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- Path: sparky!uunet!spool.mu.edu!darwin.sura.net!ukma!cs.widener.edu!dsinc!bagate!cbmvax!peter
- From: peter@cbmvax.commodore.com (Peter Cherna)
- Newsgroups: comp.sys.amiga.programmer
- Subject: Re: Programming an Overscan screen under 2.04
- Message-ID: <37150@cbmvax.commodore.com>
- Date: 19 Nov 92 14:51:37 GMT
- References: <9755@blue.cis.pitt.edu.UUCP>
- Reply-To: peter@cbmvax.commodore.com (Peter Cherna)
- Organization: Commodore-Amiga, Inc. West Chester, PA.
- Lines: 29
-
- In article <9755@blue.cis.pitt.edu.UUCP> amigaman+@pitt.edu (Russell A Howard) writes:
- >
- > I'm tcurrently working on a project and want to use a 640 X 480
- >overscan screen. If I open a 640 X 480 screen with OpenScreenTags and
- >specify "SA_Overscan" to be STANDARD it opens the screen ok.
-
- "Standard" overscan is not guaranteed to necessarily be 480 lines tall on
- all Amigas. It's a user-preference which the user might not choose to
- set that big.
-
- >640 X 480 window. I then bli a bitmap onto the window which is 640 X 400.
- >This is where the problem occurs... The image is only 640X400, so the bottom
- >of the window should be clear, but it's not. The image that I blit into the
- >upper part of the screen appears again right after the correct image except
- >the colors for the image are wrong.
-
- You must be doing something incorrectly. Is the screen a CUSTOMBITMAP
- screen, or do you let Intuition allocate the screen's bitmap. Are you
- using the correct blit size (400 lines)?
-
- >Russ Howard
-
- Peter
- --
- Peter Cherna, User Interface Development Group, Commodore-Amiga, Inc.
- {uunet|rutgers}!cbmvax!peter peter@cbmvax.commodore.com
- My opinions do not necessarily represent the opinions of my employer.
- "I believe it's bad luck to be superstitious."
-
-