// Enqueue commands to read from a region in buffer object to host memory.
func (q *CommandQueue) EnqueueReadBufferRect(buffer *MemObject, blocking bool, buffer_origin, host_origin, region *Dim3, buffer_row_pitch, buffer_slice_pitch, host_row_pitch, host_slice_pitch int, dataPtr unsafe.Pointer, eventWaitList []*Event) (*Event, error) {
var event C.cl_event
host_offset := make([]C.size_t, 3)
defer C.free(host_offset)
host_offset[0], host_offset[1], host_offset[2] = (C.size_t)(host_origin.X), (C.size_t)(host_origin.Y), (C.size_t)(host_origin.Z)
buffer_offset := make([]C.size_t, 3)
defer C.free(buffer_offset)
buffer_offset[0], buffer_offset[1], buffer_offset[2] = (C.size_t)(buffer_origin.X), (C.size_t)(buffer_origin.Y), (C.size_t)(buffer_origin.Z)
mem_size := make([]C.size_t, 3)
defer C.free(mem_size)
mem_size[0], mem_size[1], mem_size[2] = (C.size_t)(region.X), (C.size_t)(region.Y), (C.size_t)(region.Z)
err := toError(C.clEnqueueReadBufferRect(q.clQueue, buffer.clMem, clBool(blocking), &buffer_offset[0], &host_offset[0], &mem_size[0],
(C.size_t)(buffer_row_pitch), (C.size_t)(buffer_slice_pitch), (C.size_t)(host_row_pitch), (C.size_t)(host_slice_pitch),
dataPtr, C.cl_uint(len(eventWaitList)), eventListPtr(eventWaitList), &event))
return newEvent(event), err
}
func CLEnqueueReadBufferRect(command_queue CL_command_queue,
buffer CL_mem,
blocking_read CL_bool,
buffer_origin [3]CL_size_t,
host_origin [3]CL_size_t,
region [3]CL_size_t,
buffer_row_pitch CL_size_t,
buffer_slice_pitch CL_size_t,
host_row_pitch CL_size_t,
host_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_buffer_origin [3]C.size_t
var c_host_origin [3]C.size_t
var c_region [3]C.size_t
for i := 0; i < 3; i++ {
c_buffer_origin[i] = C.size_t(buffer_origin[i])
c_host_origin[i] = C.size_t(host_origin[i])
c_region[i] = C.size_t(region[i])
}
var c_event C.cl_event
var c_errcode_ret C.cl_int
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.clEnqueueReadBufferRect(command_queue.cl_command_queue,
buffer.cl_mem,
C.cl_bool(blocking_read),
&c_buffer_origin[0],
&c_host_origin[0],
&c_region[0],
C.size_t(buffer_row_pitch),
C.size_t(buffer_slice_pitch),
C.size_t(host_row_pitch),
C.size_t(host_slice_pitch),
ptr,
C.cl_uint(num_events_in_wait_list),
&c_event_wait_list[0],
&c_event)
} else {
c_errcode_ret = C.clEnqueueReadBufferRect(command_queue.cl_command_queue,
buffer.cl_mem,
C.cl_bool(blocking_read),
&c_buffer_origin[0],
&c_host_origin[0],
&c_region[0],
C.size_t(buffer_row_pitch),
C.size_t(buffer_slice_pitch),
C.size_t(host_row_pitch),
C.size_t(host_slice_pitch),
ptr,
0,
nil,
&c_event)
}
if event != nil {
event.cl_event = c_event
}
return CL_int(c_errcode_ret)
}