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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.

656 questions with no upvoted or accepted answers
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votes
4answers
977 views

How do I color the shading of a material?

Some art styles increase the saturation in their shading, I'm trying to achieve this effect as seen in cell #2 of my example image. Right now it looks like cell #3, which lacks this and looks dull in ...
6
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0answers
132 views

Copy scene node tree to other scenes

I have a Blender file wih many scenes and I want to copy the node tree of one of them to the other scenes. From Blender interface it is a very simple task, in python I have tried using bpy.ops.node....
5
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0answers
254 views

Update function for NodeSocket?

How do I set a callback for socket input change (value or link change) when having a custom node? I have a socket defined like: ...
5
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1answer
2k views

How do I make an object look wet?

So I started a project and it mainly revolves around a manhole and a street, and it's raining, but I can't get the manhole to look wet. One thing I tried was to mix 2 noise textures (one with a low ...
4
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0answers
228 views

Eevee Linear / Cubic Texture Interpolation Complex Node Issue / Bug

A friend has been working on a project, and they have run into issues with using Linear Interpolation & Cubic Interpolation with their complex node tree. This node tree will be working with low ...
4
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0answers
134 views

Is is possible to get boids data to animation nodes signalling when they are 'attacking'?

I am creating a space dogfighting scene and I have been able to hook up the particle boids to animation node instances, including positions and even the rotations by normalizing the velocity and ...
4
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0answers
97 views

Compositor File Output Node overwrite?

In the Output tab of Render settings, you can set the output options for rendered animation. One of the options is to have new renders overwrite the previous ones or not. The File Output node in the ...
4
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0answers
2k views

nVidia skin shader with the Principled BSDF

I've been using a skin shader primarily based on the Brecht skin shader, which is itself based on the Sum-of-Gaussians approach as seen in 14.4.7 from GPU Gems by nVidia. Its Cycles adaptation, which ...
4
votes
0answers
621 views

nodes in blender game engine

I have an issue while tring to set up a material for blender game engine. You can see the setup on the image, and the BGE doesn't render my purple object that's on the View panel.
4
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0answers
634 views

How can I use a node-based texture for smoke flow in Cycles?

Preface: I'm thinking that this might be a bug, because the behavior's pretty weird. I'm posting it here in case it is the intended behavior and there's some trick I should use. I can successfully ...
3
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0answers
60 views

Pointiness to Vertex Colors Script for use in EEVEE

I am attempting to create some Procedural Weathering Effects on a high-poly model using a similar Pointiness method to that discussed in my previous question and answer here. Whilst Cycles provides ...
3
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0answers
53 views

How to properly rotating a material using node which has a normal map?

Rotating normal map via mapping node seems will flip normal map, resulting a weird looking material. But directly rotating uv map in uv editor doesn't cause any issue. So how to properly rotating a ...
3
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0answers
23 views

Using texture data from texture properties as node data in Cycles

either I'm clearly missing something or I misunderstood the concept, but I hit a wall with something that should be pretty easy (provided it is already implemented in Blender). I'm basically creating ...
3
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0answers
43 views

texture mapping without texture being mirrored on other side of object

I have a cylinder I want to map a texture to. To specify the location of the texture I use an empty. In the material node editor I then use the object function of the texture coordinate node and ...
3
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0answers
74 views

Is there a way to get a node's dimensions without displaying it in the Node Editor?

The aim of the question is to calculate a node tree layout for a generated node tree. Nodes have height, width and ...
3
votes
1answer
61 views

How can I sharpen the light fall off for a rotating earth animation with 2 materials?

Intermediate level question. I have been following Andrew Price's excellent tutorial on "How to make Earth". I have managed to "create" earth, and render as a static image. I have returned to this ...
3
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0answers
122 views

Irregular shapes texture

Below is the type of texture I wish to generate using Blender's node system. Thus far, I have tried using a mixture of Blender's base textures, noise, magic, voronoi etc. I have attempted to combine ...
3
votes
0answers
23 views

Gradient texture loses effects in linked smoke simulation group

I have created a smoke simulation with the following node-setup as the material. The three nodes on the far left allow the lump in the center of the smoke simulation to lose their density. The ...
3
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0answers
43 views

Node Group separator for parameters

Is there any way to add separators to better organize node group parameters?
3
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0answers
72 views

How do I curve procedurally generated textures (Clouds)?

I'm quite new to blender and am still getting the hang of things. Having followed BlenderMaster's tutorial on creating clouds, I've managed to create something like this: I already know how to move ...
3
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0answers
190 views

Rendering to Viewer Node in headless mode

I'm running Blender 2.79: /path/to/blender -b empty.blend -P script.py With script.py: ...
3
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0answers
223 views

Nodegroup: Missing data block

A Cycles node group in a file of mine seems to have lost its data block somehow. The group still shows its inputs and outputs properly, but the name of it has changed to Missing Data-Block, and no ...
3
votes
0answers
67 views

How do I find which materials are using a particular node group

I have a blend file that I am using as a materials library. I have discovered that there are node groups that were not named, so I have a collection of NodeGroup.xxx groups. I would like to find the ...
3
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0answers
302 views

Creating nodes with dynamic number of input sockets?

Is it possible in any way to create one's own node type in one of the node editors (let's just say the Compositor for example) that can have a dynamic number of inputs? Not a group node, just a ...
3
votes
1answer
135 views

Help figure out where this phantom rust is coming from

I have an object with two non intersecting UV Maps. One UV Map (round.red.light.decal) is to place a red light decal (round.red.light.png). The other UV Map (rust.map) was used to draw an image mask ...
3
votes
0answers
107 views

How to control materials falloff type from perpendicular/parallel to fresnel using nodes?

I used to create falloff maps in 3dsmax quickly and easy. Now I would like to be able to do the same thing in blender. Currently I am using Toggle diffuse ramp operation in blender, but it only ...
3
votes
0answers
343 views

black displacement artifacts using micro-displacement and adaptive subdivision

I am currently using micro-displacement along side with adaptive subdivision. However I have stumble upon a weird artifact. As you can see there are some black pixelated artifacts along side the ...
3
votes
0answers
161 views

Scripting an “open image” button input for image/env. textures?

Is there a way to script out a normal image/environment texture node with the exception of an "open image" button input that can be plugged into a node group and have that button actually be displayed ...
3
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0answers
639 views

How to create topographical contour lines ?

I am working on engraved cave walls, got from 3D scan. I would like to create topographical contour lines (maybe not "lines" but "ranges" ...) in order to see better the engravings. I have already ...
3
votes
1answer
950 views

How to update compositing nodes via script?

I create some nodes in compositing via python script: ...
3
votes
0answers
65 views

Defcous Node algorithm

I am working with Blender to generate defocus images using the Defocus filter it provides in the Node Editor. The official doc says that the blurring is done as a "post-process" using the Z values in ...
3
votes
0answers
587 views

Using data with python nodes

I have created a number of python nodes inside my own tree. I have one node that takes one input and has a button called "Simulate". This is an operator that is held in another file. Currently all it ...
3
votes
0answers
113 views

How can I use a mask in World Textures

I have a cycles world setup with 2 textures rendering out as equilateral (for 360 deg video). I would like to use either a mask shape or an object from the filed of view as a mask between the 2 ...
3
votes
0answers
2k views

How to create an all-around night sky in Cycles?

So I created a night sky following this video https://youtu.be/9vbq6HOgA2w It was going pretty well until I noticed that only half of the world actually looks decent. The bottom half/ middle is this ...
3
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0answers
185 views

The problem of distortion on the composite

Hi all, I have a problem. I will render an object, is simply a box, get the rendering, compositing, then distort it. As a result of rendering over a live video the cube is smaller and renders with a ...
3
votes
0answers
605 views

Copy node tree from one material to another in cycles using python

I have two cycles materials (say source and target). I want to copy the Shader Nodetree from the source material to the target material after clearing any currently present node tree(s) in the target ...
3
votes
0answers
72 views

How to create an image whose alpha value changes according to a curve through time in node-editor?

I connected an image-node with a composite-node and connected a value-node into the alpha of the composite-node. I changed the values and the image changed its transparency. Then, I connected the ...
3
votes
0answers
105 views

Is there a way to get the vector to the closest UV seam?

I am looking for a way to get the distance to the closest UV map seam in UV-space as a vector in the node editor. Like this: The blue dot is the current point of reference, i.e. the point where the ...
3
votes
0answers
348 views

Use value of node output for driver

Situation: I have an Object that rotates (keyframed). I use Nodes and Drivers to set the objects color to blue within the first quarter of one whole rotation (90°) and red for the rest (270°). That is ...
3
votes
0answers
4k views

How to make procedural wood material with knots?

Recently I saw new cycles wood shader from CG Cookie, that looks very impressive and I was wondering if it is possible somehow to mix few wave textures to achieve natural looking knots on the wood. ...
3
votes
0answers
464 views

OSL: Giving the texture method a color instead of string

Is there a way to give the OSL method texture(string, float, float, ...) a color input instead of the string which reads an image file? Or is there any type of ...
2
votes
0answers
36 views

photo realistic sss skin shader… i need a great node setup

So i was looking for a great node setup, heres my results so far and my node setup. I was wondering what i was doing wrong because it doesn't look good, also i know light setup is important but for ...
2
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0answers
31 views

Image Texturing - Using cycle's nodes to scale image texture and randomly rotate them

Is there a way to randomly rotate an image texture randomly and keep its mapping scalable? Im sure this has already been asked but can't seem to find it. If someone can redirect me to the appropriate ...
2
votes
1answer
176 views

How to make node group of an existing material into a new group? (in python)

This is what I would like: I'm looking for an alternative to bpy.ops.node.group_make() Because it seems like a bad approach. I simply want to group a new group ...
2
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0answers
65 views

How to create more realistic shadows?

Obligatory disclaimer: This is my first post on blender.stackexchange so forgive me if my post isn't on par with what's usually asked here. Explanation: I'm running v.2.80 of Blender currently and ...
2
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0answers
66 views

Brushed Nickel in Blender

I am trying and failing to create brushed nickel in blender. The texture of the object is smooth and the brushed appearance doesn't add any bump to the metal. See the attached pictures for the look I ...
2
votes
1answer
24 views

Texture shows up with bg

I have a metal pyramid which I'm trying to make slightly covered with sand dust. But I don't need it everywhere, so I decided to use a mask. I've never used masks before. I'm using a texture for this ...
2
votes
0answers
61 views

Suspended glitter in clear material

I've been hunting for a bit with no real results for a material that looks like glitter cast in resin or clear nail polish with glitter floating inside of it. There's plenty of results for solid ...
2
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0answers
135 views

Python Mix Shader Diffuse BSDF Glossy BSDF Nodes

I am trying to create a plane object in python that uses a mix shader with the first shader being a Diffuse BSDF Shader, color black, roughness 0.200 and the second shader being a Glossy BSDF shader, ...
2
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0answers
102 views

Welded Iron bronze/silver material?

Ive made an exhaust manifold with welds in cycles, Im trying to acheieve a realistic material where the welds are a rusted bronze like in the image attached. How would I go about getting this result?