Show Us Your Iray Renders. Part III
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The reason I go bigger with pixels is to shrink the image later in order to over-sample the light going to the camera lens.
This cuts the render time in general because it focuses the engine on the most productive period in the middle of the distribution, and less on the tails. You don't have to go to 95% convergence on a bigger image if your intent is a smaller image size.Okay thanks for clearing that up for me :)
WOW....very nicely made clothing and effects. Looked at the images full size, and the detail is very impressive.
:-)
Earlier in the thread there was some discussion of the Nvidia GTX 980 ti graphics card.
The non disclosure agreements are ended, and the reviews and price are out. It is an absolute storming bargain. $649 (£549) for almost the whole GTX Titan X performance. Essentially, the double amount of VRAM on the Titan X is the only significant benefit.
For Iray users that VRAM difference is important (and will become more important as the DAZ models become more complex), but for gamers and the like, Nvidia have just rendered the Titan X irrelevant. This may bring price reductions (the standard GTX 980 is already reduced). Good times for buyers.
http://www.anandtech.com/show/9306/the-nvidia-geforce-gtx-980-ti-review
.
If I were in the market for that price range, then the Titan X seems super amazing & I'd hope for price reductions. My gaming time has reduced considerably since I started messing around with Daz, so I know which one I'd hold out for, myself.
Of course, the actual cost to me for such a video card is a couple orders of magnitude higher after you factor in the assets lost following the divorce.
"YOU... BOUGHT... WHAT?!!"
Can anyone post how long their iray renders were going? I've had one render going for 14 hours... AND OMG IT JUST STOPPED.
No, really though... I had no idea it was going to stop, and it's no where near ready to post!! I forgot to change the Max Seconds... If I set that to 0, it will keep rendering unbiased, right? It won't stop until I stop it?
Ugh, this is very disappointing. Anyway, this is the render... shouldn't it look clearer than this after 14 hours? :(
I've read here and there that the more lights you add to a scene the faster the iRay engine works. Also make sure you have under the Render Settings> Advanced tab the OptiX Prime Acceleration checked marked as that also speeds things up. Not had a render that's taken longer than a few minutes so far. But I also don't have any folliage in my test scenes...
My render on the last page was 4 hours-ish. What size are you rendering at and what are you using for lighting? Iray is pretty variable when it comes to render times. But Something I have noticed, scenes where the lighting is mostly direct I've had finished renders that took under an hour, if the lighting is mostly indirect it takes a lot longer (apparently the architectural sampler in render settings helps with this, but I haven't tried it yet)
Even unfinished I really like your render BTW. The dappled lighting is super pretty
Thank you, I will try those suggestions RAMWolff!
And I also realized DAZ has been rendering with the CPU... ugh ~_~ I have a GeForce GTX 960 card, why I wonder wasn't it using that to render? >.>
Kamion, it's 1500 by 1200 or something~ And yes, I wanted her in shade, so it is indirect lighting except for the rim light, which is the only light I have in the scene.
If its still super slow even with the graphics card, I would recommend cheating a bit. Keep the rim as your main light but add in a nice big soft fill light on the left to simulate some of the bounce.
By a fill light, you mean use a distant light, right? Thanks for the suggestion.
Also, I just checked both my CPU and my NVIDIA card to do the render, since I don't know how it choses, and it just crashed DAZ on me (Well, my entire screen flickered black twice, then I got a message saying it crashed and recovered) ~_~ I also tried again with just my NVIDIA card, and it crashed, again. I JUST bought this card about 3 months ago... ~_~ There's no way there is something wrong with it :(
My lose understanding of how the lighting works is this.. Light bounces from a light source directly to the objects to be rendered don't need as much calculation as indirect lights do. I want to say that the indirect bounces are caluclated 2 to 1 but I'm pretty fuzzy on that part. At any rate light bouncing directly at the object speeds things up where loads of bounces that are not directly from the light slow things down.
Not a distant light they're super bright just a spotlight but set the geometry to rectangle and scale up the size to something like 100x100, also set the spread angle up higher. It looks a lot there's something there reflecting the scene's light back, but since its actually emitting its own light it's much less noisy.
I think the question people always ask at this point is "are your drivers up to date?" And the other would be how hot is your card getting. Mind you that card should be more than sufficient to handle most scenes (said the girl with the same card).
Drivers are definitely up to date. Oddly, I bought this card because my last NVIDIA card did the same crashing issues... Now I just don't know anymore. ~_~
I just saw it from NVIDIA announcement what a beast .. sadly 6 GB is not tempting , I ordered 2 x Titan X 12GB
and the benefit ? 256 more cores in my case will be 512
so I can render in DS and use another on other GPU usable programs on the same time or in case of animation run 2 DS programs rendering different scenes .. double work will be done
for gamers I agree it is a good deal, but for rendering ( not just DS ) more video memory is better and of course each extra core counts
OptiX Prime Acceleration on or off did not increasing decrease my render time at all I checked .. but when set off the Interactive mode did not rendered at all so .. what is the magic about people talk .. no difference at all when rendering with photoreal
Aww thanks for sharing .. I like the young man mutton chops so fine as he is haha
great work !
First, three things affect when the render stops on it's own: Max Samples, Max Time, and Rendering Converged Ratio. Setting Max Time to 0 will allow the image to render until it hits Max Samples or Rendering Converged Ratio. I'm a stickler for quality, so my settings are always at 15000 Max Samples, 0 Max Time and 100% Rendering Converged Ratio. (I'm happy to end it sooner, but as I let these things render while I sleep, I figure it won't hurt to if it goes above 95%, especially as I have a penchant for dark images.)
Second, I only have integrated video on my computer so all my renders are CPU only. How long it takes is dependent on the complexity of the image. Most of my renders take from about 12 hours for simpler scenes up to four days for more complex scenes. Remember, complexity isn't just in the number of items in the scene. The hair for my avatar is pretty complex all by itself. And I think I read somewhere on the forums that using a lot of displacement also increases the render time.
Anyway, There are so many variables that affect the length of time to render an image, it's pretty hard to say what is "long."
Oh, Lord. I can so relate...
lol
My first Iray render.
I used the following:
Victoria 6
Victoria 6 HD Add-On
IG Iray Essentials - Victoria 6 & Michael 6
Alyssa Hair for Genesis 2 Female(s)
Chloe Dress for Genesis 2 Female(s)
InaneGlory's Photo Studio - Point and Shoot Iray using PaS2 light setup 3pt Rim Right Iray
DMs Sensual V6 - I standing pose 05_F
I used the V6 Anna skin from the HD added on for Victoria 6 HD with the skin materials from InaneGlory. The Ayssa hair comes with Iray material, which I used. The Chloe dress does not come with Iray material, although the promo images indicate they were rendered in Iray. I just use the 3Delight material and hoped for the best in auto translation.
Several points about the Iray render:
- I set the "Render SubD Leval" to 4 for Victoria 6. I maybe could have gotten away with 3, but If I left it at the default 1, I lost all the HD detail in Iray render. This seems to be automatic in 3Delight renders.
- I set the "Environment Mode" on the render properties to "Scene Only". The default "Dome and Scene" will light the scene with a sky dome that is as bright as these lights. Have to set it to "Scene Only" to only have the Inane Glory lights do the lighting.
- I set the intensity of Light 1 to about 3/4 of the default value to not overexpose the skin.
The render time was 2 hours, CPU only. This was terminated by the 2 hour time limit, but was about 92% converged.
The back drop texture is probably from Point and Shoot 3 and is the same in both renders. DestinysGarden suggested, I should have reduced the bump strength.
I think it looks really nice.
DestinysGarden makes a good point. If that were a backdrop in a photo studio, it would most likely be painted/printed muslin, with little to no discernible texture.
Just because they strive to make the render engine photo real doesn't mean the stuff you are rendering has to resemble reality. I think the background looks neat... not to mention the lady.
My now very old nvidia (In the computer I replaced a couple of weeks ago) had some odd crashing issues. It insisted on being clean, it didn't like to get warm.. and it would so crash just to piss me off. I actually called tech support about it and there was an arcane ritual I had to preform every so often to get it to leave off being bad for a while. There was a set of files I had to delete and then clear garbage out to be sure it was all gone. It actually was something not uncommon for the HP that it came in to do that because I know a couple of other people with the same computer who had the same issue.
Experimenting with shaders and low/dramatic lighting and in Iray. This one definitely needs to be viewed at full resolution to appreciate the lighting and shaders. At the reduced forum resolution it looks terrible (not that it's a really great render, but it just doesn't look nearly as good).
Keep in mind the maximum HD level is 3 for the morphs (they are made at that level) so anything more wastes processing time.
...I really like the second one.
Not sure either but I don't have the bucks to get a fancy high end card so for now I have something that iRay can only use my CPU. My renders are about the same as 3Delight so I can't complain....
Here's a really pointless, noisy render except to say that I love the Nvidia Iray shaders.
The blobby fleshy thing in the front uses the Noise-Perlin Glossy shader. I deliberately changed the colors towards flesh (Color #2 in the Surfaces) and arterial blood (Color #1 in Surfaces).
The other blobby thing is Noise-Worley Glossey. Again, chose fleshy (goes in Color #1 for Worley) and blood-y (in Color #2).
I can see myself using Perlin shaders for all sorts of Horror-genre stuff. If you change the Scaling in Surfaces, it does neat stuff to the patterns.
I'll have to play more with the Worley pattern to find a good use for it.
The planar surfaces are also Nvidia shaders, but they are kind of boring...
..so basically 100$ more than the standard GTX 980 for an extra 2GB of video memory, an extra 786 CUDA cores and roughly similar in performance and specs to the Titan Black.
Checked ebay and "buy it now" prices for the current 4GB 980 are still in the 600 - 800$ range. Titans and Titan Blacks are where I am seeing the drop in price (most likely though due to the Titan-X). Seeing a lot of Quadro 6000s (not the Kepler "K" series) for sale at around the same price too.
Read a post from one person here who reported that even with a Titan6G, rendering was very slow. Sounds most likely likely that the scene exceeded the GPU's memory and defaulted to the CPU. It didn't seem to be a very complex scene either (definitely no where near what I throw at a render engine). Seems like for my purposes, the Titan-X is still going to be the best choice.
Just because they strive to make the render engine photo real doesn't mean the stuff you are rendering has to resemble reality. I think the background looks neat... not to mention the lady.
I can't speak for DestinysGarden, of course, but I was merely thinking less computer generated texture would speed up the render some. It certainly was not a criticism. As I said, I think the render looks really nice.