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Questions tagged [compositing-nodes]

Questions related to compositing nodes available for compositing render layers into final renders in the compositor.

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45 votes
3 answers
30k views

How do I exit a node group?

I selected a bunch of nodes that I wasn't using and that weren't connected and thought that I would see if I could group them. Well, Blender let me group them alright, but now there is a green ...
Bryson Jack's user avatar
  • 3,787
30 votes
3 answers
31k views

Cycles: Shadeless "Shadow-catcher" Material for Rendering onto Footage

I am superimposing CGI over video footage, and have run into a problem in making materials for objects that act as 'shadow catchers'. Essentially I want a shader that is shadeless—like an emitter—but ...
Jollywatt's user avatar
  • 415
29 votes
1 answer
55k views

Planet texture generator

What cross-platform (or cross-browser) resources are available to help make texture maps for generating beautiful planetary images using Blender (Cycles)? Ideally, these would include: Terrain maps (...
Dave Jarvis's user avatar
28 votes
1 answer
7k views

What is the the ASC-CDL node?

The color balance node in the compositor can be switched to use the ASC CDL How is it used? How is this different from Lift/Gamma/Gain? How do the Offset, Power, Slope options affect the image?
user avatar
27 votes
5 answers
46k views

Save all render passes to EXR image?

I am having an issue with EXR file export that I did not encounter in previous versions of Blender. I used to be able to render a render layer with all its passes and get all the passes included with ...
Sangreelah's user avatar
26 votes
4 answers
19k 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:
Thom Blair III's user avatar
25 votes
5 answers
21k 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 ...
Thom Blair III's user avatar
25 votes
5 answers
17k views

How to visualize a value resulted from math node?

How to visualize a value resulted from math node,or just to know it. I tried the way of scaling this value to the scene size and then pick the color and get the value but I want more effective way to ...
Omar Emara's user avatar
  • 22.6k
24 votes
3 answers
31k views

How can I get a Depth of field render pass?

How can one make a render pass with black and white data to display depth of field based on the Settings > Camera dof settings? I want to blur or defocus in the compositor, similar to the way it is ...
dimitarsp's user avatar
  • 1,386
22 votes
3 answers
5k views

Scrolling credits

I used blender as all in one application. I model, animate and compose in it. Now I need to add a simple scrolling credits at the end on an animation. I want to know if there is a easy way to make ...
PhoneixS's user avatar
  • 1,874
22 votes
2 answers
9k views

Shadowless render pass

I would like to have full control of the shadows in post production. That's why I would like to have A shadow render pass containing only the shadows of my scene A shadowless render pass containing ...
Antti's user avatar
  • 1,767
21 votes
2 answers
25k 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: ...
gandalf3's user avatar
  • 157k
20 votes
1 answer
11k views

Controling compositor by python

I've been looking at the python code loging of Blender. But in there things get loged as mouse clicks. What i like to do is combine a few images into a larger one using compositor, but i need control ...
user613326's user avatar
20 votes
2 answers
9k 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 ...
kizlink's user avatar
  • 325
19 votes
2 answers
47k views

How to zoom out of the backdrop in the compositor?

The Backdrop Image in my compositor is too zoomed in because my image is high res. How can I zoom out?
Joseph Farah's user avatar
18 votes
2 answers
2k views

How do I use the compositor to output colour based on the depth of objects?

This setup seems like it should work, but it doesn't.
IndigoLily's user avatar
18 votes
3 answers
12k views

How to get a smooth curvature map from a normal map?

I am trying to generate a smooth curvature map from a normal map. I already know how to generate a sharp curvature (from this post: How to convert a normal map into a curvature map ) Here is the ...
Danyl Bekhoucha's user avatar
18 votes
2 answers
4k views

How to save the render result within Blender

Is it possible to render an image and have blender remember it, so that next time I open the file the render result will not be blank? I am not talking about saving to an external file. Specifically ...
PGmath's user avatar
  • 25.2k
17 votes
3 answers
21k views

How to create a gradient backround in the compositor?

I want to add a gradient background to my render, but within the compositor (not with the actual background world setting of the scene). I would also like to don't have to use an image (neither ...
Polosson's user avatar
  • 6,564
17 votes
1 answer
3k views

How to achieve screen tearing effect or video glitches

I do not know at all what this effect is called, therefore I cannot search for the answer on the web. I am referring to the thing where the RGB color will shift individually when the camera jitters/...
Technopath's user avatar
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
16 votes
2 answers
4k views

Make the flame of a candle more yellow

Here is what I have so far: The issue is The candle looks like a light bulb... when I tried to make it more yellow via RGB Curves the whole thing got more yellow: Can anyone help me out? Thanks!
Pythogen's user avatar
  • 897
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
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
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
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
17k views

Using scenes and render layers to composite an object isolated on white background with shadow

I composite 3 individually rendered and saved files to achieve the look of an object isolated on white with a proper shadow: image file of object floating with alpha background image file of a render ...
Qutorial's user avatar
  • 3,322
15 votes
1 answer
4k views

How do you calculate square root with nodes?

I'm creating my own merge functions in the compositor, but I've run into a bit of a wall. How do you calculate the square root with nodes? Would one have to write a python node to do this? If so, what ...
H Petrus's user avatar
  • 341
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
14 votes
4 answers
15k views

Color correction in the compositor from the video editor

How can I connect clips from the timeline in the video editor to the compositor to add some nodes-color correction, rgb curves etc., to every single clip, or to all of them at once?
user1034's user avatar
  • 141
14 votes
4 answers
4k views

Where do the white lines come from in my composite?

I'm having this issue for years now, and I'm not sure if I am doing something wrong on my end, or if what I would like to achieve - or expect to see - is even possible. My question is about ...
aliasguru's user avatar
  • 11.2k
14 votes
2 answers
17k views

How to convert a normal map into a curvature map (per pixel curvature)

I am trying to generate a sharp curvature / cavity map in the compositor from a normal map but I don't know the node setup. Here is my reference: http://polycount.com/discussion/comment/2273084/#...
Danyl Bekhoucha's user avatar
14 votes
3 answers
22k views

How can I use the compositor on the result of the sequencer?

I recently ran a renderfarm on a file with some compositing setup, but I forgot to set the composite output back to the Composite node instead of the Viewer I was temporarily using. Since the node ...
wchargin's user avatar
  • 9,452
14 votes
2 answers
1k views

Is there a way to get rid of this square artifact coming from lens distortion?

I've got a noisy render that I'd like to composite with slight lens distortion (Fit=True, Distort=0.03, Dispersion=0.001): I'm noticing a repeating pattern of square artifacts in the output of the ...
ajwood's user avatar
  • 10.1k
14 votes
1 answer
2k views

What are the denoising passes useful for in 2.79 experimental feature set?

In 2.79 when experimental feature set is activated, there are some new passes available to the compositor if Denoising is enabled. The new passes that are there after rendering the denoising pass ...
Timaroberts's user avatar
  • 12.4k
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
  • 36.7k
13 votes
1 answer
3k views

How can I create and project a symbol/rune on a sculpture? (like Blizzard's games)

How can I create and project a symbol, rune or logo to a sculpture and make it look like it is from a Blizzard game? What are the sculpt brush settings to project it on any surface (flat or round), ...
Danyl Bekhoucha's user avatar
13 votes
2 answers
4k views

Stacking cycles renders in the compositor?

There's a blog post going around about a plugin that uses ImageMagick to stack Cycles renders together. Why can't we do this in the compositor, and with a still frame? Is there a way to "get ahold ...
Matt's user avatar
  • 11.2k
13 votes
2 answers
20k views

How can I add Lens Flares/Halos?

Is there an addon, or an easy way to add lens flare effects or light aberrations in Blender? I've been using Blender for a while now, and it's very time consuming to always have to export to another ...
Wilhelm's user avatar
  • 686
12 votes
3 answers
16k views

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

This is what I have so far: The rendered image has a transparent background, but the glare filter creates an output with a black background, so after merging the two togheter, the background turns ...
tacofisher's user avatar
12 votes
3 answers
2k views

Can the compositor be used to batch process images?

There are tools to batch process images already of course, (such as ImageMagick), but this isn't as flexible as Blender's compositor since they typically perform linear operations and don't have the ...
ideasman42's user avatar
  • 47.5k
12 votes
2 answers
18k 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 ...
Thom Blair III's user avatar
12 votes
3 answers
22k 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 ...
Corwin's user avatar
  • 121
12 votes
1 answer
20k views

Use custom properties (variable values) in the node editor

An object's Custom Properties panel looks like a great way to inject variable values in the Compositor: However, there does not seem to be an Input that defines a reference to the Object Data's ...
Dave Jarvis's user avatar
12 votes
1 answer
1k views

Recreating Mandelbulbs with math nodes

I'm trying to recreate a Mandelbulb using Volume and math nodes in blender. I have been able to create a Mandelbrot with math nodes but I am having problems making it 3d. I tried translating this ...
Jonas Dichelle's user avatar
12 votes
1 answer
2k views

Blender (Cycles) Manual DOF

Is is possible to increase the depth of field in cycles while keeping the same blur size? I know this is not physically correct, but in some renders this would be useful. Here is a demonstration of ...
Matthew D. Scholefield's user avatar
12 votes
2 answers
4k views

What is the workflow for compositing Fire/Smoke with Cycles

Since fire/smoke is currently only supported in the internal renderer, what are some good workflow ideas for bringing fire and smoke into a cycles scene. My current idea seems too labor intensive: ...
Johnnygizmo's user avatar
12 votes
1 answer
3k views

How to utilize the denoise passes to build a denoise node network in the compositor

I've built custom denoising node networks before in houdini's compositor, using raw passes combined with noise reduction nodes, but I'm not sure how to utilize the various blender denoiser passes to ...
user3597862's user avatar
11 votes
5 answers
10k views

Glow effect invisible on transparent background

I'm trying to render a lightsaber on a transparent background to use as game sprites. I've followed a tutorial on youtube to create the glow/blur effect and it worked great on a black background but ...
BogdanM's user avatar
  • 111
11 votes
2 answers
3k views

What are nodes, and how do I use them?

I'm a bit new to Blender, and in trying to learn more, I've stumbled across nodes. What are nodes, and how do I use them?
TodorokiM's user avatar
  • 393

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