If you target PC/Console and don't have an abstract GPU interface, then you should rethink your life choices

And all the graphics stacks nowadays are similar, Vulkan, Metal, DX12, all share the same ideas

Also there are countless opensource cross platform GPU libs, bgfx [1] or sokol [2] for example

[1] - https://github.com/bkaradzic/bgfx

[2] - https://github.com/floooh/sokol