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I only just recently tried alpha channel output +UA as a png file and
then used that as an image file and saw nothing different.
Yes, transmit and filter were applied to 'all'. Maybe it did, maybe it
didn't change it, I was looking for the obvious.
Opening the file with PSP showed the image to definately have Alpha as
compared to a non-Alpha png. Thing is PSP couldn't show anything there,
just black or blank, even if I added a second channel in with PSP
itself.
I also used Bits_per_Color to increase the "bandwith" so to speak to
make room for 8 bits of transparency info in that Alpha Channel.
I never understood it to begin with, and now I know why. I agree, the
only way to learn is if others have used it and can manage a
tutorial-like explanation or a word of sense about it at least.
Spider wrote:
>
> Hmm, i'm not certain I understand what the alpha channel really is, as I see it
> it is a channel that is applied over the rest image, and that controls the
> "transparencey" of each pixel. is this it ?
>
> Peter Popov wrote:
> >
> > I posted this in povray.general about a week ago, but 1) that was not
> > the right place to and 2) there was some massove discussion going on
> > so nobody noticed it. I might be luckier this time :)
> Perhaps. I read the first post, but hoped for a discussion so I could have some
> more facts about the alpha channels before I went in and commented. Now,I'll
> have to show my ignorance and ask you pplz (and uncle ken) instead. :-)
>
> <snip>
--
omniVERSE: beyond the universe
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