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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17
votes
1answer
3k views

What is the meaning of the color of the node sockets in the node editor?

I have been searching on the web and I can't find this. What is the meaning of the color of the node sockets in the node editor?
28
votes
3answers
23k views

How can I make a material only apply to a side of a plane?

How could a one-sided material be achieved with the Cycles renderer? I would like to create a plane that is completely transparent from one side, and a mirror from the other side. It would be cool ...
12
votes
3answers
31k views

How to properly hook up various maps types together in cycles?

Okay so I have been using a software called MindTex 2 to create maps for use with Blender Cycles (or internal). The maps I have here are: Please note in the examples, and blend file I don't actually ...
10
votes
1answer
18k 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 ...
7
votes
2answers
4k views

How do I get the Glare node to output transparent instead of Black background

This is what I have so far: http://imgur.com/a/ZnFOt The rendered image has a transparent background, but the glare filter creates an output with a black background, so after merging the two ...
2
votes
2answers
1k views

My objects are semi-transparent, and not one behind the other in the compositor

I have multiple scenes each with different objects. I want to combine all these scenes in the compositor but when they render, all the objects from each scene overlap each other and are all ...
34
votes
6answers
30k views

How to blur a texture node in cycles material?

For a Cycles material I need to blur a texture. If the texture where a Texture Image node, I can blur the image before adding it but in my case I need to blur a Voronoi Texture and so I can't do it. ...
19
votes
3answers
11k views

How can I convert a node made material into an image texture?

I have a sphere having a planet material MADE WITH NODES, and I want to convert this material into an image texture; because this material is made with nodes and only works in Blender, but I want to ...
21
votes
1answer
32k views

How can I make a more realistic glass shader? [duplicate]

Here's a sample scene: A room with a window, a point light to project light into the room, an HDR environment outside the room and a nice Image by Rembrandt that should be somewhat reflected on the ...
25
votes
1answer
4k views

Possible to control a Driver from a Group Node input slider?

Sometimes I create Material Groups to be used as appendable reusable assets. Unfortunately sometimes parameters I want to control using a Group Node's slider are not available for routing to a Group ...
22
votes
1answer
7k views

Node for setting render colour, regardless of lighting

I'm trying to make a material node setup to set final render colors, regardless of lighting conditions. Is such a setup possible?
22
votes
2answers
33k views

Shader nodes are missing?

I have blender 2.69 and I've been following a tutorial on how to make text. The only problem is when I go to add a glossy shader in the node editor it does not exist. Neither does the shader category....
6
votes
2answers
2k views

Why is the node editor showing different kinds of nodes?

I have been following this tutorial until I started adding nodes. The problem is that he has completely different nodes than I have. Even nodes that are created at start are different (I have Material ...
20
votes
2answers
8k views

Post-processing Lightsabers in Blender

I've been studying JamesVillanueva's lightsabers for a while now, and have tried to recreate the effects in Blender. The trouble I'm having is with the blade in the compositor. Keep in mind that I'm ...
9
votes
3answers
5k 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 ...
13
votes
1answer
15k 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 ...
7
votes
2answers
4k 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 ...
33
votes
2answers
33k views

Is there really a way to make a true toon shader material in Cycles?

Is there a way to make a true toon shader material in Cycles? Here's, in order of importance, what would be ideal to find in such a shader: Must use Cycles Must be an actual shader Must not rely on ...
48
votes
4answers
14k views

How do I create repeating patterns with cycles' procedural textures

Most people's question in this area is how to reduce repeating patterns, however I want to create them. I'm creating 2d rendered tiles for my game, and I want to create procedural materials for my ...
18
votes
2answers
10k views

How can I resize/move the “canvas” of an image in the compositor?

As you can see, if I try to translate an image in the compositor, it does not affect the actual bounds of the image, only the pixels themselves. The same thing happens when trying to scale an image: ...
8
votes
1answer
20k views

How can I make an object invisible when I render in Cycles?

Using the Cycles Render Engine How can I make an object invisible when I render?
8
votes
3answers
4k 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 ...
21
votes
6answers
6k views

Voronoi Cracks Fac?

I am familliar with Blenders Cycle's Voronoi Texture and have fiddled with it for a while. I am trying to get a result that is not like Intensity or Cells, but more like cracks. I tried the node setup ...
12
votes
1answer
5k 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 ...
11
votes
2answers
11k views

Can I make a custom node from a group and have that available in other projects?

I've found some neat combinations of nodes to create certain effects, so I'd like to make them a group and then have that node available on my list of available nodes, even when I reload the startup ...
14
votes
4answers
36k views

Accidentally hit “toggle full screen”, How do I exit?

I'm stuck in full screen in the node editor. Escape isn't working, and I have no menus and no idea how to leave except to quit Blender and reopen the program.
18
votes
2answers
25k views

Using a Normal map together with a Bump map

I've been stressing these days searching for a video on using a Normal map with a Bump map, but I haven't found something good. Some suggest connecting the Bump input into the Displacement output and ...
5
votes
3answers
14k views

How can I make a part of a texture glow?

I need to make a part of a texture glow slightly. Like Killer Crocs eyes (see image below) How do I do this? I added a black and white texture (white for the glow. But then this happened. There ...
4
votes
1answer
2k views

Particular nodes are missing from node editor

I am looking for the Mapping Node but it is not available under the Vector nodes menu or any other menu. I have Blender 2.77 which cooresponds with the manual version in the above link. I also cannot ...
29
votes
3answers
9k views

What is the difference between the displace socket and a bump map?

Aside from the fact that you can control the bump mapping per shader with a bump node, are there any differences between these materials? As far as I can tell, they are the same. Is the displacement ...
20
votes
1answer
5k views

How to render a mesh transparent with a color on its edges only, with nodes?

I would like to have my object transparent, with a color only on the edges, would someone know how to do this? I am starting with the nodes, if anyone can help with some guidelines I would really ...
11
votes
3answers
944 views

A way to get Rate of Change in translation or rotation into a shader node

I am doing a space scene with a space ship, and i'm trying to be physically realistic when it comes to how ships move in space. As such, I only want my thruster effects to fire when the Rate of ...
11
votes
3answers
10k views

Is there a way to save composite node presets?

Is there any way in Blender to save settings in your compositing node setup. For example say for my shadow catcher I have it setup for a hard shadow for sunlight, and then I also have a setting for ...
12
votes
3answers
6k 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 ...
5
votes
1answer
424 views

Make light paths only pass through non-emitted areas?

I'm trying to make it so that the plane is transparent except for the light from the aqua emission. Or in other words, how can I make it so that the plane's white areas are transparent and the plane's ...
20
votes
3answers
12k views

Way of seeing data as image anywhere in a Cycles nodes setup?

I made a complicated nodes setup for a material using Cycles. Is there an easy simple way to peek at the data passing through any node, to view it as an image? I desire something like an ...
14
votes
1answer
1k 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)...
24
votes
2answers
11k views

Difference between Add Shader and Mix Shader?

What's the difference between Add Shader and Mix Shader nodes with the Cycles rendering engine? I know that Mix Shader gives you more control over the material ratio, of course, but are there any ...
9
votes
1answer
4k views

How to handle creating a node group in a script?

I am attempting to make a python script that creates a nodegroup based on some scene properties, however the group_make operator needs to be in a node editor ...
3
votes
3answers
808 views

How do I put a stencil-like texture across a sectioned object?

I have a rough wood board crate I want to apply (UV map) a stencil on, but only on one side of the face AND I want it to disappear in between the boards --just like the attached example image (created ...
7
votes
1answer
19k views

How do I get transparency to work with the Principled BSDF shader?

How do I get the Cycles Principled BSDF shader to support a base color image such as a 32bit png with alpha or a tga with an alpha channel, and get the transparency to work. I don't see anywhere on ...
4
votes
1answer
1k views

Compositing video layers in 3D space

Here's what I need to do. I have a footage of a street. I want to add several people walking. Each person was shot using chroma. I understand how to remove the green using nodes. I understand how to ...
25
votes
1answer
2k views

How to store particle locations in a list?

my question is how to store the locations of a particle or any changing data in a list so as to use the locations for effects like trails. What I intend to create are particle trails, the following ...
25
votes
1answer
17k views

what can you call from the attribute node?

I know you can call density or flame for example from the attribute node. I was wondering what else you can write in the name slot. And maybe a bit of explanation of the attribute node. thanks in ...
8
votes
1answer
588 views

How does fac differ with manual control versus node control?

If I mix two shaders together, like the diffuse and glossy shaders, I understand that I can change the factor slider between 0 - 1. and that having 0.5 factor will show a 50% mix of blue diffuse and ...
15
votes
2answers
8k views

how are the math node operations in cycles calculated?

How does the math node do calculations with a specific operation: the usual operations of add,subtract, multiply and divide are quite understandable and are(empirically) very similar to some of the ...
9
votes
1answer
2k views

Using the False Color look in combination with the CDL Node to work on Wide Dynamic Range scenes

The color management for working in cycles can be enhanced to work with wide dynamic range scenes. The idea is to enable working with scenes containing values that exceed the conventional 0-1 range. ...
12
votes
3answers
12k views

Is it possible to get a random number in the node editor?

Is it possible to generate a random number for use in the node editor? I am aware of the Object Info node, but I want a random number which I have more control over. Ideally I could change it with ...
71
votes
1answer
28k views

What is a BSDF?

The term "BSDF" is common in Cycles shaders such as "Diffuse BSDF" and "Glass BSDF" but is not present in all names ("Emission" and "Mix Shader" are two such examples). What exactly is a BSDF?
12
votes
4answers
11k views

Add Nodes to Material with Python

I have edited a script that creates some nodes, but the only problem is, it always created a new material. I want it to either add the nodes on the existing material, or a pre-defined material. Here ...