0,
  VK_NV_EXTENSION_53_SPEC_VERSION: 0,
  VK_KHR_MULTIVIEW_SPEC_VERSION: 1,
  VK_IMG_FORMAT_PVRTC_SPEC_VERSION: 1,
  VK_NV_EXTERNAL_MEMORY_CAPABILITIES_SPEC_VERSION: 1,
  VK_NV_EXTERNAL_MEMORY_SPEC_VERSION: 1,
  VK_NV_EXTERNAL_MEMORY_WIN32_SPEC_VERSION: 1,
  VK_NV_WIN32_KEYED_MUTEX_SPEC_VERSION: 1,
  VK_KHR_GET_PHYSICAL_DEVICE_PROPERTIES_2_SPEC_VERSION: 1,
  VK_KHR_DEVICE_GROUP_SPEC_VERSION: 3,
  VK_EXT_VALIDATION_FLAGS_SPEC_VERSION: 1,
  VK_NN_VI_SURFACE_SPEC_VERSION: 1,
  VK_KHR_SHADER_DRAW_PARAMETERS_SP