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Old 24-08-2004, 12:39 PM   #1
jakwag
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Default subDivs get transparent when converted from NURBS

Hi

This problem, I don't understand. This is what I do:

1. I create a NURBS plane (or any other NURBS object)

2. I convert it to a subDiv surface

3. I assign a blinn material to it

4. I connect the color of the blin to a tif file

the surface now looks like it's 50% transparent. But it's not when rendered. Why does this happen? If I just create a subDiv plane and attach the blinnmaterial, there is no problems.

This is what I get (the converted subDiv to the right):
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Old 24-08-2004, 02:32 PM   #2
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Ummm.... Maybe you should check the convertion settings.
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Old 24-08-2004, 10:47 PM   #3
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it could have shading or texture info in the coverstion. Re-asign a shader and that might fix it.
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Old 25-08-2004, 06:25 AM   #4
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hi

I've already checked the settings, can't find any shading options there.

I've also reasigned the texture, but that doesn't work. If I asign aplain lambert, then the problem isn't there, but if I put on a texture with a image mapped to it's color.... it gets transparent.

wierd!

Thanks for replying anyway.
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Old 25-08-2004, 06:28 AM   #5
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... again, it can't be a shading option, since it doesn't show on the render. Right?
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Old 25-08-2004, 07:00 AM   #6
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it's the uvs. Make sure that it has uvs assigned to it or it will be transparent.

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Old 25-08-2004, 09:15 AM   #7
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Thanks Alan!

That's it. It doesn't have UV's... How can it not have UV's? I thought UV's came along as a nescesary thing, just like vertex. How can I apply UV's? done it with the automatic mapping, but that not always be what you need.
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Old 25-08-2004, 10:34 AM   #8
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Nurbs do not have a UV map to convert.
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Old 25-08-2004, 11:01 AM   #9
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true but when converted to subd they need uvs
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