I know that Flash has certain issues when objects are scaled past a size
somewhere in the 1000+ dimaensions.  It would probably be better to
split the images up into sizes less than 1000 pixels to be sure.

Lee



-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Peter
O'Brien
Sent: 21 April 2006 11:46
To: Flashcoders mailing list
Subject: Re: [Flashcoders] Single giant bitmap vs Multiple smaller
bitmaps -Performance Effects?

Hey list, hope all is well.  I have a question about performance,  
thats been asked before but I can't find receiving any answer.

Is it much more desirable to chop a massive bitmap up when scrolling  
it across the horizon?  In my specific case I have bitmaps of between  
4000px - 6000px in length which will also likely be scaled up, as  
this is for a mProjector app that will need to go full screen.

Will the effort to chop it up be rewarded by much better  
performance?  Will it be much less strenuous for the player? (FP8 in  
this case)

Thanks in advance if anyone has any insight


On 1 Nov 2005, at 19:46, Bill Brown wrote:

> Is there any rendering performance difference between using one  
> giant bitmap
> versus slicing up the bitmap into smaller bitmaps?
> I am creating a scrolling game for a kiosk, so memory usage is not  
> a big
> issue.
> Currently I am slicing up one long unique image (no patterns or  
> repetitive
> parts) into several smaller jpegs and loading them into movieclips  
> when they
> are required (scrolled into view). The movieclips are removed when  
> they are
> scrolled out of view. Three scrolling movieclips are required at  
> any one
> time. The problem with this method is that there is a stutter each  
> time a
> movieclip is loaded with a jpeg, or removed.
>
> I am considering using just one giant bitmap and scrolling it to  
> remove the
> stutter. Also I suspect scrolling only one movieclip will be less of a
> performance hit than scrolling three movieclips.
>
> Does anyone one if one method or the other is better? Is there any
> difference at all?
>
> Thanks

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