- PFN_vkCreateInstance vkCreateInstance;
- PFN_vkDestroyInstance vkDestroyInstance;
- PFN_vkEnumeratePhysicalDevices vkEnumeratePhysicalDevices;
- PFN_vkGetPhysicalDeviceQueueFamilyProperties vkGetPhysicalDeviceQueueFamilyProperties;
- PFN_vkGetPhysicalDeviceSurfaceSupportKHR vkGetPhysicalDeviceSurfaceSupport;
- PFN_vkCreateDevice vkCreateDevice;
- PFN_vkDestroyDevice vkDestroyDevice;
- PFN_vkGetDeviceQueue vkGetDeviceQueue;
- PFN_vkCreateXlibSurfaceKHR vkCreateXlibSurface;
- PFN_vkDestroySurfaceKHR vkDestroySurface;
- PFN_vkCreateDebugReportCallbackEXT vkCreateDebugReportCallback;
- PFN_vkDestroyDebugReportCallbackEXT vkDestroyDebugReportCallback;
+ PFN_vkCreateInstance vkCreateInstance = 0;
+ PFN_vkDestroyInstance vkDestroyInstance = 0;
+ PFN_vkEnumeratePhysicalDevices vkEnumeratePhysicalDevices = 0;
+ PFN_vkGetPhysicalDeviceQueueFamilyProperties vkGetPhysicalDeviceQueueFamilyProperties = 0;
+ PFN_vkGetPhysicalDeviceSurfaceSupportKHR vkGetPhysicalDeviceSurfaceSupport = 0;
+ PFN_vkCreateDevice vkCreateDevice = 0;
+ PFN_vkDestroyDevice vkDestroyDevice = 0;
+ PFN_vkGetDeviceQueue vkGetDeviceQueue = 0;
+ PFN_vkCreateXlibSurfaceKHR vkCreateXlibSurface = 0;
+ PFN_vkDestroySurfaceKHR vkDestroySurface = 0;
+ PFN_vkCreateDebugReportCallbackEXT vkCreateDebugReportCallback = 0;
+ PFN_vkDestroyDebugReportCallbackEXT vkDestroyDebugReportCallback = 0;