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Questions tagged [node-editor]

Questions relating to Blenders node editor. The node editor is used for non-destructive texture and material editing; for geometry node editing and for post-processing/compositing.

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19 votes
2 answers
13k views

Procedural brush stroke texture?

I want to make some procedural textures that look like a bunch of brush strokes, pencil scribbles, or the like. The core component being that they are a collection of strokes that go mostly in the ...
Ascalon's user avatar
  • 6,629
18 votes
5 answers
43k views

How to properly hook up various maps types in Cycles?

I created some texture maps in MindTex to use in Blender, but I can't figure out how to properly hook them up. The maps I have: ...
David Prentice's user avatar
18 votes
1 answer
24k views

How to split node connections?

In a tutorial a guy split a line like this: I have try left click and right click but nothing works.
user4935's user avatar
  • 217
18 votes
2 answers
21k views

How to make a realistic snow material in Cycles?

I have looked at many snow shaders, but haven't yet come up with one that looks good. I have many examples of not so good looking snow that I have tried to make. I have looked at these materials: ...
David's user avatar
  • 49.4k
17 votes
4 answers
19k views

How to create a procedural brick texture for a simple building without object size changing the texture size?

I want to create some procedural textures that I can quickly reuse to texture objects. For this example I want four sided cubes (ignore top and bottom) that are wrapped in bricks. But, I want the ...
NoobieStClair's user avatar
17 votes
3 answers
8k views

Debugging material math nodes in cycles

I've got a pretty complicated node tree which isn't behaving exactly as I'd like. I'm pretty sure I've made some mistakes in my math nodes.. I'm interested in the output values of the math nodes. The ...
ajwood's user avatar
  • 10.1k
17 votes
4 answers
12k views

Can I refer to another object's properties from a Cycles node shader? Drivers? If so, how?

I am trying to develop several shaders that need to take into account the position or orientation of another object in my scene. Seems like a generally useful thing to be able to do. Here's an ...
Chuck's user avatar
  • 1,090
17 votes
1 answer
14k views

Rename Node Sockets

Is there a way to rename the sockets on a group node? This would be useful. Googling produces some unsettling results as it seems it is a feature being developed by a third party and maybe as an addon?...
Ryan Lutz's user avatar
  • 347
17 votes
2 answers
21k views

How do I use nodes to combine two images when both have transparent areas?

Is there a way to use nodes to combine two images if both the images have transparency (i.e. alpha channels)?
Thom Blair III's user avatar
17 votes
1 answer
7k views

Controlling the "strength" of cycles' Bump node

What is the correct way to control the strength of the bump node? What does the Distance Input on the bump node in cycles do? The manual does not make it clear. Distance Input Multiplier for ...
David's user avatar
  • 49.4k
17 votes
3 answers
19k views

Using Texture Nodes for the Displace Modifier

I'm trying to make some procedural textures that will give me a result like this: - this one is said to have been a voronoi + a clouds texture and I figured the best way to combine those is to use ...
gogonimago's user avatar
16 votes
6 answers
3k views

How can I better structure my node tree and make it easier for others to understand?

I built a Node with a Geometry Nodes node tree, but now I only see knots instead of nodes, which drives me nuts, and don't know how to make it look great again. As you can see, I have what I think is ...
quellenform's user avatar
  • 36.7k
16 votes
2 answers
1k views

What's the most reliable way of converting a material into reusable code blocks?

I'd like to convert certain materials into executable python code without having to re-code them from scratch each time. While doing some initial experimentation on the principled shader, I realized ...
brockmann's user avatar
  • 12.6k
16 votes
1 answer
6k views

How can I make a procedural polished granite material?

I have made a polished granite material with a node setup. Using this photograph as reference, how can I improve this further?
Naresh Vijh's user avatar
16 votes
1 answer
5k views

Using the Camera Data Node

In the blender manual the options for camera data node are explained like this: View Vector A Camera space vector from the camera to the shading point. View Z Depth How far away each ...
user avatar
16 votes
3 answers
10k views

How can I make a "Movie Clip" node start at a certain frame of the scene?

When I use "Movie Clip" node in Blender 2.7, it always starts at Scene Frame 1. How can I change it in order to make it start at Frame 6, for instance? The movie clip I am using is a Movie FX for ...
Javier J. Salmeron Garcia's user avatar
16 votes
1 answer
12k views

What is a shadow ray?

I have read the Blender documentation wikis on both the light path node and on light paths. But neither of them seems to clearly explain what a shadow ray is. For instance, the light paths wiki says:...
PGmath's user avatar
  • 25.2k
16 votes
2 answers
1k views

Big Screenshot of Node-Tree

Would it be possible to screen capture or output node-tree network like really big, bigger than actual monitor screen. If possible, a way to capture the node-tree boundary. So far, I only screen shot ...
Blender Sushi Guy's user avatar
15 votes
3 answers
9k views

Correct vector input to map texture light in Cycles

What is the correct vector input for a texture connected to a Cycles lamp so that I can make a projector-like textured light? I am trying to make an projector-like effect with a textured light in ...
Duarte Farrajota Ramos's user avatar
15 votes
2 answers
11k views

is it possible to distort a voronoi texture like the wave textures distortion slider?

I want to distort a voronoi texture in a similar way to how the wave texture's distortion feature does, but there isn't any kind of built in slider for this like there is with the wave texture. Is ...
ideorium's user avatar
  • 987
15 votes
1 answer
5k views

Cryptomatte - What does Crypto00, Crypto01, Crypto02 mean?

Why does the Render Layer node use several outputs, like for object pass, such as - CryptoObject00 CryptoObject02 CryptoObject04 While Cryptomatte node uses several inputs like the following - ...
vklidu's user avatar
  • 36.8k
15 votes
1 answer
3k views

How can I emulate old photo cracks and creases procedurally?

This is the reference photo I've been using, and after a few attempts at it myself I wasn't able to get anything I was happy with. Essentially I want to be able to add an image into the Shader node ...
BiggityBoys's user avatar
15 votes
1 answer
10k views

Using an RGB map to assign various shaders in a material

I am importing a RGB image into Blender and I would like to replace the colors of the image by materials (Glossy, Glass, or other complex Node setups). For example I would replace the green with an ...
MicroMachine's user avatar
  • 4,703
15 votes
1 answer
17k views

What is the fastest and easiest way to add a vignette in the compositer for Cycles?

Poking around to find an easy vignette effect, I constantly run into seemingly unnecessary node setups. Six or seven nodes to add a vignette? An apparently really simple effect, this seems a bit much. ...
meed96's user avatar
  • 1,979
15 votes
1 answer
6k views

Reset nodes to their default values

After playing with nodes it is sometimes easier to start from scratch... Is there a shortcut to return the values of a node to their default values? EDIT Right clicking and choosing Reset Values ...
user avatar
15 votes
2 answers
15k views

How do you import a Compositing Node Set-up?

I have a Compositing node set-up for a lomography effect that I want to export or append to other blend files. Is there a way to do this? I tried grouping the nodes, but the group wasn't appearing ...
kopi_bon's user avatar
  • 1,077
15 votes
1 answer
2k views

Magic Eye Render

Today's newspaper had a Magic Eye or Autostereogram image in the kids section ... started me wondering could tools available to blender, be used to render a simple scene (Suzanne of course, repeating ...
batFINGER's user avatar
  • 84.5k
15 votes
1 answer
3k views

Relation between Fresnel IOR and Layerweight blend?

I know that the Fresnel and Layer Weight nodes do much the same thing, but with one accepting a proper Index of Refraction, and the other a value between 0 and 1. I have always used the Fresnel node ...
Ascalon's user avatar
  • 6,629
15 votes
2 answers
3k views

PyNodes, the bare basics

I know it's a very new thing (post 2.4 era anyways) but there seems to be very little documentation and examples for PyNodes in general, and the little there is doesn't seem to work in latest SVN (...
Greg Zaal's user avatar
  • 10.9k
14 votes
3 answers
4k views

How do I achieve this "hexagonal armor" animation effect in Blender?

I know this might be very specific, but I thought that maybe an expert here could help me out a bit here. How, or what is the general workflow to replicate this "hexagonal armor" effect on ...
kiblykat's user avatar
  • 495
14 votes
2 answers
7k views

How to make a 'rocky' material with procedural bump?

If I have a modeled rock and I want to somehow to add details to it like the ones from an Asteroid (like, little holes) which kind of Node setup should I need? My actual node setup (it's on cycles) ...
beavoru's user avatar
  • 5,387
14 votes
2 answers
5k views

Create procedural spiral pattern

I'm trying to make a galaxy in blender. If I use an image of a galaxy to get the spiral shape it becomes a 2d image projected into the 3d volume. To avoid this I wanted to use a procedural method, but ...
Sudoadmin's user avatar
  • 163
14 votes
4 answers
9k views

How to remove one of the group inputs

I'm using Blender 2.74 and trying to follow an online video tutorial on creating "sun" (presenter is using version 2.63). The problem I'm facing is that the presenter just selected a few nodes in the ...
dotNET's user avatar
  • 949
14 votes
2 answers
8k views

How to connect nodes to node group inputs and outputs in python?

How can I connect nodes in a node group to the input or output sockets? This connection here: I can't figure out how to access the group node_tree, and the Group ...
gandalf3's user avatar
  • 158k
14 votes
1 answer
7k views

How to make independently editable copies of the same node group?

I'm working with a node group (⎈ CtrlG) and I would like to make an independently editable copy of it. When I'm making a duplicate (⇧ ShiftD), there is a second node group created. ...
jubi's user avatar
  • 2,826
14 votes
2 answers
10k views

How to use multiple HDRIs

My question is, how would I make the visible HDRI/Enviroment Map be image 1 and then have reflections as Image 2? If someone can post a node setup, or a .py file that would be great <3 I was ...
AdamSokol's user avatar
  • 143
14 votes
1 answer
3k views

Using Nodes for Laser Line

I am currently trying to recreate the laser line described in Making a Laser in Cycles - Straight Beam of Light? I have selected the Cycles Renderer, enabled nodes on my light (spot and point tested)...
Tobyndax's user avatar
  • 153
14 votes
2 answers
4k views

Cycles Gradient Texture node: Why "Linear" is not linear on a "default" plane?

I want to render a plane with a linear gradient texture that can be rotated as needed. I've set up a basic working node network as shown: I can rotate the gradient using the Mapping Node - > Texture ...
Ash's user avatar
  • 557
14 votes
1 answer
11k views

Cycles texture mapping, generated coordinates with world orientation?

Basically I want to map a texture in cycles with the generated coordinates, but have it ignore the orientation of the object. The effect I want to achieve is a material that has a gradient, spread ...
Rhys's user avatar
  • 815
14 votes
1 answer
12k views

What does the radius vector do on an SSS shader?

What exactly does the radius vector value on a subsurface scattering (SSS) shader do? In his SSS tutorial (making realistic bread), Andrew Price says that the XYZ values translate to the RGB values ...
PGmath's user avatar
  • 25.2k
14 votes
1 answer
2k views

What is the range of values produced by Cycles texture nodes?

When I create a Cycles shader, I often take the 'Fac' output from a Texture node and feed it to the 'Fac' input on a Mix Shader. I'd like to know the exact range of values that this output produces so ...
Justin's user avatar
  • 2,012
14 votes
1 answer
1k views

Creating a painterly effect using Geo Nodes

In short, I want to give a painterly look to my objects. A pretty big issue I've been hit with so far is how to assign the instanced objects to essentially show the material of the object they're on ...
Stephen Stark's user avatar
14 votes
1 answer
804 views

What are some use cases for the singlar ray output?

Using the singular ray output, it's possible to detect whether or not the object is being viewed through a perfectly sharp reflection or refraction: Besides changing colors of reflections, what are ...
gandalf3's user avatar
  • 158k
13 votes
5 answers
20k views

How to get random color variation on a single mesh?

I am trying to get color variation and to bake it in a single mesh but the Object Info Random only works if i separate the meshes. Is there an alternative way to get the same result with the meshes ...
Danyl Bekhoucha's user avatar
13 votes
3 answers
21k views

How do you make an image emission without washing out the image?

I am trying to make a computer monitor. This means I have to have an image texture for the screen. My image texture is currently connected to an Emission BSDF shader. Unfortunately, when the emission ...
leigero's user avatar
  • 1,209
13 votes
2 answers
37k views

How to Make a image repeat in cycles

I want to make a wall with a image repeating across it like wallpaper. I tried it in the node editor but the image is taking up the entire plane. I just want it to be small and for the image to ...
BinaryGreen's user avatar
13 votes
3 answers
4k views

How would I change a Cycles material's color using the scale of the object instance it's applied to?

Basically I have a field of spheres that are a bunch of different sizes that use the same material and I want them to be a different color based on their size. I'm using a volumetric shader, so each ...
stapleshotz's user avatar
13 votes
1 answer
69k views

No render output node in scene

I am new to using blender and have been watching youtube videos on how to use it. I copied the steps of how to create cracks in a surface. I can see what it looks like if it gets rendered but then ...
shaunify's user avatar
  • 133
13 votes
1 answer
5k views

Is it possible to find the nodes connected to a node in python?

Is it possible to find nodes connected to a node? For example, could you trace your way back through a node tree from the material output node by finding the node connected to the material output ...
gandalf3's user avatar
  • 158k
13 votes
2 answers
2k views

How to generate Reaction Diffusion animation?

How to create Reaction Diffusion as animated texture (image sequence) in Blender?
vklidu's user avatar
  • 36.8k

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