AnimationTimer and actual frame rate
Michael Paus
mp at jugs.org
Thu Dec 22 16:28:57 UTC 2016
Hi all,
for quite a while now I am observing a strange behavior when running some
JavaFX graphics tests. The scenario is very simple. I am running some
animation
which puts some load onto the graphics engine and I am trying to measure the
frame rate via an instance of an AnimationTimer. When I increase the
load high
enough I reach a point where the indicated frame rate is just 60FPS or
even a bit
lower but the observed frame rate on screen has already dropped to something
like 1-2 FPS. So what I observe is that the AnimationTimer is running
much faster
than the updates of the graphics. How can that be? Does anybody have an
explanation
under which circumstances this can happen? Or is this behavior a bug
which I should report?
Just some puzzle for the boring Christmas holidays :-)
Merry Christmas to all of you
Michael
PS: My system is a MacBook Pro with NVidia graphic card.
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