Show Us Your Iray Renders. Part V
This discussion has been closed.
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
© 2026 Daz Productions Inc. All Rights Reserved.
Comments
A lot of people moan about Iray, but the fact is, it can really make life easier in some situations. Now shaping hair is another animal altogether. Just playing around with Renee and Stonemason's beautiful Venetia set piece.
Something a little on the abstract side. The tentacles and surroundings use my WTP shaders.
That's actually very impressive. Where can one find these shaders?
In my sig. ;) ShareCG
There are shaders for brushed metals, some skin shaders (there are problems with a homogeneous skin, but can be useful for a number of cases), water droplet/frost/snow layers, and some funky refraction shaders (such as the above, which is just the default WTP Refraction shader)
All WTP shaders, except for the gold and glass bits.
Will - using your procedural shaders in a couple real world before/after examples (replacing out of the box shaders) would be interesting. Not only would it be interesting to see the comparison visually, but if you used GPU-Z while rendering both, you could compare the amount of VRAM used. Not trying to make work for you, but just a thought.
- Greg
Did a textured version of The Doll. Interestingly, the memory load was only a little higher (2 MB -> 2.2 MB)
I'll have to do a test of something with gobs of textures, like one of Jack Tomalin's halls.
I am stripping me floor and can't wait. It will look better than that one I hope! Nice render.
OK, here is a render I entered in the It's Raining Men contest, as you might guess from the blantant copying of the It's Raining Men music video theme, I'm not feeling any original inspiration.
https://www.flickr.com/photos/37909888@N05/31126673865/in/dateposted-public/
https://www.flickr.com/photos/37909888@N05/30971631241/in/dateposted-public/
Thanks for the shaders Timmins!
Yes, it's this, not that complicated of a scene. Now on a another render, 16 hours in at 16%. IRay is RIDICULOUS on a Mac!
Save
Can someone tell me why every render takes FOREVER on my Mac?I know I don't have an NVIDIA card and can't on a Mac, but I'm now rendering another scene that was originally for Poser that would have rendered in about 10-15 minutes in Poser but I wanted to change the shaders to Iray and another scene taking forever... Any advice about how to speed things up???
What are your Render settings, resolution, lights and is everything using Iray materials?
...that just does not sound right given those hardware specs. I've had some Iray renders take long but not that long and my system has an old 2.8 GHz i7 930 with 12 GB of physical memory. Check your render settings, particularly Advanced to make sure only your CPU is selected under "Photoreal" and OptiX acceleration is turned off.
Also check the following settings
Max Path Length: default should be -1
Architectural Sampler (should be "off")
Caustic Sampler (should be "off")
Instancing optimisation set to "speed"
Rendering Quality (Default should be 1.00)
Noise Filter (should be "off")
Also are you using emissive or Photometric lights? The former can slow down render time.
If that one is set to between 6 and 12 it should SHORTEN the render time...maybe by a large amount, but at least by some. (6 is the bare minimum needed, 8 is a more practical limit).
What is in the scene, and how are you lighting it? Is it an enclosed space? Are there large areas that are fairly shiny? Are there very dark areas?
Yes to the above, except no emmissive lights, not sure about photometric ones, what is the difference between photometric and regular lights? I'm attaching more settings. I bumped the time way up because the default 2 hours left me with barely an image. The image I posted above of the Rural Chateau at 2 days and 7 hours was only 17% converged.
And if anyone could recommend an inexpensive PC and an NVIDIA card that would give me the biggest bang for the buck, that would be appreciated too... (I don't know how to or want to build my own, but I could have PC Connection or Fry's do it but I'm low on funds...) Thanks.
This is the first render that took almost 3 days. I finally stopped it at I think 18% converged but it was usable... Now trying out a Poser RDNA scene that I added Iray Uber to and specific materials on a few objects. I stopped it to check the render settings but it was at 16% converged for over 16 hours... All the setting are in above post. Thanks.
Multiple glass interreflections.....that can slow any raytracing to a crawl. Depending on if the figure/hair/clothing uses SSS, with the multiple reflections (even if they aren't perceptible) could slow Iray to a snail's pace. Try hiding the window glass and see if it speeds up. If so, you'll know it's the interreflections. If so, adjust the Max Path Length to a small number (6 to 12) and try again. Also try hiding the figure and see how that affects the speed. If the clothes render at a good speed, it's probably the skin SSS. If it's still slow, it's probably all the anisotropic stuff on the clothing materials. Also try hiding the hair. Transmapped hair over glass reflections and such is a recipe for slowdowns.....
Process of elimination. Remove parts and see if it speeds up. Means you'll have to try several times, but you should be able to isolate what the problem is pretty quickly. Once you know WHAT is causing the slowdown, THEN we can give advice on how to fix it.
@wonderland That's a beautiful image, for only getting to 17%
Thanks, I did end up doing a lot of postwork. The thing is, I want reflections and all the bells and whistles. If I didn't,I wouldn't use Iray...
That's weird, but I also feel that my renders tend to take an inordinate amount of time and I use a PC. Thing is what takes a long time and a short time seems to be completely arbitrary. Simple scenes sometimes take forever and then a scene that I'd expect would be most of the day will render in hours. Basically I just start them at night and if they aren't finished in the morning before I go to work I just let them run.
F
First and formost...you do not have enough light in your scene. Adjusting shutter speed does nothing to increase the amount of light. To converge quickly Iray needs a fair amount of light. Without that, it will take forever.
I prefer to use tone mapping/exposure values to prevent over exposure as opposed to trying to correct for low light levels.
Bump it back up to the default value of 128 and adjust your light levels much higher. That should show a considerable speed boost.
Secondly, EVERYTHING needs to be Iray materials for maximum performance.
Don't feel bad, I let me latest posted render run 12 hours and it didn't even get to 1% or exceed 300 iterations (or maybe it was less than 500 iterations).
With iRay - it's always something - scene needs more light, scene needs less reflections, and so on and so on...til finally you throw your hands up and say how about rendering a matte square of black posterboard. I had my scene with only 4 characters, the 55 car, and the street set cause me to have to restart DAZ Studio multiple times to restart the render because sometimes the render would corrupt the reflections off the character's skin from metallic objects.
I will buy a new PC but likely not til next autumn after the new nVidia and ATI video cards have a chance to become more reasonably priced and the newly open source ATI renderer has a chance for more wide spread adoption.
By the way, Unity willl be getting the Otoy Octane renderer and it will be free to Unity Free customers I hear. Unity is making a push to be not just a game engine but an animation engine.
That said, I hope DAZ 3D is working on a plugin for Unity to use DAZ Studio format products in Unity natively.
I´ a bit puzzled with something... What determines the progress bar in Iray? I set the max samples and max time to absurd huge amounts (way beyond the limit) to ensure it renders like forever but it stills seems to know when a render should be finished. Wasn` it supossed to be an endless rendering time engine?
I don't follow that since I set high limits to let it render until I am pleased
That is a gorgeous image!
Cannot say about the inexpensive PC cause mine was not. But I can recommend a 980TI.
To get it to run until you cancel you are supposed to set it to 100% converged because it will never converge is what i was told.
I have had my percentage rendered go from 1% back to 0%, eg on my latest render. I am using the latest public beta though, maybe it has a bug.
What I would like is if we could adjust the render time after we started. Say 12 hours maximum but it still isn't converged enough to my liking so I add on 12 hours sometime before the current 12 hours is finished.
You can do it, but it`s a bit hidden.
In the render window there is a tiny triangle in the left. It will show the render settings and you can add more time. :)