Show Us Your Iray Renders. Part VII

Taoz

JOdel said:

Does it run on a Mac?

There is a Mac script available, but AFAIU he hasn't tested it himself.

E.Bru

JOdel

L'Adair said:

JOdel said:

Quick question: I'm stuck needing to render in Iray. I'm on an iMac, so no Nvidia availabvle. What settings do I need to tweak to get as little noise as possible?

I have done a few renders using Iray, and they always stop while the image is still noisy. I've tried setting the maximum time (default is 7200 seconds) for longer, but it didn't help. So what settings need to be adjusted, and in which direction to get a clear render?

I'm using the Painter's Lights -- which I am very glad that I grabbed while they wwere still in the store. The scene is Roughy's Medieval Fantasy bedroom with the emmissive fireplace.

@JOdel, The default Progressive Rendering settings are:

• Quality Enable: On
• Quality: 1
• Convergence Ratio: 95%
• Max Samples: 5000
• Max Time: 7200

All five of these settings work together for the code to determine when it's "finished" rendering. Convergence Ratio, Max Samples and Max Time are "Stop" conditions. Regardless of any other settings, once one of these three is reached, the render will stop. You can increase how many iterations, (samples,) it takes to reach the Convergence Ratio by increasing the value of Quality.

However, you can bypass the whole Quality/Convergence algorithm by setting Quality Enable to Off.

With Quality disabled, the image will render until Max Time or Max Samples are reached. But you can also disable Max Time, by entering a value of zero. That leaves Max Samples as the only stop condition. After the image finishes rendering, you can increase Max Samples if the image isn't "finished" to your liking, and hit the resume button.

The limit on Max Samples is 15000, but is controlled just as any other parameter in Daz Studio.

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Rule of thumb is, Iray likes light. If you need to speed up your dark renders, try increasing the light in the scene and use Tone Mapping to darken the image. Unlock the Exposure Value parameter and increase the value to darken the render.

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I do not yet have the Medieval Fantasy Bedroom. Looking at the promo images, I suspect the emissive fire uses one or more planes for the embers. These planes will be transparent except for the actual glowing embers. If you "turn off" the fire, do you still get the "horizontal strip above the fireplace itself that only renders the dome"?

I never turned off the fire. And for several of the first test spot renders there was no problem. And then suddenly that section of the wall stopped rendering.

I ended up rebuilding the scene and got rid of the problem that way. But I still would like to know what caused it, so I can avoid it . 

As for the fire. It's a separate prop, so not attached to the rest of the room. 

Thanks for the info. I could probably just set the max samples to its maximun and just let it rip until it looks good enough to use.

The Inner Circle

As @L'Adair said tghe max iterations is 15000 but like any parameter can be unlocked. I haved done iray renders with the iterations set at 30000 as a test and the render completed my convergence value at 24000+.

My graphic card is a 2014 Asus GTX Titan Black 6GB and if I do a complex scene it can take longer than the defaults for Daz to complete it to my level of satisfaction. Someone pointed out the override to the 15k iteratioons and although I have only ever needed it once or twice it was not something I would of thought of myself.

David

AlmightyQUEST

If you are waiting based on another parameter (time or convergence), can you just set iterations to zero so it ignores the limit? Or does iterations not have that ability?

L'Adair

AlmightyQUEST said:

If you are waiting based on another parameter (time or convergence), can you just set iterations to zero so it ignores the limit? Or does iterations not have that ability?

It doesn't have that ability. But setting it really high is effectively the same as turning it off, if you're using time and/or convergence for your stop condition(s).

If you could effectively turn off all the stop conditions, Iray would render on until you stopped it, much like Reality, (maybe Luxus too, but I've never used it, so I don't know.) I've no idea if Daz or Nvidia made that decision.

And it doesn't really matter to me. With very few exceptions, and those being test renders, I control the length of my renders solely by setting the Max Samples parameter.

 

JOdel said:

Thanks for the info. I could probably just set the max samples to its maximun and just let it rip until it looks good enough to use.

That's pretty much what I do, most of the time.

I'm glad you got it working, but I agree with you, it would be nice to know what caused the problem in the first place. Redoing a scene isn't the best option, imo. But you got it working the way you wanted, and that's the most important thing.

JOdel

It's 2 hour+ in and still pretty noisy. I set the max at 15000, and I think it's at something like 529. I've not seem much change for the last half hour or so, but I sent it to the Dock to render out of sight, so maybe I'll see some improvement next time I look at it. 

ETA: 7+ hours in and up to 1500 samples. The room looks fine, but I'm still seeing a lot of noise in the skin. There is a phenominal amount of color noise in the clothing, but I'm not sure that isn't in the textures. (Screenshot of face detail)

I'll see what I've got in the morning.

ETA 2: I gave it overnight and into the next morning. It cleared up to a degree, but since I had always intended to run it through an analog art filter I gave up after 18 hours. The room had looked fine after about 3-4. The noise in the clothing never cleared at all, and was quite unwelcome. The hair and skin still had enough noise to be able to see it, but I really didn't think it was going to get any better.

Used: ROG Medieval Fantasy Bedroom, with the props moved about, J.Cade's Painter's Lights, G8M wearing the Lief Viking outfit, which I sent through Photoshop to change the grey-green to red (the color noise was already in the texture, I didn't touch that part of the file), the Time Rogue belt and sword, Drago hair with IslandGirl's Iray hair shaders, and one of the old Dream Home rugs with one of the textures added on, run through the SickleYeild and River Soft Art's 3DL to Iray converter.

Fishtales

Ascension

2019-07-22 11:03:51.632 Total Rendering Time: 1 days 13 hours 16 minutes 50.90 seconds

 

Ivy

The Sorceress Of Warrock  ~ #Gallery

XpiderMan

Boonie relaxing...

Fishtales

After changing a few things in the bedroom render, and turning off the panel light outside the window, which I didn't realise was there, and turning the distant light/sun back on, I let this next render run. After it had sat at 95% for a long while with nothing looking changed I stopped it.

2019-07-24 12:42:03.068 Total Rendering Time: 23 hours 26 minutes 46.97 seconds

95% done

Click on image for full size.

maikdecker

Manfred by RawArt - slightly modified.. Skin is Vladimir 8. The nose was made smaller with Ollie's small nose morph. Ollie, Floyd, Vladimir and Old Chap were added with ~25% each.

I had to make a render with this guy, as I got him today for only $ 4.99 - sorry @RawArt

Richard Haseltine

Don't delete the attachment after adding the large version in-line - the in-line version iss till linking to the attachment, and so the image is missing for anyone coming along later (you still see the cached copy).

Bobvan

It's been a while a celebratory render

Gordig

The Chase

maikdecker

Richard Haseltine said:

Don't delete the attachment after adding the large version in-line - the in-line version iss till linking to the attachment, and so the image is missing for anyone coming along later (you still see the cached copy).

Ah, one learns something new etc. etc. ;)

Re-upped the picture and did new linking

Ivy

Gordig said:

The Chase

That is a epic render. you got a really great imagination

Lothar Weber

Would like to throw in another one with the incredible ROG Medieval Fantasy Bedroom and of course this week... A CAT ;-)

TourqeGlare

I call it "You Fixed It."

https://twitter.com/LevithorArts/status/1154714152742445057

Robert Freise

TourqeGlare said:

I call it "You Fixed It."

https://twitter.com/LevithorArts/status/1154714152742445057

Cute

XpiderMan

Felix and Barkie

Lothar Weber

Inspired from an ancient Painting: Aqua Alta

For those who don't know: 

Acqua alta (/ˌækwə ˈæltə/,[1] Italian: [ˈakkwa ˈalta] (listen); lit. "high water") is the term used in Veneto for the exceptional tide peaks that occur periodically in the northern Adriatic Sea. The peaks reach their maximum in the Venetian Lagoon, where they cause partial flooding of Venice and Chioggia; flooding also occurs elsewhere around the northern Adriatic, for instance at Grado and Trieste, but much less often and to a lesser degree.

The phenomenon occurs mainly between autumn and spring, when the astronomical tides are reinforced by the prevailing seasonal winds that hamper the usual reflux. The main winds involved are the sirocco, which blows northbound along the Adriatic Sea, and the bora, which has a specific local effect due to the shape and location of the Venetian lagoon. (Wikipedia)

Gogger

Finally got around to trying a baby render. I like Ella and that hair certainly makes the look.  I'm glad I bought in despite all the controversy when the babies first came out.

Lothar Weber

Gogger said:

Finally got around to trying a baby render. I like Ella and that hair certainly makes the look.  I'm glad I bought in despite all the controversy when the babies first came out.

 

Soooooo cute... I love it 

Bobvan

Nice stuff everyone.

tkdrobert

Black Panther

Wonderland

Lothar Weber said:

Inspired from an ancient Painting: Aqua Alta

For those who don't know: 

Acqua alta (/ˌækwə ˈæltə/,[1] Italian: [ˈakkwa ˈalta] (listen); lit. "high water") is the term used in Veneto for the exceptional tide peaks that occur periodically in the northern Adriatic Sea. The peaks reach their maximum in the Venetian Lagoon, where they cause partial flooding of Venice and Chioggia; flooding also occurs elsewhere around the northern Adriatic, for instance at Grado and Trieste, but much less often and to a lesser degree.

The phenomenon occurs mainly between autumn and spring, when the astronomical tides are reinforced by the prevailing seasonal winds that hamper the usual reflux. The main winds involved are the sirocco, which blows northbound along the Adriatic Sea, and the bora, which has a specific local effect due to the shape and location of the Venetian lagoon. (Wikipedia)

Love this!

Wonderland

Gogger said:

Finally got around to trying a baby render. I like Ella and that hair certainly makes the look.  I'm glad I bought in despite all the controversy when the babies first came out.

So adorable! One of the best baby renders I’ve seen!

TourqeGlare

So much dial spinning! More of a test and WIP than a full piece. With Daz Genesis 8, I feel like I kitbashed a bunch of Star Trek model ships and made one (near) seamless Star Wars ship. There are glitches, like the cheekbones, and not looking good at every angle, but I like my results.

Oh, Kayma for Gen8, Cartoonized, Aiko 8, Sakura 8, SY 200 Free Morphs for Genesis 8, Genesis 8 Female Head/Body Morphs, and a few other bits and bobs. I made the clothing and the hair.

Ivy

Gogger said:

Finally got around to trying a baby render. I like Ella and that hair certainly makes the look.  I'm glad I bought in despite all the controversy when the babies first came out.

wow very good I second Wonderland comment best baby render Ive seen yet. Better than Angelwings and Angelwings has some pretty amazing baby renders.