gpu-data-ptr? ( object -- ? )

Vocabulary

gpu.buffers

Inputs and outputs

object	an object
?	a boolean

Word description

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

Definition

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

IN: gpu.buffers

: gpu-data-ptr? ( object -- ? )
    dup tag 1 swap fixnum-shift-fast 578 fixnum-bitand 0 eq? not
    [ drop t ] [
        dup
        tuple?
        [ layout-of 7 slot \ buffer-ptr eq? ]
        [ drop f ]
        if
    ] if ;