[Bug 40164] Add Vulkan support

https://bugs.winehq.org/show_bug.cgi?id=40164

--- Comment #7 from Fernando Otero  ---
(In reply to Gabríel Arthúr Pétursson from comment #5)
> Translating DirectX 9/10/11 or OpenGL to Vulkan commands is unlikely to
> bring any performance improvements over existing solutions.

Translating similar or equivalent commands would make no benefit, because of
that, I clarified it would require more work, perhaps converting/adapting some
calls to the new Vulkan features. I didn't mention it, but this would be
beneficial not only to DX9/10/11 games, also to OpenGL ones.

Vulkan is based on Mantle, and shares the same feature set with DX12 (mainly
low level, low CPU overhead). Performance improvements could be noticeable when
using multiple cores. Of course, this could only happen when you have native
apps for DX12/Vulkan. But for instance, Dolphin (Gamecube/Wii emulator) has
already shown up to 60% improvements on AMD multi-core CPUs, only by using a
DX12 plugin.