ~quotation~ ~quotation~
                        if
                    ] if
                ] if
            ] if
        ] if
    ] if ;