Nikolay Sivov : dwrite: Fix feature mask for non-global features.

[Alexandre Julliard]

Module: wine
Branch: master
Commit: 94b367e3e91212f5b68a13b897f878405580b404
URL:    https://source.winehq.org/git/wine.git/?a=commit;h=94b367e3e91212f5b68a13b897f878405580b404

Author: Nikolay Sivov <nsivov at codeweavers.com>
Date:   Wed Jan 20 17:02:34 2021 +0300

dwrite: Fix feature mask for non-global features.

Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
Signed-off-by: Alexandre Julliard <julliard at winehq.org>

---

 dlls/dwrite/opentype.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/dlls/dwrite/opentype.c b/dlls/dwrite/opentype.c
index 7c30678234a..a025227dfda 100644
--- a/dlls/dwrite/opentype.c
+++ b/dlls/dwrite/opentype.c
@@ -4518,7 +4518,10 @@ static void opentype_layout_collect_lookups(struct scriptshaping_context *contex
         if ((feature->flags & FEATURE_GLOBAL) && feature->max_value == 1)
             bits_needed = 0;
         else
+        {
             BitScanReverse(&bits_needed, min(feature->max_value, 256));
+            bits_needed++;
+        }
 
         if (!feature->max_value || next_bit + bits_needed > 8 * sizeof (feature->mask))
             continue;