Bill Pragnell wrote:
> There seems to be a consensus for making her transparent... this in
> fact was my original intention, but there were two problems. Firstly,
> other bits of her become visible, making her more confusing visually
> and swamping the background objects.

Maybe that could be avoided by using a bounded_by box for the ghost that is 
between the ghost and the camera, so that only rays coming directly from the 
camera can "see" her?

> Secondly, when transparent she
> exhibits severe media artifacts in the form of saturated pixels,
> which I have been unable to remove.

That's a tougher problem, but is it still apparent when high-quality 
antialiasing is used?

Rune
-- 
http://runevision.com

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