Daz 3D is part of 
Connect
DAZ Productions, Inc.
7533 S Center View Ct #4664
West Jordan, UT 84084
Licensing Agreement | Terms of Service | Privacy Policy | EULA
© 2025 Daz Productions Inc. All Rights Reserved.
Comments
I only have one standard distant light in the scene so far
Yesterday I couldn't get a scene to render no matter what I did. I had a couple of Photometric Lights and a couple of Mesh Lights.
The only things that would illuminate were the mesh lights. When I removed then and had just the Photometric Lights, the render would take a couple of seconds and then just be a black box. It was like the Photometric Lights were turned off.
When I changed Environment Mode to Scene Only, all the lights started functioning properly. See attached image.
Update to the newest drivers (2-10-15). This fixed the problem on my older machine
Yesterday I couldn't get a scene to render no matter what I did. I had a couple of Photometric Lights and a couple of Mesh Lights.
The only things that would illuminate were the mesh lights. When I removed then and had just the Photometric Lights, the render would take a couple of seconds and then just be a black box. It was like the Photometric Lights were turned off.
When I changed Environment Mode to Scene Only, all the lights started functioning properly. See attached image.Dome and scene gives you both. (So you can have an HDRI or Sun/Sky, plus lights in your scene.)
Thanks, I will try that when I get home.
I thought I did that but had no luck. I stepped through each Environment Mode until I hit on one that worked.
The same thing happend to me.
Have you tried rendering the sample scene? It is in: My Daz 3D Library -> Props -> Daz Material Ball.
If Iray GPU doesn't render that scene then your video card is likely not compatible with Iray. The scene should render in CPU mode but it will render much slowly.
edited for clarity
adegner.deviantart.com 7680 x 4800 full GPU
In your content library, daz studio formats, under render presets / iray there should be Sun Dial Set. Load it, go to scene tab to expand its selections (it haves 4 parts). Select the Sun Chain and in parameters tab adjust elevation and azimuth.
I was wondering what the sun dial is used for. I thought it was supposed to be a prop of a clock. :red:
If you're having trouble getting specular highlights, check if you have a spec map texture in the Top Coat Color. This will make the Top Coat Color far too dark. Remove the spec map so that Top Coat Color is white, and adjust Top Coat Weight and Top Coat Roughness to taste.
Nicely done Zev0 :)
Kat
I'm looking at the Luminance Units cd/m^2 which from what I've read has a power level of 1/683 watt. So if you have a Luminance set of 5000 it would be about a 7 Watt lightbulb?
I'm still confused by weight and roughness to be honest and what it is they do exactly....
Greetings,
I can't say as I'm particularly any better, but Sickleyield put up a list of them and their meanings which might help some.-- Morgan
applied rubber shaders to the tires keeping the texture maps. Same with the chrome, brushed aluminum. Solid glass for the windshield and glass thickness for the headlights. Gotta love Iray
I'm still confused by weight and roughness to be honest and what it is they do exactly....
Lol so am I:) All I know is with those two sliders you can get higher spec or even a lubed with oil appearance:)
Lol so am I:) All I know is with those two sliders you can get higher spec or even a lubed with oil appearance:)
You could also use LIE to lighten the specular map without completely removing it - add a new layer in LIE, place it under the specular map and set it to solid white. Then select the specular map layer, set its blend mode to multiplicative, and adjust opacity to lighten the effect.
Just trying to figure this out :-)
Hmm.......even changing the levels (high contrast) of the spec map hardly makes a difference when its plugged in..will have to do more research........
Weight - how much "weight" or consideration or percentage that property is given.
Roughness - the higher numbers increase the "roughness" of the surface to the light reflection is less sharp.
Those are described in the Docs :)
Iray Uber Shader:
Iray Uber Shader Documentation
Kat
Does not read:) Only watches youtube vids:) Lol, I'll go through the docs again:)
Got it installed and all and have found most things, not that I know what to do about 'em. I couldn't find the sun thing, but found the answer on the previous page (render settings folder) so that'll be next. I even figured out the backdrop and how to get the effects of a skydome without actually having one in the scene.
IRay is much faster than I thought it would be. Of course there's nothing fancy here not even a single reflection so I may take that back soonly. This pic is washed out without enough contrast and doesn't look real. I had rendered this scene with 3Delight with an Uber plus one distant light this morning in anticipation and it looks much better.
This is just the skylight and one photometric? spot. The 3Delight/Uber/Dist one took 2 1/2 minutes, the Iray 5. Only used CPU. I've got 144 CUDAS but only 1gig of non-shared vram so I didn't check the box for my video card (it wasn't checked by default which was probably trying to tell me something.)
It's like there's too much light in the pic and I don't know the new vocabulary well enough to figure out what to do about it.
By the way the upper right around the viewport is very crowded with tiny arrows and menus. LOL
...unfortunately, I had already deleted the original lights (all AoA Advanced lights) beforehand as I thought that the sun was part of the supplied dome (kind of like old LDP2 or any of the UE outdoor light sets) so I could just rotate it using the dome controls. However, that didn't work Did finally get it close to where I wanted after messing around for a while with the Day, hour, and time zone controls.
What would be nice is if they included a control like Carrara or Bryce has for positioning the sun and sky. Would be so much simpler than having to look up the coordinates and +/- to GMT for the location you are using (in this case Zagreb, Croatia).
...what about UberVolume?
...when I use Dome/Scene though the scene renders dark. when I switch to sun - sky it renders correctly.
In your content library, daz studio formats, under render presets / iray there should be Sun Dial Set. Load it, go to scene tab to expand its selections (it haves 4 parts). Select the Sun Chain and in parameters tab adjust elevation and azimuth.
...thank you. I didn't see there was also a render presets in the content tab.
...I'm the opposite. My retention with printed matter is far better than video.
Could someone please explain how you get an interior scene with one emitter light to not be completely black? Do you always have to lower the Exposure value down to 0 or lower from it's default of 13? If I do that, the light emitting object becomes completely white. I expected the Exposure Value to use a base of 0 and we would make small adjustments like with a camera (+1, -1, etc). Why is 13 the default?
Every time I think I'm making progress, it turns out I'm not. Using the sun gives easy and realistic results, but otherwise lights in Iray seem to have almost no strength at all.
Any preset values would be very helpful, I just want something accurate to use as reference and a starting point.
Looks like my Video Card is too old to handle Iray. Each render I've attempted causes the VC to crash.
Either that or I'm just not getting the right settings.
What video card and OS are you using?