ShaderMixer

Various informations and discussions about DAZ Studio
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Ladonna
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ShaderMixer

Post by Ladonna » Tue Jun 23, 2009 11:46 am

It is me again 8)

I have to say, DS3 really impress me a lot. As a old Poser user, i am surprised about the Power from DS3.
Now i have a question about the ShaderMixer.

Did somebody have a tut about the Nodes? Like for poser? http://www.castleposer.co.uk/my_tutorials.html

Or can i find somewhere some explanations on what kind of Algorithm the shader are build?
As example, i want to make Gold. the refraction value from Gold is 0.47, in DS3 i had tu use something between 8-9 to receive nice results.
How they calculate them?? :shock:
Did somebody know?

Thanks in advance.... :)

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Re: ShaderMixer

Post by Lakys » Tue Jun 23, 2009 12:27 pm

Ladonna wrote:It is me again 8)

I have to say, DS3 really impress me a lot. As a old Poser user, i am surprised about the Power from DS3.
Now i have a question about the ShaderMixer.

Did somebody have a tut about the Nodes? Like for poser? http://www.castleposer.co.uk/my_tutorials.html

Or can i find somewhere some explanations on what kind of Algorithm the shader are build?
As example, i want to make Gold. the refraction value from Gold is 0.47, in DS3 i had tu use something between 8-9 to receive nice results.
How they calculate them?? :shock:
Did somebody know?

Thanks in advance.... :)
Hi again,

you can get good metal effects without using the shader mixer.

In your case, you need to set the refraction index to 0 for metals to get a metallic reflection (similar to a mirror). Refraction would hardly help as the material is not transparent.

Do you have any texture, or nothing? I can eventually provide a preset if I have some idea of what you are doing exactly. Or you can post a screenshot of the surface advanced settings, so I can guide you further.

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Post by Ladonna » Tue Jun 23, 2009 2:32 pm

I am just building up my shader folder. :) Nothing special.
I use at first reflection maps for really great results , but after i thought maybe i can get some nice and more complex results in the shader mixer.
It is only for learning pursues.

here a screen what i mean

The first is my material room in Poser.

And i want something similar in DS3 too. :)
Attachments
DS3shader.JPG
DS Shader room

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Ladonna
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Post by Ladonna » Tue Jun 23, 2009 2:34 pm

here is the poser shader
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posermatroom.jpg

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Post by Lakys » Tue Jun 23, 2009 3:44 pm

Well, that's an interesting project you have there.

Is it possible to have a look at the reflection map used (providing there is no copyright issue)?

Creating and using reflection maps is one way to proceed, which works well in poor environments and provides specular results. Alas, if the maps do not fit the environment, the results may not be realistic or even looking that good.

Then using a physically accurate model may give much better results. Keep in mind that real reflections, global illumination and caustics are what will make jewelry looking real in CG, as those are mostly based on optics and physics.

If by luck you have Carrara, there is some scene sample with a golden ring.

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Post by Ladonna » Tue Jun 23, 2009 3:53 pm

The reflection map i made by my own.

It is a simple image , a photo from a metal prop out of my kitchen, blured, altered and modified a lot in PS.

Changed the color in gold etc..

I have Cararra to and i was thinking tu use it for reflections too.

The strange effect in poser i only received with the shadernodes. :)
Attachments
reflectiongold.jpg
reflectiongold.jpg (286.89 KiB) Viewed 379 times

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Post by Lakys » Tue Jun 23, 2009 4:04 pm

Ladonna wrote:The reflection map i made by my own.

It is a simple image , a photo from a metal prop out of my kitchen, blured, altered and modified a lot in PS.
Changed the color in gold etc..
Looks great. :)

However, does the gold shader in Poser give good results in renders?
I ask that, just to determine whether it is worth to reproduce the same in DAZ Studio. :P
I have Cararra to and i was thinking to use it for reflections too.
I wish I could do that render in Carrara to show you the caustics (which are areas of lights appearing in the ring surrounding).
The strange effect in poser i only received with the shadernodes. :)
I don't know whether you made it yourself, but the effect is amazing.

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Post by Ladonna » Tue Jun 23, 2009 4:14 pm

Yes, it looks really great in renders.
I spent now maybe the last 6 months with learning more in poser shader room.

I read so many tutorials, had try and errors, that sometimes i dream from the Material room. LOL

After i find this one site from the link i put, i was till morning 2-3 in the matroom and try out nodes. :)

I want special gemstones, and special Gold and silver . More real

I find out, with the math nodes and Edgeblend you can have amazing results.

Combine it with a simple reflection map and AO.


This is a poser 7 render , default lights.


Thank you for the nice Comment :)))
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chaingold.jpg
chaingold.jpg (45.17 KiB) Viewed 367 times

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Post by Lakys » Tue Jun 23, 2009 4:31 pm

It looks really good indeed. :)

Have you also tried to render on a neck, single light source and shadows on to see how it behaves?

I know the pain with material room, once I played a full month with it on skin. It was not more than once.

The EdgeBlend is great and it does also exist in DAZ Studio 3 shader mixer.

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Post by Ladonna » Tue Jun 23, 2009 5:29 pm

Yes, it looks great on skin too. You just have to take care with AO. Dont put AO on the skin material, because this looks a bit to much.
I will upload later some Images with V4 and this necklace.

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Post by cowdog » Tue Jun 23, 2009 6:07 pm

There are a number of freebie shader presets available if you're not already satisfied with what you've done, e.g. Questor & Sha. Questor, in particular has a gold jewelry preset.

Since you mentioned that you have Carrara, you can look at its predefined shaders and use them as templates for any new shaders you might want to create in the future (I've done that).

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Post by Ladonna » Tue Jun 23, 2009 6:17 pm

@Cowdog. Thanks for the tip.
I can use Carrara shader in DS? :shock:

Now this is really great.

I buy me the shader presets from mmalbert at Renderosity.
Great shaders, no doubt, but i want more complex . More real.

Shaders which look mostly in every light great. Without to put AO on V4.
Or use AO light.

I find out, that this degrease the Render time a lot.
There is only heavy shader where it is needed.
Poser has a lot of memory problems and this was a good way to make nice render with jewels or even clothes without to kill my memory in poser.

AO lights i like a lot, but in Poser sometimes not possible to render when you have more than V4 in your scene.

I will try out the carrara shaders as template.
Thanks :D

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Post by cowdog » Wed Jun 24, 2009 2:28 am

Ladonna wrote:@Cowdog. Thanks for the tip.
I can use Carrara shader in DS? :shock:

I will try out the carrara shaders as template.
Thanks :D
I hope I didn't give you the wrong idea, but what I've done is to simulate the same recipes used in carrara. Here's an example of a gold shader preset lifted from Carrara (and this requires manual input on my part): It uses the "metalic" shader.
Attachments
gold.jpg

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Post by cowdog » Wed Jun 24, 2009 2:31 am

I used the above preset on the wings here.
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Valkyrie 2.jpg
An image using various metals... including a variety of "gold" shader presets (including the one above).

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Post by Ladonna » Wed Jun 24, 2009 4:01 am

Looks fantastic.
Really great. Not so dull. :)
Like it.

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