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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World Background Changes From Eevee to Cycles

I have a SkyGradient Node as follows, made initially in Eevee: The background in eevee looks like so: But when I switched to cycles, the background gradient disappeared and turned into a solid color:...
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Hdri mix(light from one hdri, background from another)

Can I use background from one hdri, but light source from another one? For example, I have one hdri texture that conected to the world output. The only thing I need from this hdri is a light source. ...
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Some Objects are Grey in Rendered View

I'm newish to Blender and am making a dark Halloween scene. Basically I have distributed a bunch of trees using a particle system, and they are textured and look completely fine in Material Preview ...
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Shading issue while scaling one side of cylinder

When I scale a cylinder from one side and then do Shade Smooth and Auto-Smooth some shading issue are still visible in the image. I tried to increase the Auto-Smooth, value but it doesn't give the ...
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Shadows are not getting rendered properly

I am new to blender and trying to render an image. However in the render, the shadows which are visible in viewport are not displayed. I tried searching a lot, but unable to get what is it I am doing ...
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Problem with fluid type domain & fluid object type inflow

I baked mesh and data both, water(fluid) simulation in domain and fluid flow from plane objects was working fine until i rendered an animation out of it and closed Blender The next day when I came to ...
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Rendering multi-view directly to disk instead of RAM

I've set up a Stereoscopy -> Multi-View rendering to render hundreds of cameras with a Python script. Multi-view renders the cameras much faster than looping over ...
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OpenCL No compatible GPUs found for path tracing

I have a radeon rx 580 GPU I had been able to render with the GPU with it. Both 2.8 and 2.9 versions used to work. I've been doing other art so I haven't rendered anything lately and tried today. ...
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Render not working in cycles while hair particle is active [closed]

So whenever I try to render my project and the hair particle is active the render does not move at all, it's locked in 0%. when I disable it renders, what can I do?
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How does the Sobol pattern work, and why can I sometime see spiral pattern?

I would like to have little information / science popularization about the sobol pattern, Monte-Carlo integration (or other pattern) for a curious 3D artist that use blender tool every day and haven't ...
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Why did my materials become weird after I apllied the scale to my cup? [duplicate]

I'm following the donut tutorials and I made some scale modifications to my cup so it matches the real world scale. The coffee cup used to look like this (ignore the ugly spoon): When I found a scale ...
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How do I make the shadow catcher show what's under it instead of the background colour?

In the image below you can see a cube, a shadow catcher that is under the cube (Looks like a grey plain), and a red plain under the shadow catcher. Right now the shadow catcher is catching the shadow,...
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How to get rid of inaccurate, jagged mesh shadows [duplicate]

I am using Blender Cycles for a project. At the time of rendering, I am getting inaccurate mesh shadows, as seen in the screenshot below. How can I make sure the shadows are rendered properly?
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Rendered image shown in final preview but saving it gives you a fully transparent empty image instead

I just finished rendering this simple scene. Everything looks fine right? Let's go save it! This is what it looks like when you open the image in Paint.NET. It's completely empty. Not even white, ...
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Dark patches in final render? - Blender (Cycles) [duplicate]

I'm relatively new to blender and I am roughly following an interior design tutorial. I wanted to see what my final render would look like, and when it was finished there were dark stops all over the ...
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Have strange noise in compositor in Cycles (Cycles X too)

I make render of smoke in cycles in blender 3.0. Render location in eevee and mix it in copmositor. BUT in render a have no noise and have it in copositor. How I can fix it? Files in attach - ...
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Holdout like error in renders affecting particle emission layer only

having a bit of a strange one and I've been through everything I can think of to try and identify a cause. Ive got a render which outputs perfectly for 98%. Im seeing two strange issues which I cant ...
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Mantaflow water simulation leaving too much space between particles and colliders

I've been getting this problem where the water is colliding properly but at an offset. I've tried tweaking every setting and still nothing. No tutorial talks about it, nor have I found any posts here. ...
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Grey render result [duplicate]

new to blender and I can't figure out why is it. I attach the link of the file https://drive.google.com/file/d/1dXX1Yx2eBiQcZbqe8wXSoKhHJdYOjbH0/view?usp=sharing I can't tell if its the camera or the ...
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Grease Pencil lighting issues

I have this project ongoing where I have a 3D based scene, with grease pencil painted on it to make outlines and add details with a "hand drawn" effect. The scene looks like that : All the ...
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The glass material of my cup is too much reflective! [closed]

The cup surface instead of showing the dark coffee inside, it's rather showing the blue ground. This is rendered in Cycles
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Transparent BSDF acts differently in render than in material mode

I made an effect with the transparent BSDF that I took from here. I applied the same nodes to a human from the human generator so that the skin disapears the same way the object disapears in the video....
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The result of rendering cycles is not the same color as Eevee in blender 2.9

Recently I followed a tutorial on youtube about modeling a stage, here is the tutorial link: https://youtu.be/9r6WX_rPf3E The Eevee results were as expected, but when I rendered on Cycles, the ...
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Blender Optix doesn't work with my RTX 2070 (worked before) [closed]

When I try to render with Cycles using Optix it doesn't work on my RTX 2070 even if my GPU is detected. Doesn't work since I installed the latest driver: Nvidia studio 472.12. Do you have a solution? ...
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Reflection in mirror - ingore boolean operator

I'm working on a interior design of a room. To position a camera I have removed one wall of the room using boolean operator. I want a mirror I have in a room to ignore this and reflect the wall not ...
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Cycles Emission Material Receiving Shadows

I am trying to follow this tutorial. Around 36:00 in the tutorial, he adds an UV sphere with an emission material that will eventually become the sun. However, when I follow the exact same steps, my ...
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Laser and mirror experiment doesn't work

Why doesn't this work? I know that Cycles isn't a physically accurate rendering engine, but this seems like the lasers beams should bounce off shoudn't they? Here's the file to test: https://pasteall....
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Create a realistic glass material similar with this one[image attached]?

I am traying to create a molecular scene similar with this one: I have attached here my blender file: https://drive.google.com/file/d/1GFdbRQH5UCvOVWDJdgBlhnNIdrRgqhwV/view?usp=sharing I encounter ...
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2answers
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Black hole behind glass

I made a black hole following this tutorial, and I want to put it behind some glass. However, because of the way the shader uses the facing node from the layer weight (at least I think this is what ...
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1answer
37 views

Why does my AO make my character appear to have holes in it?

I'm currently trying to bake an AO, but I've encountered a problem. While the clothes look alright, the body has the appearance of having holes in it. I've done some research on this Stack Exchange ...
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1answer
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Blender Render is transparent and not showing anything

All my meshes have the render and view check on. I tried using different cameras(having them as the main camera for rendering). My composite also has the input going into the output. I haven't touched ...
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How to fix shadow artifacts on a simple planme

I have a simple rectangular cube mesh that renders correctly in Eevee but has strange shadow effects on the top and sides when I render in Cycles. I've confirmed there is no Custom Split Normals Data, ...
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What is the most efficient way to match green screen footage to a Blender scene?

I have green screen footage I chroma keyed, color corrected, and exported in DaVinci Resolve. I matched it to a still image of a Blender scene (Cycles). When I import the footage into the actual ...
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How to turn on antialiasing in rendering, using the Cycles render engine?

I have an option of anti aliasing for the 3D Viewport, but not for Cycles render output. I want antialiasing in my render too. The rendered image edge is aliased even when i am using high resolution. ...
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Feather a plan edge which is used as shadow catcher

Hello Blender Guru Artists, I am facing a problem and need your expertise. I am using a plane right below my 3D model as a shadow catcher using Cycles rendering engine. The plane is casting the shadow ...
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How to fix footage from green screen that's blocking volumetric lighting, but not the other objects

PROBLEM Hi, I'm using Blender 2.93. I have footage shot in a green screen that's been chroma keyed, and imported into blender with Images As Planes. It imports and ...
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Blender crashing when using Cycles [closed]

I just started learning/trying out Blender a few days ago, and I'm taking the Blender Guru Donut tutorial. I'm in the rendering part, but when I switched Render mode to Cycles and moved around a ...
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Blender 2.93.5 Render stops in minimized window [closed]

Last night i had blender rendering but it stoped trough many minutes when blender's window was minimize. I using w10. Thanks for your advice.
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Blender Refraction BSDF too dark

as you can see in the first picture if i use an refraction shader on a plane in front of the fire/persons it´s way darker then without. I want to use it for an heat distortion because of the fire. I ...
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24 views

How can I prevent colliding Cloth Objects from wrinkling each other?

I am trying to create a model of paper being blown by wind using a model with a Cloth Modifier and a Force Field of wind. However, when I play them in animation, the Cloth objects that collide with ...
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1answer
29 views

Do unapplied Boolean modifiers affect render times?

I was wondering this, because I did a cut on a lot of meshes and if I want to move one of them, my pc will slow down by a lot.
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Poor normal map result when the model is lit by a strong light

I have modeled a detail piece for a project I'm working on. I've used the multi resolution modifier to sculp it, and then I baked a normal map from a higher subdiv level to a lower one. Standard stuff....
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24 views

Wrong depth for transparent geometry with a lot of layers

I'm trying to render models and composite them into an existing image with known depth. However, one of model I use has hair made with a lot of semitransparent strands. When I render it with Cycles, ...
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Eevee viewport and render looks blurry (won't display textures and lights as expected)

I´ve been having some troubles with eevee, the thing is that it looks blurry. It won't display my textures and lights as expected. It just looks like if it was "underwater". Besides, cycles ...
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Eevee diffuse pass render bug?

I hope this is the right place to post this. To see the "bug", please go directly to the observation part. The setup We need to export the diffuse pass render in low resolution of a scene, ...
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1answer
47 views

What's wrong with my normal maps?

I'm attempting to bake a normal map from a sculpt. Some of the UV islands intentionally overlap for the purpose of mirroring certain details and conserving space. However, the normal map doesn't look ...
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Weird halo around partially transparent objects in Cycles

I'm working on some Y trees for a game, and I noticed that when I switch to rendered view in the main viewport (using Cycles), the trees have this weird glowing halo around them: Here's what they ...
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(De)noise artifacts in animation

I have a simple scene with focal point animation, and when I render it there is some crazy movement in the highlights, that I'm pretty sure is due to the denoising, i.e. that the noise pattern changes ...
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24 views

Problem projecting sun beams from inside an object

I am creating the Atlas relic from Rise of the Tomb Raider and my idea for the final result is to create an animation spinning while the lights are slowly flashing. I followed this tutorial to do the ...
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Procedural texture shows up in eevee/viewport shading but not cycles

I've made a procedural texture, and I want to bake it, but the texture doesn't show up in cycles. Here it is in cycles: And here it is in viewport shading/eevee: And here is my nodes: I'd ...

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