Thanks all of you for your help, so far so good.
My font rendering with stb is close to be completed, but am really stuck trying to display some unicode characters (小耳木兎).
Regardless the font type (liberation mono, arial or times new roman), all I get are those invalid glyphs.
Is there anything in particular I need to be aware or configure when using a unicode in the range of Chinese o Japanese glyphs?
P.S. is it only me or the img tag seems broken, it only displays an icon but I see no image