Google apparently won’t let Google Maps, Pokemon Go, Waze, and WeChat use the Pixel 4’s “Smooth Display” function to run at 90Hz, in keeping with an specific blacklist that XDA Developers’ Mishaal Rahman and 9to5Google present in obvious supply code for the Pixel 4 and Pixel Four XL.
We haven’t but been in a position to take a look at ourselves if these apps are unable to run at 90Hz, however Android Police confirmed that Google Maps and Waze solely ran at 60Hz on its Pixel 4.
For Google Maps, Pokémon Go, and Waze, it’s not too shocking that Google could have locked them to a extra normal 60Hz. All of these apps are already large battery drainers, since they concurrently use your cellphone’s GPS, mobile radio, GPU, and hold the display on for lengthy durations of time. Running at 90Hz would, in concept, suck up battery even quicker. (And Niantic apparently capped Pokémon Go at 30 fps earlier this 12 months, anyway.)
It doesn’t make as a lot sense why WeChat won’t be allowed to run at 90Hz, however Google’s supply code for the Pixel Four apparently says that the app has “poor performance” on the greater refresh price.
Smooth Display hasn’t gone over as easily as Google could have hoped. Earlier this week, some Redditors found out that the Pixel 4’s refresh price falls to 60Hz if its display is at 75 % brightness or decrease. Google advised us that upcoming software program updates will allow 90Hz “in more brightness conditions,” so sooner or later, you may be capable of use Smooth Display when the display isn’t as brilliant.
We could now know why Google disabled 90Hz at decrease brightness, by the best way: commits present in Android 10’s supply code by XDA Developers say it’s since you would have seen the display flicker because the refresh price modifications. Here’s a extra technical clarification from one of many commits:
The show makes use of completely different gamma curves for various refresh charges. It’s onerous for panel vendor to tune the curves to have very same brightness for various refresh price. So flicker might be noticed at swap time. The difficulty is worse on the gamma decrease finish. In addition, human eyes are extra delicate to the glint at darker surroundings. To forestall flicker, we solely help greater refresh charges if the show brightness is above a threshold. And the darker surroundings might have greater threshold.
Let’s hope that Google follows by with its software program updates and finds a technique to let you use Smooth Display at decrease brightness ranges — and, perhaps sometime, let the apps which can be apparently locked at 60Hz take full benefit of the 90Hz display in a battery-friendly approach.