Renderotica

Hi all,

Is anyone able to tell me what I've done to cause this black outline issue?

The character is G8F. Golden palace is applied to the character - I Double checked the GP shell wasn't applied to Breastacular or chest area. 

Any help would be welcome, I'm sure it's something fairly obvious. But I can't find it.

Thanks,

Originally Posted by: BrotherHades

Try setting the offset on the shell a little higher. You often see this type of black line appear when mesh intersections happen. I've seen it with hairs and other items that don't follow the morphs of the underlying figure correctly, usually the fix is as simple as scaling up slightly or setting shell offsets slightly higher.

It can also happen when there are displacement maps on the figure or HD Morphs that aren't being translated over to the grafts. I say this because it looks like there is vascularity just under the clavicle line and a lot of vascularity is achieved by either using displacement or morphs. Often if morphs it is using the HD morph tools Daz won't release to anyone other than their PAs to use, so there isn't much that can be done to fix it in that case as the HD morphs just won't copy over to the grafts (I think the only fix is somehow the creator of Diffeomorphic, which is used to copy figures from Daz Studio to Blender has gotten HD morphs and third part grafts to work in Blender, but getting a fix to work in Daz Studio isn't possible until the third party vendors have access to the HD toolbox)

Hi BrotherHades,

Thanks for the insight. disabled the vascularity (was a morph solution) and all the HD morphs I could find. Still, sadly hasn't got rid of the black lines. Disabled smoothing and subd just in case (didn't expect that to fix it).  Funny thing, I deleted Breastacular and GP. The lines are still there as you can see below. I'm gonna try reapplying the textures onto the character. Otherwise, I'm all out of ideas as to what is causing this, at least it doesn't appear to be Breastacular.

Huge shame about non PA creators not being able to access the tools for the HD morphs. Seems just typical of Daz to pull that kind of move. Handicaps anyone who won't give them a cut I presume...

If you have any other ideas to fix this I'm more than happy to hear them.

Thanks,

I

Originally Posted by: Thunder-3D

Originally Posted by: WhiskyPriest

Originally Posted by: BrotherHades

Try setting the offset on the shell a little higher. You often see this type of black line appear when mesh intersections happen. I've seen it with hairs and other items that don't follow the morphs of the underlying figure correctly, usually the fix is as simple as scaling up slightly or setting shell offsets slightly higher.

It can also happen when there are displacement maps on the figure or HD Morphs that aren't being translated over to the grafts. I say this because it looks like there is vascularity just under the clavicle line and a lot of vascularity is achieved by either using displacement or morphs. Often if morphs it is using the HD morph tools Daz won't release to anyone other than their PAs to use, so there isn't much that can be done to fix it in that case as the HD morphs just won't copy over to the grafts (I think the only fix is somehow the creator of Diffeomorphic, which is used to copy figures from Daz Studio to Blender has gotten HD morphs and third part grafts to work in Blender, but getting a fix to work in Daz Studio isn't possible until the third party vendors have access to the HD toolbox)

Hi BrotherHades,

Thanks for the insight. disabled the vascularity (was a morph solution) and all the HD morphs I could find. Still, sadly hasn't got rid of the black lines. Disabled smoothing and subd just in case (didn't expect that to fix it).  Funny thing, I deleted Breastacular and GP. The lines are still there as you can see below. I'm gonna try reapplying the textures onto the character. Otherwise, I'm all out of ideas as to what is causing this, at least it doesn't appear to be Breastacular.

Huge shame about non PA creators not being able to access the tools for the HD morphs. Seems just typical of Daz to pull that kind of move. Handicaps anyone who won't give them a cut I presume...

If you have any other ideas to fix this I'm more than happy to hear them.

Thanks,

I

 

Based on that image, those lines appear to be occurring at the connections of the UV spaces. I suspect it could be a shader issue in the character skin. The line across the shoulder is the seam between the arm UV and the torso/body UV, and the line could be caused by something in the refraction settings.  It could also be a mismatch in the displacement distances, if the materials are using displacement to create a high definition effect. If it's that, the arm or torso is literally being pulled up away from the adjoining UV space, creating a little "cliff" between them.

Can you tell me what character materials you're using? If I have the character I'll have a look.

Hi Thunder,

Have been using Kimm for Babina 8. 

Have been applying it using the iray smart content presets. Normal maps, High Translucency, Medium specular. Don't know if that helps at all?

I double-checked my UV maps in the surface tab. All the skin sections appear to be set to the default gen 8 UV.

thanks,

So I'm looking at the character mats, I tried applying every material option available in the character folder and don't see the UV lines. Jesaii usually does very clean materials, I'm not seeing anything that stands out as a problem in iray.

Have you tried re-applying the default Kimm materials to the character?

Have you saved and then restarted Studio and/or restart your computer?

What else, if anything, is still attached to the figure?

Hi all,

have been playing around with the figure and texture. Following your suggestions.

Loaded a base G8 character and Kimm textures. Was greeted by the below... after a quick render. Assume this means my textures got messed up at some point and I didn't notice?

re-downloaded & installed Kimm & g8 character. Hasn't fixed it sadly.

Opened up a couple of other G8F characters. These seams appear on all of them... Reinstalling the character mats doesn't appear to do anything. So I have no idea...

Have you ever seen anything like this before? The rez of the picture makes it hard to see on the below - lines are still there.

Hi, 

CPU: RYZEN 3700X

GPU: RTX TITAN

Updated to most recent studio drivers - think it was on the 20th - 472.12

the latest version of studio - 4.15.??

Will email you a copy of the scene file. Do you want the Daz3d log file as well? 

thanks, 

After testing, as best I can tell, Spectral Rendering was the culprit here.

The issue is not specific to Jessai, as I said before they're one of my favorite PA's and a LOT of people use Jessai's skin mats due to the beautiful, blemish free smoothness of them.

The issue was even more pronounced on Beatrix from Emrys, and Beatrix is my go-to character for a lot of testing because she's (IMO) drop dead gorgeous and a joy to work with.

I've never noticed this issue with Beatrix before so I suspected it was something other than the skin shader.

I was half right.

Both Jessai and Emrys (as well as MANY other PA's) use VERY low Transmitted and Scattering Measurement Distances, which gives you a "brighter" overall appearance of the skin material in low light. This is a GOOD thing. These low settings appear to be interacting negatively with the Spectral Rendering feature.

I have never used Spectral Rendering and frankly can't see any difference in quality when rendering in Iray with Spectral Rendering enabled, so I recommend switching it OFF to prevent conflicts with shader settings not just in character skin but any shader with these low settings could be affected.
 

Originally Posted by: Thunder-3D

After testing, as best I can tell, Spectral Rendering was the culprit here.

The issue is not specific to Jessai, as I said before they're one of my favorite PA's and a LOT of people use Jessai's skin mats due to the beautiful, blemish free smoothness of them.

The issue was even more pronounced on Beatrix from Emrys, and Beatrix is my go-to character for a lot of testing because she's (IMO) drop dead gorgeous and a joy to work with.

I've never noticed this issue with Beatrix before so I suspected it was something other than the skin shader.

I was half right.

Both Jessai and Emrys (as well as MANY other PA's) use VERY low Transmitted and Scattering Measurement Distances, which gives you a "brighter" overall appearance of the skin material in low light. This is a GOOD thing. These low settings appear to be interacting negatively with the Spectral Rendering feature.

I have never used Spectral Rendering and frankly can't see any difference in quality when rendering in Iray with Spectral Rendering enabled, so I recommend switching it OFF to prevent conflicts with shader settings not just in character skin but any shader with these low settings could be affected.
 

Nice catch!

Sorry, just noticed. A lot of vendors changed their names last year for whatever reason.

Fred Winkler / FW / FWArt / FWSA is now Emrys. Jessai used to be (I think) Silver.

They're two of my go-to PA's when I'm looking for a new character, though Mousso is quickly getting more space in my library as well :)

Just my opinion though. I think we have some amazingly talented character PA's here too :D

Edited by user Monday, September 27, 2021 4:15:03 PM(UTC)  | Reason: Not specified

This might be asked and answered but I am curious still.  Hopefully I am posting images of two G8Fs: one with Breastacular and one without.  Breastacular allows me to have collisions with the arms using the included hidden gloves; but I cannot have the detailed veins or nipples as they are morphs. . . . .Without Breastacular I am able to have vein morphs and detailed nipples but no collisions.  Any way to get the best of both worlds???

s_j_gregory attached the following image(s):