I thought I was going nuts. Why was my transparency map giving the opposite of what I expected? 

 

1 * 1 = 1... right?  And 0 * 1 = 0... innit?

 

Well, apparently not. The transparency channels on the PoserSurface have no regard for Proper 'Rithmetic.

If I turn the Transparency value to 1, the surface is transparent. Exactly what I would expect.

 

But if I now plug in a black and white transparency map, the BLACK (value zero) areas of the map are set to transparency = 1 (transparent), and the WHITE (value = 1) areas of the map are set to transparency = 0 (opaque).

 

So now, at my age, I have to learn some new arithmetic:-  1 * 1 = 0.  And 0 * 1 = 1.

 

I'm sure everybody realised this long ago except me. Is there anyone else whose sense of decency is offended by this really bad behaviour?

 

Izi

 

PS: Taking tongue out of cheek, I suppose the transparency map is inverted (1 - t) before being multiplied by the transparency value.  They might have told me that.  :O)

"If I were a shadow, I know I wouldn't like to be half of what I should be."
Mr Otsuka, the old black tomcat in Kafka on the Shore (Haruki Murakami)