[Bug 10342] Add support for SubPixel font rendering

[wine-bugs at winehq.org]

http://bugs.winehq.org/show_bug.cgi?id=10342


BlackStar <BurnSpamAddress at gmail.com> changed:

           What    |Removed                     |Added
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                 CC|                            |BurnSpamAddress at gmail.com




--- Comment #21 from BlackStar <BurnSpamAddress at gmail.com>  2008-11-25 06:05:44 ---
Maybe this will help clean up the confusion on ClearType vs FreeType:

ClearType is a specific set of proprietary font-rendering algorithms that
perform antialiasing, hinting and subpixel rendering. FreeType implements a
different set of font-rendering algorithms that also perform antialiasing,
hinting and subpixel rendering.

The goal of these algorithms is to improve the appearance of text on the
screen. Since the algorithms are different, FreeType output does not exactly
match ClearType (some, including me, argue that FreeType provides superior
rendering to ClearType).

On modern Linux distributions, the user can select exactly which algorithms
FreeType will use. None of these algorithms match ClearType exactly and some of
these may be patent-encumbered.

The problem here is that Wine *overrides* the user settings when rendering text
and forces either monochrome or grayscale rendering. The point of this bug is
to fix Wine so that it renders according to user settings. I have tried to
create a patch for this, but failed (it seems that there is code which expects
glyphs to be 1- or 8bit pixmaps and cannot cope with 24bpp).

Please note that this fix will not encumber Wine with potentially patented
code. This code is contained inside FreeType and has to be explicitly enabled
by the user (or the Linux distribution). It will merely allow Wine to follow
the rest of the user desktop.


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