From: Alan Third <alan@idiocy.org>
To: "Rudolf Adamkovič" <salutis@me.com>
Cc: 49688@debbugs.gnu.org
Subject: bug#49688: 28.0.50; Attempting to show images crashes Emacs
Date: Sun, 25 Jul 2021 00:22:24 +0100 [thread overview]
Message-ID: <YPygsDaJEU/fSCIg@idiocy.org> (raw)
In-Reply-To: <m25ywzfi1g.fsf@me.com>
On Sun, Jul 25, 2021 at 12:44:59AM +0200, Rudolf Adamkovič wrote:
> TL;DR The images show pixelated.
>
> Every modern Mac has a HiDPI (a.k.a. Retina) screen, where each point
> (logical pixel) maps to 4 physical pixels, a.k.a. 2× scale. I in the
> attached small screenshot, please compare the sharpness of the image with
> the text next to it. Emacs renders the image at 1× and the text at 2×.
Without knowing more about the image and how it's being displayed I
can't say whether there's anything wrong with that.
Images are, by default, displayed at 1x resolution so they will appear
the same size on retina and non-retina screens.
If you want to display images with pixels at a 1:1 ratio you need to
scale the image by (/ 1 (frame-scale-factor)), but that will only
work on Emacs 28.
This is how Emacs has always worked on retina screens, this patch
shouldn't change that. If it does then there's something else wrong,
but I don't see any change in image display here.
--
Alan Third
next prev parent reply other threads:[~2021-07-24 23:22 UTC|newest]
Thread overview: 17+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-07-21 22:34 bug#49688: 28.0.50; Attempting to show images crashes Emacs Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-22 7:52 ` Alan Third
2021-07-22 10:33 ` Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-22 19:50 ` Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-22 21:01 ` Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-22 22:11 ` Alan Third
2021-07-23 22:52 ` Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-23 23:27 ` Alan Third
2021-07-24 16:09 ` Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-24 16:52 ` Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-24 17:05 ` Alan Third
2021-07-24 22:44 ` Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-24 23:22 ` Alan Third [this message]
2021-07-25 23:45 ` Rudolf Adamkovič via Bug reports for GNU Emacs, the Swiss army knife of text editors
2021-07-26 20:05 ` Alan Third
2021-10-20 15:22 ` Stefan Kangas
2021-10-20 20:13 ` Alan Third
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