On 9/13/19 4:17 PM, William wrote:
> Hello all,
> I am a newbie in POV-ray and I am trying to generate a image with transparent
> background.
> 
> I used:
> background{colour rgbt <0.0, 0.0, 0.0>}
> 
> and I got a black background. Can anybody please provide your support to get a
> black background?
> 
> Thanks.
> 
> William
> 

Taking you not to be asking exactly what you asked, try:

background { colour rgbt <0,0,0,1> }

Your three values get promoted to 4 and the 't' values becomes 0 - or no 
transparency. Remember to use +ua and the default png type output(1).

Bill P.

(1) I think openexr is the other which supports the transparency, but I 
don't much use the feature myself so maybe not... Most image formats 
don't support it.

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