PRB: Z-Channel Gives False Results with Small Scenes
  
PSS ID Number: Q180247
Article last modified on 02-06-1998
 
IRIX:3.51,3.7; WINNT:3.51,3.7
 
IRIX winnt
 

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The information in this article applies to:
 
 - Softimage 3D for IRIX, versions 3.51, 3.7
 - Softimage 3D for Windows NT, versions 3.51, 3.7
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SYMPTOMS
========
 
When you render your SOFTIMAGE 3D scene and your Particle scene with Z-
Channel, and then composite the two scenes, the particles are appearing
incorrectly behind your object.
 
CAUSE
=====
 
If your scene is too small (i.e. does not cover enough SI units), the Z-
Channel information gives you false results.
 
RESOLUTION
==========
 
Scale the scene up (try 10 times its original size), and then render both
scenes again.
 
REFERENCES
==========
 
If you have any questions concerning the information contained in this
article, contact support@softimage.com by e-mail.
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Keywords          : si si3d si3dmr si3dren
Version           : IRIX:3.51,3.7; WINNT:3.51,3.7
Platform          : IRIX winnt
Issue type        : kbprb
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Copyright Microsoft Corporation 1998.