Re: [ft-devel] severe problems with subpixel hinting

[Infinality]

> > Ok, after more experimentation, it *does* detect and store
> > compatibility_mode correctly when I store it in the TT_Face
> > object. I am running into an odd issue with Firefox and TNR however.
> > For some reason, the patterns are not detected with Times New Roman
> > Regular.  And I know that Ins_FDEF is being executed because I used
> > debug messages.  Perhaps I'll have to be even more verbose with the
> > messages.  I have not seen this problem with any other face I've
> > tested, and it only happens in firefox.  Any ideas what might cause
> > that?  Is it possible that firefox is doing something incorrectly?
> Maybe FontConfig has set up Times New Roman on your box to use
> auto-hinting?  A bug in Firefox is also possible, of course...
>
>
>      Werner

(oops, forgot to CC the list)

I'm definitely not using autohinting on TNR;  I know it's using TT. I've 
verified with debug messages that for TNR Regular, subpixel hinting and 
ignore_x_mode are successfully being set TRUE in tt_loader_init().  
However, the execution context in ttinterp.c has them set to FALSE at 
the beginning of TT_RunIns().  I'm wondering if in some cases the 
execution context is being *reused* in Firefox without calling 
tt_loader_init().  That could also explain the weird graphic glitches 
that only happen in TNR Regular.  Does that sound plausible?  Guess I'll 
have to dig into Firefox code.