isn't AA the blending and/or blurring of two colors along a sharp line? 
unless it's possible to restrict AA to inside an object, making the
model color semi-transparent along the AA area, i don't see how this
could be done.

Edmund Horner wrote:
> 
> Hello all.
> 
> Lately I've been planning to raytrace a whole lot of graphics for a game I'm
> making...  Antialiased pictures would be nicer, of course, but that leaves
> the issue of which background colour to use for the rendering.
> 
> I think it would be nice to have an AA mode that does _NOT_ affect pixels
> that touch the background, thus making AA pictures work fine with all colour
> backgrounds.
> 
> I hope the above makes some sense!
> 
> I'm not sure whether this would mean a new AA mode (e.g. +AM3), or what, but
> it would be very nice!
> 
> Thanks,
> Edmund.

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