Outerra forum
Anteworld - Outerra Game => Modding: Importer, Tools & Utilities => Topic started by: necro on August 07, 2013, 11:53:42 am
-
Hello guys,
especially angrypig.
Today i gonna working on some cool metal materials. I know that metal materials arent finished yet. But maybe they dont need to be to get my expected result.
Lets have a look at the following image. As you can see i am trying to catch the material settings like in the right image. This is a screenshot of the unigine benchmark. The left one is what i got so far.
(https://lh6.googleusercontent.com/-hRSRTorJsC4/UgJrLQPpN-I/AAAAAAAAC0w/hZAD_HAJm-Q/w1266-h630-no/screen_1375869207a.jpg)
I worked with the information of the wiki entry of outerra materials ([size=78%]http://xtrac.outerraworld.com/trac.fcgi/wiki/material (http://xtrac.outerraworld.com/trac.fcgi/wiki/material)[/size]) and so i know that toying around with the Ax should give me control about the metalish look of the material.
This is my material setting for the metal:
{
"name" : "Metal_001",
"diffuse" : "163,163,163,255",
"Ax" : "207",
"Ay" : "7",
"m" : "127",
"tex_diffuse" : "roof_diff.dds",
"tex_normal" : "roof_nrm.dds",
"tex_env" : "roof_ref.dds",
"tex_opacity" : "",
"tex_reflectance" : "roof_ref.dds"
}
(https://lh4.googleusercontent.com/-TzXHuK1IvRs/UgJqynQ756I/AAAAAAAAC0c/OidnHJCBlYw/s426/photo.jpg)
I took the textures as i understand them. Please correct the setup if you know more than me. I dont really know how a reflection map has to look like. As i understand the reflection is just the color of that texture scaled by Ax. So actually i should get the goldish reflection. But my reflection ingame is silverish what makes sense because my Ax is ~ 0.81.
So angrypig, brano told me that you are the god of materials. Please enlighten me.
Edit:
I forget to post a screenshot with low sun settings. So here it is:
(https://lh5.googleusercontent.com/-gDomA1xCEF4/UgJwPSv8cHI/AAAAAAAAC1k/kptMWeR6238/w1280-h720-no/screen_1375891500.jpg)
-
These screenshots need to be BIGGER! They look damn good as is but if you want them better. I am all for it.
-
Great looking materials! Nice work! :)
Marko
-
Nice feel for materials !
-
Ok, i took the big images. On this scale you see that the materialsettings doesnt work like i want.
-
One thing that maybe people miss there: the values of Ax, Ay and m are multiplied by 0..1 values from the corresponding textures. If you have m = 127 (which is equivalent to m ≈ 0.5), then you are basically limiting the values of m to range 0 .. 0.5. Usually, when you have a texture for given parameter, you set the multiplier in material to 255 (or 1.0).
-
Makes sense. I fixed that but it doesnt make a big difference. I guess my textures are wrong (but diffuse and normal)
-
You are using "reflection" texture for roughness and reflectance (tex_env is for roughness) but those are completely different things. Ax/reflectance texture tells what kind of material is there like plastic/metal/diamond, use 7 for common materials and 200 for metallic, this texture should be homogeneous, ~200 for copper and ~7 for rivets (you can add small variations +- 1-2, but it's not necessary). m/roughness texture 0 for mirror and 255 for perfectly matte material.
a few hints:
- you should create the roughness texture from the diffuse texture not the normal map
- make scratches darker to make them shine and oxidized places more brighter to be matte
- negate the green channel in the normal map texture rivet heads should pop from the texture
- the copper around rivets doesn't have to be deformed so tightly in the normal map
- make shinny just rivet heads not the surroundings
- if you use real values in the textures set Ax and m to 255 or 1.0
-
Thank you angrypig. I will post my results here. This were the facts i was looking for.
-
Good morning. It was possible to improve the material with angrypigs hints. Thank you for that. I had to rework the rivets. They are smaller and dont have deformations at the borders.
My material setup is now the following:
"name" : "Metal_001",
"diffuse" : "163,163,163,255",
"Ax" : "100",
"Ay" : "7",
"m" : "255",
"tex_diffuse" : "metal_diff.dds",
"tex_normal" : "metal_nrm.dds",
"tex_env" : "metal_env.dds",
"tex_opacity" : "",
"tex_reflectance" : "metal_ref.dds"
For faking the metallish illusion i cannot take 200 for Ax. This would be result in a chromium like appearance. Setting it to 100 gives some good results. Which you can see here:
(https://lh6.googleusercontent.com/-3mF_b9cwLXU/UgXbJiTa7XI/AAAAAAAAC28/KOpxVeTsVbg/w1598-h598-no/screen_1376114879a.jpg)
Just the color of the reflection is not as i expected. I made it yellowish, but it just reflects the sun. So its white over the day and goldish at dusk and dawn. I read somewhere, that the color of the reflectionmap controls the color of the reflection, if someone doesnt want the normal sun reflection color. So i guess, i could make my reflection map even grey and the result would be similar.
(https://lh5.googleusercontent.com/-5lKpS-0qkos/UgXbH_tKhGI/AAAAAAAAC20/sAymDAksJzk/s875-no/texmap.png)