From: Nikolay Sivov Subject: [PATCH] dwrite: Handle fonts with broken usWinDescent values Message-Id: <56084946.9000708@codeweavers.com> Date: Sun, 27 Sep 2015 22:53:42 +0300 --- From 8f47a976d7bb9dab8c425c06e57488e8664a74a1 Mon Sep 17 00:00:00 2001 From: Nikolay Sivov Date: Sun, 27 Sep 2015 22:48:38 +0300 Subject: [PATCH] dwrite: Handle fonts with broken usWinDescent values Signed-off-by: Nikolay Sivov --- dlls/dwrite/opentype.c | 4 +++- 1 file changed, 3 insertions(+), 1 deletion(-) diff --git a/dlls/dwrite/opentype.c b/dlls/dwrite/opentype.c index fd471ef..82e0a9c 100644 --- a/dlls/dwrite/opentype.c +++ b/dlls/dwrite/opentype.c @@ -960,7 +960,9 @@ void opentype_get_font_metrics(IDWriteFontFileStream *stream, DWRITE_FONT_FACE_T USHORT version = GET_BE_WORD(tt_os2->version); metrics->ascent = GET_BE_WORD(tt_os2->usWinAscent); - metrics->descent = GET_BE_WORD(tt_os2->usWinDescent); + /* Some fonts have usWinDescent value stored as signed short, which could be wrongly + interpreted as large unsigned value. */ + metrics->descent = abs((SHORT)GET_BE_WORD(tt_os2->usWinDescent)); /* line gap is estimated using two sets of ascender/descender values and 'hhea' line gap */ if (tt_hhea) { -- 2.5.3