Re: The current state of rendering and overlap

 This is the same as the winding rule concept (overlap once = wounded twice) ... I seem to remember one of them is even-odd and the other is non-zero, and quite fundamental difference between truetype and cff. 
    On Tuesday, 19 December 2023 at 13:54:21 GMT, Alexei Podtelezhnikov <[email protected]> wrote:  
 
 


It's easy enough to add FT_OUTLINE_OVERLAP to any glyph loaded from a


CFF2 font. Whether that makes sense is one thing I'd like advice about.


There's currently no such code.


I would suggest that CFF2 invent a special charstring to mark overlaps
with FT_OUTLINE_OVERLAP only when necessary. Let us know to implement
it in FreeType.


https://www.w3.org/TR/WOFF2/#p1

WOFF2 is moving towards accepting explicit overlap flags. Perhaps CFF2 can spare  a reserved operator or a two-byte operator.