Message-ID:	<001301bdf988$06639560$b36f19c4@default>
From:	rylan AT intekom DOT co DOT za (StefanViljoen,6599)
To:	"Jameson" <kids AT i-55 DOT com>
Cc:	<djgpp AT delorie DOT com>
Subject:	Re: Bad Flicker
Date:	Fri, 16 Oct 1998 08:17:33 +0200
MIME-Version:	1.0
X-Priority:	3
X-MSMail-Priority:	Normal
X-Mailer:	Microsoft Outlook Express 4.72.2106.4
X-MimeOLE:	Produced By Microsoft MimeOLE V4.72.2106.4
Reply-To:	djgpp AT delorie DOT com

-----Original Message-----
From: Jameson <kids AT i-55 DOT com>
Newsgroups: comp.os.msdos.djgpp
Date: Friday, October 16, 1998 1:49 AM
Subject: Bad Flicker


>I am trying to make a program that utilises allegro's GFX abilities,but I
>have a terrible flicker because I make the program clear the screen every
>frame.Does anyone know how to prevent this??Or even another way to do it??


There is a technique you can use that is called double buffering. What this
implies is to do the clear screen you refer to above to a hidden Allegro
bitmap, not the screen. All that you do this is repeatedly copy this hidden
buffer to the screen bitmap. This is quite a fast, efficient technique and
holds flicker down to a minimum, if any flicker at all.

Mail me if you want code.

- Raw text -