From: Dr.Smile <vabnick@gmail.com>
Date: Thu, 15 Jan 2015 17:53:57 +0000 (+0300)
Subject: Fix rare edge-case bug in rasterizer
X-Git-Tag: 0.12.2~22
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=fc0b84c7b230f35dcf3be4695d6d45142922ed8c;p=libass

Fix rare edge-case bug in rasterizer
---

diff --git a/libass/ass_rasterizer.c b/libass/ass_rasterizer.c
index 84f9a88..ee19ad4 100644
--- a/libass/ass_rasterizer.c
+++ b/libass/ass_rasterizer.c
@@ -669,8 +669,11 @@ static int rasterizer_fill_level(ASS_Rasterizer *rst,
         return 1;
     }
     if (n == 1) {
+        static const int test = SEGFLAG_UL_DR | SEGFLAG_EXACT_LEFT;
+        if (((line->flags & test) != test) == !(line->flags & SEGFLAG_DN))
+            winding++;
+
         int flag = 0;
-        if (line->c < 0)winding++;
         if (winding)
             flag ^= 1;
         if (winding - 1)