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Old 04-25-2013, 05:23 PM   #1
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C4D Vray Transparency issue?

Howdy all,

I'm having a problemo with my transparency maps in Vray - not exactly sure what to search for for troubleshooting even - I'm sure it's quite a basic fix...I'm getting a granular black speckle where the transparency should be kicking in?


Old 04-26-2013, 08:16 AM   #2
Neil V
Neil John Vaughan
Creative Director
Worcester, United Kingdom
Join Date: Jan 2004
Posts: 763
This is probably down to poor geometry. Have you checked the Normals?
Old 04-26-2013, 10:03 AM   #3
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Matthew ONeill
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United Kingdom
Join Date: May 2002
Posts: 9,073
co-planar geometry, you have 2 glass surfaces in the exact same place. This means youve either accidentally duplicated the glass and left it in place. Or commonly you have place 2 glass objects perfectly against each other. Leave a bit of air between them.
Matthew O'Neill
Old 04-26-2013, 11:25 AM   #4
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Hmmm, scratch that I just rendered sans-glass and same problem. It must be how vray is reading my transparency map, somehow...
Old 04-26-2013, 12:44 PM   #5
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Jon Bosley
United Kingdom
Join Date: Jun 2003
Posts: 1,733
Imashination already mentioned the problem - co-planar geometry, but it's not on the glass, it looks like it's on your shoe plane. Just make sure there's only one poly where the shoe is mapped, if not we'd have to see the file to help you out.

brasco on vimeo
Old 04-26-2013, 01:33 PM   #6
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Beautiful guys - yes indeed it was, the source file that was loaded was a 3ds, which I found out was a SketchUp file at one point with a material to the back face, so 2 materials were parsing in the same plane - again, thanks!
Old 04-29-2013, 07:04 AM   #7
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stefan Laub
Vienna, Austria
Join Date: Sep 2002
Posts: 3,809
ccclipper you are also very welcome to come tot he official vray support forum for things like that, we could have helped you instantthere. account you have already as user there

V-Ray on FB::
Old 04-29-2013, 07:04 AM   #8
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