2010/1/27 Mario Zechner <[email protected]>
> @Ralf
> that is very strange behaviour i wouldn't expect from a Nexus One. I
> have to admit that i only own a Droid so i can't confirm it for the
> N1. Would you mind putting an apk with your test application up
> somewhere, for example at http://www.file-pasta.com, and add log cat
> output so we can observe the behaviour of your app on our devices?
> Additionally, if it's not to much of a hazzle you could also share the
> source code so we can have a look at it.
>
Sorry, unfortunately I can not upload a test app at this point.
I just checked it again:
- The 60 FPS I reported for 3 textured full screen quads was to high. It
is more around 40 FPS (if not touching the screen).
It goes down to 35 FPS as long as I touch the screen.
- The 60 FPS I reported was from a simple colored triangle. During
touching the screen it is ca. 48 FPS.
Sorry, for the wrong numbers in my previous post.
There is a very simple test you can perform by yourself:
- On every frame [*public void onDrawFrame(GL10 gl) *] just do a glClear
like:
*gl.glClear(GL10.GL_COLOR_BUFFER_BIT | GL10.GL_DEPTH_BUFFER_BIT);*
- Measure FPS
- Touch the screen
- Measure FPS
This simple test on the N1 shows a frame rate drop while touching the
screen:
01-27 16:01:20.920: DEBUG/GGTest(21690): FPS: 60.92
01-27 16:01:21.920: DEBUG/GGTest(21690): FPS: 60.73
01-27 16:01:22.921: DEBUG/GGTest(21690): FPS: 60.83
01-27 16:01:23.930: DEBUG/GGTest(21690): FPS: 60.65
01-27 16:01:24.951: DEBUG/GGTest(21690): FPS: 43.25 # Touch Screen
01-27 16:01:25.960: DEBUG/GGTest(21690): FPS: 48.48
01-27 16:01:26.960: DEBUG/GGTest(21690): FPS: 53.60
01-27 16:01:27.980: DEBUG/GGTest(21690): FPS: 49.22
01-27 16:01:28.980: DEBUG/GGTest(21690): FPS: 46.83
01-27 16:01:29.991: DEBUG/GGTest(21690): FPS: 44.65
01-27 16:01:30.991: DEBUG/GGTest(21690): FPS: 52.82
01-27 16:01:32.000: DEBUG/GGTest(21690): FPS: 60.89 # Release Finger
01-27 16:01:33.000: DEBUG/GGTest(21690): FPS: 60.64
01-27 16:01:34.010: DEBUG/GGTest(21690): FPS: 60.71
01-27 16:01:35.011: DEBUG/GGTest(21690): FPS: 60.70
01-27 16:01:36.020: DEBUG/GGTest(21690): FPS: 60.73
..Btw: I tried a:
event.recycle();
try {
Thread.sleep(18);
} catch (InterruptedException e) {
}
... this helps nothing on the N1. So, (in this case) the problem might not
be a garbage collection issue. May be the the whole input flow is just to
bloated with to many abstraction layers.
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