Matted Hair

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Matted Hair

Postby SaltyCowdawg » Sun Feb 02, 2020 12:50 am

I've used the Oforsaken Chinese Bob hair before and never noticed this before.

matted-hair.png
Her hair looks like white glue is in it.


To me it looks like the alpha masking isn't quite working correctly or is it the texture itself? I tweaked the node setup and instead of using a transparent and a mixer Irouted the alpha to the alpha input of the principled shader but it made no difference.

Am i missing something here?

mesh-hair-node-setup.png


Thoughts?
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Re: Matted Hair

Postby Elvaerwyn » Sun Feb 02, 2020 3:32 am

Which version of makehuman is this being generated by and what version of blender is it being generated in?
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Re: Matted Hair

Postby punkduck » Sun Feb 02, 2020 8:56 am

Hi, try to set color-space of normal map texture to "Non Color". For a normal map this should be standard. Was that created by exporter or socket communicator? If so we have a small task to solve ;)
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Re: Matted Hair

Postby Aranuvir » Sun Feb 02, 2020 10:50 am

Though the solution using the transparent shader isn't wrong, using the alpha socket of the principled shader would be the better solution. The old solution is used for easier backward compatibility with B27. I've changed the behavior with my latest commit, which breaks compatibility. Next big todo: remove all B27 code to simplify the plug-in.
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Re: Matted Hair

Postby SaltyCowdawg » Sun Feb 02, 2020 1:16 pm


Was that created by exporter or socket communicator? If so we have a small task to solve


DOH! Don't know why I didn't notice that myself.

Yes this was created by the socket through MHFB.

There is definitely an improvement but some areas on top still look like too much mousse is in the hair. (intentional?)

matted-hair-non-color-data-normal.png
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Re: Matted Hair

Postby Aranuvir » Sun Feb 02, 2020 2:51 pm

Is this cycles or eevee? In case of the latter check your blend mode in the material settings, perhaps invert the backface culling settings. Maybe you must also edit general eevee settings. Furthermore check the normal directions of the mesh.
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Re: Matted Hair

Postby punkduck » Sun Feb 02, 2020 8:56 pm

There could be two reasons I also know:

1) The normals of the faces do not point to the outside (can be tested by unplugging the normal map), At least for backsides of faces a normal map creates unpredictable results. Normally you should flip the faces in this case. Or use a setup where your normalmap is ignored for backfaces. I dunno I had an example here where I explained to avoid the normalmap "inside" skirts.

2) The number of transparency layers is too high. For the chinese bob of O4saken I had the problem and mentioned it directly. For my dark haired girl and this hair I did not really watch when I did the example picture. Here you can change the value:

transparency.jpg
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Re: Matted Hair

Postby azajali43 » Fri Mar 06, 2020 1:56 pm

Is it is a new update? how can I get this version.
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