From: Lars Ingebrigtsen <larsi@gnus.org>
To: Eli Zaretskii <eliz@gnu.org>
Cc: rpluim@gmail.com, emacs-devel@gnu.org, casouri@gmail.com,
monnier@iro.umontreal.ca
Subject: Re: "Fix" sag scaling for hidpi
Date: Sat, 06 Feb 2021 12:35:41 +0100 [thread overview]
Message-ID: <87mtwhctte.fsf@gnus.org> (raw)
In-Reply-To: <83sg69o3av.fsf@gnu.org> (Eli Zaretskii's message of "Sat, 06 Feb 2021 13:15:20 +0200")
Eli Zaretskii <eliz@gnu.org> writes:
> If someone explains what are the "logical" and "physical" pixel sizes,
> I could try figuring out what that means for the MS-Windows case.
Physical pixel size is what you'd think -- it's one actual pixel on the
screen. (If the monitor is 1280 × 1024, you have (* 1280 1024) =>
1310720 physical pixels.)
"Logical" pixels was something that was introduced when people started
making high-resolution screens. In a 2x HiDPI scenario, the OS will
report that the 1280 × 1024 is really a 640 x 512 screen, but if you
give it an image that's 640x512 to display, it'll scale it up, using
four physical pixels per logical pixel, and this will be blurry.
So you give it a 1280x1024 image if it's a logical 640x512 2x screen if
you don't want blurriness. :-/
(Of course, with fonts you avoid the blurriness, because it'll just
render the fonts to whatever the physical pixels are.)
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
next prev parent reply other threads:[~2021-02-06 11:35 UTC|newest]
Thread overview: 192+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-02-04 20:49 "Fix" sag scaling for hidpi Yuan Fu
2021-02-04 22:07 ` Stefan Monnier
2021-02-04 23:10 ` Yuan Fu
2021-02-05 9:02 ` Lars Ingebrigtsen
2021-02-05 10:24 ` Robert Pluim
2021-02-06 10:00 ` Lars Ingebrigtsen
2021-02-06 11:15 ` Eli Zaretskii
2021-02-06 11:35 ` Lars Ingebrigtsen [this message]
2021-02-06 12:20 ` Eli Zaretskii
2021-02-07 12:05 ` Lars Ingebrigtsen
2021-02-07 13:14 ` Robert Pluim
2021-02-09 20:01 ` Alan Third
2021-02-10 8:29 ` Lars Ingebrigtsen
2021-02-10 18:00 ` Yuan Fu
2021-02-10 18:07 ` Yuan Fu
2021-02-10 18:17 ` Lars Ingebrigtsen
2021-02-10 18:24 ` Robert Pluim
2021-02-10 18:41 ` Lars Ingebrigtsen
2021-02-10 18:52 ` Basil L. Contovounesios
2021-02-11 13:53 ` Robert Pluim
2021-02-11 14:30 ` Basil L. Contovounesios
2021-02-11 15:11 ` Robert Pluim
2021-02-11 22:18 ` Cleaning out old X11 toolkits? chad
2021-02-12 7:09 ` Eli Zaretskii
2021-02-12 8:44 ` Colin Baxter
2021-02-12 11:22 ` Eli Zaretskii
2021-02-12 9:30 ` Robert Pluim
2021-02-12 9:35 ` Lars Ingebrigtsen
2021-02-12 10:00 ` Robert Pluim
2021-02-12 10:02 ` Lars Ingebrigtsen
2021-02-12 10:04 ` Lars Ingebrigtsen
2021-02-12 10:18 ` Robert Pluim
2021-02-12 10:30 ` Lars Ingebrigtsen
2021-02-12 21:49 ` Jean Louis
2021-02-12 22:03 ` Jean Louis
2021-02-12 22:45 ` Stefan Kangas
2021-02-13 7:51 ` Eli Zaretskii
2021-02-13 12:05 ` Jean Louis
2021-02-12 11:28 ` Eli Zaretskii
2021-02-12 11:38 ` tomas
2021-02-12 13:26 ` Robert Pluim
2021-02-12 13:57 ` Basil L. Contovounesios
2021-02-15 16:49 ` Sean Whitton
2021-02-12 11:47 ` Ulrich Mueller
2021-02-12 10:00 ` martin rudalics
2021-02-12 10:14 ` Robert Pluim
2021-02-12 17:56 ` martin rudalics
2021-02-12 18:14 ` Merging native-comp and pgtk Stefan Monnier
2021-02-12 18:36 ` Eli Zaretskii
2021-02-12 22:29 ` Andy Moreton
2021-02-12 23:06 ` Stefan Monnier
2021-02-12 23:28 ` Andy Moreton
2021-02-13 9:39 ` Eli Zaretskii
2021-02-13 13:27 ` Stefan Monnier
2021-02-13 14:10 ` Andy Moreton
2021-02-13 14:14 ` Eli Zaretskii
2021-02-13 14:17 ` Eli Zaretskii
2021-02-13 15:48 ` martin rudalics
2021-02-13 15:58 ` Eli Zaretskii
2021-02-14 8:34 ` martin rudalics
2021-02-13 9:20 ` Eli Zaretskii
2021-02-13 13:07 ` Andy Moreton
2021-02-13 14:16 ` Eli Zaretskii
2021-02-13 18:01 ` Andy Moreton
2021-02-13 18:12 ` Eli Zaretskii
2021-02-14 7:33 ` Andrea Corallo via Emacs development discussions.
2021-02-14 15:25 ` Eli Zaretskii
2021-02-13 9:26 ` Andreas Schwab
2021-02-13 12:45 ` Andy Moreton
2021-02-16 23:22 ` Phillip Lord
2021-02-17 15:32 ` Eli Zaretskii
2021-02-17 17:32 ` Andy Moreton
2021-02-17 18:09 ` Óscar Fuentes
2021-02-17 22:20 ` Andy Moreton
2021-02-17 22:52 ` Óscar Fuentes
2021-02-17 19:20 ` Eli Zaretskii
2021-02-12 23:04 ` Stefan Monnier
2021-02-13 9:30 ` Eli Zaretskii
2021-02-13 13:24 ` Stefan Monnier
2021-02-13 14:15 ` Eli Zaretskii
2021-02-12 21:47 ` Andrea Corallo via Emacs development discussions.
2021-02-13 7:39 ` Eli Zaretskii
2021-02-13 11:16 ` Lars Ingebrigtsen
2021-02-13 11:28 ` Tassilo Horn
2021-02-13 11:57 ` Lars Ingebrigtsen
2021-02-13 12:17 ` Dmitry Gutov
2021-02-13 14:53 ` Lars Ingebrigtsen
2021-02-13 20:30 ` Dmitry Gutov
2021-02-13 21:03 ` Lars Ingebrigtsen
2021-02-13 21:30 ` Dmitry Gutov
2021-02-13 21:42 ` Lars Ingebrigtsen
2021-02-13 22:48 ` Lars Ingebrigtsen
2021-02-13 23:44 ` Tassilo Horn
2021-02-13 17:38 ` Stefan Kangas
2021-02-14 18:36 ` Andrea Corallo via Emacs development discussions.
2021-02-14 19:23 ` Stefan Kangas
2021-02-14 19:32 ` Andrea Corallo via Emacs development discussions.
2021-02-14 23:18 ` Óscar Fuentes
2021-02-15 14:15 ` Andrea Corallo via Emacs development discussions.
2021-02-13 13:41 ` Stefan Monnier
2021-02-13 14:18 ` Eli Zaretskii
2021-02-13 20:32 ` Dmitry Gutov
2021-02-14 3:34 ` Eli Zaretskii
2021-02-14 4:32 ` Stefan Monnier
2021-02-13 14:58 ` Lars Ingebrigtsen
2021-02-14 18:34 ` Andrea Corallo via Emacs development discussions.
2021-02-14 7:42 ` Andrea Corallo via Emacs development discussions.
2021-02-12 18:32 ` Cleaning out old X11 toolkits? Eli Zaretskii
2021-02-13 9:01 ` martin rudalics
2021-02-13 9:44 ` Eli Zaretskii
2021-02-13 10:29 ` martin rudalics
2021-02-14 12:50 ` Robert Pluim
2021-02-14 15:53 ` Eli Zaretskii
2021-02-15 9:48 ` Robert Pluim
2021-02-15 15:23 ` Eli Zaretskii
2021-02-15 16:02 ` Robert Pluim
2021-02-15 16:13 ` tomas
2021-02-15 17:03 ` Eli Zaretskii
2021-02-15 17:20 ` Robert Pluim
2021-02-12 13:04 ` Dmitry Gutov
2021-02-12 17:56 ` martin rudalics
2021-02-12 18:33 ` Eli Zaretskii
2021-02-12 20:09 ` martin rudalics
2021-02-12 20:13 ` Eli Zaretskii
2021-02-13 9:02 ` martin rudalics
2021-02-13 9:47 ` Eli Zaretskii
2021-02-13 10:29 ` Colin Baxter
2021-02-13 13:24 ` martin rudalics
2021-02-13 13:53 ` Ulrich Mueller
2021-02-13 15:49 ` martin rudalics
2021-02-13 19:23 ` Jean Louis
2021-02-14 8:35 ` martin rudalics
2021-02-14 9:33 ` Ulrich Mueller
2021-02-14 17:16 ` martin rudalics
2021-02-14 17:48 ` Eli Zaretskii
2021-02-14 18:18 ` Andy Moreton
2021-02-14 19:15 ` Eli Zaretskii
2021-02-14 22:33 ` Óscar Fuentes
2021-02-15 8:17 ` martin rudalics
2021-02-15 9:19 ` Andy Moreton
2021-02-13 14:39 ` Colin Baxter
2021-02-13 14:43 ` Jean Louis
2021-02-13 15:50 ` martin rudalics
2021-02-13 16:04 ` Colin Baxter
2021-02-13 21:42 ` Stefan Monnier
2021-02-14 12:41 ` Robert Pluim
2021-02-14 15:51 ` Eli Zaretskii
2021-02-14 18:18 ` Stefan Monnier
2021-02-14 19:10 ` Eli Zaretskii
2021-02-12 11:20 ` Ulrich Mueller
2021-02-12 13:33 ` James Cloos
2021-02-12 13:49 ` Robert Pluim
2021-02-10 19:19 ` "Fix" sag scaling for hidpi Stefan Monnier
2021-02-11 14:01 ` Robert Pluim
2021-02-11 14:59 ` Stefan Monnier
2021-02-11 15:16 ` Robert Pluim
2021-02-10 23:55 ` Alan Third
2021-02-11 2:01 ` Yuan Fu
2021-02-11 17:34 ` Yuan Fu
2021-02-11 20:18 ` Alan Third
2021-02-12 22:47 ` Alan Third
2021-02-13 11:13 ` Lars Ingebrigtsen
2021-02-13 11:17 ` Alan Third
2021-02-13 11:52 ` Lars Ingebrigtsen
2021-02-13 12:54 ` Alan Third
2021-02-13 13:09 ` Alan Third
2021-02-13 15:09 ` Lars Ingebrigtsen
2021-02-13 16:00 ` Alan Third
2021-02-13 23:30 ` Alan Third
2021-02-13 20:09 ` Yuan Fu
2021-02-13 21:14 ` Lars Ingebrigtsen
2021-02-13 22:50 ` Dmitry Gutov
2021-02-13 23:14 ` Alan Third
2021-02-14 0:02 ` Dmitry Gutov
2021-02-14 2:06 ` Yuan Fu
2021-02-14 2:09 ` Yuan Fu
2021-02-14 12:19 ` Dmitry Gutov
2021-02-14 9:58 ` Alan Third
2021-02-13 15:08 ` Lars Ingebrigtsen
2021-02-13 15:59 ` Alan Third
2021-02-13 21:08 ` Lars Ingebrigtsen
2021-02-13 21:53 ` Alan Third
2021-02-13 21:57 ` Lars Ingebrigtsen
2021-02-13 22:13 ` Alan Third
2021-02-13 18:29 ` chad
2021-02-13 19:52 ` chad
2021-02-13 20:06 ` Yuan Fu
2021-02-13 21:11 ` Lars Ingebrigtsen
2021-02-13 23:20 ` Alan Third
2021-02-09 17:26 ` Grzegorz Kowzan
2021-02-05 20:29 ` Alan Third
2021-02-07 21:58 ` Alan Third
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