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//---------------------------------------------------------------------------//
// Copyright (c) 2013-2014 Kyle Lutz <kyle.r.lutz@gmail.com>
//
// Distributed under the Boost Software License, Version 1.0
// See accompanying file LICENSE_1_0.txt or copy at
// http://www.boost.org/LICENSE_1_0.txt
//
// See http://boostorg.github.com/compute for more information.
//---------------------------------------------------------------------------//
#include <boost/compute/config.hpp>
#define BOOST_TEST_MODULE TestStruct
#include <boost/test/unit_test.hpp>
#include <boost/compute/function.hpp>
#include <boost/compute/algorithm/find_if.hpp>
#include <boost/compute/algorithm/transform.hpp>
#include <boost/compute/container/vector.hpp>
#include <boost/compute/functional/field.hpp>
#include <boost/compute/types/struct.hpp>
#include <boost/compute/type_traits/type_name.hpp>
#include <boost/compute/type_traits/type_definition.hpp>
#include <boost/compute/utility/source.hpp>
namespace compute = boost::compute;
// example code defining an atom class
namespace chemistry {
struct Atom
{
Atom(float _x, float _y, float _z, int _number)
: x(_x), y(_y), z(_z), number(_number)
{
}
float x;
float y;
float z;
int number;
};
} // end chemistry namespace
// adapt the chemistry::Atom class
BOOST_COMPUTE_ADAPT_STRUCT(chemistry::Atom, Atom, (x, y, z, number))
struct StructWithArray {
int value;
int array[3];
};
BOOST_COMPUTE_ADAPT_STRUCT(StructWithArray, StructWithArray, (value, array))
#include "check_macros.hpp"
#include "context_setup.hpp"
BOOST_AUTO_TEST_CASE(atom_type_name)
{
BOOST_CHECK(std::strcmp(compute::type_name<chemistry::Atom>(), "Atom") == 0);
}
BOOST_AUTO_TEST_CASE(atom_struct)
{
std::vector<chemistry::Atom> atoms;
atoms.push_back(chemistry::Atom(1.f, 0.f, 0.f, 1));
atoms.push_back(chemistry::Atom(0.f, 1.f, 0.f, 1));
atoms.push_back(chemistry::Atom(0.f, 0.f, 0.f, 8));
compute::vector<chemistry::Atom> vec(atoms.size(), context);
compute::copy(atoms.begin(), atoms.end(), vec.begin(), queue);
// find the oxygen atom
BOOST_COMPUTE_FUNCTION(bool, is_oxygen, (chemistry::Atom atom),
{
return atom.number == 8;
});
compute::vector<chemistry::Atom>::iterator iter =
compute::find_if(vec.begin(), vec.end(), is_oxygen, queue);
BOOST_CHECK(iter == vec.begin() + 2);
// copy the atomic numbers to another vector
compute::vector<int> atomic_numbers(vec.size(), context);
compute::transform(
vec.begin(), vec.end(),
atomic_numbers.begin(),
compute::field<int>("number"),
queue
);
CHECK_RANGE_EQUAL(int, 3, atomic_numbers, (1, 1, 8));
}
BOOST_AUTO_TEST_CASE(custom_kernel)
{
std::vector<chemistry::Atom> data;
data.push_back(chemistry::Atom(1.f, 0.f, 0.f, 1));
data.push_back(chemistry::Atom(0.f, 1.f, 0.f, 1));
data.push_back(chemistry::Atom(0.f, 0.f, 0.f, 8));
compute::vector<chemistry::Atom> atoms(data.size(), context);
compute::copy(data.begin(), data.end(), atoms.begin(), queue);
std::string source = BOOST_COMPUTE_STRINGIZE_SOURCE(
__kernel void custom_kernel(__global const Atom *atoms,
__global float *distances)
{
const uint i = get_global_id(0);
const __global Atom *atom = &atoms[i];
const float4 center = { 0, 0, 0, 0 };
const float4 position = { atom->x, atom->y, atom->z, 0 };
distances[i] = distance(position, center);
}
);
// add type definition for Atom to the start of the program source
source = compute::type_definition<chemistry::Atom>() + "\n" + source;
compute::program program =
compute::program::build_with_source(source, context);
compute::vector<float> distances(atoms.size(), context);
compute::kernel custom_kernel = program.create_kernel("custom_kernel");
custom_kernel.set_arg(0, atoms);
custom_kernel.set_arg(1, distances);
queue.enqueue_1d_range_kernel(custom_kernel, 0, atoms.size(), 1);
}
// Creates a StructWithArray containing 'x', 'y', 'z'.
StructWithArray make_struct_with_array(int x, int y, int z)
{
StructWithArray s;
s.value = 0;
s.array[0] = x;
s.array[1] = y;
s.array[2] = z;
return s;
}
BOOST_AUTO_TEST_CASE(struct_with_array)
{
compute::vector<StructWithArray> structs(context);
structs.push_back(make_struct_with_array(1, 2, 3), queue);
structs.push_back(make_struct_with_array(4, 5, 6), queue);
structs.push_back(make_struct_with_array(7, 8, 9), queue);
BOOST_COMPUTE_FUNCTION(int, sum_array, (StructWithArray x),
{
return x.array[0] + x.array[1] + x.array[2];
});
compute::vector<int> results(structs.size(), context);
compute::transform(
structs.begin(), structs.end(), results.begin(), sum_array, queue
);
CHECK_RANGE_EQUAL(int, 3, results, (6, 15, 24));
}
BOOST_AUTO_TEST_SUITE_END()
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