Hi Robert,
Please file a Jira issue with a simple test case. Arcs are handled as a
generalized shape rather than via a predetermined shader, but it
shouldn't be that slow. Something else may be going on.
Another test might be to replace the arcs with rectangles or ellipses
and see if the performance changes...
...jim
On 3/27/15 1:52 PM, Robert Krüger wrote:
Hi,
I have a super-simple animation implemented using AnimationTimer and Canvas
where the canvas just performs a few draw operations, i.e. fills the screen
with a color and then draws and fills 2-3 circles and I have already
observed that each drawing operation I add, results in significant CPU load
(e.g. when I draw < 10 arcs in addition to the circles, the CPU load goes
up to 30-40% on a Mac Book Pro for a Canvas size of 600x600(!).
Now I tested the animation in full screen mode (only with a few circles)
and playback is unusable for a serious application (very choppy). Is 2D
canvas performance known to be very bad on Mac or am I doing something
wrong? Are there workarounds for this?
Thanks,
Robert
