Strange Mesh on V4 Head

[yaoye]

Hello there,

I got a strange mesh on my V4 render in OcDS. How to get rid of this?

Thanks.

[porschefan76]

Hi Yaoye,

I'll check in a bit to see if I can replicate that, but it looks like you added a material to the 1_eyebrow surface of V4. Typically ignore that portion material-wise. Try unlinking whatever material you have connected to that V4 surface.

Hope it helps.

Rich

EDIT: Just checked, unlinking works ...

or what Badmilk said below.

[badmilk69]

Here:

[yaoye]

Hi Yaoye,

I'll check in a bit to see if I can replicate that, but it looks like you added a material to the 1_eyebrow surface of V4. Typically ignore that portion material-wise. Try unlinking whatever material you have connected to that V4 surface.

Hope it helps.

Rich

EDIT: Just checked, unlinking works ...

or what Badmilk said below.

Hi Rich,

Thanks for your quick reply, and I checked too, and it works as you guys said

[yaoye]

Here:

Hi badmilk69, thanks for the screenshot, and I found I typo "eyebrow" to "eyebrows"

now it works

[SimonJM]

The eyebrows are usually set to invisible in Daz Studio - the usual reason for them being seen is toggling V4 invisible and then back visible; the eyebrows get set to being visible when you do that.

[t_3]

The eyebrows are usually set to invisible in Daz Studio - the usual reason for them being seen is toggling V4 invisible and then back visible; the eyebrows get set to being visible when you do that.

additional note: as of version 4 daz studio does no longer allow access to separated bone meshes; if you use the eye icon (= visible switch in ds4 = hide switch in ds3), the plugin can hide any single geometry instantly. in ds3 this would be even possible for bones - in ds4.x this is no longer possible.

to overcome this - at least to some extent - the plugin uses a trick, which can be controlled via the surface filter: it replaces the linked material on the fly with a portal material set to "off" - currently the only way to have a null material in octane (means a material, which is not only invisible through opacity, but doesn't interfere with the rendering at all). this trick still allows to make some bones of a figure invisible, like misc. eye parts (if wanted), and the eyebrows (since seldom used) - and it identifies them from their surface/material name. so, if you want to hide something that is a bone, but has no unique material applied (like other body parts) there is currently no way to get this done...

[yaoye]

The eyebrows are usually set to invisible in Daz Studio - the usual reason for them being seen is toggling V4 invisible and then back visible; the eyebrows get set to being visible when you do that.

additional note: as of version 4 daz studio does no longer allow access to separated bone meshes; if you use the eye icon (= visible switch in ds4 = hide switch in ds3), the plugin can hide any single geometry instantly. in ds3 this would be even possible for bones - in ds4.x this is no longer possible.

to overcome this - at least to some extent - the plugin uses a trick, which can be controlled via the surface filter: it replaces the linked material on the fly with a portal material set to "off" - currently the only way to have a null material in octane (means a material, which is not only invisible through opacity, but doesn't interfere with the rendering at all). this trick still allows to make some bones of a figure invisible, like misc. eye parts (if wanted), and the eyebrows (since seldom used) - and it identifies them from their surface/material name. so, if you want to hide something that is a bone, but has no unique material applied (like other body parts) there is currently no way to get this done...

hi SimonJM, t_3

thanks for the explanation

And I got this strange line on forehead for every V4 head morph (except the default V4 head) in OcDS, and not happened in Octane Render Standalone.

[UruMike]

Hi yaoye

To me this looks like a line which appears when an invisible material crosses an invisible one. In you case this would be the invisible eyebrows crossing the forehead.
Try to either scale the eyebrows down or move them inside the head.

Hope this helps!

[t_3]

... yes; scaling or moving the eyebrow away should help in this case (thanks UruMike)

the reason for this in general is the accuracy of the raytracing, controlled by the rayepsilon parameter (in every kernel's settings). if it is to high, it may show visible cracks where an invisible object breaks through a visible object; might i.e. also happen with a haircap object with an opacity map applied, when the invisible parts penetrates parts of the forehead.

lowering rayepsilon will make those cracks go away at some point.

please note that the daz slider text boxes only show 4 digits after the dot, but this parameter goes as low as 0.0000001 - so it might need a little bit of trial and error; it is also important to known, that very low values will cause texturing artifacts if the camera is far away from objects - so it might need some adjustment depending on the actual scene & viewpoint...