MoltenVK VS Cemu

https://github.com/KhronosGroup/MoltenVK

Translating between rendering APIs is not really the problem. The GPU design is more different than the API is.

Khronos maintains MoltenVk though, which is "official" as it gets: https://github.com/KhronosGroup/MoltenVK

...technically, Vulkan on Windows is also only supported via 3rd-parties (the GPU vendors), Microsoft doesn't support Vulkan either ;)

MoltenVK implements large parts of Vulkan on top of Metal for Apple systems. It isn't full Vulkan but it makes porting Vulkan games to OS X easier.

That's cool. Maybe I haven't thought enough about this. Let me check it out. FWIW it's this PR that you are referring to I think: https://github.com/KhronosGroup/MoltenVK/pull/1815/

For Metal specifically, they could adopt and contribute to Vulkan and get access to a lot more software. Right now you need to use a compatibility layer, and surely Apple could just support both APIs natively with much lower overhead. But they don't, because it nudges developers to stick to the Apple ecosystem instead of being able to support multiple platforms.

At the moment the most promising thing is MoltenVK (DX12 -> DXVK -> Vulkan -> MoltenVK -> Metal), but the development is not that quick mainly because there aren't tons of developer that works at the same time on the project. It's not actually a Metal related problem at the moment (they have a road map of things that they can be achieved with Metal 3 like Mesh shader and Geometry shader).

What you asked is already existed for at least 8 years. Yeah EIGHT years. It's called "MoltenVK". So far it's the only implementation of Vulkan for macOS. Basically it's a wrapper that runs on top of Metal API.

Edit : It's being worked on by the cemu devs https://github.com/cemu-project/Cemu/pull/924

if cemu.info is then yeah

you'll have to install the Microsoft Visual C++ 2017 X64 Redistributable: vc_redist.x64.exe from http://cemu.info/ again, but yeah, thats it. If you have any change to the cemu.exe file you'll have to also do it again.

You download Cemu yourself from https://cemu.info and follow the Cemu setup guide from https://cemu.cfw.guide/

If you hop on over to r/roms though they have a pinned megathread which links to trusted sources (often on a site as reputable as archive.org). Grab the Tekken Tag Tournament 2 Wii U Edition .wua from here and run it on CEMU instead of trying to locate the PS3 version. Wii U emulation is much further along so this will run better anyway and CEMU doesn't require additional BIOS for setup iirc.

I found this report on GitHub talking about it and the root cause seems to be that Nvidia drivers lack support for:

Ok, since the problem seems to be wayland, can you try to start with GDK_BACKEND=x11 cemu? Have you tried the official appimages here? Are the 32-bit versions of the drivers installed? (e.g. lib32-vulkan-radeon). Is your hardware nvidia (it has issues on wayland)?