Very cool. This could be useful for some applications, but I don't see it becoming a thing for general use cases unless it's implemented and exposed directly by

Very cool. This could be useful for some applications, but I don't see it becoming a thing for general use cases unless it's implemented and exposed directly by the browsers. Even then, the main problem is that the internet is still mostly text, and if you can't implement or access font hinting, your text will be blurry and ugly on any display that isn't ultra-high DPI. You can't really render text to a texture and then manipulate that texture with sub-pixel precision. It must be done the other way around: text rendering must be done last, and with the help of a hinting library so it will look sharp and readable.