Re: QuickDraw LockPixels on Mac OS X (was: Saving a series of BitmapReps as Quicktime)
Re: QuickDraw LockPixels on Mac OS X (was: Saving a series of BitmapReps as Quicktime)
- Subject: Re: QuickDraw LockPixels on Mac OS X (was: Saving a series of BitmapReps as Quicktime)
- From: Alex Curylo <email@hidden>
- Date: Tue, 18 Sep 2001 07:08:19 -0700
>
> LockPixels(gworldPixMap); //does this matter in OS X? prevents
>
> pixels from moving around in memory
>
>
This is a very good question. I am writing on Mac OS X with Cocoa and
>
need to create an offscreen GWorld as a destination for a VDIG. Do I
>
still need to care about memory being moved around by the Memory
>
Manager?
GWorlds may be cached in graphic card memory, so it strikes me that locking
them is probably still a prudent practice, at least unless you create it
with the 'keepLocal' flag.
>
I was not able to find any documentation on this topic
I haven't seen any either and I generally do a fairly good job of keeping
abreast of QuickTime developments.
--
Alex Curylo -- email@hidden --
http://alexc.webjump.com/
"You have *incredible* charisma."
-- a charmed constituent, Acadia All-Candidates Meeting