// Enqueues a command to map a region of an image object into the host address space and returns a pointer to this mapped region. func (q *CommandQueue) EnqueueMapImage(buffer *MemObject, blocking bool, flags MapFlag, origin, region [3]int, eventWaitList []*Event) (*MappedMemObject, *Event, error) { cOrigin := sizeT3(origin) cRegion := sizeT3(region) var event C.cl_event var err C.cl_int var rowPitch, slicePitch C.size_t ptr := C.clEnqueueMapImage(q.clQueue, buffer.clMem, clBool(blocking), flags.toCl(), &cOrigin[0], &cRegion[0], &rowPitch, &slicePitch, C.cl_uint(len(eventWaitList)), eventListPtr(eventWaitList), &event, &err) if err != C.CL_SUCCESS { return nil, nil, toError(err) } ev := newEvent(event) if ptr == nil { return nil, ev, ErrUnknown } size := 0 // TODO: could calculate this return &MappedMemObject{ptr: ptr, size: size, rowPitch: int(rowPitch), slicePitch: int(slicePitch)}, ev, nil }
// see https://www.khronos.org/registry/cl/sdk/1.1/docs/man/xhtml/clEnqueueMapImage.html func EnqueueMapImage(cq CommandQueue, image Mem, blocking_map Bool, map_flags MapFlags, origin3 *uint64, region3 *uint64, image_row_pitch *uint64, image_slice_pitch *uint64, num_events_in_wait_list uint32, event_wait_list *Event, event *Event, errcode_ret *int32) unsafe.Pointer { return unsafe.Pointer(C.clEnqueueMapImage(cq, image, C.cl_bool(blocking_map), C.cl_map_flags(map_flags), (*C.size_t)(unsafe.Pointer(origin3)), (*C.size_t)(unsafe.Pointer(region3)), (*C.size_t)(unsafe.Pointer(image_row_pitch)), (*C.size_t)(unsafe.Pointer(image_slice_pitch)), C.cl_uint(num_events_in_wait_list), (*C.cl_event)(unsafe.Pointer(event_wait_list)), (*C.cl_event)(unsafe.Pointer(event)), (*C.cl_int)(unsafe.Pointer(errcode_ret)))) }
func CLEnqueueMapImage(command_queue CL_command_queue, image CL_mem, blocking_map CL_bool, map_flags CL_map_flags, origin [3]CL_size_t, region [3]CL_size_t, image_row_pitch *CL_size_t, image_slice_pitch *CL_size_t, num_events_in_wait_list CL_uint, event_wait_list []CL_event, event *CL_event, errcode_ret *CL_int) unsafe.Pointer { 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) { if errcode_ret != nil { *errcode_ret = CL_INVALID_EVENT_WAIT_LIST } return nil } var c_origin, c_region [3]C.size_t var c_image_row_pitch, c_image_slice_pitch C.size_t var c_event C.cl_event var c_errcode_ret C.cl_int var c_ptr_ret unsafe.Pointer 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_ptr_ret = C.clEnqueueMapImage(command_queue.cl_command_queue, image.cl_mem, C.cl_bool(blocking_map), C.cl_map_flags(map_flags), &c_origin[0], &c_region[0], &c_image_row_pitch, &c_image_slice_pitch, C.cl_uint(num_events_in_wait_list), &c_event_wait_list[0], &c_event, &c_errcode_ret) } else { c_ptr_ret = C.clEnqueueMapImage(command_queue.cl_command_queue, image.cl_mem, C.cl_bool(blocking_map), C.cl_map_flags(map_flags), &c_origin[0], &c_region[0], &c_image_row_pitch, &c_image_slice_pitch, 0, nil, &c_event, &c_errcode_ret) } if image_row_pitch != nil { *image_row_pitch = CL_size_t(c_image_row_pitch) } if image_slice_pitch != nil { *image_slice_pitch = CL_size_t(c_image_slice_pitch) } if event != nil { event.cl_event = c_event } if errcode_ret != nil { *errcode_ret = CL_int(c_errcode_ret) } return c_ptr_ret }