Troy, thanks for the thought. I've given it a try and I'm still getting
the same problem.

It definitely alters behaviour when the refresh rate is changed. At
higher rates 75-85hz The tearing is more frequent but each tear is less
severe whereas as 60hz the tearing is infrequent but when it does happen
it really happens in a big way

It looks like I'm going to have to severely limit the speed of movement
in order maintain a fluid feel, unless anyone has any other ideas.

Tony Wilson


-----Original Message-----
From: [EMAIL PROTECTED]
[mailto:[EMAIL PROTECTED] On Behalf Of Troy Rollins
Sent: 08 January 2004 18:00
To: [EMAIL PROTECTED]
Subject: Re: <lingo-l> Scrolling without tears


On Thursday, January 8, 2004, at 12:20 PM, Tony Wilson wrote:

> The problem I have is that the images appear to tear when they are 
> moved
> at anything other than the slowest speed of 1 pixel per frame. Is
there
> any way to stop this tearing effect?

You may find that the best results could be achieved by off-loading the 
graphics work to openGL. Consider using SW3D for this - even though it 
is a 2D effect.

Just a thought.

To be honest, I was kind of hoping that DMX2004 would allow the use of 
openGL for "2D" image layers without using the 3D API, but that is one 
for Mr. Higgins.  ;-)
--
Troy
RPSystems, Ltd.
http://www.rpsystems.net

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