Ron,
Both billboard and sprite support transparency. You just need to set
the blending mode ('over' will render transparent areas correctly,
'add' will use additive blending).
Chris
On 16 Dec 2008, at 04:57, Ron Aldrich wrote:
Unfortunately, I can't open your test composition (Patch with name
"SpookyReceivePatch" is missing"), but I'm wondering if your movie
is being rendered on a billboard instead of a sprite?
In my experience, billboards always render transparent areas as black.
Best Regards,
Ron Aldrich
Software Architects, Inc.
On Dec 14, 2008, at 8:10 PM, James Sheridan wrote:
Hi All,
I have a composition where I'm trying to frame some videos (So they
don't have square edges) and move them around. I'm placing a mask
image with a black border and transparent center just in front of
the movie (pic in attached example) which works great.
The thing I can't figure out though is how to mask around the edges
of the video properly so that when they move over each other I
can't see the mask image - see attached composition for a demo with
pictures instead of movies.
Would there be some way to use a pixel shader to not render any of
the black pixels? I know at first this seems to look like it would
just remove the mask image (exposing the video again) but I was
thinking I could render the video and frame in a "render in image"
patch first? that way if the black pixels (the frame) are not
rendered then I can see any other movie objects behind the current.
Cheers - James
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