> If variable font is set using FT_Set_Var_Design_Coordinates(ftFace, > ... ) or FT_Set_Named_Instance(ftFace, ...) and then call to > FT_Load_Sfnt_Table(ftFace,...) is made, does it return table data > specific to variation set on ftFace or whole data of variable font ?
No, as Lawrence answered. What you ask for smells like the wish to use FreeType for manipulating fonts. FreeType is *not* suited to that! Its job is to render glyphs, nothing more. What you probably need is a program to create font instances, for example, https://fonttools.readthedocs.io/en/latest/varLib/mutator.html. AFAIK, the Cairo library does that automatically while generating PDFs. Werner
