subDivs get transparent when converted from NURBS

Introduction to Maya - Rendering in Arnold

This course will look at the fundamentals of rendering in Arnold. We'll go through the different light types available, cameras, shaders, Arnold's render settings and finally how to split an image into render passes (AOV's), before we then reassemble it i

Watch

# 1 24-08-2004 , 12:39 PM

Registered User
Join Date: Jan 2004

Location: Copenhagen, Denmark

Posts: 55

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):
user added image

: ) Jakob

It's the "hard", that makes it great! - Tom Hanks

Quote

# 2 24-08-2004 , 02:32 PM

Technical Director
Join Date: Feb 2004

Posts: 2,988

Ummm.... Maybe you should check the convertion settings.

Imagination is more important than knowledge.

Quote

# 3 24-08-2004 , 10:47 PM

Subscriber
Join Date: Mar 2003

Location: with PonysGirl

Posts: 2,573

it could have shading or texture info in the coverstion. Re-asign a shader and that might fix it.

Quote

# 4 25-08-2004 , 06:25 AM

Registered User
Join Date: Jan 2004

Location: Copenhagen, Denmark

Posts: 55

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.

: ) Jakob

It's the "hard", that makes it great! - Tom Hanks

Quote

# 5 25-08-2004 , 06:28 AM

Registered User
Join Date: Jan 2004

Location: Copenhagen, Denmark

Posts: 55

... again, it can't be a shading option, since it doesn't show on the render. Right?

: ) Jakob

It's the "hard", that makes it great! - Tom Hanks

Quote

# 6 25-08-2004 , 07:00 AM

Moderator
Join Date: Oct 2002

Location: London, UK

Posts: 2,800

it's the uvs. Make sure that it has uvs assigned to it or it will be transparent.

Alan

Technical Director - Framestore

Currently working on: Your Highness

IMDB

Quote

# 7 25-08-2004 , 09:15 AM

Registered User
Join Date: Jan 2004

Location: Copenhagen, Denmark

Posts: 55

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.

: ) Jakob

It's the "hard", that makes it great! - Tom Hanks

Quote