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I found a texture online that I like.
https://3dtextures.me/2018/04/23/brick-wall-010/
It comes with Diffuse, Normal, Displacement, Roughness, and Ambient
Occlusion maps. Is there a POV tutorial on how to use all of these? Thanks.
Michael
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From: Thomas de Groot
Subject: Re: Diffuse, Normal, Displacement, etc. maps
Date: 30 May 2019 03:03:25
Message: <5cef803d@news.povray.org>
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On 30-5-2019 7:29, Mike Horvath wrote:
> I found a texture online that I like.
>
> https://3dtextures.me/2018/04/23/brick-wall-010/
>
> It comes with Diffuse, Normal, Displacement, Roughness, and Ambient
> Occlusion maps. Is there a POV tutorial on how to use all of these? Thanks.
>
Diffuse: self-evident;
Normal:
#local NormalMap =
function {
pigment {
image_map {
jpeg "Mynormalmap.jpg" gamma 1
}
}
}
sphere {
0, 1
pigment {rgb 1}
normal {
function {
NormalMap(x,y,z).red +
NormalMap(x,y,z).green +
NormalMap(x,y,z).blue
} 1.5
scale 0.5
}
finish {
diffuse 1
}
//rotate -20*y
translate z*1
}
Displacement: can be used as another, more traditional, normal map;
Roughness: Same I guess;
Ambient Occlusion: That is an interesting one, but needs a lot more
explanation. I have used ambient occlusion in the far past but involving
the whole scene. It is, among other things, a good way to light up dark
corners. However, I think it is much less useful with the later versions
of POV-Ray (my 2 cents).
--
Thomas
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Mike Horvath <mik### [at] gmail com> wrote:
> I found a texture online that I like.
>
> https://3dtextures.me/2018/04/23/brick-wall-010/
>
> It comes with Diffuse, Normal, Displacement, Roughness, and Ambient
> Occlusion maps. Is there a POV tutorial on how to use all of these? Thanks.
>
>
> Michael
Hi Michael,
Trevor G Quale used normal, specular and diffuse maps back in 2007 -
http://news.povray.org/povray.text.scene-files/thread/%3Cweb.45acdfaa3fb2bd2ec150d4c10%40news.povray.org%3E/.
Robert McGregor made a nice thread in 2008 about ambient occlusion -
http://news.povray.org/povray.binaries.images/thread/%3C48f98dca@news.povray.org%3E/.
And Jaime Vive Piqueres baked occlusion maps in 2012 -
http://news.povray.org/povray.binaries.images/thread/%3C500e49bd@news.povray.org%3E/.
Norbert
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