Rendering a mask 2005-01-09 - By Ed Baker
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Two ways, first you can have only that object in the scene, and then render
as a 32 bit Targa image which will come into Photoshop with its own mask
channel, or you can render the object against the background or scene of
your choice. Then paint the whole object white with the reflectance channel
set to "Constant color" and render the scene against a solid black
background. Viola! Instant mask! The second trick can be used in any 3D
software.
Or get iPak, which will allow you to do multipass rendering in not only the
mask, but shadows, reflectance etc. as their own layers or channels. :)
Ed
11 PM 1/9/2005, you wrote:
>Is there a technique that can be used in TrueSpace to render a mask of
>an object. I would like to take an object I've created, then render it,
>and then get an alpha-mask so I can composite it with other graphical
>elements without worrying about what backdrop color I choose.
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