3 ms·

> That’s why they’ve excelled in font rendering Not sure about the past, but without subpixel antialiasing they pretty much have the worst font rendering now.

• owlboy 5y ago
  Can you elaborate?
  • spicybright 5y ago
    Right? All it's missing is a Posted from my iPhone footer
  • rand_r 5y ago
    Basically, they assume you’re using a retina quality (aka HiDPI) display where each virtual or abstract pixel maps to four physical pixels in the display. For example, you have a 27” 4K display, but set the resolution to 1920x1080 in System Preferences. Mapping each virtual pixel to four physical pixels lets you render curves really crisply. However, on non-HiDPI where you don’t have pixel doubling, you have to use sub-pixel rendering to approximate curves. One technique is playing with slightly shading adjacent pixels so that at a distance curves appear to be smoothed out. But for some technical reasons, Apple dropped support for sub-pixel rendering. It was too hard to do and the future is HiDPI anyway.
• matwood 5y ago
  Doesn’t this only cause issues on non-HiDPI screens.