pub unsafe extern "C" fn cairo_user_font_face_set_render_glyph_func(
font_face: *mut cairo_font_face_t,
render_glyph_func: cairo_user_scaled_font_render_glyph_func_t,
)
pub unsafe extern "C" fn cairo_user_font_face_set_render_glyph_func(
font_face: *mut cairo_font_face_t,
render_glyph_func: cairo_user_scaled_font_render_glyph_func_t,
)