RFS: 0ad

[Philip Taylor]

On Sat, Apr 9, 2011 at 11:31 AM, Adam Borowski <kilobyte at angband.pl> wrote:
> On Fri, Apr 08, 2011 at 06:22:23PM +0100, Philip Taylor wrote:
>> On Thu, Apr 7, 2011 at 5:35 PM, Adam Borowski <kilobyte at angband.pl> wrote:
>> > On Thu, Apr 07, 2011 at 04:33:47PM +0100, Philip Taylor wrote:
>> >> On Wed, Apr 6, 2011 at 1:24 AM, Paul Wise <pabs at debian.org> wrote:
>> >> > Preferably you would render text at run-time, since that
>> >> > enables i18n. For finding font files use fontconfig (preferred) and or
>> >> > a build-time parameter for finding them.
>> >>
>> >> My main concern is that that wouldn't provide sufficient consistency -
>> >> different versions of Freetype, or the same version with different
>> >> configuration (bytecode interpreter, autohinter, etc), might render
>> >> the same font quite differently and break the look of the game.
>> >
>> > Why won't you force the settings then?  If you are afraid the user's
>> > configuration might be ill-fitting, specify them by hand.
>>
>> The important ones that I'm aware of are compile-time settings
>> (TT_CONFIG_OPTION_BYTECODE_INTERPRETER/TT_CONFIG_OPTION_UNPATENTED_HINTING)
>
> These two are used only if you choose bytecode hinting.  Just specify any
> other option if you're afraid of inconsistency.

I played with this a bit, and it looks like the bytecode interpreter
is necessary for some of the fonts we use.

http://zaynar.co.uk/0ad-pub/fonts/fonts-default-hint.png - the normal
rendering (using default font options in Cairo, which handles
antialiasing etc automatically).
http://zaynar.co.uk/0ad-pub/fonts/fonts-no-hint.png - FT_LOAD_NO_HINTING.
http://zaynar.co.uk/0ad-pub/fonts/fonts-auto-hint.png -
FT_LOAD_FORCE_AUTOHINT (or a version of Freetype with the patented
code disabled).

The autohinter makes everything much uglier. The main font (Pagella)
doesn't use hinting - with FT_LOAD_NO_HINTING enabled it's actually
the same when using the game's converted .ttf or the original .otf, so
I think I can remove the converted .ttf files entirely and use the
NO_HINTING flag when rendering it. But the DejaVu Sans Mono in the
top-left corner looks like it really needs the original bytecode
hinting, to avoid being ugly or blurry.

-- 
Philip Taylor
excors at gmail.com