[FieryTransition]

But isn't vulkan made to run cross platform? And why can't they write it in dx12 as well? Aren't those made to be more portable while offering more low level access than previous apis?

What is stopping you from implementing fast math using compute shaders or just hacking with those interfaces? Or are they just too slow when they go through the api layer? Or is that just a myth that can be worked around if you know you are writing high performance code? Pardon my ignorance!

[remram]

They would work and would be fast but not the fastest the algorithm can be implemented on each platform.