converting difuse texture to normal

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bongobeat
Posts: 1076
Joined: Thu May 16, 2013 5:58 pm
Location: France

converting difuse texture to normal

Post by bongobeat »

Hey there,

is that possible that someone makes me 2 normal textures please?

I ve followed the tutorial from Leki but I think I've done something wrong.
I have some small black zones when rendering the texture in the editor.

a screenshot without light:
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Image
with a torch:
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Image
My asset pack: viewtopic.php?f=22&t=9320

Log1 mod : Toorum Manor: viewtopic.php?f=14&t=5505
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Skuggasveinn
Posts: 562
Joined: Wed Sep 26, 2012 5:28 pm

Re: converting difuse texture to normal

Post by Skuggasveinn »

Hi

I'm willing to help you out, just know that if you are taking a diffuse map and simply rearranging the color channels that will never work, It needs to be normal map to begin with.
Leki's tutorial was about taking a log1 normal map and changing it to log2 normal map, it does not cover taking a diffuse map and changing it to a normal map.

Nvidia's filters along with other software like crazybump, MindTex and others can take a diffuse map and "generate" a normal map from it. That generation process does a lot of guessing and you will always get a quick and dirty result.
The proper way is to bake the normal map from a high poly mesh, in many cases that means that you will have to create that high poly mesh and that can be a lot of work, hence programs like crazybump exist for people willing to settle.

But like I said, willing to help you out, I have both photoshop with nvidia filters and also MindTex that I can run your diffuse map through, you just need to explain to me what it is that your are creating, is this a glass window ? , if so is it a whole glass plain or are the green/greyish straight lines separating the different window plains ? and so on.

best regards.
Skuggasveinn.
Link to all my LoG 2 assets on Nexus.
Link to all my LoG 1 assets on Nexus.
bongobeat
Posts: 1076
Joined: Thu May 16, 2013 5:58 pm
Location: France

Re: converting difuse texture to normal

Post by bongobeat »

ah ok! my misunderstanding so!
That's why my normal maps are totally wrecked then.

Well I want to use these textures for a wall, mosaic/stone type. It replace the inside wall tile texture that is used in the castle wallset.
I wanted a type of fractal texture, but I did not find something nice, as the diffuse texture has to be well done for the castle wall model. So I finally pick these one.

here is the 2 diffuse textures. I think a simple conversion will do if those black zone aren't seen anymore.
http://www.photo-graphix.fr/storephoto/grim/palace.rar
My asset pack: viewtopic.php?f=22&t=9320

Log1 mod : Toorum Manor: viewtopic.php?f=14&t=5505
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Skuggasveinn
Posts: 562
Joined: Wed Sep 26, 2012 5:28 pm

Re: converting difuse texture to normal

Post by Skuggasveinn »

I took a swing at this.

here is the result.
http://www.zorglubb.net/grimrock/dropzo ... xtures.zip

its always a question of how much influence the normal map should have, here you can see the results with and without the diffuse.
there are still so "black spots" inside the purple mosaik texture but they are part of the diffuse, black color is a black color, spec will only make it shiny or dull black, normal will make it stick out or in :D
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Image
hope that helps.
Skuggasveinn.
Link to all my LoG 2 assets on Nexus.
Link to all my LoG 1 assets on Nexus.
bongobeat
Posts: 1076
Joined: Thu May 16, 2013 5:58 pm
Location: France

Re: converting difuse texture to normal

Post by bongobeat »

this looks fine, thanks a lot for your work! :D
My asset pack: viewtopic.php?f=22&t=9320

Log1 mod : Toorum Manor: viewtopic.php?f=14&t=5505
kelly1111
Posts: 349
Joined: Sun Jan 20, 2013 6:28 pm

Re: converting difuse texture to normal

Post by kelly1111 »

may I ask a favor ?

Can someone please make me a normal map for the following texture

Image

Or does anyone have something similar as a wall texture to use?
bongobeat
Posts: 1076
Joined: Thu May 16, 2013 5:58 pm
Location: France

Re: converting difuse texture to normal

Post by bongobeat »

this texture is too small, didn't you have something bigger?

this texture, which actually is not a proper size and need to be resized, is similar to texture used on items (in size), so if you plan to put something like that on a wall, the result will be horrible
My asset pack: viewtopic.php?f=22&t=9320

Log1 mod : Toorum Manor: viewtopic.php?f=14&t=5505
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