Type Definition vulkanalia::vk::PFN_vkSignalSemaphoreKHR

type PFN_vkSignalSemaphoreKHR = extern "system" fn(Device, *const SemaphoreSignalInfo) -> Result;

https://www.khronos.org/registry/vulkan/specs/1.2-extensions/man/html/vkSignalSemaphoreKHR.html