[gtk/pango-glyph-positions: 4390/4390] gsk: Fix render node serialization

[Matthias Clasen <matthiasc src gnome org>]

commit 20fb155e8c360b0c84f3115e6fd7b32fbea130e9
Author: Matthias Clasen <mclasen redhat com>
Date:   Thu Jan 28 18:19:42 2021 -0500

    gsk: Fix render node serialization
    
    When looking for ascii glyphs, we must match
    the pango shape flags that GTK is using.

 gsk/gskrendernodeparser.c | 12 +++++++-----
 1 file changed, 7 insertions(+), 5 deletions(-)
---
diff --git a/gsk/gskrendernodeparser.c b/gsk/gskrendernodeparser.c
index 90183482f2..c53597732d 100644
--- a/gsk/gskrendernodeparser.c
+++ b/gsk/gskrendernodeparser.c
@@ -689,14 +689,16 @@ create_ascii_glyphs (PangoFont *font)
   for (i = MIN_ASCII_GLYPH; i < MAX_ASCII_GLYPH; i++)
     {
       const char text[2] = { i, 0 };
+      PangoShapeFlags flags = 0;
 
-      pango_shape_with_flags (text,
-                              1,
-                              text,
-                              1,
+      if (cairo_version () < CAIRO_VERSION_ENCODE (1, 17, 4))
+        flags = PANGO_SHAPE_ROUND_POSITIONS;
+
+      pango_shape_with_flags (text, 1,
+                              text, 1,
                               &not_a_hack,
                               glyph_string,
-                              PANGO_SHAPE_ROUND_POSITIONS);
+                              flags);
 
       if (glyph_string->num_glyphs != 1)
         {