Kyeo's Node Library Sketchbook

oeykmiih · May 22, 2024, 8:45am

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Hey there,

I’m in the proccess of building a material node-based library, and so was in need of a test scene, that also might document the process in a more interesting way. Decided to recreate one of my favourite architecture projects (found it on ofhouses.com, great archive)

Mind you, some changes are intended, but will try to also have a more accurate version in the end. Anyway, I’ll keep posting the progress:

Edit: picture order
Edit2: change post purpose, add comparison slider

oeykmiih · May 28, 2024, 9:46am

2024-05-28

Got around to mess with a procedural (wood) plank concrete material. Maybe Doka next?

Changed the “bump standard” in the library, height goes from -1 to 1 so every pattern/texture can be mix and matched — I essentially multiply the original normalized height [0-1] by a value between -1 to 1 (usually within millimetres) and add all of them. Then connect the already scaled height into the node group wrapping a bump node. This supports both positive and negative numbers for bump, mimicking how displacement works.

oeykmiih · May 28, 2024, 10:58am

Just realized I have not mentioned the way I’m approaching this library, think of this as an informal design doc for myself.

For the nodes graphics I’m using this addon (still in beta) by @draberf. Had to convert to png because Discourse seems to mess with it’s contents

Guiding Ideas

Nodegroups should be moduralized just like vanilla nodes, complex nodegroups are made out of simple ones, decreasing duplicated work through reusability.
Nodegroups are separated into categories that define what is their expected purpose/interface.

Naming

Mapping.Triplanar

$category[.$namespace].$name

User Facing =/= Dev Facing

User Facing: Nodegroups of this kind should work out of the box. They should have a shader output, expose most of available settings underneath but still output all of it’s major components (eg. Color, Roughness).

Dev Facing: Nodegroups of this kind are to be mix and matched with other nodes and not expected to work by themselves (eg. Texture.Wood nodegroup has no default coordinate system whereas Material.Wood does).

In the end this is nothing revolutionary, but it allows me to keep the library consistent as I develop it.

oeykmiih · June 1, 2024, 2:21pm

2024-06-01

bump is now additive for all bump , including the pattern_tiles
tweaks to pattern_tiles and texture_wood

Aaaand playing around with those:

oeykmiih · June 1, 2024, 7:53pm

2024-05-22

oeykmiih · June 1, 2024, 7:54pm

2024-06-01

oeykmiih · June 6, 2024, 12:25am

2024-06-06

oeykmiih · June 8, 2024, 10:04am

2024-06-08

A completely different subject to test plaster/glass.

Credits:

plaster material based on a nodetree i came accross in the wild (cannot find it right now)

flowers from botaniq

furniture model from blenderkit

oeykmiih · June 22, 2024, 7:14am

2024-06-22

Raw Concrete!

I’ve been looking into Sanctus’ Library for an idea of the general approach regarding some materials.

Easing Functions, taken from https://easings.net/

Emskverd · June 23, 2024, 8:39pm

good looking materials here! Keep it up!

oeykmiih · July 6, 2024, 9:41am

Thanks, I’m just working in the shoulders of giants here. Most of the techniques were found in this very forum!

oeykmiih · July 6, 2024, 9:44am

Been quiet on this post but working hard!

Iterated a bit on my todo/task logging system, I feel I want to do a post on that, someone might find it useful, I sure do like to see other people’s ways of organization.

oeykmiih · July 6, 2024, 9:55am

2024-06-27

Reworked the Physical Starlight and Atmosphere to work without the addon (took a lot of rewiring and adding the math that was done on the python side).

Also got rid of the Sun Position addon, I had no need for the sun light and instead redid all the math in shader nodes! (Only the sun_position nodegroup is included, pretty sure I cannot share the modified PSA one)

2024-06-28_sun_position.blend (1.2 MB)

oeykmiih · July 6, 2024, 10:04am

2024-07-05

Wood Rework!

I was not happy on how I could influence the wood in the previous nodegroup.
The new apporach was slicing the 3D textures to get the “wood cut” that I wanted, also added a “Core” section to emulate the exansion of the grain when it gets to the center.

Will eventually improve this further but for now it works.

Some references:

oeykmiih · July 6, 2024, 11:14am

2024-07-06

Ceramic Tiles!

Makes use of Bump.Tiles (previously Pattern.Tiles). Note to self, share that one was aswell.

Joel_RVC · July 8, 2024, 6:58am

Awesome. What would this look like with diffuse roughness (oren-nayar) enabled?

oeykmiih · July 12, 2024, 7:29am

Just searched about it, is that with 4.3? I don’t understand it entirely, but here the are (?)

Edit: added screenshots

oeykmiih · July 16, 2024, 11:23pm

2024-07-16

Bricks! Reworked quite a bit of the Bump.Tiles nodegroup:

Split into smaller nodegroups that can be chained multiple times

Added tile split with masking (used to produce the flemish bond). Quite a bit of work figuring out how to make the tile index work again. Still got to do vertical split, but that’s for another day.