Type Alias FnGetPhysicalDeviceFragmentShadingRatesKHR 

pub type FnGetPhysicalDeviceFragmentShadingRatesKHR = extern "system" fn(physicalDevice: PhysicalDevice, pFragmentShadingRateCount: *mut u32, pFragmentShadingRates: *mut PhysicalDeviceFragmentShadingRateKHR) -> Result;