Home/ Questions/Q 805291
In Process

The Archive Base Latest Questions

Editorial Team
  • 0
Asked: 2026-05-15T00:03:39+00:00

I am trying out the (latest) Android SDK, and noticed some strange behavior. I’ve

  • 0

I am trying out the (latest) Android SDK, and noticed some strange behavior.

I’ve written a skeletal SurfaceView app: Activity, SurfaceView and a rendering thread. It doesn’t actually do any painting, and only writes out the framerate to logcat once a second. When it runs in portrait mode, I get around 60 fps. However, when I flip it to landscape the framerate drops to about 30 fps.

I have also tested it on the LunarLender sample, and got similiar results. All of the testing are done on the emulator, since I don’t have a physical device.

What’s it all about? I can’t seem to find any mentioning to this on Google, have anyone else experienced that? Is it just an emulator quirk or does it apply to physical hardware too?

Share

Leave an answer

You must login to add an answer.

Need An Account,

1 Answer

  1. Editorial Team

    Guessing here- in landscape mode, is there extra “blank” space on either side of the rendered content? If so there could be an effective increase in the amount of processing just to paint the screen. Don’t know if that should account for a 50% decrease in framerate, but it’s possible.

    Another guess- landscape mode may be deliberately throttled because it’s intended primarily for video viewing. No reason to go up to 60fps for 30fps content. Configuration?

    • 0