🚀 go-pugleaf

In article <Bsts4L.15r@news.cso.uiuc.edu> tmkk@uiuc.edu (Khan) writes:
>>But this is just a price to be paid for page flipping -- I don't see
>>how a split screen would eliminate this problem either.  If you make
>>the status display half of the split screen a static image (i.e., not
>>page flipped) then you've got a flicker problem.
>
>Flicker? Hmm... I wouldn't expect drawing to a static split screen
>"window" would exhibit any more flicker than drawing to a full screen in
>non-double-buffer mode. Why would there be a problem with flicker?

You're right, it wouldn't exhibit any more than drawing to a full
screen.  But it also wouldn't exhibit any less.  Hence: what's the
advantage?  You have to double buffer, whether you're using full-screen
mode or split screen mode.  So you're back to the same problem: you
must draw the status window stuff once for *each* page flip screen.

If, on the other hand, you don't get noticeable flicker without double
buffering on the PC, then there's no need to double buffer anything.
You could just use mode 13 (byte-per-pixel) and draw to the visible
(and only) page whenever you feel like it.

Dave Baggett
dmb@wam.umd.edu