pub type PFN_vkGetPhysicalDeviceFormatProperties = unsafe extern "system" fn(physical_device: PhysicalDevice, format: Format, p_format_properties: *mut FormatProperties);
pub type PFN_vkGetPhysicalDeviceFormatProperties = unsafe extern "system" fn(physical_device: PhysicalDevice, format: Format, p_format_properties: *mut FormatProperties);