Re: Clipping Issue

[Craig Macomber <FishyRB at 98115 dot net>]

> This doesn't look like z fighting, but rather an artifact of Quesa's
> per-triangle sort. The shot in the lower left kinda gives this away,
> and the fact that it goes away when you turn off the tunnel's alpha
> confirms it. The clipping is simply caused by a big triangle (part of
> the tunnel) drawing on top of everything else, because it has been
> determined to be "in front" - sorting big triangles is tricky, and
> Quesa doesn't accept sorting hints so you're stuck with whatever it
> gives you.
>
> > The tunnel seems to be the cause. When even one of the objects
> > passes over one of the edges between the triangles it has the
> > problem. If I turn the Alpha mask off on the tunnel the problem is
> > fixed, but I don't want to do that.
> If you can get away with using a 1 bit alpha test on the tunnel
> instead of a full alpha blend that should "fix" the problem at the
> cost of image quality. Other than that there's not much that can be
> done short of hacking Quesa.
>
> Frank.
> <http://developer.chaoticbox.com/>
> <http://macgameblog.com/>
I changed the mask using RB3D utility. I actually lost no quality 
because the mask was just black and white. (Well maybe a little was 
lost in the rest of the texture but not much). It solved the problem. 
Thanks a lot!
You have been very helpful!

Craig

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