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DarkBASIC Professional Discussion / Specular, Normal and Diffuse

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Madscientist
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Posted: 31st Dec 2009 19:51
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I have a diffuse,specular and normal texture. How do I apply them to a sphere in dbpro?

If it hasn't exploded yet, I haven't touched it.
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KISTech
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Posted: 31st Dec 2009 20:23
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set blend mapping on OBJECT, 0, NORMALIMAGE, 3, 24
set blend mapping on OBJECT, 1, SPECULARIMAGE, 3, 26
set blend mapping on OBJECT, 2, DIFFUSEIMAGE, 3, 4

If it comes out a little dark, change the 4 to a 5 on the last line.

These commands and their results will vary depending on the textures as well. So you might have to try a 17 for specular instead of 26.

OR

You can use a shader.

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Madscientist
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Posted: 31st Dec 2009 21:54 Edited at: 31st Dec 2009 22:22
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So is a shader is required to produce this effect or could I use blend mapping?
(I rendered this in Blender)


If it hasn't exploded yet, I haven't touched it.
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david w
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Posted: 31st Dec 2009 23:24
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Blend mapping will get you the bump and specular effect. But your gonna need a shader to get the shadow.
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KISTech
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Posted: 1st Jan 2010 20:06
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DBPro has some shadowing effects. It's still shader based, but it's internal. You have to use it sparingly though because it can lower the framerate pretty quick.

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Madscientist
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Posted: 2nd Jan 2010 04:52
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Yeah I tried adding the shadowing but it didn't give the result I was hoping for. Is there any way to create the effect seen in the above image just using the stuff that comes with Dbpro?

If it hasn't exploded yet, I haven't touched it.
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KISTech
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Posted: 2nd Jan 2010 20:23
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Not really. It's the built-in shadows, or use a shader.

There are some other techniques, but none that really compare to what a shader can do for you.

You can search these forums for "shadow" or "shadow shader" for more details.

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NickH
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Posted: 22nd Mar 2010 22:36
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Thanks for that KISTech. I had wondered the same thing myself. I wish there was a manual for this one command (Blend Mapping) thats explained so it makes sense to me

My vehicle looks a lot better now, thanks.
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KISTech
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Posted: 22nd Mar 2010 23:04
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Sure thing.

A lot of how something looks with these commands will depend on your textures. I've had to tweak the brightness and contrast on a lot of textures to get things to show up just right. Once you have that part figured out though, it's not so bad.

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NickH
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Posted: 22nd Mar 2010 23:16
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Yeah I did the same thing. Rarely does one image work for all layers.
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