ISL woods !

[CTZn]

Yes it is similar to the wood texture in Maya (it's volumetric) and doesn't rely on good UVs to be properly drawn.

Therefore you would see no pinching at poles on a normal sphere. Perfect for one-piece sculptures.

Problem is that I wasn't able to get 3d bump, just got to figure that one out. IIRC eval(vec3 pos) real is not an option there.

[FoXar]

Very interesting topic! I'll make to follow this one, looking forward to the final results! Last image is terrific!

Cheers

[CTZn]

Thanks FoXar !

Actually Lemo, 3d shaders do look better on complex models:

bump is 2d (UV based). Model courtesy of unknown, thanks !

Well I think I have something different to do with IGM's now ...

[Lemo]

Just too bad we still need the UVs for the bump
But this is going to help a lot!

[CTZn]

Back to 2d woods, here's my candidate for a release.

You may find that aldbedo and bump have the same beginning in their code, wich can be edited into one channel and pasted to replace its equivalent into the other channel.

Actually the current look isn't my favourite but really it's meant to be tweaked (got a little doc within).

Will make a better one when we have shared parameters

the (not yet) shared parameters:

def paramScale() real :
# global scale
# set this first for your scene.
4.0

def noiseScale() real :
# additional perturbation's scale
# relative to global scale
175.0
* paramScale()

def noiseAmount() real :
# additional perturbation's amount. zero = noise off
0.1
/ paramScale()

def paramRatio() real :
# length ratio.
# Set to its reciprocal for a vertical essence (1.0 / value)
8.0

def paramIterations1() real :
# number of veins (age)
8.0

def paramIterations2() real :
# number of sub-veins (veins per veins)
3.5

def paramTension() real :
# tension (distribution) of veins
# min: 0.0 (flat. Defeats shader)
# max: 5.0 +/- 1
# neutral: 1.0
1.1

def complexity() int :
# level of intrication of the features
8

Albedo specific:

# RGB colors (2)

def col1() vec3 :
vec3(0.4, 0.2, 0.0)

def col2() vec3 :
vec3(0.5, 0.3, 0.1)

Bump specific:

# NOTE:
# For the two following parameters,
# if either is equal to zero
# the material's bump should be switched off
# for performance concerns

def paramBumpRoughness() real :
# wood finish/alteration
# 0.0: no bump (perfect finish)
# 1.0: no finish (rough surface)
# is also multiplier for the bump gain below <- No it isn't
0.15

def paramBump() real :
# centimeters. Yes sir, it's bump value.
# again switch bump off if zero
0.05

Try them out !

[CTZn]

I'm not sure about the divider in noiseAmount(), might as well let the value free.

Dev's comments are welcome !

[Meelis]

I like the wood_2d_02_rc5.jpg
rc4 is too plastic and has to litle black contrasty stripes.
rc5 is deeper.
Perhaps an variatsioon that has some additional blend map that regulates larger quantities between diffuse and phong variatsions.
But the rc5 as highly polished and finished wood looks good.

Amazing work

[Lemo]

Awesome CTZn
Best setting is probably something between those two pics IMO
For example, if you want to make a wooden floor, is there some randomness for every plank of wood to look different?

[CTZn]

No, it's just wood. Tiles will come obviously

I'm hoping that some courageous people will post their own takes

[CTZn]

Meelis: the exponent will be dealt with when we have shared parameters, wich are unified UI controls. It is arleady complex enough to manage

For now phong ior and exponent are easy to tweak, you can simulate roughly polished wood as well as a varnished one.

[Polinalkrimizei]

This is awesome!!!!

[pixie]

Now that we do have shared parameters, what are you waiting to release the better wood material mister?

Great job BTW

[CTZn]

Now that we do have shared parameters, what are you waiting to release the better wood material mister?

Great job BTW

I have the quarter of a sinusoidal wave to stick between two marble tiles arbitrarly spaced The tiled marble is prioritary, I'm getting close.

Shared parameters are really handy.

Thanks pixie.

[CTZn]

A small update, the material has parameters now.

I'm still to tweak their range before I can upload it to the matdb, plus a little tinkering maybe.

I feel like an a$$ because Juan is also working on procedural woods By the way Juan:

Feel free to use this thread for your owns !

PS: it's really the same material than above, just with different settings. It's up to you now with parameters.

[juan_irender]

I feel like an a$$ because Juan is also working on procedural woods By the way Juan:

Feel free to use this thread for your owns !

Hi, CTZn!
Your wood shader looks very good, it produces some beautiful patterns, I like it. It has enough detail to be used in production pics.
BTW, thanks for your invitation!

Ciao.