tries to load the vkGetInstanceProcAddr function from the module private lib handle / pointer if the lib was not loaded so far loadVulkanLib is called errors are reported to a specifiable stream which is standard error by default
file stream to receive error messages, default stderr
vkGetInstanceProcAddr if it could be loaded from the lib, null otherwise
See Implementation
tries to load the vkGetInstanceProcAddr function from the module private lib handle / pointer if the lib was not loaded so far loadVulkanLib is called errors are reported to a specifiable stream which is standard error by default