Comment by flohofwoe
> Vulkan is the exception as it's a standard so needs to be very clear so all stakeholders can implement it correctly.
Lol... while the Vulkan documentation situation is a lot better than OpenGL it's not any better than the documentation of other 3D APIs, especially when trying to make sense of extensions (which depend on other extensions, which in turn depend on other extensions - once you're at the end of the breadcrumb trail you already have forgotten what the original question was).
D3D has a 'functional spec' here which provides a lot more under-the-hood information than what's available on https://docs.vulkan.org/spec/latest/index.html: