Get the address of the vkGetInstanceProcAddr function.
Defined in SDL_vulkan.h
void* SDL_Vulkan_GetVkGetInstanceProcAddr(void);(void *) Returns the function pointer for vkGetInstanceProcAddr or NULL on error.
This should be called after either calling SDL_Vulkan_LoadLibrary() or creating an SDL_Window with the SDL_WINDOW_VULKAN flag.
This function is available since SDL 2.0.6.