consts
VK_MAX_EXTENSION_NAME_SIZE
Maximum length of a layer of extension name string
VK_MAX_EXTENSION_NAME_SIZE is the length in char values of an
array containing a layer or extension name string, as returned in
VkLayerProperties::layerName,
VkExtensionProperties::extensionName, and other queries.
#define VK_MAX_EXTENSION_NAME_SIZE 256