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Soljarag
05-20-2008, 05:13 AM
Hello,

I'm currently doing some tests for my car tail light, and

I'm using a sub object material and setting the front of the tail light glass as the color without a bump map, then the back has the color with a bump map.

However when I render it, I'm not getting any bump look at all.

If i set the entire thing to the "color with bump map" I get the effect I want.

So can anyone look at my file and see if I'm doing something wrong?



Thanks!

http://www.uploading.com/files/4FJDM..._test.zip.html (http://www.uploading.com/files/4FJDMH53/Taillight_test.zip.html)

Soljarag
05-20-2008, 05:14 AM
in the file, you can go to the material editor and find the "tail light" materal, its a Sub object material.


heres a test render with just the bump material on the back

http://img218.imageshack.us/img218/5449/taillightclearzj0.th.jpg (http://img218.imageshack.us/my.php?image=taillightclearzj0.jpg)

and heres a test render with the bump material everywhere, not using the sub object material

http://img292.imageshack.us/img292/4818/taillightbumpzu6.th.jpg (http://img292.imageshack.us/my.php?image=taillightbumpzu6.jpg)


here's the method I'm trying to use (found on another fourm) http://img341.imageshack.us/img341/3633/signalsexplanationey4.jpg

Marcel
05-20-2008, 09:34 AM
Does the material render both sides of the faces? If backface culling is on for this material, the polygons facing away from the camera would not be rendered.

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05-20-2008, 09:34 AM
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