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Add specializations of std::tuple_element and std::tuple_size for vk::StructureChain. (#1602)

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Andreas Süßenbach 2023-06-22 14:02:39 +02:00 committed by GitHub
parent 13808e5875
commit 389d1250cd
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3 changed files with 49 additions and 2 deletions
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20
snippets/StructureChain.hpp
View File

@ -244,3 +244,23 @@
}
}
};
// interupt the VULKAN_HPP_NAMESPACE for a moment to add specializations of std::tuple_size and std::tuple_element for the StructureChain!
}
namespace std
{
template <typename... Elements>
struct tuple_size<VULKAN_HPP_NAMESPACE::StructureChain<Elements...>>
{
static constexpr size_t value = std::tuple_size<std::tuple<Elements...>>::value;
};
template <std::size_t Index, typename... Elements>
struct tuple_element<Index, VULKAN_HPP_NAMESPACE::StructureChain<Elements...>>
{
using type = typename std::tuple_element<Index, std::tuple<Elements...>>::type;
};
} // namespace std
namespace VULKAN_HPP_NAMESPACE
{

6
tests/StructureChain/StructureChain.cpp
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@ -67,6 +67,12 @@ int main( int /*argc*/, char ** /*argv*/ )
vk::PhysicalDevicePushDescriptorPropertiesKHR>
sc7;
#if ( 17 <= VULKAN_HPP_CPP_VERSION )
// test for structured binding from a StructureChain
auto const & [p0, p1] = sc1;
auto & [p2, p3] = sc2;
#endif
#if !defined( NDEBUG )
void * pNext = sc7.get<vk::PhysicalDeviceIDProperties>().pNext;
#endif

21
vulkan/vulkan.hpp
View File

@ -1181,6 +1181,27 @@ namespace VULKAN_HPP_NAMESPACE
}
};
// interupt the VULKAN_HPP_NAMESPACE for a moment to add specializations of std::tuple_size and std::tuple_element for the StructureChain!
}
namespace std
{
template <typename... Elements>
struct tuple_size<VULKAN_HPP_NAMESPACE::StructureChain<Elements...>>
{
static constexpr size_t value = std::tuple_size<std::tuple<Elements...>>::value;
};
template <std::size_t Index, typename... Elements>
struct tuple_element<Index, VULKAN_HPP_NAMESPACE::StructureChain<Elements...>>
{
using type = typename std::tuple_element<Index, std::tuple<Elements...>>::type;
};
} // namespace std
namespace VULKAN_HPP_NAMESPACE
{
# if !defined( VULKAN_HPP_NO_SMART_HANDLE )
template <typename Type, typename Dispatch>
class UniqueHandleTraits;