boost-compute - boost::compute 复制自定义结构

Question

是否可以使用 boost::compute 复制自定义结构数组？例如

struct A { float a; };
struct AB { float a; float b; };

BOOST_COMPUTE_ADAPT_STRUCT(A, A, (a))
BOOST_COMPUTE_ADAPT_STRUCT(AB, AB, (a, b))

boost::compute::vector<A> va(100);
boost::compute::vector<AB> vab(100);
boost::compute::copy(va.begin(), va.end(), vab.begin());

Answer 1

是的，看this example来自 Boost.Compute 测试。请记住:

Due to differences in struct padding between the host compiler and the device compiler, the BOOST_COMPUTE_ADAPT_STRUCT() macro requires that the adapted struct is packed (i.e. no padding bytes between members).

来源:boost/compute/types/struct.hpp