> After failing to figure out run a debug build of FreeType and get > the output, I started just investigating with print statements.
Sorry, I should have pointed to https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/docs/DEBUG how to activate debugging messages. > I found that the error is coming from > https://gitlab.freedesktop.org/freetype/freetype/-/blob/master/src/sfnt/ttsbit.c?ref_type=heads#L1555 > - the ‘graphicType’ tag that is unsupported is ‘flip’. This makes > sense for 'woman in a manual wheelchair facing right’. Thanks for the analysis. The good news is that PNG support in 'sbix' should be fully supported, so supporting this feature would be nice. The bad news is that a 'flip' tag is neither documented in Microsoft's OpenType nor in Apple's TrueType specification... I now see that the fonttools package supports it: https://github.com/fonttools/fonttools/pull/3433 and it seems that you came to the same conclusion as me, based on your comments there :-) > So this is indeed a feature that FreeType doesn’t support. I gather > from your response that this is not at all a priority. Correct, but... > Alternatively, if I felt inspired, and somehow figured this out, > would it be worthwhile for me to create a merge request? ... this would be very welcomed, given that flipping a bitmap horizontally is not a big deal and should only require a few lines of code, I reckon. > create an issue this over at > https://gitlab.freedesktop.org/freetype/freetype, Yes, please do. Werner
