gpu-state? ( object -- ? )

Vocabulary

gpu.state

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the gpu-state class.

Definition

USING: classes.tuple.private kernel slots.private ;

IN: gpu.state

: gpu-state? ( object -- ? )
    dup tuple? [
        layout-of
        7
        slot
        dup
        \ mask-state
        eq?
        [ drop t ]
        [
            dup \ blend-state eq?
            [ drop t ] [
                dup \ depth-state eq?
                [ drop t ] [
                    dup \ depth-range-state eq?
                    [ drop t ] [
                        dup \ stencil-state eq?
                        ~quotation~ ~quotation~ if
                    ] if
                ] if
            ] if
        ]
        if
    ] [ drop f ] if ;