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Title
m
Mehdi Haghgoo
06/12/2022, 6:19 AMIs it guaranteed that every frame takes 16 ms in Android?
🇳🇴 2
r
romainguy
06/12/2022, 7:30 AMThe refresh rate depends on the display. Newer displays have high refresh rates and even variable refresh rates.
❤️ 1
Of course it also depends on what you mean exactly, on a 60Hz display a new vsync fires every 16.6ms, but the all may take more time and miss a frame
❤️ 1
Also things are made a bit more complicated by the fact android gives apps a longer window by firing vsync ahead of time
❤️ 1
Tl;dr don’t assume 16ms and if you need to sync with the display, use the Choreographer API
❤️ 1
m
Mehdi Haghgoo
06/12/2022, 7:36 AMThere is test snippet on Android CS, Compose section:
// Forward the clock by 2 frames: 1 for toggle and then 1 for count
composeTestRule.mainClock.advanceTimeBy(32)r
romainguy
06/12/2022, 7:47 AMNo it's not an issue in this case
❤️ 1
Tests are setup with a special monotic test clock that guarantees a frame delay of 16ms
❤️ 1