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From: Alan Third <alan@idiocy.org>
To: 38394@debbugs.gnu.org
Subject: bug#38394: Fwd: Use different image filtering when zooming in vs zooming out
Date: Tue, 26 Nov 2019 21:39:10 +0000	[thread overview]
Message-ID: <CABGBtwkGi_GZwwjV0Awpy+4b_i7UAe23Us7GW5wkPi9RjYpSHg@mail.gmail.com> (raw)
In-Reply-To: <20191126212729.GC7891@breton.holly.idiocy.org>


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On Tue, Nov 26, 2019 at 09:40:06PM +0100, Adam Sjøgren wrote:
> Alan writes:
>
> > Every time I look at those screenshots I think that perhaps we should
> > turn off the smoothing completely, then remember I turned it on
> > because photos of real things looked awful without it.
>
> Good point.
>
> But hard to tell whether to smooth or not, I guess? xpm's are probably
> often not-photos, but png's...

It might be worth smoothing on scaling down, but not on scaling up.
That way if you zoom in you get exact pixels, but zooming out you
don’t get aliasing effects.

I don’t know if that would add any other problems...

Patch attached ‐ this goes on top of the patch for bug#38109:

    https://debbugs.gnu.org/cgi/bugreport.cgi?bug=38109#137

It is also only for XRender. I’ve no idea how to go about doing it in
other terms.
-- 
Alan Third

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  parent reply	other threads:[~2019-11-26 21:39 UTC|newest]

Thread overview: 67+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-11-07 21:11 bug#38109: 27.0.50; xpm image scaling doesn't work Unknown
2019-11-07 21:30 ` bug#38109: Updated Emacs to HEAD, consistently not scaling now Unknown
2019-11-07 21:49   ` Lars Ingebrigtsen
2019-11-07 21:54     ` Unknown
2019-11-07 22:03       ` Lars Ingebrigtsen
2019-11-07 22:12         ` Unknown
2019-11-08 19:34           ` Alan Third
2019-11-08 19:38             ` Alan Third
2019-11-08 21:19               ` Unknown
2019-11-08 21:03             ` Unknown
2019-11-08 21:12               ` Lars Ingebrigtsen
2019-11-08 21:18                 ` Unknown
2019-11-08 21:19                   ` Lars Ingebrigtsen
2019-11-08 21:35                     ` Unknown
2019-11-08 23:03               ` Alan Third
2019-11-09 17:22                 ` Alan Third
2019-11-09 17:58                   ` Eli Zaretskii
2019-11-09 18:11                     ` Alan Third
2019-11-09 18:42                       ` Eli Zaretskii
2019-11-09 20:09                   ` Lars Ingebrigtsen
2019-11-09 21:56                   ` Unknown
2019-11-09 22:18                     ` Unknown
2019-11-09 23:13                       ` Unknown
2019-11-10 17:12                         ` Alan Third
2019-11-16 16:53                           ` Unknown
2019-11-17 17:22                             ` Alan Third
2019-11-17 18:23                               ` Unknown
2019-11-17 18:49                                 ` Unknown
2019-11-17 19:01                                   ` Alan Third
2019-11-09  6:33               ` Eli Zaretskii
2019-11-09 10:28                 ` Unknown
2019-11-09 10:37                   ` Eli Zaretskii
2019-11-08 21:11             ` Lars Ingebrigtsen
2019-11-08 23:06               ` Alan Third
2019-11-08  6:36     ` Eli Zaretskii
2019-11-08 21:04       ` Lars Ingebrigtsen
2019-11-09  6:31         ` Eli Zaretskii
2019-11-07 21:58 ` bug#38109: 27.0.50; xpm image scaling doesn't work Stephen Berman
2019-11-08  6:28 ` Eli Zaretskii
2019-11-08  8:17   ` Unknown
2019-11-08 21:46 ` bug#38109: Another data point Unknown
2019-11-08 22:02   ` Lars Ingebrigtsen
2019-11-23  0:02 ` bug#38109: Updated Emacs to HEAD, consistently not scaling now Unknown
2019-11-24 17:26   ` Alan Third
2019-11-24 17:52     ` Unknown
2019-11-26 20:36       ` Alan Third
2019-11-26 20:40         ` Unknown
     [not found]           ` <20191126212729.GC7891@breton.holly.idiocy.org>
2019-11-26 21:39             ` Alan Third [this message]
2019-11-27 12:32               ` bug#38394: Fwd: Use different image filtering when zooming in vs zooming out Lars Ingebrigtsen
2019-12-02 13:05                 ` Alan Third
2019-12-05 10:02                   ` Lars Ingebrigtsen
2020-08-02 17:52               ` Lars Ingebrigtsen
2020-08-02 20:35                 ` Alan Third
2020-08-03  6:10                   ` Lars Ingebrigtsen
2020-08-03  9:10                     ` Alan Third
2020-08-03 14:04                       ` Robert Pluim
2020-08-03 15:13                         ` Alan Third
2020-08-03 19:55                           ` Robert Pluim
2020-08-04  8:52                       ` Lars Ingebrigtsen
2020-08-04 19:51                         ` Alan Third
2020-08-05  8:47                           ` Lars Ingebrigtsen
2020-08-14  6:03               ` David Ponce
2020-08-14 20:20                 ` Alan Third
2020-08-14 21:14                   ` David Ponce
2020-08-14 23:10                     ` Alan Third
2020-08-15  7:04                       ` David Ponce
2019-11-29 21:27     ` bug#38109: Updated Emacs to HEAD, consistently not scaling now Alan Third

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