File madness

[arail1]

Can anyone tell me what's going on here. My texture files are replicating like bunnies. I think it has to do with Vray but I'm not sure.

Thanks for any input I can get. It's madness when I take the model over into modo.

[thomthom]

Have you imported many components with the same material?

I noticed when I placed a bunch for 2d silhouette people, with a black material, that each would get a unique black material when V-Ray was loaded. The reason probably being that V-Ray adds extra V-Ray data to each material, so when you import the first component, V-Ray attached data to it - then when you import the next, with what should be the same material, SketchUp thinks they are two separate materials.

Because VfSU is slow to load I usually model without V-Ray loaded. Then you avoid that problem.
But when you have a model like that you can use my CleanUp plugin to merge identical materials - you have the option of ignoring the extra meta-data some render engines add to materials.

[derei]

Similar things happened to me when I used MaxwellRender and UV Mapping. When the plugin exported the geometry, it made a unique texture for each polygon in geometry. In this way I had hundreds of materials for a surface, each one with its small part of texture.

[arail1]

Thanks so much for the replies.

I'm going to take the topic over into the SketchUp Discussions thread. I experimented with the model some more this morning and it turns out the texture duplications occur at the moment I Export as OBJ. So, probably not a Vray issue. Driving me crazy nonetheless.

Thanks again.

[thomthom]

@arail1 said:

Thanks so much for the replies.

I'm going to take the topic over into the SketchUp Discussions thread. I experimented with the model some more this morning and it turns out the texture duplications occur at the moment I Export as OBJ. So, probably not a Vray issue. Driving me crazy nonetheless.

Thanks again.

So, do you end up with lots of extra materials in the SketchUp model? Or is it just the texture files when you export?

[arail1]

Just the texture files when I Export.

When I work in SketchUP I create a file that has the model and all of it's textures in it for organizational purposes. The file for this model has 4 wood textures (JPGs). When I Export it as OBJ the file shows the SU model and 77 textures - all instances of the original 4. This shows up in the file folder, not in the Materials panel or anywhere else in SketchUp. But when I open the model in modo I have 77 textures in the Shader Tree and 77 texture polygon groups in the Statistics panel - so the file madness is coming along with the model.

I can rebuild this model easily but my curiosity wants to know why this is happening. I can make a simple cube, copy it and distort the 6 faces and get nothing but the original textures when I Export so it has something to do with this particular model.

Thanks for your input so far.