[gtk/pango-glyph-positions] Tell pango not to round glyph positions

[Matthias Clasen <matthiasc src gnome org>]

commit 458846ff7fcfc236e3e8f90c5b407347225a3f72
Author: Matthias Clasen <mclasen redhat com>
Date:   Sat Jun 6 21:10:43 2020 -0400

    Tell pango not to round glyph positions
    
    We want to use subpixel positioning.

 gtk/gtkwidget.c | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)
---
diff --git a/gtk/gtkwidget.c b/gtk/gtkwidget.c
index 91ad52e502..b99f4f25f2 100644
--- a/gtk/gtkwidget.c
+++ b/gtk/gtkwidget.c
@@ -6222,12 +6222,13 @@ update_pango_context (GtkWidget    *widget,
 
   font_desc = gtk_css_style_get_pango_font (style);
   pango_context_set_font_description (context, font_desc);
-
   pango_font_description_free (font_desc);
 
+  pango_context_set_round_glyph_positions (context, FALSE);
+
   pango_context_set_base_dir (context,
-                             _gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR ?
-                             PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL);
+                             _gtk_widget_get_direction (widget) == GTK_TEXT_DIR_LTR ?
+                              PANGO_DIRECTION_LTR : PANGO_DIRECTION_RTL);
 
   pango_cairo_context_set_resolution (context, _gtk_css_number_value_get (style->core->dpi, 100));