Questions tagged [cycles-render-engine]

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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1answer
209 views

More than 5 mix/principled shaders turns material pink in material preview but not in rendered preview? No missing textures

I'm doing a 3D map with a single material only using masks to change between terrain types, but once I add more than 5 mix/principled shaders the material turns pink, this issue just happens in the ...
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1answer
31 views

Shader output as factor input for other shader nodes

A bit new to shader nodes so may be a dumb question.... Render engine is Cycles but same issue with Eevee. I am using a Glossy BSDF node to generate the reflection window on a dome. Plugged straight ...
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1answer
44 views

How do I fade a procedural clouds on the edges of a bounding box?

I have procedural clouds made following Default Cube's tutorial, the node group looks like this: The whole thing is bounded by a large cube, and I want to fade the clouds near the edges so that they ...
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21 views

Cycles Fire + smoke png renders save empty

I am rendering 2 different fire + smoke simulations with seemingly the exact same settings. One saves to PNG with alpha perfectly. The other seems to render properly but the saved png is blank. After ...
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1answer
34 views

Rendered trees look flat

I am working on a small scene you can see below on the render picture. It's almost done, but I have a problem with the trees. They are fully 3D objects, with some textures UV unwrapped. My problem is, ...
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14 views

How to cast a tree shadow

I want to create something like this image does. I tried placing a png image as plane in front of the sun, but the shape is really blurry and unprecise unlike the reference image here. Anyone know how ...
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1answer
470 views

Blender eats up all memory and crashes upon simple small texture

So this one is really infuriating me as I cannot figure it out. I've created a terrain with textures and a skybox in layer 1 just fine and all looks well. It's also very responsive and works great, ...
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0answers
12 views

how to change temp files from cycles render to be handled on another disk drive?

I have a small C system with 14 gb left but three more disks with over 300 free space each, and yet when i render with cycles the space for the files to render is taken from the main C drive, how can ...
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1answer
296 views

Cycles - Bake - Black patches

I have been trying to figure out why my object is rendering so dark. I have been messing with diffuse and other settings through reading other help forumns. I still can't figure out what the issue is ...
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1answer
40 views

When using “Bake from Multires”, the resulting normal map has odd pattern along topology

A very peculiar, corrugated pattern appears on the baked normal map from the Bake from Multires option. Blendfile: https://pasteall.org/blend/53326714fd7e42ab966a58667ca05faf Everything I've done: 4k ...
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1answer
21 views

Why is my render is a completely different perspective than what I am seeing through the camera view?

Unfortunately I cannot share the file but here is what's up. I am rendering a car model I made. I positioned the camera to render a front 3/4 shot and it worked just fine. Next, I rotated the model ...
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0answers
18 views

How to get spot and shadows that show up in eevee to show up in Cycles?

In eevee the shadows show up, and the spot light circles. In cycles everything looks better, but the spot circles are gone, and the shadows have mostly disappeared. Cycles Eevee What am I missing ...
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1answer
37 views

Artifacts in cycles clouds and volumetric atmosphere

I am shading a planet, made up of three ico spheres, one for the planet itself, one for the clouds, and one for the atmosphere. However, the cloud layer is introducing this weird band/artifact on the ...
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3answers
7k views

GPU Compute (CUDA) Frequently Crashes Computer

I've run into a rather irritating issue when dealing with a somewhat computationally complicated scene (attached below) that is essentially just a pile of volumetrics and lighting. Whenever I set my ...
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23 views

Textures in cycles render becomes “spotty”

I am trying to render a scene in cycles. It looks fine in render preview (first picture). However, after rendering in cycles it comes out pretty awful (second picture). I have no idea why this happens ...
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30 views

Different Materials appearing in Rendered View vs Preview View

in this model I originally applied different variations of a basic building material for a variety of objects. I later went back and changed the material of some of these objects as well as used Cube ...
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1answer
2k views

Cycles - rendered viewport really slow in Blender 2.8

So since months I am experiencing that cycles is getting slower and slower for me in Blender 2.8 and I thought with the release coming it might become better. However when I have a very simple scene ...
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8 views

MacBook Pro 2020 +eGPU +RX5700xt +Cycles Problem [duplicate]

Yesterday I received the Razer Core X with an AMD RX5700 XT Graphics card to use with Blender 2.92. Unfortunately, Cycles will not recognize this eGPU in the Blender System Cycles render device ...
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39 views

Cycles - circular artefacts in displaced PBR render?

I'm trying to model a PBR leather material, with displacement modifier. The mesh is heavily subdivided to make the leather appear smooth and get the creases to have the correct shading. However, when ...
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0answers
24 views

How does depth of field work in Blender?

I am currently writing a paper on different renderers, I have created a scene and rendered it with different engines (Arnold, Renderman, Cycles and Luxcore) and it appears that different renderers ...
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1answer
2k views

Normal map seams/blocky shadows in Cycles renders

So i was rendering models from games in Cycles and in some cases the shading looks terrible, shadows are very blocky and there are visible normal map seams. I increased the size of the lamp and tried ...
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1answer
208 views

Blender 2.8 crashes while compiling scene

enter link description hereI have a new Mac Book Pro - with 32 gig of ram plenty of disk space. Every time I try to render a scene using cycles I get through 5-30 frames and blender crashes. Any ...
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0answers
23 views

Randomizing texture coordinates has no effect on displacement texture position

I have run into the same problem as this old unanswered question, Cycles displacement material wrong uv mapping I can shift the vector coordinates of PBR textures on instances of dupliverts to break ...
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1answer
85 views

What kind of illumination to use to produce these 3D ball-and-stick atomic structure models? (specular reflection but no shadows)

I'd like to render a publication quality image something like the image below. I'll script the whole process so we can build many different structures without having to redraw everything, and probably ...
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54 views

How should I achieve this volumetrics lighting effect? [duplicate]

I'm an intermediate blender user, and I am working on a scene myself. I just don't know how should I achieve the lighting effect in the image on the right below (left one is mine). I also need ...
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1answer
23 views

Using the cycles experimental render engine, how do I use textures in nodes to create actual mesh geometry and not just bump?

I'm trying to create displacement on actual mesh, not just bump, by using texture maps in nodes and the cycles experimental render engine. This is to create more controlled surface geometry using ...
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11 views

Baking image noise and grain - need baking advice

I'm trying to do a simple bake - cycles, albedo only. It's for having people in Microsoft Flight Simulator scenery I'm developing. I imported the human figure from Make Human into Blender, and it ...
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29 views

Different render results if I render with CPU vs GPU

This morning I received a new computer with a NVIDIA graphic card and I wanted to test it with an animation that my previous computer couldn't handle. But I'm having some problems with the lighting of ...
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9 views

How can I fix the blocky shadows? (I am using cycles) [duplicate]

I didn't use a Subdivision Surface modifier because it messes up the form. Also when using Eevee I don't get this problem.
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33 views

mysterious light

I put in my scene a cube to block a light from outside and to fake a second floor above the stairs. However it did not blocked the light, the light from a hole in the ceiling was still polluting my ...
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0answers
14 views

Background color changes in render

I am having an issue with my render. I have set a plane to the background with white emmission color. In the viewport everything is as i want it to but when I hit render the background becomes dark (...
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1answer
29 views

Creating fantasy crystal-like object to composite in a photoshoot

first post here. I'm a beginner with Blender so I'm trying to get some advice on how to make the material part of a diamon/crystal type thing I'll add in a photoshoot. I already asked this somewhere ...
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1answer
65 views

Difficulty seeing through transparency on images as planes [duplicate]

I'm trying to import images as planes to make a diorama in blender, and with Cycles, the images have this strange artifact where you can't see through some of them: The black part in the image below. ...
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1answer
25 views

Cycles Render shows black screen [duplicate]

I'm using Blender 2.92, and Cycles Render, and it rendered how it should, however after adding a fluid simulation, whenever I try to render an image, by pressing F12, it just produces a black screen, ...
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16 views

How to make the mist/smoke spraying on an object? like a humidifier or a diffuser

here is the sample I want to make the mist came out from the ultrasonic plate or the mouth of the cap looks like its spraying upwards.
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0answers
31 views

Cycles takes an abnormally long time to render

I'm rendering an image in my animation using cycles to test out how long it will take to render a frame but it's been five minutes and blender hasn't even started on the first pixel. I know that this ...
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0answers
8 views

Why are my meshes showing up as invisible when I open a new file [duplicate]

I know that there are issues with AMD GPUs on versions 2.9 and above. I recently reinstalled 2.82 and this happens everytime I open a new file. My default cube shows up as what I can only describe as ...
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0answers
17 views

I cant render anything with OpenCL

I cant render even a cube in cycle, I use OpenCL and tried to render only with GPU, I have an AMD radeon rx 5700
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1answer
777 views

How to make something similar to rigid body joint in Cycles?

So I made a ragdoll horse in the Game engine using an armature and some hitboxes. I connected these hitboxes with Rigid Body Joints. Now I want to use this rig for animation. However, I animate with ...
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1answer
187 views

Cycles: Glass not rendering as transparent in CPU mode

AMD Ryzen 7 2700 8-core 4.1, 32 GB RAM, RTX 2060 (6GB VRAM) I have a glass and transparent BSDF set up correctly in Blender, and the texture set to alpha clip, and alpha hashed for shadows. The glass ...
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0answers
38 views

Implement own camera model in Blender

I need to create real-world cameras with Blender. My target workflow is: Use OpenCV to calibrate the camera model Use the results of OpenCV to create the exact same camera in Blender Since Blender ...
2
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1answer
200 views

Metallic multiply shading works in Eevee render but not Cycles?

Ive got 2 different meshes for one armature, one for base textures, one to give some parts of that texture a metal shine using a mask to avoid the non metal bits. In Eevee this works fine as I can set ...
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1answer
929 views

Large Ocean Texture & Boat Wash Material with Dynamic Paint

I've been trying to simulate a very natural boat water wash in blender, using dynamic paint and wetmap. but it just doesn't look natural. i've been searching online. and i found similar cases for ...
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1answer
516 views

What type of normal and specular map nodes is correct for these textures

I am creating a plugin to import some model files from a game to blender, with all the textures and materials created automatically. I am creating a principled bsdf node from python and assign ...
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0answers
12 views

Why is cycle taking only saved texture to render when EEVE takes the current texture? Possible to change?

I was experimenting with multiple uvmaps/textures painting... today, and I noticed something very disturbing (I lost like 1h on that thinking that my nodes where not configured properly...) Basically, ...
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2answers
240 views

How create a map based edge wear shader?

So basically what I have done is made a high poly bake in blender, now using said bake, I want to add edge wear. That is have procedural texture detect the height in the maps and shade the maps "...
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1answer
1k views

How do uninstall every single trace of Blender?

When I start Blender, the console pops up and the Blender windows goes into full screen, but the UI is not loading and the whole screen is gray. I recently switched my AMD card for an NVIDIA card. I ...
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0answers
31 views

My material behaves differently in material preview than in rendered view

I have a material which looks different in material preview than it does in rendered mode or in final cycles output. I'm using cycles for rendered mode. Blender 2.92.0. You can see below that the ...
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0answers
23 views

- Blender Texture Fail Cycles Vs Eevee

For whatever reason, the texture will display on Eevee Render but not Cycles Render? What is causing this and how do I fix this?
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2answers
520 views

Seams are correctly marked, UV's are messed up

I have retopologized a shotgun and marked all the seams where they are supposed to, and then Unwrapped it, and instead of getting nice UV's, i get this: Here are the seams: I have tried Applying the ...