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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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Occlusion material (holdout) in Cycles

I am looking for a way to occlude one cycle´s material against another like when we setup the render passes from the passes property for the scene in a "holdout" mode. Think 2 spheres over a plane. ...
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How to animate cubes coming out of a mesh - like fire?

Ok, I dont know how to describe this other than a low poly fire sort of deal - imagine this but animated, so with a particle system of the cubes constantly separating/floating out of the big mesh: ...
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Set emission strength with alpha port of image texture node?

I encoded the colors and brightnesses of stars in the pixels of an image texture. The colors are in the first three components of the pixels' (r,g,b,a) arrays. The brightnesses are in the fourth ...
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Lights Not Affecting Scene

I'm new at lighting and texturing, so I've likely done something catastrophically stupid. Got a relatively simple scene, a hockey puck slides along the ice. Started trying to add some volumetric ...
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1answer
8 views

Weight-painting mesh containing only vertices

I created a mesh that has only vertices and converted it to a particle system representing the stars of the Hipparcos catalog. I used image textures to control the colors and brightnesses of the ...
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Artifacts when rendering irregular mesh in Cycles (black lines)

when I render with Cycles any mesh (specially planes) with a bit of irregular shape (by using previously, for example, a displacement map) some black lines appear on it. Those black lines are not ...
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2answers
26 views

Bump mapping vs Displacement (plus displacement nodes in Cycles)?

Learning Blender+Cycles (2.79b), I'm trying to experiment with vertex displacement and bump mapping. My understanding: bump mapping is to adjust face normals and create shadows/highlights suggesting (...
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Cycles transparent node brighter texture color in blender 2.79

Blender 2.79 alpha transparent part brighter color. Blender 2.78 work fine no problem. Material simple alpha is black and white vertex color. Any idea on how to fix this?
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11 views

Quick Smoke is showing the Smoke Domain

I'm trying to render quick smoke effects, but the boxes show in the render even though they don't in render view. Any ideas?
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1answer
20 views

Dynamic paint erase paint doesnt work?

Ok, I am trying to achieve exactly what this person did with weight painting but with output to material - the circle of "intersection" depends on the proximity of the brush object to canvas, so gets ...
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18 views

How to completely reset blender or find missing files

Something is wrong with blender and it's preventing me from extruding so I reinstalled blender twice but it still won't fix. I'd their any other way you can reset blender?
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1answer
31 views

Cycles: object is invisible if Shader Add uses 2 Transparent Shaders

I'm creating ice material, and it works fine, but only in viewport or with background (i.e. disabled Transparent in render). Here is my Nodes with result in the ...
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1answer
24 views

Long error message when try to extrude and input box is empty? (I can now no longer use blender)

I was making a house in blender using a tutorial. I have not messed with the settings I have only ever added some addons. Today when I went on blender and tried to extrude a circle it did not work and ...
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1answer
11 views

Trying to Bake Texture, but it's saying that it's a uninitialized image?

I'm trying to bake a principle shadier for a animation, but every time I try to bake it, it tells me that I don't have a image and it's not baking correctly. Don't know what to do.
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1answer
28 views

HOw to make sonic shader in cycles? [duplicate]

I am trying to make a shader like the blue shader below but can’t get it right. I have tried using a mix shader with two diffuse and a fresnel but it ends up way off from the what I’m trying to ...
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24 views

Cycles causing crash [on hold]

Hey there blender nation Im having a weird problem with my blender (2.79b - 2,77 via steam) and 2,79b via blender org, everytime i click to change to cycles engine the program closes, and on older ...
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1answer
26 views

Cycles replacement node for the BI “Lamp Data” node

I need to convert a node system made in blender internal render to cycles but I can't find a node that would replace the "Lamp Data" node. Blender internal node setup.
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36 views

Why does object go black after applying rotation and scale?

enter image description hereDo you know why this object in the picture goes black after I apply rotation and location to it? I have given it a subdivision surface modifier. Can you help me? Is there a ...
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15 views

volume shader, Z-combine / indexMA

I have two renderlayers combined together with the z-combine node. One layer contains a surface shaded object, the other a volume shaded object. (File 1) The result is not what I was hoping for. I am ...
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19 views

“CUDA error at cuCtxCreate: Out of memory” Nothing has been changed since the last time I used blender

I'm getting the error in the title even when trying to render just the plain starting cube. I haven't changed anything in blender since the last time I used it a few months ago when it worked fine. ...
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23 views

Glossy BSDF not found in Blender 2.79 Cycles

Simple (and may be stupid) question - how to include (if it should be included or plugget in) Glossy BSDF in my Blender 2.79? I'm follow a manual video (this), where user just input "glos" in Cycles ...
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22 views

Holographic Label Material in cycles [duplicate]

I want to create this effect that is on supplement labels mostly. I did a research here but i can't apply it with an image texture of the label. I just can't mix them together. Do you know any way ...
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33 views

Needed help with Iridescence [duplicate]

How can I make an iridescent material based off from this?
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26 views

Scripting challenge for noob

So, I've been learning Blender from courses online at Udemy and through Youtube for a while now but I just cannot seem to make any sense of the tutorials on scripting and I have a very specific ...
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12 views

multi gpu also for viewport?

does having more than one gpu also have an impact on speed of the rendered viewport in cycles ? (renderd viewport i mean the traditional shift z render ) or multi gpu rendering is only okay for the ...
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Mountain texture (rock) looks very unrealistic?

I made a mountain in blender I used a rock texture I found and when I first rendered it looked very realistic, I lost the file so I recreated it, but it now looks fake. The first original. The ...
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1answer
16 views

How to package my own CYCLES fork as an add-on for blender (as a .zip file)

I made a fork of the awesome CYCLES render engine. I wonder, can I package my fork as an add-on for blender? I know that there are many alternative render engines for blender (e.g. LuxCoreRender). ...
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Problems creating new mesh- not showing up/invisible?

So when I try to add a sphere, it doesn't work properly; instead of a sphere, nothing shows up except the point with the circle around it as you can see to the right of the model I'm working on. I ...
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1answer
45 views

Needing help creating an fluorescent glass shader

How can I make this glowing glass material like this?...
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34 views

Black Spots on character

When I render this at 32 Samples it goes black on the neck & and the face. Why? https://www.dropbox.com/s/b3fab5ke65yxl67/Goku%20Black%2C%20Black%20Spots.PNG?dl=0 Ambient Occlusion is also at 0....
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24 views

Is it worth swapping to a faster shader for non-camera rays?

The old trick of using 'Light Path > Is Camera Ray' as the factor for a mix between the shader seen by the camera and a simpler 'fake' shader that is never directly seen (except maybe in reflections). ...
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1answer
41 views

Multiple instances of a single image node, each with a different vector input

I need to use an image node for multiple different color inputs, but each with a different UV vector assigned to it. This issue is quite hard for me to explain, so here's a drawing of what I'm ...
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2answers
62 views

Interior scene has a lot of noise, even with optimized settings [duplicate]

I can't figure out why my scene is still so noise after I optimized the scene / lighting settings. I have the following settings: 1. Sampling: I increased the Sample size to 2056 I'm clamping ...
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1answer
21 views

How can i exclude rendering an enviroment texture in cycles but keeping all the other settings?

How can i exclude rendering an enviroment texture in Cycles but keeping all the lighting and reflections that i get from it? like, rendering with the background, but make it black (not transparent) ...
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NOT SOLVED Why does cycles keep making these back squares appear

so i was trying to render a thing in cycles an noticed this happening my thought was, maybe i need to do the backface culling thing and tried to do that, then i noticed that this happens how do i ...
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2answers
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Z-Buffer render gives unexpected results

I'm rendering blender's z-buffer to an image using render layers under compositing in cycles, but I'm noticing unexpected results. Here is an example of a typical z-buffer render (not from blender). ...
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How to add chrome material WITH Black patches on my model

I'm a beginning Blender user and I've just made this Lightsaber model. The model is complete but I need to add it's texture. Now of course a lightsaber has a brushed-chrome finish, but the particular ...
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262 views
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Project scene to plane in real-time

I understand I could render out the view my camera and then just that as an image texture, however, I want to try and achieve this effect in real-time. The idea is derived from an effect present in ...
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26 views

How do I exclude an object from AO in Blender Cycles?

I have a scene where black text is on a gray surface. With AO, this makes the text are to read. I want to eliminate AO on the gray surface so I can see the black text, but keep it in other details ...
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18 views

Black Areas When Rendering (Other questions that have been answered dont work)

When I render this at 32 Samples it goes black on the neck & and the face. Why? https://www.dropbox.com/s/b3fab5ke65yxl67/Goku%20Black%2C%20Black%20Spots.PNG?dl=0 Ambient Occlusion is also at 0....
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1answer
25 views

How make UV Textured mesh with material instead of specific colour?

Just trying to replicate table with epoxy. But can't figure out how to create a complex material. I have a textured table top but can't replace black strip with a material. Eventually, I wanna get ...
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1answer
44 views

How to go to cycles? [duplicate]

I have these characters but I want to go to cycles but when I do the characters goes grey and purple. (Essentially The textures get removed from the character(s). Is there a way to switch to cycles ...
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71 views

How to make a geometrical pattern [duplicate]

08/05/18: Reposted due to on-hold marking by Duarte Farrajota Ramos, Ray Mairlot, Jaroslav Jerryno Novotny, cgslav, and Scott Milner. This will make it better! How can I make this pattern like this? ...
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1answer
128 views

How to do the geometricaly-like texture

How can I create a geometric pattern texture like this in blender?
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How to export obj with mtl and textures in cycles engine?

When I export obj with materials added, I do not see the texture images path written in the mtl file. How do I fix this? Also how can i import a obj with mtl and texture in cycles engine?
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32 views

Why does the shadow cycles setting dim light going through transparent materials so much?

I was following, yes, another one of those blender guru tutorials, as I do from time to time.. however, there is an effect here that I cannot explain. Under the "object" tab there is a shadow setting: ...
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1answer
13 views

Texture Coordinate overlays another texture on my existing texture

I'm fairly new at Blender so there are so many ways I could be doing this wrong. Right now I'm working on a cobbled street but when I try to scale it using a mapping and texture coordinate node it's ...
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32 views

Weird results when baking a texture or texture atlas in Cycles - Blender v2.79 (Windows 10)

Good afternoon all. I want to start out by saying that I am not a 3d artist by any means but I am having some issues when baking a texture or texture atlas in Blender cycles. I have made some voxel(...
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1answer
926 views

DOF with a mirror?

I am working on a Medusa scene where she is staring into a mirror. We are looking at her from behind, looking into the mirror. I want to use DOF, However if you look closely the mirror is completely ...
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1answer
39 views

Texture looks good on some faces but not others

I'm using a procedural stainless steel texture in Cycles. I've Smart UV Projected all faces ("Correct Aspect" is checked, "Stretch to UV bounds" is unchecked). After unwrapping, some faces look ...