Re: "Fix" sag scaling for hidpi

[Eli Zaretskii]

> From: Lars Ingebrigtsen <larsi@gnus.org>
> Date: Sat, 06 Feb 2021 11:00:51 +0100
> Cc: Yuan Fu <casouri@gmail.com>, Stefan Monnier <monnier@iro.umontreal.ca>,
>  emacs-devel <emacs-devel@gnu.org>
> 
> > Thatʼs the wrong direction: pgtk is moving us towards logical pixel
> > sizes (gtk already uses them, but there are some rough edges).
> 
> Is there any realistic path we can take to change this in the
> Windows/non-gtk cases, though?  We should have the same on all
> architectures, and if we can't transition the old ones to logical pixel
> sizes, then the new ones will have to use physical ones, too.

If someone explains what are the "logical" and "physical" pixel sizes,
I could try figuring out what that means for the MS-Windows case.