For Chikega - SSS

#37

Originally posted by chikega
[B]

The effectors seem to be surface based and not volumetric. So, the same result could probably be achieved with image maps - but it was interesting to play with. Now that I think about it, a grey scale image map could probably be used to vary the translucency or, in this case, the thickness parameter as in G2 tests:

[/B]

Great tests, Gary!:thumbsup:

I notice that you’re using translucency attenuation to simulate the eye, but this is a surfaced-based trick and won’t hold up when the object is rotated (I know you’re aware of this). Have you tried placing a separate eye object (actual geometry) inside the fetus? It should prove to be more accurate.

BTW, MetaEffectors are volumetric. The WeightSpot shader (really an operator) is passed a spot from the renderer, and that spot just happens to be on the surface of the object. To the point, the renderer (or target shader node) isn’t sending a volume-based point, in this case.

Looking forward to the next tests;})

-lyle

#38

chikega,

I started yesterday with some procedural noises, and I will look what I can come up with - it will take some time though.
Most of the Lightwave-ones are possible, but the C4D stuff with the funny names is just about the same but adapted to the C4D-material system that didn’t support real layered textures up until the latest version. Bhodi|Nut, the guy who did them, sold those as seperate plugin-shaders called “Smells like Almonds” until Maxon bought them… They tend to buy half of their stuff from others recently :slight_smile:

The main problem with procedurals in messiah is currently the bump channel, that is acting completely weird. The texture is visible on every other channel, but as soon as you plug it into the bump channel, it’s gone and does nothing…
Daniel, the guy who did the Darktree shader, ran into the same problem and Lyle gave him a hack-solution that I will try to implement too, but it is very strange and seems to me to be the main cause that makes bumps from procedurals in messiah look weird…

So I tend to wait for the next patch…

#39

Cool Thomas!
I am a big fan of procedural textures too!
BTW ( Lyle :wink: )the it would be cool to use those textures to drive some deformation ( mesh displacement )that we can tweak in viewports ( basically procedural modeling ) .

#40

chikega, you’ve motivated me :thumbsup: so I’ve started some experimenting of my own.


#41

Very cool FB_Turbine - I’m glad others are chiming in - the more the merrier:beer:

#42

I don’t have anything useful, but I think we need a sticky “Render Settings” thread. This is good stuff! :thumbsup:

#43

Here’s a quick spin of the elephant.

elephant anim 975kb QuickTime

#44

this is mine with lw,no plugin
it is a animation

#45

This is with much less transparency.
elephant anim2 1.1mb QuickTime

#46

FB_turbine: Thanks for posting those - I like the second one better - has a more substantial feel to it even though it’s not as transparent.

penny1: Nice maggot:) Looks like you’re using the old Luminosity channel trick.

For those that are interested - a new discussion group has been created by Glen Miller. It deals with just the rendering side of messiah:Studio. So, if you’re interested:

http://groups.yahoo.com/group/MessiahRender/

:thumbsup:

#47

I decided to get back to basics by doing some real world observations on the SSS effect … essentially an ongoing exploration of simulating reality with various apps including messiah:studio …

http://www.3ddmd.com/SSS.htm

:slight_smile:

#48

the other animation render by lw without plug in

#49

.mov screenshot

#50

Nice render of the candle, but the hand looks totally fake.

wow… this message system made clones of my post, and I didnt even hit “send”…

#51

good!!!:bowdown: :bowdown:

#52

Originally posted by penny1
.mov screenshot

Those are really nice test renderings, Penny1. You should really consider posting those on the LW forum for other LW’ers to see. Maybe a description/tutorial on how you achieved the volumetric SSS. Looks like OGO_Hikari and you say without plugins - very nice. :slight_smile:

#53

Originally posted by jimpajammer
Nice render of the candle, but the hand looks totally fake.

uh… it’s a photograph, jimpajammer.:hmm:

#54

SSS works on transucent materials and one of its parameters is the viewing angle as well as the light angle. So, in many cases, this can be “faked” using gradients and tweaking.
As long as it looks good, no plugins are necessary.
However, in the cheating cases, some weaknesses are encountered.
Nothing surprising :wink:

#55

Originally posted by Panikos
SSS works on transucent materials and one of its parameters is the viewing angle as well as the light angle. So, in many cases, this can be “faked” using gradients and tweaking.
As long as it looks good, no plugins are necessary.
However, in the cheating cases, some weaknesses are encountered.
Nothing surprising :wink:

Actually, what makes Penny1’s embryo interesting is the apparent depth of the eyeball … I’ve come to find out that this is done by rendering out its depth buffer and applying that to the embryo in the luminosity channel. I’ll have to try that out with messiah.

This sample was done by Larry Shultz using the same technique.

http://www.3dtrainingonline.com/examples/embryo.mov

:slight_smile:

#56

I thought I’d bump this up for those who haven’t seen what messiah 1.5’s SSS implementation is capable of. 2.0 should be even more interesting. :slight_smile: