Re: [ft] Modifying/Enhancing the Truetype Interpreter

[Werner LEMBERG]

>> Nice!  Please don't forget to document, probably with screenshots,
>> which code changes cause which improvements, and which cause
>> degradations.
>
> I will take screenshots as well as comment (at least temporarily)
> the code in the patch.  I feel kind of embarrassed posting these
> "hacky" patches of ttinterp.c, but I'm sure it can be refined once
> all important parts are identified.  ;)

I'm very grateful that you take some time to play with these things...

>> It might be useful also to emulate ClearType `better',
>> this is, to use a larger factor for increasing the horizontal
>> resolution.
>
> This is a part I was wondering about.  I understand that CT splits a
> pixel into 16 horizontal chunks and stuff like RTDG[], RDTG[],
> MDAP[R], MIAP[R], etc., all use that grid.  However, let's say we
> want to increase the horizontal resolution to 32, or 64, or 256...
> or infinity?  Wouldn't increasing the horizontal resolution to
> infinity simply mean /ignoring/ these instructions horizontally?

Good question.  I'll ask it on the OpenType mailing list.


    Werner