"Valve, LunarG, and The Brenwill Workshop join forces with Khronos to release open source SDKs and runtime libraries; Khronos Portability Initiative defines subset of Vulkan 1.0 portable to macOS and iOS"
Source/Read more: https://www.khronos.org/news/press/vulkan-applications-enabled-on-apple-platforms
Read also: https://www.khronos.org/vulkan/portability-initiative