clEnqueueCopyBufferRect vs clEnqueueWriteBufferRect

cl_int clEnqueueCopyBufferRect (	cl_command_queue command_queue,
	cl_mem src_buffer,
	cl_mem dst_buffer,
	const size_t src_origin[3],
	const size_t dst_origin[3],
	const size_t region[3],
	size_t src_row_pitch,
	size_t src_slice_pitch,
	size_t dst_row_pitch,
	size_t dst_slice_pitch,
	cl_uint num_events_in_wait_list,
	const cl_event *event_wait_list,
	cl_event *event)

cl_int clEnqueueWriteBufferRect (	cl_command_queue command_queue,
	cl_mem buffer,
	cl_bool blocking_write,
	const size_t buffer_origin[3],
	const size_t host_origin[3],
	const size_t region[3],
	size_t buffer_row_pitch,
	size_t buffer_slice_pitch,
	size_t host_row_pitch,
	size_t host_slice_pitch,
	void *ptr,
	cl_uint num_events_in_wait_list,
	const cl_event *event_wait_list,
	cl_event *event)

모지?

했는데 완전 다른 함수.

copy는 src_buffer(cl_mem)에서 dst_buffer(cl_mem)으로 (device내) 복사 하는거고, 

write는 host의 ptr(void*)을 device의 buffer(cl_mem)으로 쓰기(transfer).

이게 아마 2point 배열에서만 사용가능한거 같다.

int[][]는 사용불가이고,

int**에서 사용가능 할듯.

int[][]는 clEnqueueR,WBuffer나 clEnqueueR,WImage를 사용해야할듯..

Heterogeneous Computing with OpenCL (Paperback) 외국도서 저자 : Benedict Gaster, David R. Kaeli, Lee Howes, Perhaad Mistry 출판 : Morgan Kaufmann Publishers 2011.08.31 상세보기

Opencl Programming Guide (Paperback / 1st Ed.) 외국도서 저자 : Aaftab Munshi 출판 : Pearson 2011.07.23 상세보기