Questions tagged [cycles]

Cycles is a ray tracing render engine that can be used to achieve photo realistic results in Blender. It was introduced officially in 2.61. Use this tag for any Cycles related posts.

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74
votes
6answers
91k views

How to avoid noisy renders in Cycles?

I know that this question is a bit old or maybe overdone, but I'm running the latest edition of Blender and when I use the Cycles engine I get really fuzzy results and I can't find a simple, non-...
19
votes
8answers
19k views

Why does my object not show up?

This is meant to solve this problem once and for all. What is every reason an object isn't showing up in a render or viewport in when using the cycles render engine?
14
votes
2answers
10k views

Add a transparent image on top of a material [duplicate]

I'm designing this animal-type creature, and want to add a transparent .png image to its face with the face features (object has a subsurf). On the left is the image with the features, on the right is ...
41
votes
9answers
35k views

How to reduce fireflies in Cycles?

I often use Cycles' built in Glass BSDF shader to achieve realistic refraction effects, but in many cases, it seems that Cycles' glass caustics creates an unfortunately large number of fireflies (...
29
votes
2answers
109k views

How do I bake a texture using Cycles bake

I created a interior scene and i don't know how to bake a texture using cycles bake.
43
votes
6answers
33k views

How to illuminate the darkness inside glass objects in Cycles?

My model has a clear plastic (or glass) dome with objects inside. The objects appear dark. I've tried the glass shader with color 100% RGB, with very small IOR, and using just a refraction shader. ...
100
votes
2answers
30k views

Render with a wider dynamic range in cycles to produce photorealistic looking images

To get images that seem more photorealistic, not only a much wider Dynamic Range is needed, but also having the color information desaturate towards white as it would happen in an overexposed ...
85
votes
4answers
200k views

Enabling GPU rendering for Cycles?

I want to enable GPU rendering, but there is no option in User Preferences > System: Why is this? How can I get cycles to render using my GPU?
79
votes
2answers
77k views

How is Cycles different from Blender Internal?

How does Cycles work and how is it different from Blender Internal? Which is better?
213
votes
3answers
291k views

Can Blender render pngs with the background transparent?

I would like to render an animation as a series of .png images with transparent backgrounds for use in a video. Is this possible?
57
votes
3answers
295k views

How do I put an image texture on a material in Cycles?

I am creating a model of a glass and I would like to put a drawing on it (a png picture). I know how to do it using Blender Render, but not with Cycles Render. Help :)
7
votes
1answer
3k views

Strange black shading. Cannot fully light mesh. (Cycles)

Here is the viewport in material view. The node setup is just a PNG texture into a diffuse shader. And this is in rendered view. I've tried using environmental lighting as well as a directional ...
32
votes
3answers
18k views

Control Cycles material nodes and material properties in Python

How can I define the different properties of an Cycles material? Such things as glossy, glass, diffuse, RGB-color, emissive via Python scripting?
17
votes
1answer
4k views

Black artifacts when looking through many transparent objects?

Using v2.73, cycles and a very simple scene: an array of cubes, no big deal. If I set the shader's material to transparent, the cubes in the foreground do become transparent but those far away in the ...
6
votes
3answers
5k views

Why does an object with a glossy shader render in black?

When I apply a glossy shader to the material of my text, the text becomes just black. Why? I have lamp and everything, but the problem persists. The text is red before I add the glossy shader. I'm ...
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 ...
4
votes
1answer
5k views

Cycles not rendering image or movie clip used as background in the viewport

First time I've used cycles rendering engine. I'm using a movie clip as the background in short animation. Selected RBGA under Property Tab, and Transparent under Film Tab. It looks good and ...
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 ...
22
votes
3answers
4k views

What are the technical differences between F12 render and viewport preview?

What are the technical differences between F12 render and viewport preview render, if any? This is all the documentation I could find about Cycles viewport rendering: interactive rendering can be ...
26
votes
3answers
13k 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 ...
43
votes
2answers
16k views

How do I convert materials from Blender Internal to Cycles?

I know this may be a tough or confusing question, but I have numerous existing materials I created and reuse for a project, which were all prepared for Blender Internal. Now, I want to start the ...
11
votes
1answer
19k views

Image Alpha Background Renders Black when using “Import Images as Planes”

I must be missing something here. I'm doing an extremely simple Import Image as Plane using the AddOn and the imported image has an alpha background but it renders (and even previews in the material ...
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 ...
10
votes
1answer
4k views

How can you smooth the edge between two materials?

I have created this with cycles: But the edge between the glowing and non glowing materials is very sharp. The material was manually applied to faces in edit mode. Is there any way I can smooth the ...
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
4answers
27k views

Rendering smoke in Cycles?

I am trying to render smoke in cycles, but the relevant blender manual page is designed for Bender Internal. I have everything set up except for the material. I imagine you would set up the material ...
15
votes
3answers
6k views

How to properly render smoke on a transparent background?

When rendering volumes with Film > Transparent enabled, the alpha appears to be the wrong type (premultiplied/straight). In the 3D view it works as expected: This is a known bug. Is there any way to ...
6
votes
1answer
3k views

Transparent textured planes produce black artifacts

Having problems with hair transparency using cycles. I ported over a model from daz studio (have done this a few times before with no issues). Using a simple mix shader, transparent top, diffuse ...
33
votes
3answers
40k views

How to make a cycles light emisson object invisible to the camera?

In my scene it is required to position the lights close to the main object like this: How I can make the light source invisible to the camera?
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 ...
12
votes
3answers
19k views

How to place a .png texture with transparency over a material

I am trying to create a low poly face with a face from a .png file. The issue is I already have material placed for hair and skin, as shown in the picture below. I have created a .png file with a ...
13
votes
2answers
9k views

Cycles : shadows on smooth shaded mesh, strange behavior

I wonder if this is a bug, or if I missed something... When a light hits tangentially convex surfaces with "smooth shading", the shadow on this surface seems to "partially ignore" the smoothness of ...
15
votes
2answers
12k views

Render shadows over a transparent background in cycles

I'm trying to make a logo that will be on the header of a website. What I'd like to achieve, and the reason I'm using Blender, is the projected shadows on the background looking perfectly real (as ...
9
votes
1answer
3k views

Render semi-transparent volume with cycles

I want to render an image of a fire in cycles, but as a png with a transparent background. Without a transparent background, the output image looks like this: But as soon as I tick the "Transparent" ...
10
votes
1answer
5k views

Texture is missing in Cycles?

Because I am pretty new to blender I watched the tutorial Introduction to Texturing with Cycles in Blender from BlenderCookie.com. I loaded this texture onto a sphere but then in all views the ...
23
votes
1answer
3k 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?
25
votes
1answer
46k views

How can I render an object with an hdr background?

I have an object with an hdr for the background. What do I do in Cycles to render the background with my object? How is this different from an ordinary render in Cycles? The hdr is a big one, 350MB.
4
votes
1answer
2k views

How to make beveled 90 degree corners on a curve better?

I know the title is a mouthful, but this is the problem: I made a curve with 90 degree corners, like so: I then beveled it, and this was the result: As you can imagine, this isn't very pretty. I'm ...
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
3answers
24k 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 ...
30
votes
3answers
43k views

Make a gold reflective object

Brand new to blender, and I'm trying to make a metallic object that is reflective. There are lots of tutorials on youtube, however none of them are compatible with blender 2.71 with the cycles render....
9
votes
1answer
11k views

How to set render engine in blender?

I'm new to blender. How do you change the render engine? According to this video, the button should be along the top. I've searched google, and the blender documentation with no luck. https://www....
9
votes
1answer
4k views

Setup a decal material in cycles [duplicate]

I'm trying to setup a image decal in cycles, and I can't figure how to setup the nodes to work fine. Does anyone know the solution? blendFile
8
votes
4answers
7k views

EEVEE and Cycles render lighting differences

I get different lightning render with the same scene camera setup. Cycles render (both experimental and supported feature set) gets weaker lightning and needs more energy. How can I get the same ...
37
votes
3answers
14k views

Iridescence In Cycles?

Is it possible to create an iridescence shader in Cycles? Specifically for something like DVDs, soap bubbles, engine oil, etc.. I know about this technique for a DVD material, but it doesn't properly ...
23
votes
3answers
20k views

fluid in a glass

I am at beginner level. One of the projects I am doing is to create a glass with fluid. Like a glass of water or a glass of wine. Now I can find quite some tutorials on how to create the glass, but ...
15
votes
1answer
11k views

Liquid / glass interface IOR and normals in Cycles

When modelling / rendering a glass with liquid inside (in Cycles), which direction do the normals for the glass only surfaces, shared glass-liquid surfaces, and liquid only surfaces point? I have ...
8
votes
2answers
16k views

How do you animate image texture materials in blender cycles with keyframes?

I have an image texture material on a mesh already in blender cycles 2.75... I was wondering how to change the material with keyframes so it changes to different pictures in the animation... I tried ...
18
votes
3answers
5k views

Can I use Cycles materials with Blender Internal?

Is it possible to have a mesh coloured and textured in cycles and then have it displayed in internal? The only reason I ask is because I am building a log cabin and want to put some windows in. When ...