Can you use UV map to generate a bump map?

Hello all,

I’ve got a sphere with a UV mapped image on it I can see the image in my render, but I want that image to emboss onto the sphere. I would use the Normal Map setting in the regular textures to do this, but I can’t seem to figure out how to do this with a UV texture.

Is this possible?

Thanks for any help,
Monty

A UV texture is nothing special, just a texture mapped to an objects uvs. Its all down to what’s on your texture. Unfortunately you’re the only person who knows what that is !

I assume that you have the UV-map applied to your sphere using UV-mapping. So why would you use a different mapping method if you want the surface of the sphere to be embossed based on the very same UV-map?

If the UV-mapped material is correctly projected on your sphere you only have to tick the “Displace” influence option in the materials- panel:

Ulf B.,

I’d like to see the top of that panel because where do you pick the UV map instead of cloud or image or something else. I don’t see any place to plug in the UV texture instead of one of the other texture options? Sorry if these questions are so convoluted.

So the problem seems to be that you are not quite familiar with UV-mapping :smiley:

Here is the upper properties window of an UV-wrapped cube.


Note: You have to check “Premultiply” only if you have an UV-image including transparencies like in my *.png-file.

And here is a link to tutorials on the topic:
http://www.blendtuts.com/blender_tutorials

HTH

Excellent! I watched the texturing and UV mapping tutorials there and discovered what I need. Basically it seems like you use the UV editor to position verts the way you want over the texture map. Then, enter that same texture map into a texture slot, set to UV mapping and bump away!!

Now how do I get this to work in Lux Render? Possible?

Well, some kind of. It’s the vertices normals, you are positioning across an image. And as you have an UV- mapped texture you want to use it for texturing as well.

Yes it is, as this is a standard feature to all render engines. However I am not using the Lux renderer at all.

Why don’t you stick to blenders internal features to familiarize yourself with mapping in general before adding another level of complexity? If you tweak the internal renderer you will get amazing results and an in depth view into material settings.

I remember that CG has some tutorials about external rendering.
> http://www.blendercookie.com/

And for any additional question about the Lux-renderer pls. pose it over there:
http://blenderartists.org/forum/forumdisplay.php?24-Other-Software