wayland: dpi-aware

[dkwo]

Is it possible to make bemenu DPI-aware on Wayland? This is the behavior e.g. of the foot terminal emulator: if I set font to size 12, it will take into account the DPI as advertised by the compositor, and act accordingly. (I know there's the scaling option, but it seems suboptimal.)

Thanks.

[Cloudef]

Wayland backend should already be aware of output's scale

[dkwo]

I agree it is aware of scale, but that's not what I'm discussing; I'm suggesting it could be aware of the output's DPI, which is different. The compositor has that information, and there should be a way to pick it and pass it to fontconfig/pango.

[Cloudef]

Is there protocol that exposes DPI on wayland?

[dkwo]

Not directly.

One can use wl_output::geometry and wl_output::mode to compute DPI, as done e.g. here: https://codeberg.org/dnkl/foot/src/branch/master/wayland.c#L1294

[dkwo]

closing this, as maybe asking too much

[Cloudef]

Better keep it open as it's still open issue right?

[dkwo]

sure, if one wants the same (optimal) behavior as foot :) I think, a more important issue to be fixed is the one with scaling: currently, if I use wlr-randr --output ${ext} --scale 2, then bemenu font looks blurry. @Cloudef what do you think?