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I though sub pixel rendering (or anti-aliasing) was not needed at all on modern HiDPI displays? Why do you need to anti-alias anything if you are already render
by ribit 5y ago
I though sub pixel rendering (or anti-aliasing) was not needed at all on modern HiDPI displays? Why do you need to anti-alias anything if you are already rendering glyphs with sub(logical)pixel precision anyway?
- thih9 5y agoI guess the point is not sub pixel rendering itself, but having text that is as smooth as possible. I’d ask: why not?
- Eric_WVGG 5y agoMy understanding is that on pre-retina displays, subpixel anti-aliasing was a fairly difficult, complex, and resource intensive technique that resulted in huge improvements in readability, and in the era of retina displays, it is a lot of complication that results in barely perceivable gains.
- ribit 5y agoWell, the point is that traditional display technology had limited spatial resolution, which is exactly why algorithms like subpixel rendering were created — to improve the visual fidelity of text on an imperfect screen. The algorithms themselves are not without drawbacks — sensitivity to background colors, implementation complexity, caching cost, scalability etc. If the spatial resolution of the display is high enough that the font looks smooth with "normal" rendering, why bother with complex workarounds?
- gwbas1c 5y agoDepends on screen size. FWIW: I can see aliasing on subtitles on my 70" 4k TV, sitting a few feet away. I have excellent eyes.
- ribit 5y agoA 4K 70" TV is hardly a HiDPI screen...