Behold: Project Chanlum

[sanciok]

well this is SWEET!!!
POST THE FILES!!!!!!!!!!!
:applause: :applause: :buttrock:

[Kotayus]

wow...thanks! i wasnt expecting a "SWEET!"

Thanks for the comment.

[sanciok]

yes... BUT.... the files??

[flingster]

cool...this is what i was talking about...top job.

how about more tests...more results...more pics..

offset?
sample type?
stocastic/gausian/shadow? huh.
do you use it in more than one channel?
etc

either way..if you post files...we could all come up with a set of results based around the same file which could be useful...then post results.:beer:

Kotayus : nice work...bud...thanks for taking the initiative..:thumbsup:

[Mentat7]

:scratching head: OK...I give...where do you get Chanlum??

[Kotayus]

well there wasnt a whole lot to it.

MATERIAL:

Color= orange.

Luminance: Texture=Chanlum
Mix= Multiply.

Chanlum Settings:
Samples=64
Initial Offset=1.5
Sample Radius=20
Sample Type=Area (gausian and shadows checked)

Transparency: Texture=Fresnel
Mix= Multiply.

That was all.

the others, i was just messing around.

Fling, Check PM's

[Kotayus]

http://www.happyship.com/lab/chanlum/chanlum.html


Its pretty groovy.

[Kotayus]

With Chanlum shaders:
http://www.metafex.net/imagehost/chan.jpg


Without:
http://www.metafex.net/imagehost/nochan.jpg

[Per-Anders]

if you want chanlum to work, all lights must have shadows enabled for the chanlum object, otherwise it will appear white as in the top right hand image.

chanlum is nearly always just put in the luminosity channel, though you can get good results in the bump channel or at least intersting results.

[Kotayus]

thanks sadie...i didnt know why it was so bright....

[Mentat7]

Edit...nm

[Kotayus]

Oh my god, this is so sexy...

http://www.metafex.net/imagehost/chan3.jpg

[EyeKyu]

^That one's the shiznit

[flingster]

like the last one...not sure about ring though.
what setting did ya use?

like the way you did the four way comparisons v cool. also v useful visually.
:beer:

[flingster]

btw Kotayus: if you want the file hosting..just pop me an email and i'll load it up for everyone.
:thumbsup:

[LucentDreams]

just out of curiousity what effect are you trying to come up with. other than the sphere, I don't see what the effect is your trying to achieve.

Heres my recent test on a SSS effect.

http://cgi.third-era.com/~kaiskai/misc/tstlcFINAL.jpg

[flingster]

is that two spheres?

[JIII]

Sweet, kotayus can't you just post a zip file?

I mean you have the web space I know.

yeah this is pretty darn nice looking dude.

great work.

[LucentDreams]

no, one sphere with a weird hypernurbes polygon object inside.

[flingster]

damn......:bounce:
even more annoying...

[Siddhy]

slightly offtopic but speaking of SSS you might have a look at manni1979s SSS-Fake without any plugins: http://www.isis.de/members/~cisenburg/presets.html

It's in german but rather self-explanatory i think :)

Cheers Siddhy

[LucentDreams]

dunno doesnt' really look SS to me, btu cool shader all the same.

[sanciok]

Originally posted by Kaiskai
dunno doesnt' really look SS to me, btu cool shader all the same.

I totally Agree with you Kai... it just seem a Fresnel....:shrug:

[prayas]

really cool Kotayus. I tested Chanlum on different characters. Mostly use it for skin. Seen some strange behavior when using it with radiosity in the scene allthough i kept my shadow casting light in. Just added the HDR Spheres and received many strange reflections on the skin shader.

Anyone knows how to get rid of this?

P..:

[flingster]

nope...can you post a pic of this problem please.
cos last night messing about i was getting strange ridges at the edge of light contact on surface...would like to see what you mean...unfortunately i didn't keep my tests from last night so i can't actually show you what i mean...but the answer to your problem my affect mine...:thumbsup:

[LucentDreams]

hmm only thing I ever did chanlum with radiosity was old moose renders, don't seem to remember issues but would like to see what the errors look ike. Chanlum is great for things like Velvet and skin, for dep SSS effects like mine you really need to stick with Translucent, especially since it works with transperecy with far more control the banj.

[Kotayus]

Kai, i can see where it the question would be: "What are you trying to accomplish?"

And the answer is: Im trying to understand HOW it works. I also can see what you mean, If i want to understand it i should understand how the light would react in the real world, but i am just on a quest to understand the plugin a little better. I hope you take no offense to this, as i completly respect you and your opnions, but just because its a SSS simulating plugin...doesnt mean thats all it can be used for...i think its a nice effect either way :thumbsup:

[LucentDreams]

ahh I wasn't talking about how real SSS works I"m talking learn how chanlum or any shader for that matter works. and chanlum is only good for one SSS effects, and thats light surface stuff like sking and maybe extremely hard marble.

basically what the shader does is wrap a little of the light around the object according to its offset that you put in. so an offset of 8 will basically extend the illumination around the object about 8m.

[flingster]

can anybody give me an example of settings they used for various object like:

1) peach fuzz, velvet

2) leather

i mean these are clearly different effects, and understanding how you would go about simulating there effect would be useful...because i could then expand from that point..and begin experimenting with more success.
:wip:

[flingster]

:surprised
dunno what this is....just playing.
high sample, high offset

[Kotayus]

I have made a special tutorial section on cinefex, check it out. Its not complete but i just uploaded the content so...it have more in the next couple days.

Clickeh (http://www.metafex.net/cinefex/tutorials/projectchanlum/)

[pasto]

Hi, I am triying to do sugar texture (white sugar), do you think Chanlum could help or anything else ?

My result so far is not very realistic.


cheers
pasto

My first try with chanlum :
http://pasto.tv/001.jpg

[prayas]

The image i was talking about. Where do these reflections come from? If i exclude the chanlum channel there are no reflections.

http://www.prayorpanic.com/_up_data/radio_07.jpg


P...:

[LucentDreams]

I"ve have no clue what would be doing that. whats chanlum's settings and what types of shadows are you using?

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