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- Newsgroups: rec.games.programmer
- Path: sparky!uunet!gatech!destroyer!cs.ubc.ca!uw-beaver!news.u.washington.edu!hardy.u.washington.edu!kludge
- From: kludge@hardy.u.washington.edu (Kludge)
- Subject: Re: xlib04 & scrolling
- Message-ID: <1992Dec24.010024.2497@u.washington.edu>
- Sender: news@u.washington.edu (USENET News System)
- Organization: University of Washington, Seattle
- References: <1h8k64INN271@ub.d.umn.edu>
- Date: Thu, 24 Dec 1992 01:00:24 GMT
- Lines: 17
-
- In article <1h8k64INN271@ub.d.umn.edu> cbusch@ub.d.umn.edu (Chris) writes:
- >
- > Is "real" scrolling available thru xlib04 graphics library. My
- >question boils down to this: is there 4 different VRAM move routines,
- >one for each direction? Instead of just a showpage(int) routine that
- >respositions the virtual screen.
- >
- >-cbusch@ub.d.umn.edu
-
-
- No - it's not necessary. There's a couple of routines that can do what
- you want: x_cp_vid_rect() and x_shift_rect(). Use the second one for
- scrolling, since it won't overwrite what it hasn't written yet.
- NOTE: It will *not* do smooth x-coord. scrolling - the x coordinates you
- give it are rounded to the nearest 4 pixels.
-
- --Kludge
-