cl-queue-read-buffer ( buffer-range alien dependent-events -- event )
OpenCL

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Vocabulary
opencl

Inputs

buffer-range	a cl-buffer-range
alien	an alien
dependent-events	a sequence of events

Outputs

event

a cl-event

Word description
Queue a read operation from buffer-range to alien. Dependent events can be passed to order the operation relative to other operations.

Definition

USING: accessors alien.c-types alien.data destructors kernel
opencl.ffi opencl.private sequences
specialized-arrays.instances.alien.c-types.void* ;

IN: opencl

: cl-queue-read-buffer
    ( buffer-range alien dependent-events -- event )
    [
        [ (current-cl-queue) handle>> ] dip
        [ buffer>> handle>> CL_FALSE ] [ offset>> ] [ size>> ]
        tri
    ] 2dip [ length ] keep
    [ f ] [ [ handle>> ] void*-array{ } map-as ] if-empty
    f void* <ref> [ clEnqueueReadBuffer cl-success ] keep
    void* deref cl-event new-disposable swap >>handle ;