[gtk: 3/3] Merge branch 'wip/otte/texture-threads' into 'master'

[Benjamin Otte <otte src gnome org>]

commit f572ca52d237e628cc61036a394b46a50dd433ee
Merge: b9ee9979e7 193b383739
Author: Benjamin Otte <otte benjamin googlemail com>
Date:   Mon Sep 13 00:16:30 2021 +0000

    Merge branch 'wip/otte/texture-threads' into 'master'
    
    gltexture: Make sure downloading textures works in a different thread
    
    See merge request GNOME/gtk!3942

 gdk/gdkgltexture.c              | 135 ++++++++++++++++++++++++----------------
 gsk/ngl/gskngldriver.c          |  27 +++-----
 testsuite/gdk/meson.build       |   1 +
 testsuite/gdk/texture-threads.c | 103 ++++++++++++++++++++++++++++++
 4 files changed, 195 insertions(+), 71 deletions(-)
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