Intel has only released beta/test drivers for Windows, and this was their statement as of August:

The current Plan Of Record is that Intel® is not supporting Vulkan on Windows drivers. The drivers that were made available on Developer.com are intended for Vulkan developers.

So, it is expected that some Vulkan drivers may not work for end users.

Intel GPUs power at least 50% of Windows PCs, and I'd guess the number is closer to 70%. Unless this situation changes, Vulkan is not the single cross-platform answer.

Intel has (unofficially?) said they will deliver production quality Vulkan drivers for their iGPUs. https://software.intel.com/en-us/forums/developing-games-and...

Thanks for providing the link. The relevant quotes:

"Vulkan support right now is for 6th Generation and newer products and we are targeting developers not consumers. Thus why the releases are beta and are listed in the Game Developer Zone and not anywhere else."

is full Vulkan support planned for consumers: "To my knowledge yes, but I do not know when and would not want to hazard a guess"

Windows 8 and older power more than half of Windows PCs, so Direct3D 12 is no more widely deployed than Vulkan.

It is, given that Vulkan only has quality drivers on Android 7, currently 0.7%, and GNU/Linux, currently 2% of the desktop market, as per Steam dashboard.

Windows 10 is at around 25% currently.

However, those Windows 7 and 8 machines with AMD and Nvidia GPUs do support Vulkan.

Yes, with these wonderful set of games:

https://en.wikipedia.org/wiki/List_of_games_with_Vulkan_supp...

Versus these ones:

https://en.wikipedia.org/wiki/List_of_games_with_DirectX_12_...

And game availability relates to GPU API support available at the platform... how exactly?

The fact that game studios decide to use one API or another is no factor in evaluating API availability. (Also note how many DX12 games not published by Microsoft are DX12 exclusives - that says something about Microsoft motives, but not about API qualities).

> And game availability relates to GPU API support available at the platform... how exactly?

When given the option, professional game developers choose the one that better helps them achieving their goals.

There's a reason why DX had almost zero adaptation outside games. Maybe it is not that good API, if you need to support your app for a few years too. Games are fire and forget.

Actually 2D and text rendering, WPF rendering, UWP Composition API, UI animation support.

All of them used by most desktop applications on Windows, including image, video and 3D editing applications.

Not explicitly. It is used by platform libraries that these application use. Given that they are provided by the platform vendor - the same that pushes DX - it's no wonder, that it was being pushed there.

CAD, GIS, or other applications that need to use 3D explicitly, on the other hand.... Basically only Autodesk ventured there, with 3ds Max and AutoCAD (since 2015).

Well, Autodesk products are market leaders, probably Catia is the only alternative.

There are actually many CAD packages, with different levels of complexity, from Siemens NX to VariCAD, plus myriads of domain-specific ones, like ArchiCAD.

For example, most of our customers prefer MicroStation, for some reason (no, we are not Bentley shop ;).

I'm sure you can see that 2/5 (approaching half) of the Direct3D 12 titles were published by Microsoft themselves.

And actually, by the numbers there are more titles on Vulkan than there are titles not released by Microsoft on D3D12.