ISL XPeriments

[galinette]

tinfoil, also done with posOS based bump:

Code: Select all

def eval() real :
  let 
    p = posOS()
  in
    fbm(1, p * 100.0, 1.2, 2.0, 6) * 0.002

Nice sandwich wrapping aluminum, just lacks the mustard traces.

[juan_irender]

Oak Wood shader uploaded to materials gallery:
http://www.indigorenderer.com/materials/materials/1183

Ciao.

[juan_irender]

Explanation of parameter roles in Oak shader (they are very the same as in the original shader):
- Ringfreq - mean frequency of ring spacing
- Ringunevenness - 0=equally spaced rings, larger is unequally spaced
- Grainfreq - frequency of the fine grain
- Ringnoise, ringnoisefreq - general warping of the domain
- Trunkwobble, trunkwobblefreq - controls noise which wobbles the axis of the trunk so that it's not perfectly on the z axis.
- Angularwobble, angularwobblefreq - warping indexed by angle about the axis used by the shader.
- Ringy, grainy - overall scale on the degree to which rings and grain are weighted. 0 turns one off, 1 makes full effect.
- Sharpness - substitutes filterwidth estimation: its of no use in Indigo. Values < 1 are reccomended.

Ciao.

[juan_irender]

Well, after this wood shader, I´ll focus on other material genre...

Ciao.

[wlf_alex]

Excelentemente, Juan !! +10 and muchas graсias !

[juan_irender]

Gracias a ti, Alex!

[juan_irender]

A new shader: a brick one.
It comes also from Larry Gritz.
Tons of parameters for configuring the look. You see, the shader used for the wall, is the same used for the floor...

Ciao.

[juan_irender]

A different type of shader.
A ridged multifractal displacement one. Algorithm by F.K. Musgrave.
I´m working on additional ISL code for coloring the mountains by height.

Ciao.

[OnoSendai]

Nice.
There's a multifractal function built into ISL by the way.

[juan_irender]

Nice.
There's a multifractal function built into ISL by the way.

Hehe, ¿which one?

[OnoSendai]

Same one probably. Based off the book Texturing and Modelling, a Procedural approach. I think the chapter was by Musgrave.

[juan_irender]

Same one probably. Based off the book Texturing and Modelling, a Procedural approach. I think the chapter was by Musgrave.

The same book I´m using, but I´m asking you for the name of this ISL function.

Thanks!

[OnoSendai]

Same one probably. Based off the book Texturing and Modelling, a Procedural approach. I think the chapter was by Musgrave.

The same book I´m using, but I´m asking you for the name of this ISL function.

Thanks!

multifractal.
Sorry it's not documented yet. I started but libreoffice started deleting my images so I gave up.

Check out the testscenes here:

http://www.indigorenderer.com/forum/vie ... =1&t=12120

[juan_irender]

Thanks, Ono .
Looks very nice, I expect you can document these functions soon.

Ciao.

[juan_irender]

Well, some colormap applied to mountains height...