RE: [java3d] Transparent GIFs and Transparency Attributes

[CAZOULAT Renaud CNET/DIH/REN]

> I believe this was already briefly discussed in the list, but I was
> unable to find a solution mentioned.
Yes I already mentionned that problem but had no answer :-(

> This works fine when I initially set up the scene- however, as soon as
> the user begins toggling the transparency of the photograph (and I set
> the transparencyAttribute of the photograph), the transparent GIFs get
It's because as soon as you put a transparency attribute (even with a
transparency value set to zero),
your object is drawn in a second rendering phase which use the z-buffer in
read-only mode.
(a classical method to have a "correct" rendering for transparent objects).
So if all your objects have a transparent attribute, they will be always
drawn in the
same order, regardless any z-info). You could try to change the order of
specifying your objects. But 
although it's tricky, the optimisation scheme of Java3D may change *your*
ordering (unless you use an OrderedGroup object).

I am afraid there is actually no solution to that problem. I would love to
have 
an answer about that issue from sun people, since it is an important issue
(at least for me ;^))

cheers
renaud

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