How is this related?
It doesn't matter which engine is used in general, the only problem here is Sony.
It isn't technical.
Fortnite proved it when it 'mistakenly' allowed PS4 players to play with Xbox One players due to a 'configuration issue'.
Leaders have no incentive to do it.
Exactly. No Vulkan support is the same problem as not allowing cross play - lock-in in case of MS and Sony. At least Nintendo support Vulkan on Switch:
https://www.khronos.org/conformance/adopters/conformant-prod...
Most Switch games are done in Unity, Unreal, Crysis and a couple of other lesser known middleware engines, taking advantage of NVN.
>yet is used as much as GL ES 1.0 was on the PS3.
Any Vulkan based engine can use it. Wasn't there Doom release for Switch?
Khronos keeps trying to advocate game developers to adopt Vulkan.
Meanwhile everyone already added DX12, Metal, NVN and LibCGNM to their engines.
Here for your education about game developer culture, Unreal demo at WWDC 2018, and the community live stream done afterwards.
> Khronos keeps trying to advocate game developers to adopt Vulkan
And you don't like that, since you are a big fan of lock-in apparently.
I am a big fan of games worthwhile playing and the related IP produced from them, regardless of the tools used to produce them.