transmapped hair

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transmapped hair

Postby tangles » Sat Jun 01, 2013 1:30 am

tangles Sat Jun 01, 2013 1:30 am
I am having problems rendering transmapped hair. The Poser figure has blond hair, but when rendered with Octane the colors are wrong.
I have attached screen shots of the Poser shader tree for one of the hair props and the corresponding Octane tree.
Any suggestions?

System: Win7-64 on i7-3770 CPU, 16 GB RAM, GForce GTX660Ti
Attachments
octane-tree.PNG
Octane settings
poser-tree.PNG
Poser shader nodes
octane.jpg
Octane render
poser.jpg
Poser render
Win7-64bit on i7-3770, 16GB RAM
GeForce GTX 660Ti 4Gb
tangles
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Re: transmapped hair

Postby face_off » Sat Jun 01, 2013 2:19 am

face_off Sat Jun 01, 2013 2:19 am
I think what is happening is that the Poser material has 2 sources of diffuse (Diffuse_Color and Alternate_Diffuse). The Diffuse_Color is gray, and the Octane plugin is using that gray color to tint the hair.

In the material tree, try "Thick = glossy" -> "diffuse = multiply" -> "texture2" and change the color from the gray to pure white (so there is no tint) or brown.

Also, it's possible the specular is too bright and overpowering the hair color, so reduce the "roughness" and "specular" -> "power".

Hope that helps.
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Re: transmapped hair

Postby mlru » Mon Jun 03, 2013 10:30 am

mlru Mon Jun 03, 2013 10:30 am
face_off wrote:Also, it's possible the specular is too bright and overpowering the hair color, so reduce the "roughness" and "specular" -> "power".

That's my guess, too. You can also try to put the diffuse map into the specular node (with power=1 and gamma=2.2) to give it a colored shinyness and fake some anisotropy.
Win8.1/64Bit | i7-950 | 12GB | GTX Titan 6GB | NVidia Driver 431.36 | Octane 4.05 | DAZ Studio 4.12 - Plugin 4.04
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