[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: Pre-multiplied alpha
|
From: |
Uli Kusterer |
|
Subject: |
Re: Pre-multiplied alpha |
|
Date: |
Fri, 12 Dec 2003 03:19:51 +0100 |
|
User-agent: |
MT-NewsWatcher/3.3b1 (PPC Mac OS X) |
In article <mailman.1610.1071192258.399.discuss-gnustep@gnu.org>,
Alexander Malmberg <alexander@malmberg.org> wrote:
> Does the image data stored in an NSBitmapImageRep have premultiplied
> alpha (aka associated alpha) or not (aka unassociated alpha)? The image
> data passed to NSDrawBitmap?
Newbie alert: I read somewhere in Apple's Cocoa docs that they're using
premultiplied alpha. But whether that's in the file, inside
NSBitmapImageRep or in a box near the door ... ?
No idea.
You might find some info in one of the following places:
a) Apple's Cocoa docs, available on their web site
b) the cocoadev.com Wiki
HTH,
-- M. Uli Kusterer
http://www.zathras.de
- Re: Pre-multiplied alpha, (continued)
- Re: Pre-multiplied alpha,
Uli Kusterer <=
- Re: Pre-multiplied alpha, S.J.Chun, 2003/12/13