[gtk: 3/3] Merge branch 'legacy-gl' into 'master'

[Emmanuele Bassi <ebassi src gnome org>]

commit 9dc679370cced09cc2166b640064a6a755b6aec9
Merge: 033cf4bfb7 19873e549a
Author: Emmanuele Bassi <ebassi gmail com>
Date:   Tue Jul 17 11:07:27 2018 +0000

    Merge branch 'legacy-gl' into 'master'
    
    fix the OpenGL renderer for legacy contexts
    
    See merge request GNOME/gtk!240

 gsk/resources/glsl/gl_common.fs.glsl | 97 ++++++++++++++++++++++++++++++++++--
 gsk/resources/glsl/gl_common.vs.glsl |  3 +-
 2 files changed, 94 insertions(+), 6 deletions(-)
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