Blender Procedual Textures in Lux

[Radiance]

hey,

i also think that maybe SMISRA should wait till we've settled these 2 as 'perfect',
it will prevent him implementing some thing unfinished 10 times

greetz,
radiance

[Dade]

x mfoxdogg: yup, it would be far easier to read.

One thing which is strange is that they only implement FloatTexture ?

I think we should add a SpectrumTexture definition too.
We should supply 2 Textures as params to modulate between. (make it like the mix texture)
I don't want to do this now as i don't know if you have this planned dade, please let me know.

I just wrote only the FloatTexture because you can achieve the same result of the SpectrumTexture by using the "mix" texture, however if embedding the "mix" makes exports/users life easier we can add this feature for sure, no problem (do you add this one ?).

do the different noisetypes have different options ?

The amount of Blender procedural texture options is quite insane, I have a little knowledge of Blender and I get easy lost there. In my opinion the major work now is mapping the parameters, the default values and choose parameter names.

Looking at the code, all noise functions accept only a 3D point as parameter so I guess they don't have different options.

[mfoxdogg]

only the musgrave noise basis and 1 of the voronoi noise basis adds or substracts options, the other noise basis's don't, Great work so far, im loving it

[Radiance]

hey dade,

if you want / have time you can do these fixes,
otherwise i'll do them tomorrow or day after, i'm a bit overloaded with a project for work.

greetz,
radiance

[Dade]

if you want / have time you can do these fixes,
otherwise i'll do them tomorrow or day after, i'm a bit overloaded with a project for work.

I mapped all Blender parameters for musgrave and marble. At http://www.luxrender.net/wiki/index.php ... _emulation you can find the correspondence between Blender UI buttons/fields and Luxrender texture parameters. Fixed a couple of missing things in the sources too.

[Radiance]

Hi,

Nice work dade,
i'll run some tests tonight and if all is well i'll get SMISRA going with the infos he needs to do the rest

Greetz,
radiance

[Radiance]

ok,

nice work dade

i've ran some tests, corrected some typos in the code and scene file docos,
and also added the blender_wood texture to see how much work it is.

it was really simple, it's just parsing the params and handing them over to the blender lib/code

i'm going to clean up a bit more, add support for spectrum textures and then i'll hand over the job to smisra for the implementation of the rest of them.

i've also added support for the 3 implemented ones (wood, musgrave, marble) in luxblend.
the params are %100 identical to blender and behave %100 the same. (made heaps of tests)
even the mapping and random pattern is identical. perfect

there is a slight difference in gamma but according to my measurements that is normal as we're using
gamma correction and tonemapping. (you can tweak it with the contrast and bright params if you want)

i'll check in my changes in couple of hours...

greetz,
radiance

[Radiance]

here's the result of more play/testing.

some form of laquered dark wood.
i'm getting the hang of it.

it uses a mix of pbrt fbm noise textures modulated by blender_wood with various settings/channels and scaled in the Y direction so it seems 'cut'

greetz,
radiance

[Dade]

i've also added support for the 3 implemented ones (wood, musgrave, marble) in luxblend.
the params are %100 identical to blender and behave %100 the same. (made heaps of tests)
even the mapping and random pattern is identical. perfect

Yup, it should be quite useful for all Blender users and any way having more textures will be useful for everyone.

there is a slight difference in gamma but according to my measurements that is normal as we're using
gamma correction and tonemapping. (you can tweak it with the contrast and bright params if you want)

I have spent some time investigating this problem too. I was wondering if some kind of parameter was missing but my conclusion was the Lux rendering is just too different from the Blender one to pretend a pixel-by-pixel match ... I guess it is a feature not a bug

[Radiance]

Hey,

I commited the blender_wood.
I've still to write a more general interface which also allows these to be used as a the SpectrumTexture.
Once this is finished i'll communicate the go signal and some getting started infos to SMISRA.

greetz,
radiance