Chaos node - odd Normal behavior

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Pavlov
Licensed Customer
Posts: 158
Joined: Fri May 21, 2010 8:49 am

Hello,
Chaos node seems to change the way Normal maps affect material. Notice that this material has no specular, just diffuse.
Without Chaos, changing texture's power inside Image node will change the intensity of the effect in a linear, understandable way.
Normal_A.jpg
Normal_B.jpg
Normal_C.jpg
With Chaos, changing power totally changes shading and brightness of the material:
Normal_Chaos_A.jpg
Normal_Chaos_B.jpg
Normal_Chaos_C.jpg
Paolo
I7 960 3.2 GHZ - 6GB ram - GTS 250 display only - Asus GTX 470
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promity
Licensed Customer
Posts: 363
Joined: Sun Dec 19, 2010 7:59 am
Location: Russia

Juan said that this node is broken - how did you manage to make it work at all? When I connect this node to my materials, I get just a black surface no matter what.
AMD Threadripper 1950X/64gb ram/RTX 3080 Ti + RTX 2070/Samsung SSD 870 EVO 500 gb/
Lightwave 3d
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juanjgon
Octane Plugin Developer
Posts: 8867
Joined: Tue Jan 19, 2010 12:01 pm
Location: Spain

promity wrote:Juan said that this node is broken - how did you manage to make it work at all? When I connect this node to my materials, I get just a black surface no matter what.
This comes from a custom plugin that I'm testing with some users before releasing a new public build.

Thanks,
-Juanjo
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jobigoud
OctaneRender Team
Posts: 244
Joined: Sat Aug 15, 2015 1:28 pm

At the moment the node doesn't play very well with normals, we are looking to fix this in a future version. For now when used for normals you should always set the Gamma on the input texture node to 1.0 and avoid changing Power.
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