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Issue with scalp texture when exporting to C4D

northerainnortherain Posts: 15
in Technical Help (nuts n bolts)

Have a bit of an issue where when I export from Daz3d to Cinema 4D the scalp has no texture. When I put in my textures for the face, torso, etc everything looks fine except for a part where the forehead is. I'm assuming this is part of the hair model, in this particular example MRL Warrior Hair.

With my limited understading I think that the scalp texture that comes with the hair is supposed to be transparent except for the side buzzcut, but this is somehow getting messed up in C4D. 

Anyone have any idea what I'm talking about? Sorry, I know this isn't a Daz issue per se, but I'm hoping someone can help me.

Comments

  • Richard HaseltineRichard Haseltine Posts: 102,718

    In Daz Studio select the hair and, in the Surfaces pane, the scalp surface (it may be easiest to do both at once using the Surface Selection tool) then in th Editor tab see what map is applied to opacity or Cutout Opacity (depending on which shader is being used0 - you need to reapply that map as a transparency/opacity map in C4D. You will also need to do that for the figure's eyelashes, and reset the opacity on the eye surfaces (which are white at the moment). Generally opacity settings, at least with maps, will not tasnlate over and will need redoing in C4D.

  • northerainnortherain Posts: 15

    I don't get an opacity option in C4D, do I need to turn them into shader materials?

  • prixatprixat Posts: 1,590
    Its the alpha channel.
  • northerainnortherain Posts: 15

    Okay, a bit further along, no matter what I do, it stays black.

  • northerainnortherain Posts: 15

    Thank you both. It was indeed the alpha channel, but it was useful to learn the opacity stuff for other things.

  • Richard HaseltineRichard Haseltine Posts: 102,718

    Sorry, I didn't know what the property would be labelled in C4D.

  • northerainnortherain Posts: 15

    ...and I'm back. While it looks fine in the viewport, when rendering in Octane the scalp looks black again.

  • wolf359wolf359 Posts: 3,837
    edited May 2019
    northerain said:

    ...and I'm back. While it looks fine in the viewport, when rendering in Octane the scalp looks black again.

    Hi
     I am afraid you are going to have to experiement with the various blend modes/Channels of your external render engine.
    Daz transmaps are interpreted differently by different material systems.

    For example with C4D Standard render it is a simple matter of  moving the transmap from the transparency to the alpha channel.

    However with VRay for C4D it appears in the "Material weight" channel but has to be inverted to display correctly.
     
     It literally took me weeks to figure out how to get the daz 
    transmaps to render correctly in Lightwave.angry

    See if there is an option to invert that Map in octane. 

     

    VRAY-.jpg
    503 x 1048 - 174K
    Post edited by wolf359 on
  • Singular3DSingular3D Posts: 545

    In general it is a matter of intersecting polygons in Vray for C4D. If you scale the hair up, the black parts disappear, when the right opacity map is applied. You may try to play with the subdivision settings at render time as well.

  • northerainnortherain Posts: 15

    Came back to post just in case someone finds this and also has the same issue: I just had to set the texture in the Opacity channel in an Octane material.

    I now have a slightly different problem with some glitchy black outlines, but I'll figure it out myself.

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