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3 Dimensional Chat / A question about bumpmap in blender

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born for game
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Posted: 28th Sep 2011 03:47 Edited at: 28th Sep 2011 03:48
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Hi,mates.
I am learning blender now.
If I made a diffuse map and a bumpmap for a model,how can I set them to the model in blender.

My method is type "U" in edit mode, and unwap the model , so I get a uvlayout map. Then I "open inmage" in uv-edit field, choose the diffuse map. Set "matiarial" to "Face to texture". What should I do with the bumpmap next in order to show the bumpmap in render resault?

Thank you very much.


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Ortu
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Posted: 28th Sep 2011 04:04
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you need to load it as a second image in the material settings, then on the 'map to' settings for that image, remove it from the color channel and add it to the normal channel


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born for game
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Posted: 28th Sep 2011 05:14
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Still not work, but thank you anyway. I should learn more.
My main problem is not knowing how to load an image in the materail settings.


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Ortu
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Posted: 28th Sep 2011 05:41
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which version are you using? 2.49 or 2.5?


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Posted: 28th Sep 2011 05:54
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The version is 2.59.0


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Ortu
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Posted: 28th Sep 2011 06:19
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attached image, it's kinda messy sorry. it's grabbed from 2.49 but 2.5 works the same way the buttons are just in a different place.. i think right hand side instead of along the bottom.


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Posted: 28th Sep 2011 06:25
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Thank you,mate. I am trying.


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Posted: 28th Sep 2011 06:29
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Thank you very much for such a good image.


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Posted: 28th Sep 2011 06:47
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Finally I got this render map. I think I should draw my bumpmap again.


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Posted: 28th Sep 2011 08:10
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Now it looks like this picture.


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Ortu
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Posted: 29th Sep 2011 03:04 Edited at: 29th Sep 2011 03:05
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nice work, it's coming along. now get a good specular map in the mix to really make it pop


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Posted: 29th Sep 2011 03:45
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I found I could set both the "specular" option and "normal" option in the same bumpmap and I got a diffirent render resault. Is this method right? What the diffirence between the bumpmap and the real single specular map?


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Ortu
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Posted: 30th Sep 2011 03:32 Edited at: 30th Sep 2011 03:34
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not much really, both are black and white images, the only difference is intention. spec controls how light shines on a material, and it'll look pretty similar to a bump higher parts get higher values... higher values in bump will also probably have higher values in spec, but not necessarily the same values.

fine detail bumps probably wont have want much contrast between highest and lowest values, while spec usually needs a bigger difference between them.

also, when using a spec map, drop the value to 0 on the material to let it equal the image values, else it'll come out alot brighter than intended

image attached


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Posted: 30th Sep 2011 03:57
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I think your tutorails are very useful for our forum. I only could say : thank you very much ,mate.


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Ortu
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Posted: 30th Sep 2011 06:22
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Sure thing, happy to help


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