From: Eli Zaretskii <eliz@gnu.org>
To: Cecilio Pardo <cpardo@imayhem.com>
Cc: 73730@debbugs.gnu.org
Subject: bug#73730: 31.0.50; Support for color fonts on MS-Windows
Date: Wed, 23 Oct 2024 20:53:12 +0300 [thread overview]
Message-ID: <86bjzaemev.fsf@gnu.org> (raw)
In-Reply-To: <dd9d1fe5-5410-4456-a2ee-eb1e9c1f1b9a@imayhem.com> (message from Cecilio Pardo on Wed, 23 Oct 2024 16:17:03 +0200)
> Date: Wed, 23 Oct 2024 16:17:03 +0200
> From: Cecilio Pardo <cpardo@imayhem.com>
>
>
> On 23/10/2024 12:03, Eli Zaretskii wrote:
>
> >> - DirectWrite is available since Windows 7, but color glyphs are
> >> available only since Windows 8.1. We only enable DirectWrite since
> >> Windows 8.1. This is stated on the NEWS entry.
> >
> > Sounds okay, but I don't see the Windows version tested anywhere in
> > the code which initializes DWrite. What did I miss?
>
> The IDWriteFactory2 interface is only available from 8.1, so it will
> fail on previous versions when we request it in
> w32_initialize_direct_write.
OK, so please add a comment there to this effect.
> >> - The default value for the Gamma render parameter in DirectWrite
> >> gives very 'light' characters. I changed it to 1.4, which matches
> >> GDI and looks better. But that's just my opinion.
> >
> > Does the best value depend on whether the theme is light or dark?
>
> No, it looks too dim for me on both.
>
> > In any case, this sounds like a good candidate for a variable that people
> > could modify if they want. Maybe we should also expose to Lisp the
> > values of enhanced contrast and clear-type level? Assuming that
> > setting these from .emacs (or maybe in early-init?) at all could take
> > effect, that is.
>
> [...]
>
> > Does it work to set w32-inhibit-dwrite in the .emacs init file?
>
> If you change it in .emacs or early-int it will work, but will not
> prevent dwrite initialization and some text output. I am
> initializing on syms_of_w32uniscribe_for_pdumper. Could I initialize
> on some other place, so that the user can skip dwrite completely?
> Also, it will allow to add configuracion variables for Gamma, etc,
> without having to reinit if the user sets them.
Initializing dwrite even though the user said we shouldn't use it
doesn't sound too bad to me. We could provide a function to
reinitialize (if it's needed) and document that it should be called if
the user wants to disable dwrite in the init file. I wouldn't go
farther than this unless we get complaints and discover that
initializing dwrite could cause trouble in some configurations.
next prev parent reply other threads:[~2024-10-23 17:53 UTC|newest]
Thread overview: 40+ messages / expand[flat|nested] mbox.gz Atom feed top
2024-10-10 11:16 bug#73730: 31.0.50; Support for color fonts on MS-Windows Cecilio Pardo
2024-10-10 13:08 ` Eli Zaretskii
2024-10-10 15:14 ` Cecilio Pardo
2024-10-10 16:33 ` Eli Zaretskii
2024-10-10 16:46 ` Cecilio Pardo
2024-10-15 22:18 ` Cecilio Pardo
2024-10-16 11:01 ` Eli Zaretskii
2024-10-16 11:32 ` Eli Zaretskii
2024-10-16 21:35 ` Cecilio Pardo
2024-10-17 6:21 ` Eli Zaretskii
2024-10-17 10:38 ` Cecilio Pardo
2024-10-20 13:35 ` Cecilio Pardo
2024-10-20 13:55 ` Eli Zaretskii
2024-10-22 22:14 ` Cecilio Pardo
2024-10-23 10:03 ` Eli Zaretskii
2024-10-23 14:17 ` Cecilio Pardo
2024-10-23 17:53 ` Eli Zaretskii [this message]
2024-10-24 20:19 ` Cecilio Pardo
2024-10-25 7:26 ` Eli Zaretskii
2024-10-25 10:17 ` Cecilio Pardo
2024-10-25 12:00 ` Eli Zaretskii
2024-10-26 20:13 ` Cecilio Pardo
2024-10-27 6:36 ` Eli Zaretskii
2024-10-27 13:32 ` Eli Zaretskii
2024-10-27 13:41 ` Cecilio Pardo
2024-10-27 15:44 ` Cecilio Pardo
2024-10-27 16:54 ` Eli Zaretskii
2024-10-27 17:50 ` Cecilio Pardo
2024-10-27 19:15 ` Eli Zaretskii
2024-10-29 8:57 ` Cecilio Pardo
2024-10-25 11:51 ` Eli Zaretskii
2024-10-25 13:43 ` Cecilio Pardo
2024-10-20 16:17 ` Eli Zaretskii
2024-10-20 18:20 ` Cecilio Pardo
2024-10-20 18:33 ` Eli Zaretskii
2024-10-20 18:37 ` Cecilio Pardo
2024-10-10 21:50 ` Cecilio Pardo
2024-10-11 3:36 ` Eli Zaretskii
2024-10-11 6:28 ` Eli Zaretskii
2024-10-11 7:19 ` Cecilio Pardo
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