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Old 01-11-2008, 05:39 AM   #1
GDMaster
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Default Matte Rendering

Iím creating an animation of a character swinging a golf club, and the club, of course, appears both in front of and behind parts of the character. I have mental ray set up to save render layers out to .psd files for compositing Ė but Iím having trouble with the matte layer. I canít get the matte to ďcut outĒ the parts of the club which are behind the character. If I have both objects in the same layer, then any material overrides Ė where the opacity is set to ďblack holeĒ Ė gets applied to all materials, and if I have the objects in separate layers, the matte doesnít know where the cut-outs should be...

Could someone be kind enough to explain this process for use in animation? Or if there are books which include this subject in detail, or tutorials, etc, please let me know...
Iíve looked in all my Maya books and done a Google search but canít find anything more than a few lines on this rather important topic. (And maybe itís me, but I find the Render Layer Editor rather confusing...)

Any help greatly appreciated.
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Old 01-11-2008, 08:33 AM   #2
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my first thought is you might have to rotoscope (mask) in your composite package?? but im not thinking too well today.
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Old 01-11-2008, 11:42 AM   #3
Jay
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Dont do the material overide on the layer, do for the shader on the club and whatever else you need.

It should work nicely then
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Old 04-11-2008, 05:44 PM   #4
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Thanks for that! The per-object overrides are not obvious, but I found them...
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