[ft] lsb/rsb_delta and vertical text (again)

[Brady Duga]

Hello again!

I am still trying to work out some issues with glyph spacing and  
vertical fonts. I have implemented the lsb/rsb_deltas for horizontal  
text and that seems to be working fine. The issue I am now having is  
with some Japanese fonts that are intended to be drawn vertically  
with very little space between the glyphs. Essentially, the spacing  
is really bad :( In some cases glyphs actually touch each other.  
However, if I render with FT_LOAD_NO_HINTING then the spacing is  
fine. I have some sample images here: http://www.ljug.com/ 
vertsamples.html

Specifically, note the text in red boxes for both the hinted and  
unhinted versions. Since the hinting seems to matter, I was wondering  
if this is just another case of rounding during auto-hinting causing  
problems and if it can be solved with something analogous to lsb/ 
rsb_delta corrections. I made a feeble attempt to add tsb/bsb_delta  
values to my local copy of FreeType, but it didn't seem to make a  
difference. Of course, it is extremely likely I simply failed to  
implement it properly. Does anyone have any ideas on how to fix the  
spacing? Am I correct about the auto-hinting, or way off the mark? Is  
this even the right mailing list to send this to? Help!

--Brady "No Space" Duga