Drawing Stuff...

[smithdale87]

Hi,

I seem to have hit a sort of performance wall when drawing things with the iPhone. I have 3 Images which are being drawn. Each of those images is part of an image sequence so, everytime I redraw it gives an animation effect. What I can't figure out is why, even if I'm drawing at only 15-20 times / sec, the phone cannot keep up. All of the images have already been preloaded.

Keep in mind also, that redrawing the images is not the only thing I'm doing between updates. However, if I do not animate the images, just have a single static image that is redrawn each update, I don't seem to have much of a performance issue. However, when I start updating, a dramatic change occurs.
Why is this the case even if I've already the images?

[smithdale87]

I've been having major problems with drawing images after running my app on the iphone rather than the simulator.

I started logging the elapsed time it takes to re-draw my app ( its a game, so drawing is a major thing ), and I noticed something curious:

On average, it takes about 0.156s to do one redraw, but there were also many draws that were less than 0.02s ( thats right like 8-10x faster ) than average.

I'm not changing anything that I'm drawing, but for some reason, I get like 10 or so frames in a row where I get drawing times of 0.01-0.02s wherease all the reset are from 0.15 - 0.20 .

Any ideas?