blend-equation? ( object -- ? )

Vocabulary

gpu.state

Inputs and outputs

object	an object
?	a boolean

Word description

Tests if the object is an instance of the blend-equation class.

Definition

USING: kernel ;

IN: gpu.state

: blend-equation? ( object -- ? )
    dup eq-max?
    [ drop t ] [
        dup eq-min?
        [ drop t ] [
            dup eq-reverse-subtract?
            [ drop t ]
            [ dup eq-subtract? [ drop t ] [ eq-add? ] if ] if
        ] if
    ] if ;