Render Speeds?
rhye_7b205b2b74
Posts: 80
Okay I am not totally new to Daz3d as I use Poser, I understand everything within Daz3d regarding setting up a scene (lights elude here as in Poser I use the least amount possible) but what frantically irritates me about Daz3d is the rendering.
I have searched online among the forums here and no one seems to know how to reduce the render time. On 3delight pre daz 4.8 I actually got the rendering down to 5 minutes but since the upgrade with Iray now an option it has gone to pot with rendering times in the hours, I have tried Iray and find it to be the most irritating rendering machine ever, I have never completed a render as after 30 mins it is still only 30% and what I see is worse the quick render portal it is also sending my 6g card into overdrive,
I would love to use Daz3d and I am a platinum member, but unless I find some quicker options on rendering I'll have to give up on it.
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Comments
Well, then switch back to 3Delight. Iray is slower. Always.
It would be helpful if you could post an example of the scene you want to render faster, there are too many variables without knowing what you are trying to render. As a side note, many of the G8 characters use the dual lobed spcecular shader, which can increase render times quite a bit.
But with that said, the first attached is an old test render I did with V8 in less than 10 min. with a GTX 970M (laptop). However, the second attached render took a little over 6 hours due to the complexity of the light set up, and the general low light of the image. For top quality final renders (typically around 2,000x2,400) I usually anticipate a 2-4 hour render time. Quality takes time, regardless what render engine you use. Yes, some are faster than others, and "cheats" can be used to get acceptable quality faster, but Iray is pretty much a brute force path tracer, which will always be slower than carefully set up scenes and shaders using biased render engines (like firefly).
Thanks for the replies!
I like to create full scenes much like the second one you posted DustRider, but I never got too heavy on lights,
What were the settings you used for the First, that would be a great start for me to fiddle around with :)
That is the problem since Iray was added to the menu, 3Delight now has more parameters than it used to any tutorials I find are of the old Daz4.6 or earlier ?
Yea you won't find much "official" documentation about 3DL, need to ask on the forums. There are a number of threads if you're interested;)
https://www.daz3d.com/forums/discussion/303011/in-depth-tutorial-for-squeezing-the-best-of-3delight/p1
https://www.daz3d.com/forums/discussion/55128/3delight-laboratory-thread-tips-questions-experiments/p1
https://www.daz3d.com/forums/discussion/280441/awe-shading-kit-for-daz-studio-and-3delight-commercial/p1
https://www.daz3d.com/forums/discussion/277581/awe-surface-shader-a-new-physically-plausible-shader-for-daz-studio-and-3delight/p1
If you want to make more complex scenes with a high level of realism you may want to look into aweSurface and scripted pathtracing for 3DL. Compared to Iray on CPU, rendertimes are roughly 4 times faster.
There's also the art forum section, with these 3DL threads:
https://www.daz3d.com/forums/discussion/130611/show-us-your-3delight-renders/p1
https://www.daz3d.com/forums/discussion/284366/the-official-awesurface-test-track/p1
The information Sven gave you is really good if you want to use 3Delight. aweSurface seems to be a huge improvement for getting great results fast with 3Delight.
The lighting in the first image in my last post was ultra simple. Just the default Iray HDRI, rotated about 25 degrees, and a spotlight on the right side of the image, and slightly behind her.
Rendering "speed" in Iray is highly dependent on how well the scene is lit, and the materials used. SSS, reflection, refraction, very glossy materials will all increase render times. Iray renders by path tracing, so any materials that require more path traces of bounced light to resolve (clear up), will take longer to render. The first attached image is a prime example ot that. It has a lot of reflective surfaces, reflective surfaces under semi-transparent reflective surfaces, and lot of light emitters (from the prop used, plus two spot lights, and an hdri), dual lobed specular shaders on the character, translucent hair, etc. It took 28 hours to clean up, which is unusually long, but a perfect example of how much some shaders can effect the time needed to render. The second image on the other hand, which looks very similar to the first, only took about 2.5 hours to render. But there are very few light emitters in the scene, few reflective surfaces, and lit with the default Iray HDRI (rotated to 25 degrees). I think these are outstanding examples how shaders and lights can impact Iray renders (something we all knew about with Firefly and 3Delight, but easily forget the same principles apply with Iray. However, poor lighting is a new consideration for render speed (i.e. decent primary light getting into under-lit areas, and not solely relying on bounced light), so that is always important to consider when lighting a scene.
Sorry, but I don't see any more parameters than it had before. Advanced parameters are now more visible than they have been but they did exist before.
wow thanks Dust for the help at last I have something to get me started :)
and Sven those links? you saved me a lot of frustrating search time
Ascania upgrades on software always throw me out, I loose all my settings which in this case I did, and your right they are all there just (palms head) everything that used to be on my old General Settings in 3Delight or so I thought until I realised the picture settings people post have just highlighted those sampling gamma etc so it shows up as the general settings, I'm rambling now, but thanks )
one last thing where do I get the freebie RaytracerDraft script?
its okay I found it :)