Jump to content


Photo

Sub Surface Scattering Black

Cant remember how to avoid t

  • Please log in to reply
7 replies to this topic

#1 detbear

detbear

    Chronic Visualist

  • Craftsman/Mentor
  • PipPipPipPipPipPipPip
  • 896 posts
  • - - - -

Posted 03 September 2014 - 11:04 AM

Hey Everyone.

 

I'm in V18 and trying to get the SSS on a character to render without it looking black/ dark.

 

It looks similar to when you try to render transparency with real AO and the "transparent AO" set to "Off"

 

Anyone know how to get the SSS on without looking like black wax?



#2 detbear

detbear

    Chronic Visualist

  • Craftsman/Mentor
  • PipPipPipPipPipPipPip
  • 896 posts
  • - - - -

Posted 03 September 2014 - 11:28 AM

So I think it must be the fact that I have GI on with the "Color" settings.

 

Am I right that Global Illumination is the problem?



#3 Rodney

Rodney

    A:M Bot 14309

  • Admin
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 6975 posts
  • Rodney Baker
  • *Admin*
  • Illinois (not Japan)
  • subscriber
  • Windows

Posted 03 September 2014 - 12:29 PM

I believe historically, when using SSS, black areas have been a sign of inverted normals on patches.

 

I also recall that someone (Yyves) once said that SSS and AO worked at odds with each other.

 

If you post an image of the results you are seeing that should tell the tale.


"Animation is 90 percent hard work.  The other half is entirely mental!"
See my effort to think about the art of animation at: My Blog
Want to learn A:M? Start TaoA:M

#4 Fuchur

Fuchur

    PatchWorker

  • Hash Fellow
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 5006 posts
  • Gerald Zum Gahr
  • Karlsruhe, Germany
  • current
  • Windows

Posted 03 September 2014 - 12:34 PM

Are you rendering to file / final or progressive? In my experience, SSS only works if you render to file and will otherwise result in black rendering groups (the whole group just plain black).

 

See you

*Fuchur*


"I know, that I don't know."
See my projects, tutorials, reviews and join the German Animation:Master-Community at
www.PatchWork3d.de

Name: Gerald Zum Gahr, alias Fuchur
What stands "Fuchur" for?

Do want to see my favorite A:M-images?
Best of A:M collected by Gerald Zum Gahr

Searching for a *.X-Exporter(DirectX) or a *.dts-Exporter(Torque) for A:M?
Exporter Page

And how can I export to *.FBX-files or other 3d- / game-engines?
FBX-Pipeline to Unity3d / DirectX-Pipeline to Quest3d

Need more converters? *.obj OBJ), *.lwo , *.act or *.dxf ?
Arthur Walaseks' Exporters

Searching for great and free plugins?
www.sgross.com by Steffen Gross

You are searching for tutorials? More video- and text-tutorials can be found here:
Tutorial section of PW3d

You want to make your own video tutorial?
Recommended Tools and Step By Step Instructions

"R M B" stands for "Right Mouse Button"!

#5 John Bigboote

John Bigboote

    that one guy

  • Hash Fellow
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 6390 posts
  • John Bigboote (aka Matt Campbell)
  • Detroit, MI USA
  • v18
  • Windows

Posted 03 September 2014 - 12:51 PM

I thought that in V18 the preview render for SSS was fixed... but I usually have to render to file to see the results. I guess keep away from GI(A:M has GI???- I think you mean Global Ambiance...) SSS needs to be traditionally 'lit' with lights to generate it's effect... to that end- some people will place a light BEHIND the SSS object(I use this light on a light-list so it does not blow-out my scene) to 'punch-up' and 'CONTROL' the SSS effect. F'R instance... if you wanted to make a waxy candle with an SSS effect at the top being generated (in effect) by the fire- you would want to place a light behind the candle toward the top... the light would help to control the amount of the SSS effect combined with the wax-group's SSS settings.

 

My project for this SSS candle is here on the forum somewhere... I think. This render utilized SSS, DOF, GLOW, particles, volumetric light and Jenpy's FASTAO.

Attached Files



#6 detbear

detbear

    Chronic Visualist

  • Craftsman/Mentor
  • PipPipPipPipPipPipPip
  • 896 posts
  • - - - -

Posted 03 September 2014 - 01:59 PM

Yeah.....sorry about that....I guess I meant the Global Ambience.

 

The scene has a combination of lights along with the Global Ambience.

 

I did render it to file.  AFter turning the GA back to zero, it did capture the SSS.

 

 

But I'll have to re-light things.



#7 KJ'd Beast

KJ'd Beast

    Apprentice

  • *A:M User*
  • PipPip
  • 119 posts
  • Keith J. Brett
  • Fort Lauderdale, Florida
  • subscriber
  • Windows

Posted 03 September 2014 - 05:52 PM

John,

 

That was really a nice candle animation all around.  Very subtle.  Is the dripping wax an animated texture map or actual geometry?


  • John Bigboote likes this

#8 John Bigboote

John Bigboote

    that one guy

  • Hash Fellow
  • PipPipPipPipPipPipPipPipPipPipPipPipPipPip
  • 6390 posts
  • John Bigboote (aka Matt Campbell)
  • Detroit, MI USA
  • v18
  • Windows

Posted 04 September 2014 - 09:05 AM

John,

 

That was really a nice candle animation all around.  Very subtle.  Is the dripping wax an animated texture map or actual geometry?

Thank-You Keith! very simple animated geometry. the fire at top was too.






0 user(s) are reading this topic

0 members, 0 guests, 0 anonymous users