[ft] sub-glyph graphics-state question

[Dakai Liu]

Please excuse me for the double post. I forgot to type in the subject.


Hi FreeType team,

I have a newbie question regarding TT bytecode in general. currently I am using 
freetype 2.1.4 and monochrome output setting and auto hinting on.
I encountered a bug rendering a font called SimBraille. This font contains 
sub-glyphs, and the true glyph is assembled by selecting those sub glyphs.
The problem is in each and every of the sub-glyph, the flip switch is turned 
off at some point, and the flip flag stayed in graphics state for all the 
subsequent
sub-glyph rendering, which results in incorrect hinting. the flip switch is 
turned on in the beginning of "prep" code. So my question is, should I restore
this flag before each of the sub-glyph being interpreted?

I think this bug is fixed by later versions of freetype library, however, 
unfortunately I am allowed to port the later version into our product due to 
management
decision.


Thanks in advance,


Sincerely yours,

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