Accepting request 926944 from home:susnux:branches:graphics

Add upstream patch (GIMP issue #6210)

OBS-URL: https://build.opensuse.org/request/show/926944
OBS-URL: https://build.opensuse.org/package/show/graphics/gimp?expand=0&rev=58

0001-Issue-6210-Subpixel-font-rendering-system-settings-s.patch

@@ -0,0 +1,38 @@
+From a08055f1a18886fdacaf0cba5887b7ff2f687732 Mon Sep 17 00:00:00 2001
+From: Adam Fontenot <adam.m.fontenot@gmail.com>
+Date: Tue, 19 Jan 2021 13:47:27 +0100
+Subject: [PATCH] =?UTF-8?q?Issue=20#6210:=20Subpixel=20font=20rendering=20?=
+ =?UTF-8?q?system=20settings=20should=20only=E2=80=A6?=
+MIME-Version: 1.0
+Content-Type: text/plain; charset=UTF-8
+Content-Transfer-Encoding: 8bit
+
+… apply to GIMP GUI not text layer rendering in image.
+
+Reviewer note: this is the theoretical fix, but it won't work right now
+because Cairo explicitly bypasses grayscale antialiasing when system set
+subpixel one. Still let's push this first patch, but the issue will be
+actually fixed when Cairo will merge my MR too:
+https://gitlab.freedesktop.org/cairo/cairo/-/merge_requests/114
+
+(cherry picked from commit 00bbeabaf4d8a434bd64371303ee982fb5403ab6)
+---
+ app/text/gimptextlayout.c | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/app/text/gimptextlayout.c b/app/text/gimptextlayout.c
+index 47beed7705..56c670ea0b 100644
+--- a/app/text/gimptextlayout.c
++++ b/app/text/gimptextlayout.c
+@@ -701,7 +701,7 @@ gimp_text_get_font_options (GimpText *text)
+   cairo_font_options_t *options = cairo_font_options_create ();
+ 
+   cairo_font_options_set_antialias (options, (text->antialias ?
+-                                              CAIRO_ANTIALIAS_DEFAULT :
++                                              CAIRO_ANTIALIAS_GRAY :
+                                               CAIRO_ANTIALIAS_NONE));
+ 
+   switch (text->hint_style)
+-- 
+2.33.1
+

gimp.changes

@@ -1,3 +1,12 @@
+-------------------------------------------------------------------
+Fri Oct 22 09:50:04 UTC 2021 - Ferdinand Thiessen <rpm@fthiessen.de>
+
+- Add upstream patch (GIMP issue #6210)
+  + 0001-Issue-6210-Subpixel-font-rendering-system-settings-s.patch
+    Fix issue where the textool produces false color artifacts
+    when using font anti-aliasing and system is set to subpixel
+    rendering.
+
 -------------------------------------------------------------------
 Thu Oct  7 12:50:49 UTC 2021 - Marcus Rueckert <mrueckert@suse.de>
 

gimp.spec

@@ -42,6 +42,8 @@ Source1:        macros.gimp
 # openSUSE palette file
 Source2:        openSUSE.gpl
 Source99:       baselibs.conf
+# https://gitlab.gnome.org/GNOME/gimp/-/commit/a08055f1a18886fdacaf0cba5887b7ff2f687732
+Patch0:         0001-Issue-6210-Subpixel-font-rendering-system-settings-s.patch
 
 BuildRequires:  aalib-devel
 BuildRequires:  alsa-devel >= 1.0.0
@@ -212,6 +214,7 @@ applications that want to make use of the GIMP libraries.
 
 %prep
 %setup -q
+%autopatch -p1
 
 export LC_ALL=en_US.UTF-8
 export LANG=en_US.UTF-8