Questions tagged [nodes]

Nodes are used in the Node Editor for compositing, post-processing, creating materials and textures. Use this tag for anything node related.

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5answers
38k 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: ...
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2answers
18k 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: ...
16
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1answer
3k 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 ...
16
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1answer
3k views

Distance from the surface as an input node for use with volumetric materials

I would like to create a material that has a volumetric component whose local Density depends on the depth of each volume point below the surface. Can the information "how deep below the surface is ...
16
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2answers
329 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 ...
16
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1answer
5k 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 ...
16
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2answers
8k 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 ...
15
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1answer
6k views

How is the vector transform node used?

The Vector Transform node has been a bit of a mystery to me. I would presume it would be useful more for procedural textures, but I have no idea how it should be used, or where it might be most ...
15
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1answer
12k 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.
15
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1answer
6k 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 ...
15
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1answer
5k 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?
15
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4answers
8k 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 ...
15
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1answer
3k 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 ...
15
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3answers
8k 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 ...
15
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2answers
14k 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)?
15
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2answers
2k 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 (...
15
votes
1answer
2k 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 ...
15
votes
1answer
673 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 ...
15
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3answers
16k 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 ...
14
votes
3answers
7k 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 ...
14
votes
2answers
6k 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) ...
14
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4answers
15k 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 ...
14
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2answers
7k 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 ...
14
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2answers
6k 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 ...
14
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1answer
2k 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)...
14
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1answer
6k views

How to remove a node from a frame?

Frames are great for making node trees more understandable. However one annoying feature about them is that they trap any nodes that get accidentally dropped over them. So how do I get a node out of a ...
14
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1answer
7k 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 ...
14
votes
1answer
550 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 ...
13
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2answers
3k 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 ...
13
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3answers
3k 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 ...
13
votes
3answers
6k views

How to align wave texture perfectly?

Is it possible to align procedural wave texture in Cycles perfectly - say - vertically? Because when assigned to an object (in node editor), it's rotated ~45° or so... I tried playing with mapping, ...
13
votes
1answer
2k views

Cryptomatte - What Crypto00, Crypto01, Crypto02 means?

Why Render Layer node use several outputs, like for object pass CryptoObject00 CryptoObject02 CryptoObject04 and Cryptomatte node several inputs Crypto00 Crypto01 Crypto02 What I tried, ...
13
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3answers
5k 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 ...
13
votes
2answers
2k views

Blender halftone pattern filter

I am trying to set up a material that acts as a filter - taking an image plane and giving it a halftone look. The dot pattern is made wih a radial gradient texture mapped across the camera space. A ...
13
votes
1answer
17k views

Getting “experimental” true displacement to work

I have been trying to achieve a true mesh displacement on meshes for quite some time, without ever getting it to work. If I understand it correctly, this experimental feature would allow me to easily ...
13
votes
1answer
7k 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:...
13
votes
2answers
3k 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 ...
13
votes
3answers
1k views

Methods of applying bumpiness to materials

I've been following some tutorials, and I've noticed several different ways to apply overall bumpiness to an object. So, first of all, what is the difference between plugging a procedural texture ...
13
votes
4answers
2k views

Cycles node editor - Map gray scale value map to extremes

I have a value map that is black and white, but it covers a very small range of that spectrum, having the brightest value at 90% grey, and the darkest somewhere around 80% grey. What I need to do is ...
13
votes
1answer
7k 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 ...
13
votes
2answers
3k views

What does the mapping type do on a mapping node?

What do the four buttons (texture, point, vector, and normal) at the top of the mapping node do? It by default uses point and I have never changed it. But in the answer to this question David ...
13
votes
1answer
38k views

I can't find where to change the strength of the sun in version 2.70a

I have viewed the tutorials of lighting and shading, but the version used in the tutorials must be older than that I use.
12
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2answers
31k 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 ...
12
votes
1answer
6k views

Blender Cycles True Displacement

I want to use the displacement node in cycles node editor, i was wondering whether subdividing an object or using sub surf modifier makes any difference, if so which one I should go for in order to ...
12
votes
1answer
843 views

What is the parameter A in the RGB color

I remark that there is a parameter A in the color RGB parameter as mentioned in the image below. What is this parameter and what is its effects on RGB color?.
12
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1answer
784 views

How to show different images based on Object ID

I got an image sequence for the poker faces (totally 54 images). And I want to find an effective way to place them on 54 objects. According to my knowledge, I just tried to use tricks like the Oject ...
12
votes
1answer
20k views

How can I setup a Material in Cycles for Z-Transparency?

After converting to nodes in order to render using Cycles I've no idea where to enable the z-transparency. I guess the image textures alpha channel needs to be pluged somewhere but I've no idea which ...
12
votes
1answer
8k 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 ...

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