[pjmlp]

> 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.

[vetinari]

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.

[pjmlp]

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.

[vetinari]

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).

[pjmlp]

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

[vetinari]

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 ;).