slang-gfx vs Vulkan: What's missing?

[Pentalimbed]

I'm thinking of using slang-gfx in place of Vulkan for my toy soft body physics engine + renderer since it has much less boilerplate. However, I'm afraid that I might be missing some features down the road. What notable functionalities are missing from the native Vulkan API that I may care about?

[jkwak-work]

I found that there is a document for more details about slang-gfx, but the document seems outdated.
https://shader-slang.org/slang/gfx-user-guide/index.html

slang-gfx is mainly for slang and it may not provide full access to all the features the backend API can provide.
If you decided to use it on your project, you can expect a few missing features.

However, we like to encourage you to try and implement any missing features; and upstream back to github/shader-slang/slang.

[jkwak-work]

EDIT: It appears that the document is obsolete and we plan to delete the document.

You are encouraged to use slang-rhi, instead.

[Please-just-dont]

Can someone please explain what this slang-gfx is? Is it another abstraction layer like the many there are, like SDL-GPU or WebGPU,