From: YAMAMOTO Mitsuharu <mituharu@math.s.chiba-u.ac.jp>
To: Paul Eggert <eggert@cs.ucla.edu>
Cc: 37153@debbugs.gnu.org, Roland Winkler <winkler@gnu.org>
Subject: bug#37153: 26.1; some png images scrambled
Date: Mon, 26 Aug 2019 08:06:05 +0900 [thread overview]
Message-ID: <wlo90c976q.wl-mituharu@math.s.chiba-u.ac.jp> (raw)
In-Reply-To: <wlblwckfwg.wl-mituharu@math.s.chiba-u.ac.jp>
On Mon, 26 Aug 2019 08:02:23 +0900,
YAMAMOTO Mitsuharu wrote:
>
> On Mon, 26 Aug 2019 03:38:07 +0900,
> Paul Eggert wrote:
> >
> > YAMAMOTO Mitsuharu wrote:
> >
> > > It seems to be necessary to look into the tRNS chunk data for paletted
> > > images. Again, W32 would need some more work.
> >
> > Thanks, I confirmed that this fixes the misdisplay for me as well. I
> > attempted to port it to w32 (as well as to unusual libpng builds that
> > do not define PNG_tRNS_SUPPORTED) and installed the attached into
> > master.
> >
> > With this patch on Ubuntu 18.04.3 I always see the first image shown
> > in your tRNS.pg screenshot <https://bugs.gnu.org/37153#56>. So it may
> > be that more work needs to be done to support other faces. Still, this
> > patch is an improvement so it's worth going in.
>
> At least, your patch misses the case of non-paletted transparent PNGs
> (tb???c?? in http://www.schaik.com/pngsuite2011/pngsuite_trn_png.html).
And you would need to turn off font-lock-mode (or start Emacs with -D)
to replicate my tRNS.png screenshot.
YAMAMOTO Mitsuharu
mituharu@math.s.chiba-u.ac.jp
next prev parent reply other threads:[~2019-08-25 23:06 UTC|newest]
Thread overview: 29+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-23 4:49 bug#37153: 26.1; some png images scrambled Roland Winkler
2019-08-23 8:47 ` Eli Zaretskii
2019-08-23 11:39 ` Roland Winkler
2019-08-23 12:22 ` Eli Zaretskii
2019-08-23 15:07 ` Roland Winkler
2019-08-23 15:34 ` Eli Zaretskii
2019-08-23 19:37 ` Paul Eggert
2019-08-23 20:11 ` Eli Zaretskii
2019-08-23 20:33 ` Paul Eggert
2019-08-24 5:51 ` Eli Zaretskii
2019-08-24 3:17 ` Roland Winkler
2019-08-24 3:39 ` Paul Eggert
2019-08-24 4:19 ` Roland Winkler
2019-08-24 6:26 ` Eli Zaretskii
2019-08-24 6:22 ` Eli Zaretskii
2019-08-24 9:01 ` mituharu
2019-08-24 10:17 ` Eli Zaretskii
2019-08-25 4:19 ` YAMAMOTO Mitsuharu
2019-08-25 7:24 ` Eli Zaretskii
2019-08-25 4:52 ` Roland Winkler
2019-08-25 6:58 ` YAMAMOTO Mitsuharu
2019-08-25 12:19 ` Roland Winkler
2019-08-25 18:38 ` Paul Eggert
2019-08-25 18:56 ` Eli Zaretskii
2019-08-25 23:02 ` YAMAMOTO Mitsuharu
2019-08-25 23:06 ` YAMAMOTO Mitsuharu [this message]
2019-08-25 23:39 ` Paul Eggert
2019-09-24 16:23 ` Lars Ingebrigtsen
2019-09-24 17:14 ` Eli Zaretskii
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