1. #46
    Senior Member Follow User Gallery
    Join Date
    Jan 2004
    Location
    China
    Posts
    260

    Default Make a new one but not cool enough!!!!

    Oops, take a look and try ! alienheart.jpg
    Attached Files Attached Files

  2. #47
    Senior Member Follow User Gallery
    Join Date
    Apr 2001
    Location
    Monster Island
    Posts
    1,893

    Default

    Quote Originally Posted by Thomaskl
    But, as i can imagine, Zbrush cannot dirstort refractions..
    ZBrush can distort refractions if you turn down the RGB level of your tool and use the "refract" slider in the draw menu. A refract of 0.33 is equivalent to an ior of 1.33 (water) and 0.5 is equivalent to an ior of 1.5 (glass).

    Of course you'll need a background to draw over or else you won't have anything to refract.

    You can then use the blur brush to blur your refractions.

    Maybe someone can try that as a starting point?

    I don't have ZBrush with me at the moment.
    Last edited by WingedOne; 02-10-06 at 10:44 AM.
    The direction of companion mind should cooperate with rescue at lighting of a red lamp,or a buzzer. Please give me connection from a nearly extraordinary telephone.

  3. #48
    Senior Member Follow User Gallery
    Join Date
    Aug 2005
    Location
    Poland/Szczecin
    Posts
    1,911

    Default

    Quote Originally Posted by smileman
    Oops, take a look and try ! [/ATT]
    smileman, i think the point was to make fake sss, not a cool glowing material :|

  4. #49
    Senior Member Follow User Gallery
    Join Date
    Jan 2004
    Location
    China
    Posts
    260

    Default ok la, I try more !!!!

    Better ? slim.jpg
    Attached Files Attached Files

  5. #50
    Senior Member Follow User Gallery
    Join Date
    Jan 2004
    Location
    China
    Posts
    260

    Default

    little question, how to do transparency between two layers in Zbrush ? I'm stupid !!!!!

  6. #51
    Senior Member Follow User Gallery
    Join Date
    Jul 2002
    Location
    Copenhagen
    Age
    45
    Posts
    2,561

    Default

    That looks very good Thomaskl. I tried to replicate some of the render effects but it is simply not possible to match a physically accurate render engine using the ZBrush renderer, at least not without some tricks and some 2D editing. But on the bright side the following picture was completed in ZBrush in just under an hour, including a slight color and levels adjustment in Photoshop. What was your render time again Obviously I do not have quite the same quality, but still.

    The key to the following render is not the material, although it of course has an effect, but the use of baking the material/render generated colors multiple times with tweaking of the material and lights in between. It is a bit difficult to explain but I hope the step by step below is clear enough.

    Jantim: It is possible to have an in focus section at the middle using ZBrush's Depth Cue. Take a look at the curve below.

    Intestines_final.jpg

    Intestines-step-by-step.jpg
    Mark

  7. #52
    Senior Member Follow User Gallery
    Join Date
    Oct 2004
    Location
    Germany
    Age
    39
    Posts
    234

    Default :-)

    It`s so damn cool to see, how you guys are are trying to approach the perfect SSS feel in Zbrush.
    As i started thinking about doing an SSS Setup, i was unsure about the way, vray handles SSS, because it is based upon blurred refractions, internal fog and the IOR of the material. Im not sure, if this is the correct physical way of simulatiing a real light distribution under a surface, because i don`t own the brain, which is really needed to understand the complex theorie behind this special surface effect. My intrest resultet out of a little anciety of SSS, because the whole CG Community is talking about that for a couple of years, and i, for myself, wasn`t able to get the plot in depth. So, i always was a little afraid of that phenomenon.
    The ways, the postet materials are working have one thing in common. They are all workarounding that "voodoo"-CG SSS Thing. I do like Jantims approach, because it does not need so much post work, as the approach TVEyes uses for his final result. At the end, you could render the image with any kind of linear material and do the whole SSS Effects in PS by painting. But respect and thx for the work you invested in this version. It`s a cool result, man !

    I had a hard day animating, and i am quite tired now (had some drinks, too..:-D )

    Have fun !

    Thx a lot !
    Regards,
    Thomaskl
    **reduce to yourself**

    Thomas Klieber
    Head of Animation

    Goebel und Mattes GmbH


    my site

  8. #53
    Senior Member Follow User Gallery
    Join Date
    Jul 2002
    Location
    Copenhagen
    Age
    45
    Posts
    2,561

    Default

    Don't get me wrong. I am also praying that Jaintim can come up with a material that can do it in 1 or 2 passes ( pretty please Jantim, you don't need to sleep this weekend ). But having said that, the multiple baking method is not so difficult, except if you have had a couple of drinks Thomaskl

    I think "drinks" was the magic word. I am off now. Have a nice weekend everybody and I hope you come up with some cool materials/workarounds to the SSS effect.

    Ron Harris: Cool picture. I really like the effect of both versions. As you can see from my picture I would prefer some more contrast but the general color range looks great.
    Last edited by TVeyes; 02-10-06 at 02:06 PM. Reason: spelling
    Mark

  9. #54
    Senior Member Follow User Gallery
    Join Date
    Jan 2004
    Location
    China
    Posts
    260

    Default

    TV eyes thank you!

  10. #55
    Senior Member Follow User Gallery
    Join Date
    Apr 2001
    Location
    Monster Island
    Posts
    1,893

    Default

    Here's an experiment I just tried using the technique that I mentioned up above (if you set your RGB to less then 100 in the draw menu, a slider for refraction becomes available).

    I duplicated the background layer and rendered it and baked it before placing the object on it. Then I went back to the original layer for rendering after the object was placed on the duplicate layer. Otherwise, my object wouldn't be casting a shadow onto the ground.

    Preliminary picture with refraction only (all ambient, no diffuse, some specular):

    SSSTest1.JPG

    Here I blurred the refraction with the blur brush and then fogged it in a little (mostly in the middle) with the simple brush. I decreased the ambient and raised the diffuse levels a little bit:

    SSSTest2.JPG

    Here's the final render. For the main ingredients of this material I raised the anistropic diffuse up to 0.6 and the occluded ambient up to 0.5. I used a light blue color for colorize ambient plus a tiny amount of cavity shading to bring out the details a little bit.

    SSSTest3.JPG

    My material is enclosed in the Zip file attached to this post.
    Attached Files Attached Files
    Last edited by WingedOne; 02-10-06 at 08:15 PM.
    The direction of companion mind should cooperate with rescue at lighting of a red lamp,or a buzzer. Please give me connection from a nearly extraordinary telephone.

  11. #56
    Senior Member Follow User Gallery
    Join Date
    Mar 2005
    Location
    dallas
    Posts
    271

    Default

    nice work!!! its quite confusing! wish i new how to do stuff like that!!!!

  12. #57
    Senior Member Follow User Gallery
    Join Date
    Mar 2004
    Location
    the Netherlands
    Posts
    1,260

    Default

    Well Thomaskl..see what you did !..now everyone's weekend will be spend tweaking materials and rendersettings

    DarthWayne : you need a backlight and/or a radial light to get the best effect of SSS..but remember the material-settings "mimic" the SSS-effect, that is also its limitation !

    Wingedone : "Cool'...your material looks like transparent wax.

    marcus_civis : I never used glow in my materials-good idea-i have to think about it !

    smileman : i infected you wit the material-bug -or worm, in this case-as well

    TVeyes : Man , you seem to know every technical aspect of this program
    I tried to get the effect of the focus in the middle by doing a two layer render and baking the first one..but then the "depht of field setting" of the second layer just ignored the "baked"pixols of the first render and blurred the whole scene..
    I someone can create a SSS-material it must be done by writing a new code for such a material..i'm just a button pusher and a setting adjuster
    and i don't think it can be done with the setting of the materials to this point!



    Oh yes ,stalsby..it is confusing..in the beginning..and even after a while !

    jantim

  13. #58
    Senior Member Follow User Gallery
    Join Date
    Aug 2005
    Location
    Poland/Szczecin
    Posts
    1,911

    Default

    Cool, i didnt know you could do refractions in zbrush Think i will find this usefull one day this thread roks
    cool.jpg

  14. #59
    Senior Member Follow User Gallery
    Join Date
    Mar 2004
    Location
    the Netherlands
    Posts
    1,260

    Default

    marcus_civis...using glow in your material was a nice idea...

    plasticglow02.jpg

    and in this render i pasted a "glow" channel and a....can u guess ?

    plasticglow04.jpg

    jantim

    if u want to try...here's the material
    Attached Files Attached Files
    Last edited by jantim; 02-11-06 at 10:52 AM.

  15. #60
    Moderator Follow User Gallery
    Join Date
    Jun 2004
    Location
    UK
    Posts
    11,462

    Default

    jantim,
    Looks great! Environment reflection?

Page 4 of 8 FirstFirst 1234567 ... LastLast

Posting Permissions

  • You may not post new threads
  • You may not post replies
  • You may not post attachments
  • You may not edit your posts
  •