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#ifndef HELPER_HH_
#define HELPER_HH_
#include <vulkan/vk_layer.h>
#include <vulkan/vulkan.h>
namespace low_latency {
#define THROW_NOT_VKSUCCESS(x) \
if (const auto result = x; result != VK_SUCCESS) { \
throw result; \
}
// Small templates which allow us to SFINAE find pNext structs.
template <typename T>
static T* find_next(void* const head, const VkStructureType& stype) {
for (auto i = reinterpret_cast<VkBaseOutStructure*>(head)->pNext; i;
i = i->pNext) {
if (i->sType == stype) {
return reinterpret_cast<T*>(i);
}
}
return nullptr;
}
template <typename T>
static const T* find_next(const void* const head,
const VkStructureType& stype) {
for (auto i = reinterpret_cast<const VkBaseInStructure*>(head)->pNext; i;
i = i->pNext) {
if (i->sType == stype) {
return reinterpret_cast<const T*>(i);
}
}
return nullptr;
}
template <typename T>
static const T* find_link(const void* const head,
const VkStructureType& stype) {
for (auto info = find_next<T>(head, stype); info;
info = find_next<T>(info, stype)) {
if (info->function == VK_LAYER_LINK_INFO) {
return reinterpret_cast<const T*>(info);
}
}
return nullptr;
}
} // namespace low_latency
#endif
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