// Enqueues a command to read from a 2D or 3D image object to host memory.
func (q *CommandQueue) EnqueueReadImage(image *MemObject, blocking bool, origin, region [3]int, rowPitch, slicePitch int, data []byte, eventWaitList []*Event) (*Event, error) {
cOrigin := sizeT3(origin)
cRegion := sizeT3(region)
var event C.cl_event
err := toError(C.clEnqueueReadImage(q.clQueue, image.clMem, clBool(blocking), &cOrigin[0], &cRegion[0], C.size_t(rowPitch), C.size_t(slicePitch), unsafe.Pointer(&data[0]), C.cl_uint(len(eventWaitList)), eventListPtr(eventWaitList), &event))
return newEvent(event), err
}
func (cq *CommandQueue) EnqueueReadImage(i *Image, blocking bool, origin, region [3]Size, rowPitch, slicePitch Size) ([]byte, error) {
c_blocking := C.cl_bool(C.CL_FALSE)
if blocking {
c_blocking = C.CL_TRUE
}
size := Size(0)
if i.Property(IMAGE_DEPTH) == 0 || i.Property(IMAGE_DEPTH) == 1 { // 2D image
if rowPitch == 0 {
rowPitch = i.Property(IMAGE_WIDTH) * i.Property(IMAGE_ELEMENT_SIZE)
}
size = rowPitch * i.Property(IMAGE_HEIGHT)
} else {
if slicePitch == 0 {
if rowPitch == 0 {
rowPitch = i.Property(IMAGE_WIDTH) * i.Property(IMAGE_ELEMENT_SIZE)
}
slicePitch = rowPitch * i.Property(IMAGE_DEPTH)
}
size = slicePitch * i.Property(IMAGE_DEPTH)
}
bytes := make([]byte, size)
if ret := C.clEnqueueReadImage(
cq.id, i.id, c_blocking,
(*C.size_t)(unsafe.Pointer(&origin[0])), (*C.size_t)(unsafe.Pointer(®ion[0])),
C.size_t(rowPitch), C.size_t(slicePitch), unsafe.Pointer(&bytes[0]),
0, nil, nil); ret != C.CL_SUCCESS {
return nil, Cl_error(ret)
}
return bytes, nil
}
func (cq *CommandQueue) EnqueueReadImage(im *Image, origin, region [3]Size, rowPitch, slicePitch uint32) ([]byte, error) {
size := 0
if im.d == 0 {
if rowPitch == 0 {
elemSize, err := im.Info(IMAGE_ELEMENT_SIZE)
if err != nil {
return []byte{}, nil
}
rowPitch = uint32(elemSize) * im.w
}
size = int(rowPitch * im.h)
} else {
if slicePitch == 0 {
if rowPitch == 0 { // ditto. ugh.
elemSize, err := im.Info(IMAGE_ELEMENT_SIZE)
if err != nil {
return []byte{}, nil
}
rowPitch = uint32(elemSize) * im.w
}
slicePitch = rowPitch * im.d
}
size = int(slicePitch * im.d)
}
bytes := make([]byte, size)
if ret := C.clEnqueueReadImage(cq.id, im.id, C.CL_TRUE, (*C.size_t)(unsafe.Pointer(&origin[0])), (*C.size_t)(unsafe.Pointer(®ion[0])), C.size_t(rowPitch), C.size_t(slicePitch), unsafe.Pointer(&bytes[0]), 0, nil, nil); ret != C.CL_SUCCESS {
return nil, Cl_error(ret)
}
return bytes, nil
}
// see https://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueReadImage.html
func EnqueueReadImage(cq CommandQueue, image Mem, blocking_read Bool, origin3 *uint64, region3 *uint64, row_pitch uint64, slice_pitch uint64, ptr unsafe.Pointer, num_events_in_wait_list uint32, event_wait_list *Event, event *Event) ErrorCode {
return ErrorCode(C.clEnqueueReadImage(cq, image, C.cl_bool(blocking_read), (*C.size_t)(unsafe.Pointer(origin3)), (*C.size_t)(unsafe.Pointer(region3)), C.size_t(row_pitch), C.size_t(slice_pitch), unsafe.Pointer(ptr), C.cl_uint(num_events_in_wait_list), (*C.cl_event)(unsafe.Pointer(event_wait_list)), (*C.cl_event)(unsafe.Pointer(event))))
}
func CLEnqueueReadImage(command_queue CL_command_queue,
image CL_mem,
blocking_read CL_bool,
origin [3]CL_size_t,
region [3]CL_size_t,
row_pitch CL_size_t,
slice_pitch CL_size_t,
ptr unsafe.Pointer,
num_events_in_wait_list CL_uint,
event_wait_list []CL_event,
event *CL_event) CL_int {
if (num_events_in_wait_list == 0 && event_wait_list != nil) ||
(num_events_in_wait_list != 0 && event_wait_list == nil) ||
int(num_events_in_wait_list) != len(event_wait_list) {
return CL_INVALID_EVENT_WAIT_LIST
}
var c_origin, c_region [3]C.size_t
var c_event C.cl_event
var c_errcode_ret C.cl_int
for i := 0; i < 3; i++ {
c_origin[i] = C.size_t(origin[i])
c_region[i] = C.size_t(region[i])
}
if num_events_in_wait_list != 0 {
var c_event_wait_list []C.cl_event
c_event_wait_list = make([]C.cl_event, num_events_in_wait_list)
for i := 0; i < int(num_events_in_wait_list); i++ {
c_event_wait_list[i] = event_wait_list[i].cl_event
}
c_errcode_ret = C.clEnqueueReadImage(command_queue.cl_command_queue,
image.cl_mem,
C.cl_bool(blocking_read),
&c_origin[0],
&c_region[0],
C.size_t(row_pitch),
C.size_t(slice_pitch),
ptr,
C.cl_uint(num_events_in_wait_list),
&c_event_wait_list[0],
&c_event)
} else {
c_errcode_ret = C.clEnqueueReadImage(command_queue.cl_command_queue,
image.cl_mem,
C.cl_bool(blocking_read),
&c_origin[0],
&c_region[0],
C.size_t(row_pitch),
C.size_t(slice_pitch),
ptr,
0,
nil,
&c_event)
}
if event != nil {
event.cl_event = c_event
}
return CL_int(c_errcode_ret)
}
