[Bug 106] freetype-2.1.3

Dagmar d'Surreal no.spam at allowed.here
Wed Jan 8 21:17:12 PST 2003


On Wed, 2003-01-08 at 04:31, Jeroen Coumans wrote:
> On Tuesday 07 January 2003 20:06, Seth W.Klein wrote:
> > This discussion has me interested. When you say you prefer no
> > bytecode interpreter on an LCD, do you mean when viewing the MS Web
> > Fonts that Dagmar mentioned?
> 
> Yep, I have tahoma and arial as my "standard" fonts and they are less 
> jagged and more clear then with the bytecode interpreter. In fact, if 
> you continue to use the bytecode interpreter, you will not see any 
> difference with the MS fonts (at least not on my screen). In the KDE 
> control center is a new option to define the mode for sub-pixel 
> hinting; in its RGB mode it looks a lot like MS Clear Type but then 
> less hard. Have a look at 
> http://www.freetype.org/hinting/smooth-hinting.html
> Btw this is with bleeding-edge software; XFree86-CVS; KDE-3.1rc6. The X 
> version also makes a difference in my experience. 

That is a handy URL indeed, especially considering that there is a
definite difference in rendering between 2.1.2 and 2.1.3.  However, to
see what I meant about the hinting, take a gander at
http://www.speakeasy.org/~dagmar/xchat which is just some screenshots I
threw up to try to show jdub what I was talking about in reference to
some obnoxiousness with white-on-black/black-on-white differences in
rendering anti-aliased text.  I've now got the patent-violating
interpreter off because it appears that the hinting in Trebuchet MS
*also* compensates for the wob/bow issue with the end result being that
parts of letters go completely AWOL in xchat now that it's no longer
drawing the text in channel windows twice(*).  (With 1.9.7 it drew text
over itself which resulted in a super-readable white-on-black display,
but that was taken out in the switch from Xft to Pango in 1.9.8, leaving
me with a superbly crappy display)  Ignore the xchat window, the
important thing is what shows in gedit as I slap different binaries of
the Freetype library in and out.

...for the uninitiated, the anti-aliasing done by Freetype is biased in
favor of dark text on a light background, which is why light text on a
dark background looks pretty washed out.

(* The _fun_ thing is that while no one complained about slow screen
updates before, there've been several reports of slow redraws using AA'd
fonts with Pango & 1.9.8.  Go figure.  Me personally, I want the
double-drawing back in there.  Heh.)

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