Show Us Your Iray Renders. Part III
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I know you do !
Personally, I always try to give credit if I put info from any one person in a tutorial. I would never do one for skin, though, I don't understand it well enough. ;p
Everyone borrows from someone else, even most of the information here comes from other places.
Tomtom, my approach has been to use a very high roughness low intensity gloss, to get lighting on the figure, and then a careful amount of top coat with a roughness around .4 or so, fresnel 1.33. Anything more gets oily-looking.
I also use medium gray (157 or so value) for gloss color and a lighter gray (192) for top coat. Real stuff is rarely that shiny.
Good bump and normal maps can also help make a skin look more natural.
Here's an example:
I tried adjusting the top coat and just about everything else first, but I want some parts of the skin, in particular raised parts of the skin, to be more glossy than the rest of the body, which is easiest to achieve through a "glossiness map". The level of glossiness can then be adjusted through glossy roughness. The render I posted here has "glossy layered weight" 1.0, "glossy reflectivity" 0.7 and "glossy roughness" 0.4, but after making that render I changed "glossy roughness" to 0.45, a small adjustment but enough to make it look better. With a map like that all it takes to adjust glossiness from doused in baby oil to dry skin is adjusting glossy roughness, less makes it look oily, more makes it look dry.
I would consider putting the map in either glossy layered weight or glossy color. I'm not sure weight in roughness would work great.
I'd also suggest trying using specular/glossiness, not metal-based PBR.
The glossy roughness I had was about .7 (or Glossiness .3).
You can also change top coat weight for variation, too.
The map is in glossy color, but it only tells Iray which parts should be more or less glossy than other parts (the lighter the colour in the map the more gloss relative to an average value), not how glossy they should be, that's a part of the equation I use "glossy roughness" for.
For this one I used SSS sky haze but left Depth of Field off. Gives it more of a painterly look, I think.
I like it, DOF would make it minder interesting here, the SSS sky haze working here as well , giving it atmosphere in overall
I've completed the Ghost-shader. Well, as good as possible.
How can I make it available here for free? Is anyone interested in it at all? Or should I just post the settings?
Also, one trick to get rid of the "shining eyes&mouth;" I've found is the use of Geoshells. Just create a geoshell for the ghost, and dial it to a very slight minus, so it's actually right below the item's surface. Then, apply the ghost shader to the geoshell, too, and hide internal things like teeth, etc.
Also, if you are using hair, or anything that has transparencies, apply the transparency map to Cutout Opacity (set to 1). This is what I did for the mane, fesslocks and tail.
(Blergh... just now I realize that the lady's fingers are poked into her hip. There goes another night of renderings.... :roll: )
EDIT: Okay... for those who are interested, I have uploaded the shader to sharecg:
http://www.sharecg.com/v/80867/browse/7/Material-and-Shader/DS-4.8-Iray-Ghost-Shader
..wow, cool. Thank you very much.
Thanks much appreciated
Someone put away his razor :-)
(and got out the Coppertone hehe)
...there's always "Nair" :cheese:
I think he's quite happy going "Unshaven" (hint hint)
OMG.. WOOF and YUM!
Wow. Strong. I've been watching this thread and found you to be massively helpful, so know I must have done something very wrong. In my defence, the first set of settings which improved my renders massively I shared before being a member here I clearly stated " its based hugely on settings from Bohemian3 over on Daz forums (thanks man)". The second had Lyoness's tweaks added to them which I credited. The third set I honestly couldn't find the source - its in one of these three threads I'm sure, but I'll sure as hell make sure I do now. I've only shared 3 so only have a 33% plagarism score as far as I can see. :)
*I've searched and found that they were mainly settings in the last thread where you gave advice to ACross and have updated the image to reflect this. Apologies for any offence caused.
And thanks to the others who have welcomed me, much appreciated :)
...well, some bad news for those waiting on the 8GB GTX980 TI, Apparently, due to production issues, the planned release has been moved back until sometime in 2016 (no specific quarter mentioned). This is the third schedule slip since it was announced last year.
Also, unlike the Titan X which saw only a modest price increase over the Titan Black,, the projected price for the 980TI is to be somewhere in the 800$ - 1,000$ range. For comparison, the 12 GB Titan X is currently available through Newegg for 1049.99 USD.
So it's either go with 4GB or pony up the extra 500$ for a Titan X (Still much more affordable than a Quadro K5200 or K6000).
No problem AJ , thanks and sorry for barking at ya ! lol
I am going for Titan X next month the evga superclocked version what is so much faster than the $999 version
you need also minimal 16GB of System RAM to use the 12GB of VRAM that it offer .
BTW anybody beside Alex noticed that when using caustic in the new build it crash every time you try to render ? I put just genesis in the scene .. and puff DS is gone ...... with simple primitives it works as well just not with genesis :(
Same here.
I have made several renders with the latest build (4.8.0.55) with Genesis 2F and "caustic sampler=on" (for the eyes), with no crashes. Such as the test render below, testing the effect of glossiness maps.
EDIT: There were no crashes when I lit the scene with "Dome only" (with HDRi) or "Sun & Sky only", but when I tried to light the scene with two emissive spheres and nothing else, it crashed...
Crashes here even with Dome Only Settings and no other lighting in the scene on 2 different systems.
Crashes here even with Dome Only Settings and no other lighting in the scene on 2 different systems.
I'm trying to reproduce the crash, but with no luck. The only thing I haven't tried to reproduce yet is using Iray preview in the auxiliary viewport, which I did when I had the crash but normally don't do since it's an old computer I'm using.
I'm trying to reproduce the crash, but with no luck. The only thing I haven't tried to reproduce yet is using Iray preview in the auxiliary viewport, which I did when I had the crash but normally don't do since it's an old computer I'm using.
Crashes with :
- No headlamp nor light in the scene
Then Render settings
All default except :
Environment
- Dome only
- Infinite Sphere
- Environment Intensity 1.2
- Pixar HDRI set at 2.0
- Dome rotation 150
All other settings default
When I use the IRay preview Studio crashes as soon as I tick the caustic sampler button.
When using only texture shading preview. Studio will compile the scene but crashes as soon it hits the rendering state.
I'm trying to reproduce the crash, but with no luck. The only thing I haven't tried to reproduce yet is using Iray preview in the auxiliary viewport, which I did when I had the crash but normally don't do since it's an old computer I'm using.
Crashes with :
- No headlamp nor light in the scene
Then Render settings
All default except :
Environment
- Dome only
- Infinite Sphere
- Environment Intensity 1.2
- Pixar HDRI set at 2.0
- Dome rotation 150
All other settings default
When I use the IRay preview Studio crashes as soon as I tick the caustic sampler button.
When using only texture shading preview. Studio will compile the scene but crashes as soon it hits the rendering state.
When I installed the latest beta I noticed that it also installed support for "MS Visual C++ 2005", which it apparently needs. So if I were you I'd try reinstalling the beta, with a fresh download, on one machine, and see if that solves the problem. Or at least check that I had those support files on my system.
PS. Installing that kind of suport files on your system might require being logged in as administrator when doing it.
OK I tried something else and came to the same conclusion as before this came up in this thread.
I used a completely new scene with a fresh Genesis 2 character with the IRay uber shader applied to all surfaces. No headlamps nor light in the scene. Same Iray settings as before. Then caustics work in preview and the scene will render. I tested with Dome only, dome and scene with and without headlamp.
So it is something done on the character that makes Studio crash. I suspect it are the eyes or the hair. I was too lazy to go for a full analysis on what was going on. But since Cath mentioned she had the same problem I sprang in the boat :) I'll do some more testing.
I'll come back to this post if I find the culprit.
Wow. Strong. I've been watching this thread and found you to be massively helpful, so know I must have done something very wrong. In my defence, the first set of settings which improved my renders massively I shared before being a member here I clearly stated " its based hugely on settings from Bohemian3 over on Daz forums (thanks man)". The second had Lyoness's tweaks added to them which I credited. The third set I honestly couldn't find the source - its in one of these three threads I'm sure, but I'll sure as hell make sure I do now. I've only shared 3 so only have a 33% plagarism score as far as I can see. :)
*I've searched and found that they were mainly settings in the last thread where you gave advice to ACross and have updated the image to reflect this. Apologies for any offence caused.
And thanks to the others who have welcomed me, much appreciated :)
For the record, my comment was only meant as a compliment. You do very good work.
I was getting crashes with the previous version with the caustic sampler, but I also had an SSS haze cube in the scene and I was using a large 120mb HDRI, could've been some combination of those things. I don't have that particular scene file anymore but I can try to recreate it.
Well after some more testing IMO caustics are too unstable to be usable on a character.
With default IRay render settings and headlamp on 'Auto' I took a Genesis 2 male. Then I applied the Jarek IRay default body and nothing else. The IRay preview was OK. then I used 1 body morph (not Jarek's) the preview was still ok. Then a second body morph (still not Jarek's) and the preview made Studio crash. In a previous test Studio crashed after the fifth or sixth body morph.
I don't know if that product has been tested with caustics on.
I give up. I can't determine what is going wrong without extensive testing. I'll open a ticket if I can remember how one does that :)