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Poser F.A.Q (Updated: 2019 Jan 31 1:28 pm)


 Subject: Is there a decent pearl shader out there for Poser 9/Pro 2012?

LaurieA opened this issue on Jul 09, 2012 · 225 posts

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  bagginsbill    ( ) ( posted at 10:01AM Thu, 12 July 2012  · @3956215


On the left, the Reflect+Blinn+Diffuse.

On the right, the Reflect+ks_microfacet+Scatter.


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  LaurieA    ( ) ( posted at 10:02AM Thu, 12 July 2012  · @3956217

Ooooh. I'll try that last one. Thanks! :D

Laurie

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  bagginsbill    ( ) ( posted at 10:12AM Thu, 12 July 2012  · @3956219


Suppose you want transparent but colored glass.

Out with the Scatter, in with the Refract.

But!

There's no place to plug in the color, and if we use the color as-is it will be wrong.

Refraction in Poser happens at mesh boundaries. When we look through an object via refraction, we multiply with the color on each bounce, which means looking through two mesh boundaries we get color times color, or color ** 2.

If we want the same effective coloring, we must use the square root of the color we want. I do that with the Color_Math node. This is multiplied with the Refract node, giving us the subsurface effect we want into the Fresnel_Blend Inner_Color.


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  bagginsbill    ( ) ( posted at 10:13AM Thu, 12 July 2012  · @3956220


New Refract glass is on the left.

Previous Scatter glass is on the right.


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  LaurieA    ( ) ( posted at 10:15AM Thu, 12 July 2012 · edited on 10:16AM Thu, 12 July 2012 · @3956223

So, that new transparent glass can be used with gemstones as well with the correct IOR in the fresnel blend? I am saving all these material room panels yanno...lol. Reference - always looking for reference ;).

Laurie

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  bagginsbill    ( ) ( posted at 10:23AM Thu, 12 July 2012  · @3956225

Quote - So, that new transparent glass can be used with gemstones as well with the correct IOR in the fresnel blend? I am saving all these material room panels yanno...lol. Reference - always looking for reference ;).

Laurie

Yes you can use this for gem stones.

And the color does not need to be a constant - it can be more nodes plugged into the Sqrt, and have the Sqrt Value_1 color be white so it just takes whatever you have plugged into it.


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  shedofjoy    ( ) ( posted at 11:10AM Thu, 12 July 2012  · @3956244


I was playing around with the simple pearl shader and ended up with the two shaders, one in the middle and the right.. the left is BB's pearl simple shader...

I post forum coments from my phone,woe is the pace of technology, now where is poser for android?

  LaurieA    ( ) ( posted at 11:14AM Thu, 12 July 2012  · @3956249

I know. Good stuff, right? ;) They look nice :)

Laurie

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  bagginsbill    ( ) ( posted at 11:26AM Thu, 12 July 2012  · @3956259


Got a PM question about the glass casting a shadow problem. For thick glass we have no solution. For thin glass, which has no significant refraction anyway, we can use transparency instead. This is great for windows, eye glasses, etc.

Here's how to wire it up with Fresnel_Blend.

It's VERY important that you plug the Reflect node into Alternate_Diffuse, and not into Reflection_Color. The Poser Surface node does old-school incorrect math with Reflection_Color channel data and transparency. It does not attempt any such bull-sh** with the Alternate_Diffuse data.

The correct math is in Fresnel_Blend. That's what we want it to use.


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  bagginsbill    ( ) ( posted at 11:29AM Thu, 12 July 2012  · @3956262


Looks like this.


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  bagginsbill    ( ) ( posted at 12:22PM Thu, 12 July 2012  · @3956286


Got glitter working. Was not easy because over large distances, obvious repeating patterns and even artifacts show up in the noise-based nodes. I had to combine a noise and a fractal_sum to get rid of the problems.

I used Satin Flame on the fenders.


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  bagginsbill    ( ) ( posted at 12:25PM Thu, 12 July 2012 · edited on 12:25PM Thu, 12 July 2012 · @3956289


Here's how to get a clean noise, which sounds contradictory I suppose.


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  LaurieA    ( ) ( posted at 2:50PM Thu, 12 July 2012  · @3956377

copy image...thanks BB! Again :D

Laurie

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  LaurieA    ( ) ( posted at 4:29PM Thu, 12 July 2012  · @3956412


Breciated Jasper. More or less ;).

Laurie

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  bagginsbill    ( ) ( posted at 4:42PM Thu, 12 July 2012 · edited on 4:42PM Thu, 12 July 2012 · @3956421

Oooh - that's a nice one.

It almost looks volumetric. Is that two surfaces or one?

Hmmm - you've given me an idea.


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  LaurieA    ( ) ( posted at 4:46PM Thu, 12 July 2012 · edited on 4:47PM Thu, 12 July 2012 · @3956424

Actually it's a real mishmash...lol. No clue of what I'm doing but the result was what I wanted...lol. And I haven't set it up for Poser 9/2012 yet ;). Screenie in a minute....

Laurie

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  LaurieA    ( ) ( posted at 4:49PM Thu, 12 July 2012 · edited on 4:57PM Thu, 12 July 2012 · @3956426


Here it is, the mess that it is....lol. Don't laugh too hard :P

What I was initially trying to do was to find a way to do those awesome swirls and rings like agate has without using the P node. Failed in that, but got this instead. I can't do malachite or azurite until I figure out how to do that. Can't be done I guess.

Oh, and it's only one surface if you mean is there a cover over the cabs...

Laurie

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  LaurieA    ( ) ( posted at 4:59PM Thu, 12 July 2012  · @3956427

It just occured to me that I may be able to do swirls and rings with the cellular node. Hmmm....

Laurie

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  bagginsbill    ( ) ( posted at 5:08PM Thu, 12 July 2012  · @3956429

Hah - I know you have an aversion to matmatic but it comes with demos of agate-like swirls.

Create two clouds nodes. The first should be gray and white, and plug that into the scale input of the second. Use colors on the second one. Try different ratios in two scales.


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  LaurieA    ( ) ( posted at 5:15PM Thu, 12 July 2012 · edited on 5:21PM Thu, 12 July 2012 · @3956432

Quote - Hah - I know you have an aversion to matmatic but it comes with demos of agate-like swirls.

Create two clouds nodes. The first should be gray and white, and plug that into the scale input of the second. Use colors on the second one. Try different ratios in two scales.

Thanks! I'll give it a shot ;).  And I do have an aversion to Matmatic...lol. I understand programming language about as much as I understand the material room :P LOL

Laurie

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  sandman_max    ( ) ( posted at 7:38PM Thu, 12 July 2012 · edited on 7:39PM Thu, 12 July 2012 · @3956497

Quote - You know this is one of the most difficult materials of all.

I needed a reference image where I control (and can reproduce) the lighting. So I took a magazine (to see reflections) and put some pearls on it and shot the picture.

I attached that to a Poser square, and suspended some Poser pearls and went to work.

I am closer, I think, than last time.

I'm not sure if I am willing to give this one away, though. This belongs in the store - nobody has anything like it. It happens to be using some techniques for thin coatings that I only recently developed. Like a few days ago. I'm getting that ready for the store, too.

I'll buy it, especially if it comes with those thin-coat shaders.  Or any shaders.  More shaders.  More is definately better.  One always needs more shaders.  Right after chocolate.


  LaurieA    ( ) ( posted at 7:44PM Thu, 12 July 2012  · @3956501

Quote - I'll buy it, especially if it comes with those thin-coat shaders.  Or any shaders.  More shaders.  More is definately better.  One always needs more shaders.  Right after chocolate.

Everything after chocolate ;).

Laurie

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  Hana-Hanabi    ( ) ( posted at 7:54PM Thu, 12 July 2012  · @3956504

Perf. I totally needed some colored glass for something I'm planning. ^_^

Ne, BB...Any timeline for when these delish new shaders will be available for purchase? I want to make sure to work them into my budget!

花 | 美 | 花美 | 花火 
...It's a pun. 


  bagginsbill    ( ) ( posted at 8:23PM Thu, 12 July 2012 · edited on 8:24PM Thu, 12 July 2012 · @3956521

Probably next week.

By the way - the crazy paint makes the best nail polish.


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  Hana-Hanabi    ( ) ( posted at 8:30PM Thu, 12 July 2012  · @3956527

The glitter one actually looks really similar to some of the nail polish I've got, heh. I also have one that's kind of similar to the Satin Flame if I do some fancy nail-paint tricks with a toothpick, heh.

花 | 美 | 花美 | 花火 
...It's a pun. 


  LaurieA    ( ) ( posted at 9:01PM Thu, 12 July 2012  · @3956546

Quote - Probably next week.

By the way - the crazy paint makes the best nail polish.

I've been using your BB Car Paint shader for nails for a LONG time ;).

Laurie

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  LaurieA    ( ) ( posted at 11:03PM Thu, 12 July 2012  · @3956601


One more: Moss Agate ;).

Now, I've gotta stop or I'll be fiddling with this stuff forever...lol.

Laurie

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  bagginsbill    ( ) ( posted at 11:26PM Thu, 12 July 2012  · @3956607

Very nice effect.


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  monkeycloud    ( ) ( posted at 9:15AM Fri, 13 July 2012 · edited on 9:15AM Fri, 13 July 2012 · @3956746

Catbot got his British Racing Green paint job... pity I forgot to change the white undercoat for that candy shader. Least I think that's what I didn't do??


  bagginsbill    ( ) ( posted at 9:24AM Fri, 13 July 2012  · @3956749

Very nice - did you make that set? It's cool.

What do you mean about forgetting to change the white undercoat? For what purpose?


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