ZBrushCentral

*SubSurface Scattering - Skin Mat & NEW Triple and Quad shaders from Pix on page 5*

ZBrush Artworks
#101

Here’s a couple more skin tests using pix’s ColorizerTriShader.

In the ex. Skin2, a little added color and specular highlights to achieve the look.
In the ex. Skin3, the model has a texture map and lots of bump used for wrinkles, some fiber brush work then eyes and teeth to round it out.
These images and shaders use the same light settings as my post above… download the above .zip to get the proper light settings for the materials.
Here are my materials:
Pus_ColTrishaderskinmat2&3.ZIP

Enjoy,
Michael

#102

lot of interesting ways to skin “skin” here, hehe.

I gave it a try to fake the subsurface scattering, which may or may not be possible but I don’t have much knowledge of z-brush’s innards.

anyway there’s my attempt, which falls short I’m afraid.

if you don’t know the main effect of subsurface scattering is that thin membranes will take light through them and thus “glow” a little bit, because they are translucent. they easy test of this would be the ears or nostril bells, do they look like light is passing through them or do they just look solid with color on top? I’m afraid they look solid in all of these. but the main effect to achieve in subsurface anyway is not detail it’s the way of light shining so that certain types of materials take in them and bounce it around. this starter one I did was relying on lighting and glow in the material properties but doesn’t really do the job. could be possible though, that’s the exciting part! I’ll study maybe what colorwise makes traslucentcy and see if I can get it in a shader.

#103

Just reading through this whole thread, what may be more useful would be a material that’d allow you to paint in glowy, SSS attributes. Something similar to this series of renders in 3dmax by antropus (whos also a zbrush user I believe?), all default scanline render, all achieved through mapping tricks:
http://www.antropus.com/english/andam059.htm http://www.antropus.com/images/mao004.jpg http://www.antropus.com/images/texturewip006.jpg http://www.antropus.com/images/mao001.jpg

From my limited understanding, zbrush can’t really achieve SSS effects like in other packages, due to it only storing 1 depth value per pixol, ie, it can’t work out thick and thin walled areas. A paintable fake would seem to me a better solution, and something that’d play more to zbrush’s strengths.

I’d be happy to be proven wrong however! I’m just a dumb 3d op after all… :wink:

-matt

#104

This has been one of the best threads I’ve ever read here and packed with mindblowing models. Thanks!

#105

This thread has helped me a lot. Here’s my 2 cents worth.

#106

Okay, I finally took some time today to play around with this skin shader stuff. Needless to say, I didn’t come up with a shader that looks like skin, but I did come up with a shader that helps your textures to look like skin.

I can’t remember where I got the original shader from, I believe it’s a Colorizedtri shader, but it’s not one from this thread I don’t think. I did find that MTB’s Global lighting helps with this too, so if you don’t have that, then get it. I’ll post everything later, on how I achieved this. If anyone is interested that is.

Anyway, thank you everyone for your hard work and efforts. It has helped out a bunch of people!

I’ll upload the shaders and the lighting, if it’s OK with MTB, later.

From what I have here, if there was a way to bake out the material to texture, this would be the perfect color map. It needs work on the bump map though.

#107

Here are some results I was getting using the tri-shader. I prefer that one over the quad shader since its a bit more simple to mess with.

I have some other pictures of this in my zombie thread.

I was pretty happy with the results and it has a nice, soft, squishy feel to it.

#108

WOW, this is a fantastic thread, lots to learn on my end, but this is what I am looking for.

This thread blows my mind, and the work is superb.

Have to go and study it, I already know this is what I want on my models

Mandy

#109

Here is the zscript that you can use to get the skin material. It will load everything you will need for you. I was wrong about what material this is, it’s the Quad shader material, and it is really pretty simple to use. Mahlikus the Black provided the shader that I used to make this material. Thanks MTB!

Here are some tips that I think will help to make a better skin with this material.

  1. All of the sliders are already set for a good skin material. However, the main sliders that you might want to change are as follows:

Diffuse
Specular
Color Bump
Colorize Diffuse
Colorize Specular
High Dynamic Range

Here are two screenshots of how I have for two of the settings in the skin material.

  1. Your texture, as you paint, can have a ton of different colors. Skin has a lot of different things going on underneath, and with this material it really shows up well. However, I couldn’t get the translucency to work the way I wanted it too, so further testing is needed.

  2. The texture I painted underneath looks pretty wild in comparison to what I use to paint like. However, it’s not just the texture that makes this look the way it does, it’s the shader. So don’t feel that you need to stick with just skin tones on your textures. This is how my final texture looked for this head. Different, but effective. If I would have planned better, I would have used a lot more blues and greens to add the effect of veins under the skin. As it is, the color is a bit too dark, and doesn’t look as real.

  1. I haven’t tried adding much bump to this yet, so if anyone has any insight into how to add more wrinkles, and pores to this technique, then please feel free to share it.

Download the Zscript here. This script also contains my head modeling tutorial, so you can have something to practice with.
http://homepage.mac.com/chadtheartist/.Public/Tutorials.zip

#110

Having much fun with the colorizer trishader. The multiply switch in S1 is really handy, you can paint subsurface details as a texture. Realtime SSS, is flesh blobbing fun .

Here’s my skinthing.

skinthing.jpg

#111

Erm…when I try to download the ZScript on the 1st page it just shows up the actual script, rather than giving me a file to download. Could someone please tell me how to turn this into a file to whack in the ZScript player. Thanking you.

#112

Right click and then ‘Save Link As’ should do the job!
Lemo

#113

Thank you, Lemo.