Message-ID: <005901bdb4e5$b96730a0$904d08c3@arthur>
Reply-To: "Arthur" <arfa AT clara DOT net>
From: "Arthur" <arfa AT clara DOT net>
To: "DJGPP Mailing List" <djgpp AT delorie DOT com>
Subject: Re: Allegro demo ship flickers
Date: Tue, 21 Jul 1998 21:13:52 +0100
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>When I run the allegro demo game, choosing autodetect 640x480, the ship
>flickers. I don't know if this is the right word for it. I can see 2 ships
>on top of each other slightly apart, it seems as if I am seeing the last
>position of the sprite. This happens when I hold down the left or right
>arrow keys to move the ship.


Try using the other drivers, such as VESA 1.x, or VESA 2.0.

>I've been trying to write a little space invaders type game using page
>flipping, I only have a little blue rectangle sprite for the ship, and have
>managed to make it shoot. However it is very flickery or whatever you want
>to call it, the bullet is very smooth. But moving the ship, causes this
>jerky, ghosting effect.


Assuming that you are using page flipping correctly, the problem lies with
your graphics card or graphics drivers. Make sure you have the latest
drivers!

James Arthur
jaa AT arfa DOT clara DOT net