Material Thread - Post your materials here?

[Kram1032]

this is the current matDB-replacement, until the matDB is finished. - so, no, it's *not
a tutorial, but a place to DL mats
oh, and as long as the material code isn't absolutely *final* (or at least as long as it's not sure, that the next 3 releases wont have any change in the material code), it's not too reasonable to make a tut, anyway.
The per-release-manual should be a good enough reference, *and* you have the exporters.

[WytRaven]

Just so it doesn't get lost:

Schott Glass Material Library for Indigo 1.0.1+

http://www.indigorenderer.com/joomla/fo ... php?t=2838

[CoolColJ]

Pure water

if you are using Indigo v1.01

then use this - copy and paste it in place of your current water code in the IGS scene file

Code: Select all

    <medium> 
        <name>MedWater</name> 
        <precedence>10</precedence> 
        <basic> 
            <ior>1.33</ior> 
            <cauchy_b_coeff>0.00000</cauchy_b_coeff> 
            <absorption_coefficient_spectrum>      
            <regular_tabulated> 
               <start_wavelength>0.34E-06</start_wavelength> 
               <end_wavelength>0.75E-06</end_wavelength> 
               <num_values>83</num_values> 
               <values> 
               0.0325 0.0264 0.0204 0.018 0.0156 0.0135 0.0114 0.0107 0.0100 
               0.0094 0.0088 0.0079 0.0070 0.0060 0.0056 0.0052 0.0054 0.0061 
               0.0064 0.0069 0.0083 0.0095 0.0110 0.0120 0.0122 0.0125 0.0143 
               0.0130 0.0157 0.0168 0.0185 0.0213 0.0242 0.0300 0.0382 0.0462 
               0.0474 0.0485 0.0505 0.0527 0.0551 0.0594 0.0654 0.0690 0.0715 
               0.0743 0.0804 0.0890 0.1016 0.1235 0.1487 0.1818 0.2417 0.2795 
               0.2876 0.2916 0.3047 0.3135 0.3184 0.3309 0.3382 0.3513 0.3594 
               0.3852 0.4212 0.4311 0.4346 0.4390 0.4524 0.4690 0.4929 0.5305 
               0.6229 0.7522 0.8655 1.0492 1.2690 1.5253 1.9624 2.5304 2.7680 
               2.8338 2.8484 
               </values> 
            </regular_tabulated> 
            </absorption_coefficient_spectrum> 
                              
            <subsurface_scattering> 
                  <scattering_coefficient_spectrum> 
            <regular_tabulated> 
               <start_wavelength>0.34E-06</start_wavelength> 
               <end_wavelength>0.75E-06</end_wavelength> 
               <num_values>83</num_values> 
               <values> 
               0.0104 0.0098 0.0092 0.0097 0.0082 0.0077 0.0073 0.0069 0.0065 
               0.0062 0.0059 0.0056 0.0053 0.0050 0.0048 0.0045 0.0043 0.0041 
               0.0039 0.0037 0.0036 0.0034 0.0033 0.0031 0.0030 0.0028 0.0026 
               0.0027 0.0025 0.0024 0.0023 0.0022 0.0021 0.0020 0.0019 0.0018 
               0.0018 0.0017 0.0017 0.0016 0.0015 0.0015 0.0014 0.0014 0.0013 
               0.0013 0.0012 0.0012 0.0011 0.0011 0.0011 0.0010 0.0010 0.0010 
               0.0009 0.0009 0.0009 0.0008 0.0008 0.0008 0.0008 0.0007 0.0007 
               0.0007 0.0007 0.0006 0.0006 0.0006 0.0006 0.0006 0.0006 0.0005 
               0.0005 0.0005 0.0005 0.0005 0.0005 0.0004 0.0005 0.0004 0.0004 
               0.0004 0.0004 
                </values> 
            </regular_tabulated> 
               </scattering_coefficient_spectrum> 
               <phase_function> 
          <uniform/> 
               </phase_function> 
            </subsurface_scattering> 
        </basic> 
    </medium> 
    <material> 
        <name>Water</name> 
        <specular> 
            <internal_medium_name>MedWater</internal_medium_name> 
            <transparent>true</transparent> 
        </specular> 

if not you can try this

IOR = 1.33

absorption
red 0.36
green 0.04 to 0.1 (higher is less green, more bluish)
blue 0.0143
values are for what they would be in the IGS file, so may need red/blue flipped around inside the exporter if done from there

scattering
red 0.0007
green 0.002
blue 0.0026



Gamma = 1 for both


and then don't add any bump map to the water mesh and pool surfaces - they slow rendering of caustics a lot!

[Whaat]

Thanks CoolColJ! I will be testing it and probably using this for a SkIndigo material preset. Great work!

[CoolColJ]

But wait...there's more


water with suspended particles 1mg m-3 concentration level

Code: Select all

   <medium>
        <name>MedWater</name>
        <precedence>10</precedence>
        <basic>
            <ior>1.33</ior>
            <cauchy_b_coeff>0.00000</cauchy_b_coeff>
            <absorption_coefficient_spectrum>     
            <regular_tabulated>
               <start_wavelength>0.35E-06</start_wavelength>
               <end_wavelength>0.716E-06</end_wavelength>
               <num_values>30</num_values>
               <values>
                0.16 0.165 0.175 0.185 0.19 0.23 0.26 0.28 0.27 0.25 0.24 0.21
                0.18 0.175 0.14 0.125 0.1 0.08 0.075 0.075 0.06 0.07 0.08 0.09
                0.1 0.13 0.15 0.1 0.065 0.03               
               </values>
            </regular_tabulated>
            </absorption_coefficient_spectrum>                     
        </basic>
    </medium>   
    <material> 
        <name>Water</name>
        <specular>
            <internal_medium_name>MedWater</internal_medium_name>
            <transparent>true</transparent>
        </specular>
    </material>

only absorption, no scattering values, but I have another water graph to convert that may do the trick, much more dirty though

Only the tabulated version for now, may be able to average out some RGB values

[CTZn]

Thanks thanks thanks CoolColJ ! Have more ?

Your examples are precious to get the grip on these new features !

[ViennaLinux]

indigo really needs a material Database where you can find the xml code and the images/textures for it.
In my eyes it makes no sense to post everything into the forum.

[Kram1032]

The point of this thread is, that it's temporary
The problem is, that the joomla-based site seems to be kinda messy, which slows the progress down to pretty much zero...

[dougal2]

indigo really needs a material Database where you can find the xml code and the images/textures for it.
In my eyes it makes no sense to post everything into the forum.

this was started but never finished.

also, with the fact that the material XML codes sometimes change, it'd be hard to maintain to produce consistant results across different indigo versions....

...unless, of course, the site was clever and held info like "colour" "exponent" etc and could generate valid code for different indigo versions.... hmmm *thinks*

[Kram1032]

...or you add a version number and the mats are downward compatible, by being converted, before the render starts...

...or both?

[dougal2]

might be a worthwhile project for the holidays, I could probably do it in a day or two.

Question is: can I be bothered ?

[ViennaLinux]

we can make a database with:

Works with version X.XX , X.YY , Y.ZZ etc.

then you can filter ... at least....

[joegiampaoli]

Im already working on one, sorry guys (for the past week), but I wanted to surprise you for new years eve.

I have it hosted here on my box, still as a test, Im preparing a new indigo material scene file, will unfortunatelly look a lot like another one floating somwhere on the net (if you know what I mean) but I like and understand the setup they use

for the meantime I have the site hosted here, no materials yet, I am still working on web related and finishing the preview scene

here's my link (bare with me I don't have an extremely fast connection)

http://indigo-materials.sytes.net

Remember no www before the domain it's a dynamic ip with page forwarding (for the meantime)

EDIT: heres my material scene (modeling not finished), I know..... it looks awfull lot like the competition, but I have been doing a lot of testing and it's extremely good for what it's needed, let's just stop the modeling, copying, lighting, compostion criticism and let start doing a database which is what indigo and a lot of us need.

[Stur]

It's not that awfull !
In fact, I like it. Maybe the lighting could be improved.
Good luck to achieve your work.

[joegiampaoli]

actually light looks cold, but I have to use the E white balance since its the closest to white and will make colors in materials more pure and true, the angle of light mesh has to be right on that spot since it creates some reflected specularity on the grey internal core, which is important, I also have a bigger and softer lightmesh on ceiling for ambient light.

I know some people wont like it, but I really don't care, I just want it to be a functional scene that works with most materials. This has to be done now.....

I'm glad you like it Stur