IssueTracker

Running a swappy-enabled app on my Pixel 6 (Android 13).

dependencies {
   // ...
   api 'androidx.games:games-frame-pacing:2.0.0'
}

With Smooth Display enabled, you get the following refresh rates (after conversion to Hz) when calling SwappyGL_getSupportedRefreshPeriodsNS():

90, 60

However, Android also supports any refresh rate which is a divisor of these rates. E.g.:

 90, 60 --->  90, 60, 45, 30, 20, 18, 15, ..., 1
120, 60 ---> 120, 60, 40, 30, 24, 20, 18, ..., 1

Shouldn't this API return all these rates? Or at least all the reasonable rates >= 30 Hz?

Impact

When choosing a refresh rate, it is important to sync the game clock with the actual refresh rate. To pick a valid rate, we first need to query available rates. Now there is no easy way to select e.g. 45 Hz. Hence this bug report.

Are we expected to implement the divisor algorithm ourselves? See explanation here.