osp-magnum VS DiligentEngine

And I showed you that the static analyzers, which can detect several situations, are easy and straight-forward to setup and use: https://github.com/TheOpenSpaceProgram/osp-magnum/blob/master/.github/workflows/analyzers.yml

Anywhere that you are using string stream and regex would most likely be better replaced by the string_concat() function from this file https://github.com/TheOpenSpaceProgram/osp-magnum/blob/master/src/osp/string_concat.h

You can also contribute on our github under the MIT license: https://github.com/TheOpenSpaceProgram/osp-magnum

Neither Apple nor Microsoft want any usable multiplatform graphics API. For this reason, none of them delivers such a thing.

If you want a multiplatform graphics API, you should use a library which implements such API on top of these native OS-specific APIs.

I have good experience with that one: http://diligentgraphics.com/diligent-engine/ I’ve used it couple times on Windows with D3D12 backend, and on Linux with GLES 3.1 backend.

Diligent Engine: They say their engine is the successor of bgfx, but I'm not rly into that topic.

Diligent Engine. A Modern Cross-Platform Low-Level 3D Graphics Library and Rendering Framework Tweet.

Read other people's code (I recommend modern small to medium sized github projects, because large ones can be overwhelming) or else you will forever stay in your bubble of how things are done. For example, I had learned a thing or two by using (and code browsing) diligent engine's source.

Diligent Engine

I'm not speaking out of my ass, either, I have very actively followed low-level development being done towards open-source engines such as Diligent and Wicked. I personally am a contributor to the latter engine, as well. It is baffling to me that independent developers don't support this platform.