[Bug 458592] New: Different render in the original and 1.0.4 version

[Bug 472637] New: libpng.so:...

[Bug 459451] New: Changes in glyph...

Red Hat Bugzilla

Sunday, 10 August 2008 Sun, 10 Aug '08

11:53 a.m.

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. Summary: Different render in the original and 1.0.4 version https://bugzilla.redhat.com/show_bug.cgi?id=458592 Summary: Different render in the original and 1.0.4 version Product: Fedora Version: rawhide Platform: All OS/Version: Linux Status: NEW Severity: medium Priority: medium Component: liberation-fonts AssignedTo: cchance(a)redhat.com ReportedBy: beuc(a)beuc.net QAContact: extras-qa(a)fedoraproject.org CC: fedora-fonts-bugs-list(a)redhat.com Estimated Hours: 0.0 Classification: Fedora Description of problem: I was using the LiberationSans version from the original announcement at https://www.redhat.com/f/fonts/liberation-fonts-ttf-3.tar.gz (now 404). I replaced it with 1.0.4 from https://fedorahosted.org/liberation-fonts/ . I use this fonts in a game engine that is ported from Windows, and that was using Arial originally. The font rendering is done through SDL_ttf (with style TTF_STYLE_BOLD) which itself called libfreetype6. The new version of the font has a decreased quality. I attach 2 screenshots with the 2 different versions. Check for example the "y": the top of the letter isn't aligned with the top of the other letters. Note that the screenshots are taken from Debian Lenny, whose libfreetype6 has TT_CONFIG_OPTION_BYTECODE_INTERPRETER activated. Version-Release number of selected component (if applicable): 1.0.4 How reproducible: Always Steps to Reproduce: The game is in development, I don't have a short procedure to install the game right now, but let me know if you're interested in that. Actual results: Irregular letters. Apparent regression in font quality. Expected results: Improved quality ;) Additional info: -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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Red Hat Bugzilla

Sunday, 10 August Sun, 10 Aug

11:54 a.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #1 from Sylvain Beucler <beuc(a)beuc.net> 2008-08-10 12:54:50 EDT --- Created an attachment (id=313895) --> (https://bugzilla.redhat.com/attachment.cgi?id=313895) Screenshot with LiberationSans 2007 -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

11:55 a.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #2 from Sylvain Beucler <beuc(a)beuc.net> 2008-08-10 12:55:32 EDT --- Created an attachment (id=313896) --> (https://bugzilla.redhat.com/attachment.cgi?id=313896) Screenshot with LiberationSans 2008 1.0.4 -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

Monday, 11 August Mon, 11 Aug

1:29 a.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 Caius CHANCE <cchance(a)redhat.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|NEW |ASSIGNED Customer Facing| |--- -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

1:51 a.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #3 from Caius CHANCE <cchance(a)redhat.com> 2008-08-11 02:51:10 EDT --- Are two results generated on same environment? I don't use libfreetype6 so I couldn't comment if there are any effects from that. I have used fontforge to compare all points of both 'y' glyphs, tested their interactions with other alphabets in metrics window, also all settings in 'glyph info' but couldn't found any difference on data side. The 1.03 binaries was produced by original manufacturer WIN32 software. Then the ttfs have been converted into .sfd format by fontforge. FYI, .sfd is fontforge main font format which is open sourced. Since the conversion, we kept such .sfd files as "original sources" of Liberation Fonts and hosted on public website. However, in fact the original .ttf files from manufacturer contained some proprietary tables or tables that fontforge doesn't read. This might be the factor of losing data. Therefore, we kept the 1.03 binary available on the hosting for those people who preferred 1.03. It is not feasible for a loss free conversion solution at the moment due to limitation of fontforge and lack of project commitments from the public. Besides the fonts themselves, the change of rendering engines might be also another reason of this situation. I have no quick solution right now but suggest you include ver 1.03 as static font in the game package until someone worked out a better solution. BTW, you could test this again on the rawhide (development version Fedora) to keep an eye on if latest changes of the OS fixed this in other ways. -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

12:45 p.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

...

Are two results generated on same environment?

Yes, exactly the same, except for the font.

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I don't use libfreetype6 so I couldn't comment if there are any effects from that.

Note that Fedora has TT_CONFIG_OPTION_BYTECODE_INTERPRETER disabled because of patents treats (while it is activated in Debian and Gentoo, for example). This prevents the hinting bytecode interpreter to work, and changes the rendering and size quite a bit. However, I only get enabling compatible size when the hinting bytecode interpreter is enabled: under Fedora I couldn't get the same text size than under Windows for the game engine. I attach 2 screenshots, showing FreeType's 'ftview' utility with size 16 and anti-aliasing disabled (what the game uses). Left is 1.03, right is 1.04. The first screenshot has glyph hinting on, the second has it off. On the first one you'll see the difference on "y". This could mean that the hinting bytecode was not or not properly imported in fontforge, which would be embarrassing.

...

Therefore, we kept the 1.03 binary available on the hosting for those people who preferred 1.03.

Indeed 1.03 doesn't present this issue. -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

12:45 p.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #5 from Sylvain Beucler <beuc(a)beuc.net> 2008-08-11 13:45:50 EDT --- Created an attachment (id=313987) --> (https://bugzilla.redhat.com/attachment.cgi?id=313987) 1. hinting on -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

12:46 p.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #6 from Sylvain Beucler <beuc(a)beuc.net> 2008-08-11 13:46:15 EDT --- Created an attachment (id=313988) --> (https://bugzilla.redhat.com/attachment.cgi?id=313988) 2. hinting off -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

Monday, 18 August Mon, 18 Aug

8:35 p.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 Caius CHANCE <cchance(a)redhat.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Depends on| |459451 --- Comment #7 from Caius CHANCE <cchance(a)redhat.com> 2008-08-18 21:35:26 EDT --- Possible bug #459451 is discovered in fontforge which avoid me to change glyph point settings on such char in liberation fonts, set this bz depends on that. -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

Wednesday, 20 August Wed, 20 Aug

11:40 p.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #8 from Caius CHANCE <cchance(a)redhat.com> 2008-08-21 00:40:45 EDT --- Hi Sylvain, I am going to do a triage of bug: - Install the game on Fedora. - Install the game on Debian. Would you please explain the procedures of installation? -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

Thursday, 21 August Thu, 21 Aug

12:40 a.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #9 from Jens Petersen <petersen(a)redhat.com> 2008-08-21 01:40:26 EDT --- Sylvain, are you able to reproduce the problem on debian or gentoo for other apps? -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

12:43 a.m.

New subject: [Bug 458592] Different render in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #10 from Jens Petersen <petersen(a)redhat.com> 2008-08-21 01:43:18 EDT --- Caius, actually I think attachment 313987 is quite clear - so you should be able to reproduce on Debian with that. -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

1:35 a.m.

New subject: [Bug 458592] Differences in rendering in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 Jens Petersen <petersen(a)redhat.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Summary|Different render in the |Differences in rendering in |original and 1.0.4 version |the original and 1.0.4 | |version --- Comment #11 from Jens Petersen <petersen(a)redhat.com> 2008-08-21 02:35:30 EDT --- It is funny how only 'y' based glyphs seem much affected in that screenshot anyway. I tried on Ubuntu-8.04 but didn't see it there FWIW. Sylvain, do you know when TT_CONFIG_OPTION_BYTECODE_INTERPRETER was activated: I mean which package version of freetype? -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

12:52 p.m.

New subject: [Bug 458592] Differences in rendering in the original and 1.0.4 version

...

Sylvain, do you know when TT_CONFIG_OPTION_BYTECODE_INTERPRETER was activated: I mean which package version of freetype?

Probably since 2006: freetype (2.2.1-2) unstable; urgency=low * Enable full bytecode interpreter instead of just the "non-patented portions". * Use $(CURDIR) instead of $(PWD) to build with sudo. Closes: #367579. -- Keith Packard <keithp(a)keithp.com> Wed, 17 May 2006 00:00:35 -0500 http://packages.debian.org/changelogs/pool/main/f/freetype/freetype_2.3.7...

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Sylvain, are you able to reproduce the problem on debian or gentoo for other apps?

With SDL_ttf and freetype2-demos, yes. I think other apps usually turn onanti-aliasing which works-around the issue. Note that Gentoo disables it in binary packages, but enables it in recompiled packages.

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I tried on Ubuntu-8.04 but didn't see it there FWIW.

I just Tried on gNewSense (Ubuntu) LiveCD and it shows for me. Procedure: - 'ftview 16 liberation-fonts-1.04/LiverationSans-Regular.ttf' - Type 'a' -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

6:44 p.m.

New subject: [Bug 458592] Differences in rendering in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #13 from Jens Petersen <petersen(a)redhat.com> 2008-08-21 19:44:32 EDT --- Thanks! Easily reproduced on Ubuntu-8.04 too. -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

Sunday, 24 August Sun, 24 Aug

9:45 p.m.

New subject: [Bug 458592] Differences in rendering in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #14 from Caius CHANCE <cchance(a)redhat.com> 2008-08-24 22:45:33 EDT --- Trying to fix with patched fontforge. -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

Monday, 25 August Mon, 25 Aug

12:22 a.m.

New subject: [Bug 458592] Differences in rendering in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #15 from Caius CHANCE <cchance(a)redhat.com> 2008-08-25 01:22:42 EDT --- Created an attachment (id=314902) --> (https://bugzilla.redhat.com/attachment.cgi?id=314902) Sample patched 1.04, with 'y' glyph points and hinting instructions 're-cloned' from 1.03. -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

12:35 a.m.

New subject: [Bug 458592] Differences in rendering in the original and 1.0.4 version

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #16 from Jens Petersen <petersen(a)redhat.com> 2008-08-25 01:35:27 EDT --- Here is the fontforge upstream thread for reference: http://sourceforge.net/mailarchive/forum.php?thread_name=10325386.3712192... -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

1:44 a.m.

New subject: [Bug 458592] Incorrect glyph points and missing hinting instructions for U+0079, U+03BC, U+0431, U+2010..2012.

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 Caius CHANCE <cchance(a)redhat.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Keywords| |i18n Summary|Differences in rendering in |Incorrect glyph points and |the original and 1.0.4 |missing hinting |version |instructions for U+0079, | |U+03BC, U+0431, | |U+2010..2012. -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

1:57 a.m.

New subject: [Bug 458592] Incorrect glyph points and missing hinting instructions for U+0079, U+03BC, U+0431, U+2010..2012.

Red Hat Bugzilla

11:30 p.m.

New subject: [Bug 458592] Incorrect glyph points and missing hinting instructions for U+0079, U+03BC, U+0431, U+2010..2012.

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 Caius CHANCE <cchance(a)redhat.com> changed: What |Removed |Added ---------------------------------------------------------------------------- Status|ASSIGNED |CLOSED Resolution| |RAWHIDE --- Comment #18 from Caius CHANCE <cchance(a)redhat.com> 2008-08-26 00:30:09 EDT --- Built in rawhide: http://koji.fedoraproject.org/koji/taskinfo?taskID=785966 -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

Tuesday, 26 August Tue, 26 Aug

2:58 p.m.

New subject: [Bug 458592] Incorrect glyph points and missing hinting instructions for U+0079, U+03BC, U+0431, U+2010..2012.

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 --- Comment #19 from Sylvain Beucler <beuc(a)beuc.net> 2008-08-26 15:58:37 EDT --- Great! By the way, I saw that this bug was also reported in the Trac instance a couple months ago: https://fedorahosted.org/liberation-fonts/report/1 https://fedorahosted.org/liberation-fonts/ticket/2 You may want to close it (and possibly disable the bug tracker there). -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

Red Hat Bugzilla

Tuesday, 16 December Tue, 16 Dec

5:19 p.m.

New subject: [Bug 458592] Incorrect glyph points and missing hinting instructions for U+0079, U+03BC, U+0431, U+2010..2012.

Please do not reply directly to this email. All additional comments should be made in the comments box of this bug. https://bugzilla.redhat.com/show_bug.cgi?id=458592 Bug 458592 depends on bug 459451, which changed state. Bug 459451 Summary: Changes in glyph point settings window could not be applied. https://bugzilla.redhat.com/show_bug.cgi?id=459451 What |Old Value |New Value ---------------------------------------------------------------------------- Status|ASSIGNED |CLOSED Resolution| |CURRENTRELEASE -- Configure bugmail: https://bugzilla.redhat.com/userprefs.cgi?tab=email ------- You are receiving this mail because: ------- You are on the CC list for the bug.

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[Bug 458592] New: Different render in the original and 1.0.4 version