Bug 105626

Summary:	Wavy rendering with freetype2.1.10 and IPA fonts
Product:	[openSUSE] SUSE LINUX 10.0	Reporter:	Takashi Iwai <tiwai>
Component:	X11 Applications	Assignee:	Mike Fabian <mfabian>
Status:	RESOLVED FIXED	QA Contact:	Stefan Dirsch <sndirsch>
Severity:	Normal
Priority:	P5 - None	CC:	shinkichi.yamazaki, wl
Version:	Beta 2
Target Milestone:	---
Hardware:	Other
OS:	All
Whiteboard:
Found By:	Other	Services Priority:
Business Priority:		Blocker:	---
Marketing QA Status:	---	IT Deployment:	---

Description Takashi Iwai 2005-08-18 16:58:56 UTC

Mozilla shows small latin latters of IPAGothic fonts in a wavy line.
The older freetype on 9.3 doesn't show this behavior.

An example is: http://kerneltrap.org/node/5557

Comment 1 Mike Fabian 2005-08-19 20:30:16 UTC

as a quick workaround, I switched off the hinting for the IPA fonts.
Submitted to STABLE:
-------------------------------------------------------------------
Fri Aug 19 22:09:49 CEST 2005 - mfabian@suse.de

- Bugzilla #105626: work around the loss of rendering quality
  for the IPA fonts caused by the update to freetype 2.1.10 by
  switching off the hinting for the IPA fonts.

-------------------------------------------------------------------

In the long run, the rendering quality for CJK fonts of freetype
should be improved again. I'll try to discuss this on the mailing
lists but it might not be possible until the release
of SuSE Linux 10.0.

Comment 2 Mike Fabian 2005-08-22 10:50:56 UTC

*** Bug 105190 has been marked as a duplicate of this bug. ***

Comment 3 Mike Fabian 2005-08-23 11:02:10 UTC

Adding Werner Lemberg <wl@gnu.org> to the CC: (He is one of the main
freetype authors).

Comment 4 Mike Fabian 2005-08-23 11:03:58 UTC

Up to freetype 2.1.9, the rendering for CJK fonts worked better
because we applied the patch from
http://www.kde.gr.jp/~akito/patch/freetype2/2.1.7 which improved the
autohinting for CJK a lot.

This patch is not so easy to adapt for freetype 2.1.10.

Comment 5 Mike Fabian 2006-01-09 15:33:50 UTC

Takashi IWAI <tiwai@suse.de> made nice new patches which improve the
autohinter for CJK fonts a lot.

freetype2 package with his patches submitted to STABLE.

Comment 6 Mike Fabian 2006-01-09 15:42:23 UTC

fonts-config package which does not disable the autohinter for the
IPA fonts anymore submitted to STABLE.

Comment 7 Mike Fabian 2006-02-08 12:32:34 UTC

FIXED.