From: Lars Ingebrigtsen <larsi@gnus.org>
To: ynyaaa@gmail.com
Cc: 47043@debbugs.gnu.org
Subject: bug#47043: 27.1; transparent PNG image scaled larger may be blurred
Date: Wed, 10 Mar 2021 15:41:13 +0100 [thread overview]
Message-ID: <877dmfkr5i.fsf@gnus.org> (raw)
In-Reply-To: <86im5z1b0z.fsf@gmail.com> (ynyaaa@gmail.com's message of "Wed, 10 Mar 2021 20:52:12 +0900")
ynyaaa@gmail.com writes:
> When a transparent PNG image is scaled larger, it may be displayed as a
> blurred image.
>
> The attached image transparent3.png is a green square with red dots.
> Its alpha values change one by one from left to right with step 1.
> transparent4.png is a similar image whose alpha values are floored into
> multiples of four.
In Emacs 27.1, scaling images upwards always blur them. This has been
changed in Emacs 28.
There's further work being done in this area, though -- blurring may be
reintroduced in some use cases, but this specific problem has been
fixed, so I'm closing this bug report.
--
(domestic pets only, the antidote for overdose, milk.)
bloggy blog: http://lars.ingebrigtsen.no
prev parent reply other threads:[~2021-03-10 14:41 UTC|newest]
Thread overview: 2+ messages / expand[flat|nested] mbox.gz Atom feed top
2021-03-10 11:52 bug#47043: 27.1; transparent PNG image scaled larger may be blurred ynyaaa
2021-03-10 14:41 ` Lars Ingebrigtsen [this message]
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