Yes. Wayland is designed to be flexible of what does the drawing and where (currently only shared memory and EGL surfaces are implemented / supported). So it needs to define monitors as abstract concepts. They are called outputs and the client can query the size directly in Wayland protocol without needing display drivers or OpenGL.
However, there is no common way of handling different custom DPIs / scaling in the core Wayland protocol. Fractional scaling is implemented optionally by the client and the server and both need to opt-in.
alt Hacker News
Yes. Wayland is designed to be flexible of what does the drawing and where (currently only shared memory and EGL surfaces are implemented / supported). So it needs to define monitors as abstract concepts. They are called outputs and the client can query the size directly in Wayland protocol without needing display drivers or OpenGL.
However, there is no common way of handling different custom DPIs / scaling in the core Wayland protocol. Fractional scaling is implemented optionally by the client and the server and both need to opt-in.