I second JRG's option. I ran recently into a similar problem and using
image_pattern was the way to go. An added benefit was the possibility of
using JPEG instead of extremely large TGA or PNG.

G.

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news: 3be536c2@news.povray.org...
>
> "JRG" <jrg### [at] hotmailcom> wrote in message
> news:3be53443@news.povray.org...
> > Instead of using a color_map to define transparent and non-transparent
> areas
> > use a texture_map.
>
> I'm using an image map with the transparent areas defined by the alpha
> channal attached to the image map - so I can't really do this.
>
> Mick
>
>
>

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