pub unsafe extern "system" fn vkDestroySwapchainKHR(
device: VkDevice,
swapchain: VkSwapchainKHR,
pAllocator: *const VkAllocationCallbacks,
)pub unsafe extern "system" fn vkDestroySwapchainKHR(
device: VkDevice,
swapchain: VkSwapchainKHR,
pAllocator: *const VkAllocationCallbacks,
)