Show Us Your Iray Renders. Part III

8eos8

Gedd said:

No, I meant roughness and exactly as Marmoset refers to it, microsurface. It's the microsurface roughness that causes dispersion patterns. More specifically, reflectivity defines how much is reflected*, roughness defines the dispersion pattern. The NVIDIA GPU Technology Conference video touches on this at 12" in.

* To clarify, in environments where reflectivity is a parameter, it usually is used to define an amount of overall reflectivity. In many environments, reflectivity is a derived value and one of the primary parameters which define what that derived value is, is roughness.

Ok, I was a bit confused because you were talking about roughness being a single parameter measured for a material, but I've usually seen it recommended to use a texture map for it too (with noise, scratches, etc.). (Though of course if you use both then the single value scales the values in the map...but then I'd think you'd need to measure the range as well and make sure the scaled map won't go outside of it)

Musicplayer

Gedd said:

Musicplayer said:

...
Definitely will be needing a new computer for Iray, once I finally make up my mind what spec to get, a decision which is taking me months.

This is probably a good thing as I expect there to be a significant jump in performance per dollar come fall.

Hi Gedd,

Yes, I was very keen on the new X99 chipset and motherboard, and even ran a thread here some months ago discussing the merits, but I can only afford to spend the budget once. I am hooked on the new Daz Studio 4.8 Pro beta with Iray, so want to make sure I get the best set-up for my money once I know exactly what is required.

Cheers :-)

DAZ_cjones

Doing some test on the caustic sampler and kinda stumbled into this. Its lite with a single photo metric spot light and composed of simple Studio primitives, but I liked how the caustics played out.

DAZ_cjones

MEC4D said:

I was working on ghost with the MDL shaders and ended with making fabric shader lol
no textures or bump maps all shader based .. cool what?

Very nice. Custom MDL, Shader Mixer, or settings on the uber?

MEC4D

Thanks Chris and everyone !
Custom MDL in Shader Mixer Tab, just primitive shader color based and Fresnel ior .. I need to work on it more and add some more components like translucency etc
I find it quiet interesting and all the possibilities
I tried to do a snow, but my knowledge is still poor as I can't find function to change the world coordinates so it appear only on top
but that is my new challenge to do so ;)

DAZ_cjones said:

MEC4D said:

I was working on ghost with the MDL shaders and ended with making fabric shader lol
no textures or bump maps all shader based .. cool what?

Very nice. Custom MDL, Shader Mixer, or settings on the uber?

tomtom.w

Making darker skin and dark hair look good seems to require starting from scratch again, because none of the settings I used with a blonde and light skinned character looked good on this character. But I feel I've made some progress...

The cornea has had the bulge increased to 1.5, thin water shader applied and caustics on when rendering.

(Edit: forgot to add a render of the blonde character.)

kyoto kid

MEC4D said:

Thanks Chris and everyone !
Custom MDL in Shader Mixer Tab, just primitive shader color based and Fresnel ior .. I need to work on it more and add some more components like translucency etc
I find it quiet interesting and all the possibilities
I tried to do a snow, but my knowledge is still poor as I can't find function to change the world coordinates so it appear only on top
but that is my new challenge to do so ;)

DAZ_cjones said:

MEC4D said:

I was working on ghost with the MDL shaders and ended with making fabric shader lol
no textures or bump maps all shader based .. cool what?

Very nice. Custom MDL, Shader Mixer, or settings on the uber?

...indeed those clothing textures look incredible.

Lissa_xyz

I'm going to ask this here, because it seems like an all-inclusive thread.

When creating an SSS preset for a skin using the Iray shader, should the translucency and SSS colors be a darker hue of the general skin tone, dark red no matter the skin color, lighter color, or something else entirely?

Also, what can I do for even 360 degree lighting to get a more accurate representation what the skin looks like? I thought about using a regular dome as one giant emissive, but no idea what emission and render settings to use at that point.

MEC4D

character and skin study for Saturday

kyoto kid

...your work is amazing.

Don't remember if someone already asked this, but will you be releasing a set of Iray skin sources in the store?

MEC4D

Thanks, I am working on my new Buddy 3 with new Iray skin settings ,I discovered more interesting stuff under the shader mixer tab and want to add some more blocks and set my own exclusive shader for skin without the rest what is not needed , will make it more clear where to plug what .

Kyoto Kid said:

...your work is amazing.

Don't remember if someone already asked this, but will you be releasing a set of Iray skin sources in the store?

kyoto kid

...even with Zigraphix's Shader Mixer Tutorial, having a difficult time wrapping my brain around it. Feel I need a 1,000 tablet bottle of Advil on the desk.

This is why I pay for content creators to do all the "under the bonnet" work. Would love to see a generic skin resource for Iray along the lines of Skin Builder Pro.

Teddy G

Thanks everyone for sharing your Iray settings. They're helping me get closer to desired results.

Rendered in 44 min. Postwork in Photoshop & Gimp for lighting.

HoMart

Thank you ALL, for sharing your discoveries and settings
in this and in all other Iray related threads.
After lots of reading I was able to create this image

Stonemason

some simple architectural stuff...

Toyen

Those architectural renders are beautiful!

pearbear

Stonemason said:

some simple architectural stuff...

Nice! Makes me think Louis Kahn.

BeeMKay

The Ghost-shader is at a point where I think it looks okay, but there's something not perfect yet. Any ideas?

Here's the latest render with an object in the background to show transparency.

Takeo.Kensei

Trying to make some snow

jag11

A sunday morning coffee and render. No PW, no compositional value, no skills, just pure fun.

Eva1

Thought I'd try some b&w images as I found the saturation slider:) Pretty simple set up using Sun & Sky, props from my library and one of the Iray glass shaders.

Oso3D

Eva, I really like that B&W.

Eva1

Thanks timmins - I can see hours of fun ahead just doing b&w renders - so cool to have this:)

BeeMKay

I changed the colors a bit, and applied the transparancy maps to Coutout Opacity for this one.
Still experimenting, and open for suggestions.

sheedee3D

Finally after all these years...i am able to do close up portrait renders again without worrying if they will come out good or not!...

Iray has made it possible!...most of all i like how the eyes are coming out!...of course it all needs more tweaking and fiddling...but for starters its all nice and dandy!...

Both renders done with Pixar hdr...15 min each...could have let them bake more...but was not really necessary.

Oso3D

I really like that regular lighting is pretty straightforward. None of this trying to create mock ambient lighting.

AlexLO

My Iray image "The Boxer" is featured on Nvidia's YouTube Channel & I would image will begin turning up across their social feeds in the coming days :-)

https://www.youtube.com/watch?v=gJivCvkmCeY

View the original full image here in the PBR Iray Images section of my gallery
The Boxer by Alex LO

TJohn

A little bit of still life.

jag11

Ghost version.

jag11

Alex L said:

My Iray image "The Boxer" is featured on Nvidia's YouTube Channel & I would image will begin turning up across their social feeds in the coming days :-)

https://www.youtube.com/watch?v=gJivCvkmCeY

View the original full image here in the PBR Iray Images section of my gallery
The Boxer by Alex LO

That's cool. Congrats.

I wanted to see if I could replicate the effect.