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[HOWTO]Freetype subpixel font rendering - lcd monitors Pt 2
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devsk
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PostPosted: Mon Jan 05, 2009 12:39 am    Post subject: Reply with quote

Ok. found my issue. For some reason, I had 50-user.conf enabled and it has some weird stuff that the new patches don't like. I did 'eselect fontconfig disable 50-user.conf' and my fonts are looking good now.

Strangely, firefox and thunderbird were behaving differently. Firefox had weird fonts with 50-user.conf but thunderbird was fine with it. Now, both of them are fine. But its strange that there is something that makes them behave differently.
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yabbadabbadont
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PostPosted: Mon Jan 05, 2009 12:46 am    Post subject: Reply with quote

Code:
/home/daffy $ cat /etc/fonts/conf.d/50-user.conf
<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
        <!-- Load per-user customization file -->
        <include ignore_missing="yes">~/.fonts.conf</include>
</fontconfig>

50-user.conf does nothing but include your personal configuration... so the problem lies there. ;)
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devsk
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PostPosted: Mon Jan 05, 2009 12:58 am    Post subject: Reply with quote

yabbadabbadont wrote:
Code:
/home/daffy $ cat /etc/fonts/conf.d/50-user.conf
<?xml version="1.0"?>
<!DOCTYPE fontconfig SYSTEM "fonts.dtd">
<fontconfig>
        <!-- Load per-user customization file -->
        <include ignore_missing="yes">~/.fonts.conf</include>
</fontconfig>

50-user.conf does nothing but include your personal configuration... so the problem lies there. ;)
Yeah, I know. I meant my ~/.fonts.conf has something that the new patches don't like. That file gets created every time I touch KDE font settings and it looks like a bug with KDE that file is not in sync with global settings although I select the same things like full hinting with RGB. So, I changed KDE to use system settings and got rid of that file.
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F0RR
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PostPosted: Mon Jan 05, 2009 9:35 am    Post subject: Reply with quote

Thanks for new patch. Now everything is even better. But I still have problems with 0s and Os :cry:
Like this: http://img19.picoodle.com/img/img19/3/1/5/f_Screenshot5m_bd75d11.png
Help, please! :D
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ocin
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PostPosted: Mon Jan 05, 2009 1:23 pm    Post subject: Reply with quote

F0RR wrote:
Thanks for new patch. Now everything is even better. But I still have problems with 0s and Os :cry:
Like this: http://img19.picoodle.com/img/img19/3/1/5/f_Screenshot5m_bd75d11.png
Help, please! :D

Dunno bout O and 0 but you better disable lcd filtering for monospaced/fixed fonts (there is a config, user eselect fontconfig) so the quoted text will look fine too.
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treellama
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PostPosted: Mon Jan 05, 2009 2:52 pm    Post subject: Reply with quote

For me, USE=cleartype looks worse (lower contrast) than USE=newspr. This is probably because I don't use hinting. With hinting on, USE=cleartype looks a little better to me.
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ocin
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PostPosted: Tue Jan 06, 2009 1:05 am    Post subject: Reply with quote

it highly depends on your settings, for me with cleartype, autohint, hintfull and lcdfilter my fonts are awesome and I don't have any problems with O or 0.
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pezed
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PostPosted: Tue Jan 06, 2009 4:02 am    Post subject: Reply with quote

Does anyone have a list of things to mask off the top of their head to get fonts back to how they were say, last week with the devnull overlay? After this last update of world my fonts look horrible, especially in kde apps. no settings were changed with eselect.
*Edit*

heres a link to what i'm talking about, the I's and 1s especially look bad. Fonts seem too thin overall. has the previous freetype been completly removed from the overlay?

http://www.pezed.net/junk/bad_fonts.png

Another edit: After much experimenting i got most of my fonts looking good again, but Segoe UI still has the problem with I's that it didn't have before. Is there some patch that used to be included with the devnull freetype that isn't included now?
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pezed
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PostPosted: Tue Jan 06, 2009 7:48 am    Post subject: Reply with quote

OK! After a couple hours of experimentation i finally got things back looking good again. KDE and GTK are displaying fonts the same way again, and the rendering is good. In case anyone is wondering what i did:

add mask >=x11-libs/cairo-1.8.6-r1

re-emerge freetype, cairo, libXft, and fontconfig

use the following eselect fontconfig settings:

Code:
  [1]   10-antialias.conf *
  [2]   10-autohint.conf *
  [3]   10-hinting-full.conf
  [4]   10-hinting-medium.conf
  [5]   10-hinting-slight.conf *
  [6]   10-hinting.conf *
  [7]   10-no-sub-pixel.conf
  [8]   10-sub-pixel-bgr.conf
  [9]   10-sub-pixel-rgb.conf *
  [10]  10-sub-pixel-vbgr.conf
  [11]  10-sub-pixel-vrgb.conf
  [12]  10-unhinted.conf
  [13]  11-lcd-filter-lcddefault.conf *
  [14]  20-fix-globaladvance.conf *
  [15]  20-unhint-small-vera.conf *
  [16]  25-unhint-nonlatin.conf
  [17]  30-metric-aliases.conf *
  [18]  30-replace-bitmap-fonts.conf *
  [19]  30-urw-aliases.conf *
  [20]  40-nonlatin.conf *
  [21]  45-latin.conf *
  [22]  49-sansserif.conf *
  [23]  50-user.conf
  [24]  51-local.conf
  [25]  52-languageselector.conf *
  [26]  53-monospace-lcd-filter.conf *
  [27]  60-latin.conf *
  [28]  60-liberation.conf
  [29]  65-fonts-persian.conf *
  [30]  65-khmer.conf
  [31]  65-nonlatin.conf *
  [32]  69-unifont.conf *
  [33]  70-no-bitmaps.conf
  [34]  70-yes-bitmaps.conf
  [35]  80-delicious.conf *
  [36]  90-synthetic.conf *


I was about to lose my mind, especially after looking at my kubuntu laptop that still had nice fonts!
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mwhitlock
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PostPosted: Tue Jan 06, 2009 7:56 am    Post subject: Reply with quote

pezed wrote:
OK! After a couple hours of experimentation i finally got things back looking good again. KDE and GTK are displaying fonts the same way again, and the rendering is good. In case anyone is wondering what i did:

add mask >=x11-libs/cairo-1.8.6-r1

So in other words, don't use the cleartype-like patchset but rather newspr.
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pezed
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PostPosted: Tue Jan 06, 2009 8:02 am    Post subject: Reply with quote

mwhitlock wrote:
pezed wrote:
OK! After a couple hours of experimentation i finally got things back looking good again. KDE and GTK are displaying fonts the same way again, and the rendering is good. In case anyone is wondering what i did:

add mask >=x11-libs/cairo-1.8.6-r1

So in other words, don't use the cleartype-like patchset but rather newspr.


yes for sure. with the cleartype patched version, fonts in gtk apps looked too blurry as compared to kde apps, on my screen at least.
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mwhitlock
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PostPosted: Tue Jan 06, 2009 8:09 am    Post subject: Reply with quote

pezed wrote:
yes for sure. with the cleartype patched version, fonts in gtk apps looked too blurry as compared to kde apps, on my screen at least.

KDE doesn't use Cairo for its font rasterization, so that would explain the difference.

Frankly, I don't know what all the confusion is about. As I understand it, upstream FreeType now supports rasterizing font glyphs using subpixel filtering. Shouldn't libXft, cairo, and qt4 all simply be using the pixmaps directly from FreeType without altering them? It seems like everyone is trying to do their own tweaks, and we wind up with a "too many cooks spoil the broth" situation. Am I missing something?
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pezed
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PostPosted: Tue Jan 06, 2009 4:17 pm    Post subject: Reply with quote

mwhitlock wrote:
pezed wrote:
yes for sure. with the cleartype patched version, fonts in gtk apps looked too blurry as compared to kde apps, on my screen at least.

KDE doesn't use Cairo for its font rasterization, so that would explain the difference.

Frankly, I don't know what all the confusion is about. As I understand it, upstream FreeType now supports rasterizing font glyphs using subpixel filtering. Shouldn't libXft, cairo, and qt4 all simply be using the pixmaps directly from FreeType without altering them? It seems like everyone is trying to do their own tweaks, and we wind up with a "too many cooks spoil the broth" situation. Am I missing something?


I highly agree with that statement. Relying upon one lib such as freetype for the entire system makes everything more consistant. I think the problem currently maybe some issues with copyright infringement on the code freetype uses.

I just know that with newspr enabled and properly configured, my systems fonts look amazing, better than I've seen on any other OS (including MacOSX/Vista). Very sharp and easy on the eyes. It would be nice if this font rendering could somehow become the default in gentoo. Looking at gentoo screenshots on this forum, its "clear" that many users would benefit from better fonts! :lol:
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F0RR
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PostPosted: Tue Jan 06, 2009 4:25 pm    Post subject: Reply with quote

pezed, could you post your font configs here?
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pezed
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PostPosted: Tue Jan 06, 2009 8:53 pm    Post subject: Reply with quote

F0RR wrote:
pezed, could you post your font configs here?


a couple of posts up i showed my eselect fontconfig list

i haven't changed any other configs.
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Phlogiston
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PostPosted: Wed Jan 07, 2009 3:56 pm    Post subject: Reply with quote

Is this tar+http://ogmrip.sourceforge.net/misc/gentoo-lcd-filtering.tar.bz2 still updated?
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bi3l
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PostPosted: Wed Jan 07, 2009 5:05 pm    Post subject: Reply with quote

Phlogiston wrote:
Is this tar+http://ogmrip.sourceforge.net/misc/gentoo-lcd-filtering.tar.bz2 still updated?

It will be as soon as I can find some time to work on it..
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devsk
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PostPosted: Wed Jan 07, 2009 5:09 pm    Post subject: Reply with quote

Does anyone else see a memory leak in firefox because of subpixel full hinting?
Code:
18777 ilame   20   0 1459m 976m  18m S    5 24.7 190:37.09 firefox
Thats a gig of my RAM.... 8O

I don't get such a leak if I don't use subpixel hinting at full.
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Phlogiston
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PostPosted: Wed Jan 07, 2009 8:11 pm    Post subject: Reply with quote

bi3l wrote:
Phlogiston wrote:
Is this tar+http://ogmrip.sourceforge.net/misc/gentoo-lcd-filtering.tar.bz2 still updated?

It will be as soon as I can find some time to work on it..


No problem, or is a newer version somewhere in an overlay? Anyway what about this new cleartype? Can someone please sum the changes up?
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yabbadabbadont
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PostPosted: Wed Jan 07, 2009 8:22 pm    Post subject: Reply with quote

Just as a test, I removed the overlay and tried just using the keyword masked versions in the main portage tree. The difference is so slight (for me at least), that I am just sticking with the packages in the main tree for now.

Edit: Here are the versions and USE flags I'm using. I would be interested to hear if anyone else has the same experience.
Code:
$ emerge -pv libXft freetype fontconfig cairo

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] media-libs/freetype-2.3.7-r1  USE="X -bindist -debug -doc -utils" 0 kB
[ebuild   R   ] media-libs/fontconfig-2.6.0-r2  USE="-doc" 0 kB
[ebuild   R   ] x11-libs/libXft-2.1.13  USE="-debug" 0 kB
[ebuild   R   ] x11-libs/cairo-1.8.6  USE="X cleartype opengl svg -debug -directfb -doc -glitz -xcb" 0 kB

Total: 4 packages (4 reinstalls), Size of downloads: 0 kB


Last edited by yabbadabbadont on Wed Jan 07, 2009 8:26 pm; edited 1 time in total
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Phlogiston
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PostPosted: Wed Jan 07, 2009 8:25 pm    Post subject: Reply with quote

yabbadabbadont wrote:
Just as a test, I removed the overlay and tried just using the keyword masked versions in the main portage tree. The difference is so slight (for me at least), that I am just sticking with the packages in the main tree for now.


interesting, what versions and useflag do you use? cleartype?
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yabbadabbadont
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PostPosted: Wed Jan 07, 2009 8:27 pm    Post subject: Reply with quote

I guess I was editing my original post with the information you requested, as you were requesting it... :D
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devsk
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PostPosted: Wed Jan 07, 2009 9:58 pm    Post subject: Reply with quote

yabbadabbadont wrote:
Just as a test, I removed the overlay and tried just using the keyword masked versions in the main portage tree. The difference is so slight (for me at least), that I am just sticking with the packages in the main tree for now.

Edit: Here are the versions and USE flags I'm using. I would be interested to hear if anyone else has the same experience.
Code:
$ emerge -pv libXft freetype fontconfig cairo

These are the packages that would be merged, in order:

Calculating dependencies... done!
[ebuild   R   ] media-libs/freetype-2.3.7-r1  USE="X -bindist -debug -doc -utils" 0 kB
[ebuild   R   ] media-libs/fontconfig-2.6.0-r2  USE="-doc" 0 kB
[ebuild   R   ] x11-libs/libXft-2.1.13  USE="-debug" 0 kB
[ebuild   R   ] x11-libs/cairo-1.8.6  USE="X cleartype opengl svg -debug -directfb -doc -glitz -xcb" 0 kB

Total: 4 packages (4 reinstalls), Size of downloads: 0 kB


I thought you will need at least the latest pixman apart from these. pixman in portage is older than the one in devnull. When I started out with this, until I upgraded my pixman, I had horrible fonts.
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yabbadabbadont
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PostPosted: Wed Jan 07, 2009 10:20 pm    Post subject: Reply with quote

devsk wrote:
I thought you will need at least the latest pixman apart from these. pixman in portage is older than the one in devnull. When I started out with this, until I upgraded my pixman, I had horrible fonts.

pixman-0.12.0 is in the portage tree, just keyword masked.
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bi3l
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PostPosted: Wed Jan 07, 2009 10:44 pm    Post subject: Reply with quote

I've updated the tarball:
- freetype to 2.3.7-r1 (latest ubuntu, archlinux and portage patches)
- cairo to 1.8.6 (latest ubuntu and archlinux patches)
- libXft to 2.1.13 (latest archlinux patches)

I've also added pixman 0.13.2 (shamelessly stolen from devnull :wink: )
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