From: Grigori Goronzy <greg@blackbox>
Date: Wed, 24 Jun 2009 21:48:05 +0000 (+0200)
Subject: Correct vertical glyph positioning for \fay
X-Git-Tag: 0.9.7~100
X-Git-Url: https://granicus.if.org/sourcecode?a=commitdiff_plain;h=b53fb2ad554440646f5dfe781459af058ba11f8f;p=libass

Correct vertical glyph positioning for \fay

Offset the next glyph by the total shear of the glyph before.
This is done before line-wrapping, so that a line that is vertically
sheared will get as much higher, as it is sheared. Fine by me, but
vsfilter probably does it in a different way.
---

diff --git a/libass/ass_render.c b/libass/ass_render.c
index 385821e..b405e18 100644
--- a/libass/ass_render.c
+++ b/libass/ass_render.c
@@ -2285,6 +2285,8 @@ ass_render_event(ass_renderer_t *render_priv, ass_event_t *event,
         pen.x += text_info->glyphs[text_info->length].advance.x;
         pen.x += double_to_d6(render_priv->state.hspacing);
         pen.y += text_info->glyphs[text_info->length].advance.y;
+        pen.y += render_priv->state.fay *
+                 text_info->glyphs[text_info->length].advance.x;
 
         previous = code;