[PATCH] dwrite: Fix feature mask for non-global features.
Nikolay Sivov
nsivov at codeweavers.com
Wed Jan 20 08:02:34 CST 2021
Signed-off-by: Nikolay Sivov <nsivov at codeweavers.com>
---
BitScanReverse() returns zero-based position.
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;
--
2.29.2
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