Comment 28 for bug 80921

> Also, I've noticed that in poppler/CairoFontEngine.cc, the load of fonts is
> forced with FT_LOAD_NO_HINTING, I wonder if it's a good idea. There is no
> comment explaining why this is so...

I would guess this is because it is important for a PDF viewer to give an accurate reproduction of a printed page, and the purpose of hinting is to sacrifice accurate metrics and color for increased contrast.

Since the legacy LCD filter (FC_LCD_LEGACY / FT_LCD_FILTER_LEGACY / CAIRO_LCD_FILTER_DEFAULT(!)) adds bad color fringing to unhinted text, it might be a good idea to also ensure that the LCD filter is FC_LCD_DEFAULT or FC_LCD_LIGHT.