I feel like such a dope.
Yep, I got it to work. Only set the RenderingAttributes, not
TransparencyAttributes. Just a bug in my code. Range-ordering works,
billboarding, lighting. Very nice.
What ticks me off more is that I have been fighting for 2 weeks to get
range-ordered transparencies going and didn't even think about this
method. Well, I did need it for some semi-transparent objects in the
scene anyway, so I guess it's not a big deal.
Definitely needs a write-up at the org site. I will see what I can do.
-Lee
> -----Original Message-----
> From: J. Lee Dixon
> Sent: Thursday, April 26, 2001 9:12 AM
> To: 'Discussion list for Java 3D API'
> Subject: RE: [JAVA3D] Bill board transparency, alpha test based...
>
>
> Wow, I've been fighting depth-sorted transparencies and
> hadn't thought about this method. I do have some objects
> that are partially transparent, but the vast majority are just masks.
>
> I am now setting my rendering attributes to display if
> GREATER than 0.5, but the masking doesn't seem to be working.
> I can see the texture, but the mask is still white (or red
> in some cases).
>
> Are there other attributes I need to set? Hopefully I
> shouldn't have to enable "blended" mode in transparency
> attributes because that will defeat the whole range-ordering thing.
>
> -Lee
>
> > -----Original Message-----
> > From: David [mailto:[EMAIL PROTECTED]]
> > Sent: Thursday, April 26, 2001 6:17 AM
> > To: [EMAIL PROTECTED]
> > Subject: Re: [JAVA3D] Bill board transparency, alpha test based...
> >
> >
> > Try using the alpha test function in RenderingAttributes instead of
> > transparency attributes.
> >
> > Dave Yazel
> >
> > ----- Original Message -----
> > From: Leyland Needham <[EMAIL PROTECTED]>
> > To: <[EMAIL PROTECTED]>
> > Sent: Thursday, April 26, 2001 2:05 AM
> > Subject: [JAVA3D] Bill board transparency, alpha test based...
> >
> >
> > Im not sure what to call it, but I want to do a bit mask kind of
> > transparency
> > for texture mapped billboard type objects. In OpenGL this is
> > done by alpha
> > testing, and if the alpha value is below 0.5 its transparent
> > and if its
> > greater or equal to 0.5 then its opaque. Also another
> > characteristic of this
> > sort of transparency is that there is no sorting needed
> > because there is no
> > partial transparency. So does Java3D support this, and if it
> > does, how would
> > I go about getting content in Java3D to support this? I use
> > 3d Studio Max
> > and
> > I would like to export in some format that would support this
> > (like vrml or
> > some other). Any suggestions?
> >
> > Thanks,
> > Leyland Needham
> >
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