For chinese font,the bitmap_index struct variable(20bit) too small

Bug (archived)
1

taday,I want to add chinese font,the unicode range is 0x4E00~0x9FA5.font pix = 20,Bpp = 4.then the bitmap_indexoverflow.
can I modify the bitmap_indexbit field size?

2

Enable LV_FONT_FMT_TXT_LARGE in lv_conf.h.