cudaAddressModeClamp:超出范围就用边界值代替,示意: AA | ABCDE | EE cudaAddressModeBorder:超出范围就用零代替,示意: 00 | ABCDE | 00 cudaAddressModeWrap:重叠模式(循环),示意: DE | ABCDE || AB cudaAddressModeMirror:镜像模式,示意: BA | ABCDE | ED