[tutanchamun]

> [...] Metal is one year older than Vulkan [...]

Is it really though? Vulkan is based on AMD Mantle which AMD gave to Khronos. AMD Mantle (2013) predates Apple Metal (2014).

[pjmlp]

AMD gave Mantle to Khronos as they were going nowhere on their own.

When Apple released Metal, Mandle was still an AMD API.