[RESOLVED] Which is faster copyPixel() or scrollRect()?

[DevilMayCry]

Is it better/faster/smoother to use copyPixel() of scrollRect for fast animations?

Is there some way to time those methods beside FPS?
Is there some better way for fast and smooth scroling large bitmaps?

And one more question, does Flash 9 has something like vertical sync, to wait for monitor refresh and than to draw picture?

[DevilMayCry]

Here are some measures I did:

stage.frameRate = 1000;

Debug Flash:

160 fps scrollRect! very stable +-10
110-227 fps bmp.x
100 fps copyPixel


FireFox from html:

252 fps scrollRect
161 fps copyPixels
155-208 bmp.x,y

It's very important to limit copyPixel i scrollRect if moveRect_XY = 0
AND stage fps > 100


I am still searching answers for my last two questions:

-Is there some better way for fast and smooth scroling large bitmaps?

-Is there something like vertical sync(), to wait for monitor refresh and than to redraw picture?

[lesli_felix]

There is no vertical sync. I remember reading in tinic uro's blog that they were experimenting with vsync in the fullscreen mode of the flash9 player, but I've not seen that in action.

Also, there may well be vsync with the hardware accelerated mode in the flash10 player, but that's speculation, it would seem logical though.

Copypixels so far seems to be the smoothest I've used for scrolling, but I haven't played around with scrollrect. I don't think there's much difference in the output though.

Your numbers look like scrollrect might be faster - Might have to give that a go.

[DevilMayCry]

VENGEANCE MX said that "scrollRect is fast, VERY fast"
But I didn't have numbers to compare. Smoothness is the same At least for what my eyes can see
Good for small moveX,Y; bad for larger values.

I would be twice better if there was vertical sync();

I am scrolling with scrollRect = rect;
Less CPU intensive and gives Flash more free time between frames.

All questions have been answered. Though not in a way I was hoping.
Waiting for Flash 10 we are - said master Yoda