Overlaying one channel with another.

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Steve Baker (steve++at++mred.bgm.link.com)
Fri, 17 May 96 20:56:39 -0500

Can anyone tell me if this will work... I want to render the scene as two
channels that overlay each other, one covers the entire screen, the other
just a small part of the screen, overlapping the first...

     +---------------------------------+
|Channel A |
| +----+ |
| | | |
| +----+ |
| Channel B |
| |
| |
| |
     +---------------------------------+

I carefully choose the frustum of B so that the pixels it renders are theoretically
identical to those of channel A.

If I slide channel B around on the screen, continuously adjusting it's view
frustum appropriately, will I see strange swimming anomalies around it's edges?

I appreciate that I would have to carefully override Performer's automatic
LOD transition range adjustments - but what else might happen?

Thanks in advance...

    Steve Baker

  Steve Baker 817-323-1361 (Vox-Lab)
  Hughes Training Inc. 817-695-8776 (Vox-Office/vMail)
  2200 Arlington Downs Road 817-695-4028 (Fax)
  Arlington, Texas. TX 76005-6171 steve++at++mred.bgm.link.com (eMail)

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