Iray conversion of older gloves causing strange lines

Steven-V

I have been struggling for months now with a problem and I thought maybe folks here would have some insights.

First off, I am using the superhero suit for G2F and V6 by Smay (http://www.daz3d.com/super-hero-suit-for-genesis-2-and-v6). I'm only using the gloves, actually, and the rest of the suit is cobbled together from other parts (see the picture in my sig).

Anyway, these gloves are basically flat as modeled geometrically in 3D, and then rely on normal and displacement maps to get the wrinkles and folds. They are done with older 3DeLight shaders. I auto-converted them to iRay using the DAZ Uber Iray shaders, and the gloves look mostly fine, except that I get these annoying black lines across the wrists or on the fingers, depending on what I do with them. If I take all the defaults for the shader conversion, then I get displacement and normal maps, but no bump. That's because it's how the original worked. When doing this, the hand and fingers are fine but I get lines on the wrist, like so:

Note, the above picture is best-case, after I tweaked the min and max disp values from the default (which I think was -0.1 and +0.3, tweaked it is something like +0.14 and +0.28).

Now, I can get rid of the wrist problem by removing the displacement map from the displacement channel, but then the gloves look very flat. Additionally, if I do that, I get the same sort of black lines, but now on the fingers instead. I tried fixing this by putting the displacement map in the bump map channel, but no matter how much bump I try, from 3.0 strength to 50 and up, although the gloves get fatter and bumpier, the lines remain, like so (this is a pic with bump strength set to 3).

So... I am wondering, does anyone have any advice on how to fix these gloves up so that they retain the wrinkles and so on, but don't produce the black lines? I have tried a whole bunch of different variations, using bump and displacement together, using neither, etc, but I can't get the gloves back to looking like they should.

Frankly I woudl just give up and go with something that was natively designed for iRay but I have not found any gloves that are stylistically close to these (short, over-the-wrist, with enclosed fingers) on the shop... all of them are either short but fingerless or go up over the elbow, and I don't want either style for my character.

Thanks for any help you can provide.

Richard Haseltine

Have you applied covnerting them to SubD? That may break them entirely, but if not it may help. Edit>Figure>Geometry>Convert to SubD

SpottedKitty

Considering how Iray tends to break 3Delight-style displacement, you might try swapping out the Displacement maps into the Bump slots. Don't forget to check if the Displacement values might need to be copied across to the Bump values.

Steven-V

SpottedKitty said:

Considering how Iray tends to break 3Delight-style displacement, you might try swapping out the Displacement maps into the Bump slots. Don't forget to check if the Displacement values might need to be copied across to the Bump values.

Yeah the 2nd picture is with the displacement map swapped into the bump slot. I guess I was not clear in the first post. So it fixes one line problem but causes another for some reason.

I will try converting to subD.

UPDATE: Nope, DAZ won't let me. It says the object myst be capable of conversion or not already be converted. I tried putting a fresh pair of the gloves on her just in case something wonky had happened the last time I converted to iRay and got the same error.

I am now trying some other things but so far, I can't get rid of the lines on the entire glove. I can change where the black lines appear by changing from displacement to bump ro vice versa but cannot make them go away entirely.

hphoenix

What figure base are you using the gloves on?  Since it is a G2F/V6 based item, there may be some other issues than just he shader coming into play......

 

Steven-V

hphoenix said:

What figure base are you using the gloves on?  Since it is a G2F/V6 based item, there may be some other issues than just he shader coming into play......

 

It's being autofitted to G3F. I suppose that could be the issue... although I am not sure why.

hphoenix

Steven-V said:

hphoenix said:

What figure base are you using the gloves on?  Since it is a G2F/V6 based item, there may be some other issues than just he shader coming into play......

 

It's being autofitted to G3F. I suppose that could be the issue... although I am not sure why.

Try it on G2F, see if the same shaders show the issue.  If not, then it's the mesh fitting causing some kind of distortion (either of geometry or of shader results).

 

Steven-V

It happens some on G2F but not as much and it's fairly easy to correct with a slight push modifier. This does not work when fitted to G3F. So it seems to be something to do with the auto fit... I guess.