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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9
votes
2answers
19k views

How to add a specularity map in cycles?

I've seen some examples like on BlenderGuru.com and some other youtube tutorials. But, what would be considered the proper way to add a specularity map in cycles?
19
votes
1answer
78k views

How to add a normal map texture and a diffuse texture on a model in cycles?

When I add a normal map texture in cycles I do this - How to combine the normal map texture with a diffuse|color texture? I don't have much knowledge about the nodes in cycles and I have no idea ...
0
votes
1answer
943 views

What is the difference between using an attribute node and texture Coordinate for a UV map?

What is the difference between using the attribute mode vs the texture coordinate node?
15
votes
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.
3
votes
2answers
860 views

How to replicate this effect (Parts of material more reflective than others)

Long story short, I've modeled Toothless from How To Train Your Dragon in Blender, and I'm now trying to replicate the effect that the runes/scales it has. I've been using blender for +2 years now but ...
5
votes
0answers
449 views

Cycles Materials: Listing shader nodes in a consistent way [closed]

Is there a way to re-arange the listing of shader nodes? It seems like they are listed in a random and inconsistent way, so that finding the shader you need is not very efficient. Examples: Choosing ...
6
votes
1answer
539 views

Can I use previously rendered frames as texture in Cycles?

A good example would be a giant screen in a football stadium. The last rendered frame would be used as texture on the screen for the current frame. This texture would be emitting light (as it is a ...
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 ...
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.
1
vote
1answer
110 views

Is blender more superior with the node editor then without it?

What I mean is - Can you do things in the node editor that would not be possible if it is removed? Is the node editor only a visual representation of other approaches for the same thing?
1
vote
2answers
1k views

How to combine “toon-diffuse” shader and “toon glossy” shader?

What is the best way to combine these two shaders? When I use the "add shader", it doesn't just combine the shaders, but it masses up the colors and the lighting. What would be some of the best ways ...
2
votes
2answers
474 views

What kind of node is this?

What kind of node is this? Image from this blog post
2
votes
1answer
1k views

What do the coordinates in a RGB-Curve mean?

Is the curve a representation of a function which describes y = f(x) where x is the input as composite or R,G.B channel and y is the result where x and y are in the range 0..255? In case that is true,...
1
vote
2answers
253 views

Why is the color information lost when image data is multiplied by and ellipse mask?

Trying to get an Lomography Look I first tried to create a Vignette but the color information gets lost.
2
votes
2answers
1k views

How can an image be posterized in the compositor?

I tried to split an image RGB values and re-combined it with rounded values in order to reproduce the results described in this BA Thread. But instead of a posterized image all I get is an almost ...
1
vote
1answer
839 views

Node editor lagging / unresponsive and imprevisible [closed]

Moving and arranging nodes has been a pain from 2.68 when I started using blender. With official and other builds. I have inverted the mouse to use LMB for selection and translation which is ...
0
votes
1answer
598 views

Is Blender the only open source Non-destructive editor? [closed]

Blender's "Nodes" function seems to make it a non-destructive editor. The "Mix" node enables the user to composite using "blend modes". For me, the "Add" blend mode is the most important of these ...
7
votes
2answers
2k views

Can I add the output of the VSE as input to the node diagram?

I know how to add the output of node composition to the VSE (add 'Scene'), but can I do the oposite? I want to post-process my video sequence with a filter only available as a node (Stabilize) ...
13
votes
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 ...
5
votes
1answer
2k views

Object rotation in node

I have a field of ellipsoids with various rotations. I'd like to colour them by their rotation. Is it possible to get an object's rotation in a cycles material node?
8
votes
1answer
706 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 ...
4
votes
3answers
694 views

get node links from_socket index value

I need to obtain just the index value from node_tree.links[...].from_socket, I am able to see it like for example ...
40
votes
6answers
50k 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. ...
3
votes
1answer
320 views

copy linked materials nodes to local material

DISCLAIMER: I rewrite my post upon the latest success to not flood my own post with already solved parts so I left only the part that really is still not working... PROBLEM: I need to replace all ...
15
votes
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 ...
5
votes
1answer
676 views

Material not displaying on array objects

I have set up my material in the node editor and it showed up fine but when I duplicated it with a array modifier the second object created with the array has no material attached to it. Also applying ...
4
votes
3answers
2k views

Is there a way of keyframing RGB curves?

In the node editor the RGB Curves node only lets me keyframe the factor. The control points have boxes for x and y coordinates, but it doesn't allow me to keyframe these boxes. Is there a way around ...
6
votes
1answer
4k views

How can you get a plane with a emission node to be brighter in the center?

How can I make a plane emit more light from the center using an emission node? On this image here made with Cinima 4d The orange and blue planes are emitting more light from the center: How can I ...
9
votes
2answers
414 views

Compositing Layers Have Halos

I'm having a heck of a time compositing numerous layers using the Alpha Over nodes in the compositor. I have done this many times before without a problem. All the objects on each layer are ending ...
3
votes
1answer
800 views

Why is my Material Nodes -based blender internal texture not translucent like the other one? How do I work around it?

I'm trying to animate a neon sign that blinks, but I'm having trouble with my materials. Here's the .blend file I am using the Blender Internal renderer. In order to have a neon sign that blinks I ...
3
votes
0answers
1k views

data formatting of Z-buffer [closed]

I am currently trying to generate synthetic depth images using blender. I understand that current the z buffer can be output using the composition nodes into OpenEXR and I have successfully done that. ...
4
votes
1answer
1k views

Node for local mesh curvature

Is there a node (or group of nodes) that outputs a measure of local mesh curvature? Using the input Fresnel node almost gives me the effect I'm looking for, but the node setup I'm looking for would ...
3
votes
1answer
1k views

Adding background to the landscape and mixing with mist

In order to create clouds in the background of landscape I followed instructions of the lesson and used the Image node to add image needed in the result. Then I mixed that image with color (by using ...
8
votes
1answer
276 views

Shadow from camera vs shadow from reflection

Is it possible to distinguish between shadows viewed directly from the camera, and shadows seen in the reflection of an object? For example, the shadows circled here: From the cameras's perspective, ...
24
votes
1answer
13k 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?
2
votes
2answers
308 views

How do you affect the translate node by the location of object?

I have this group input that generates a "lens flare": I would like to know if it is possible to 'parent' the location of the flare to the sphere at the bottom of the image. I do not want to use any ...
6
votes
1answer
4k views

How can I randomize a value for a node? [duplicate]

How can I randomize a numerical value for a node? Is there any one node, or combination of nodes that can achieve this effect?
2
votes
1answer
158 views

Python node that replaces itself in the editor with a group?

This might be a bit of a weird one, but I'm looking to write a Python node that will, upon a user's input of a folder path, replace itself with a node group that contains itself and other nodes based ...
4
votes
2answers
591 views

Pointers to node groups?

I am making "2x4"s!!! For consistency across the variations i have to use the same texture, otherwise they would look like they were made with different types of wood... but if you line them up you ...
2
votes
1answer
461 views

Copying objects in 3D view along with nodes and other stuffs

while I am trying to copy a object (with nodes) (e.g. cube) to another blend file. The object that I am trying to copy was modified with nodes and I can't copy the object with nodes or manually copy ...
3
votes
2answers
3k views

I don't seem to have blur node, using v2.69 [duplicate]

Following along in tutorials I see the blur filter being used. I am using Blender 2.69 and I can't locate it visually or even with a search. Actually, there is no "Filters" category at all. Do I have ...
11
votes
2answers
14k 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 ...
17
votes
4answers
8k views

Is there a way to make comments in the node editor?

I'd like to have a node like the Frame node but one that can have lots of text, not just a header. I've looked and it looks like there isn't any such capability so far, so I was wondering how easy it ...
26
votes
4answers
16k views

What is Ambient Occlusion?

What is Ambient Occlusion and what are some of it's uses? I see it is used in creating what might be called "shadow catchers" in the following node tree setup: