[dagmx]

You are correct that idTech targets Vulkan (and they have some great GDC talks to boot)

They are however very much the minority.

I am suspect of your claim about Vulkan abstraction layers running better than DX12. If there is a performance difference, it’s likely elsewhere in the stack and just tangentially related.

[mabster]

I'm surprised by that as well.

I haven't done this stuff for quite a while, so my memory might be foggy, but the main advantage of Vulcan was that you can control all the CPU locking rather than the API doing it. This allows you to do stuff like prepare on one thread and submit on another, etc.

But that would be negated if you're using an abstraction layer.