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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3 views

Unexplained black noise around edges in cycles render

So I was just trying to bake a normal map for this mask model I made, the scene looks as follows: With nothing unusual going on. I try to test out the scene using cycles, but even without applying ...
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The front part of the object material doesn't render

As you can see the front of the castle is laking a material. It is supposed to be a stone wall and you can see it on the sides but for some reason it doesn't render in the front. Is there a problem ...
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Principled Volume not showing in render

I have a principled volume node attached to a cube, to create a bit of "fog" for my small scene. It shows in the viewport, but is absent in the render. For my cube, I don't have anything ...
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Why is my Final Render Losing Texture Detail when working with Cycles and Optix Denoiser?

The first picture is my material viewport The second picture is the final render using Cycles and Optix Denoiser (No COmpositor) with 1200 samples and 6.00 Light Clamp Is there any way that I can use ...
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How to stabilize Random Per Island for Meta Objects

I have a very basic AN setup where I vector jiggle the position of meta ball instances for a lava-lamp-like motion. I wanted to change the color as soon as an individual Meta Ball disconnects from ...
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Cycle Render Bug When I Try to Render Hair Particle

Cycle Render Bug When I Try to Render Hair Particle, I need help to solve this problem i use blende 2.92 Alpha and the problem seems to be the same with the older version of blender
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Blender 2.91.2 crashing randomly during cycles animation render [closed]

Blender has crashed seemingly randomly while rendering an animation. By crash, I mean it just closes, with no error or anything. This has happened multiple times already, so I know its not a one time ...
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Object Geometry Rendering Flat in Cycles

I've just run into an issue that I haven't experienced before. The majority of my scene looks good to me in regards to the lighting and shadows but for some reason, the desk and the floor are ...
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Hair particles causing cycles render to hang on 2.9

I don't know if anyone else is having this issue but for some reason a hair particle system is causing cycles renderer to hang at the initializing stage and I have to force quit blender. If I turn off ...
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1answer
33 views

Circle in top right hand corner of render [closed]

What is this circle in the top right hand corner of the rendered image? i have attached an image of the render i really cant see what it could be.
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Is it possible to shade objects in Cycles based on Z gradient, to highlight/darken edges?

I'd like to shade the edges of my objects darker, like a toon shader, based on abrupt Z depth transitions to neighboring pixels -- in other words wherever the Z gradient is high, darken the image. I ...
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Why does the rendering look way less quality in the shading parts than it does in the preview?

When I render my character, everything that is shaded kind of metallic, except the balls that are flying around the model, does have these triangles of low quality in it. In the preview everything ...
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Emission glow through glass materrial

How to create a emission material that will glow through glass material in Cycles render? (volumetric light) I have attached the project file here: https://drive.google.com/file/d/...
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Render slow, console log “Using fallback” and after start render process

When I want render an image to animation, I prefer to render by CLI. It's more quiet. But my last render appear with this message ...
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1answer
24 views

White Image appearing grey when saved as RGBA

I have a bit of a problem with my blender project. I need to render this as a transparent animation, so I'm using RGBA on PNGs The issue is that, whenever I save the white image as RGBA, it appears ...
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14 views

Polygon edges on the smooth object

I have a problem rendering a label. I shaded planes smooth, but somehow in render I see the edges. What's the possible solution to the problem?
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Seamless connection of meshes with different density

Can anyone advise how i should seamlessly connect to meshes of different density. This is the best that i have managed to get so far. The lower part of the image is a mesh from Flipfluids and it is ...
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1answer
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Shade Smooth not working in the render tab (even after recalculating/merging normals)

This weird flat shading is occurring on the curved surface even after shading smooth and merging normals. It is a model exported from Rhino as an FBX No modifiers applied. Viewport shading and edit ...
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1answer
61 views

Limitation of a Rolling Shutter effect for propeller

I am trying to create artifacts of a spinning propeller using cycles from this post. I have the propeller animated using 2 keyframes starting at 0 degrees, and ending at 80000 degrees over few frames. ...
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35 views

How to mix three different shaders on the same material?

So I came across some difficulties with the "Mix shader" node in cycles. I have 3 textures on a label: gold, paper and rough black letters. How can I mix these effects? I can make 2 ...
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1answer
31 views

Can not render via GPU ERROR Illegal address in cuCtxSynchronize() (device_cuda_impl.cpp:2016)

All of a sudden, my system stopped rendering via GPU. It renders fine via CPU, it looks like the error has something to do directly with my graphics cards too. I have tried rendering via CUDA and ...
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14 views

Why is blender rendering only at base clock speed?

I have a Lenovo Ideapad slim 3i, with Intel Core i5-10210U, 8GB DDR4 RAM, 1TB HDD, Intel UHD Graphics and Nvidia MX130. I did a blender project in this Laptop, and I set the CUDA preferences in ...
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Render image sequence works for first frame, but not the rest

I'd like to make an animation where there are water ripples using dynamic paint. I subdivided a plane which I used as a canvas and applied a UV texture to it. I used some UV spheres to create the ...
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Blender 2.91 smoke look fuzzy while I want it plain and smooth

Blender smoke look fuzzy while I want it plain Hello everyone, it's my first time doing this so I don't really know If I'm doing this right but here is my problem. I'm trying to simulate a character ...
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1060 GTX Ubuntu 20.10 nvidia-driver-460 No Compatible GPUs found for path tracing [duplicate]

I'm running Ubuntu 20.10 with nvidia-driver-460 installed and a GTX 1060 yet Blender 2.8 says "No compatible GPUs found for path tracing" What else do I need to do?
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Surface not casting any reflections Cycles

When I go into render preview, the materials from the car are not reflecting anything and are only very dark, although they should. When going into the material preview everything seems to be okay. I ...
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Fluid is hanging over the ground - problem [closed]

Water simulation hangs over the surface of the collision object I am writing this again in a new account. Can someone help me? Here it is my project. You can download it and find a solution to my ...
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normal map bakeing issue

my issue is regarding baking normals every time I try to bake normal I don't know why a normal map couldn't bake properly I share my normal map setting please describe why iam facing this problem
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1answer
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Material glitches in my renders [duplicate]

Does anyone know what might be causing this to happen with my renders? It's like part of the material doesn't want to show but I'm using a very basic setup. It looks even worse with cycles: My rock ...
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How to render both render layer and movie clip background properly?

The image shows the only change made between the two renders that causes the issue. I go to Cycles Render to go to Film and click transparent to render the background as I was told in a different ...
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My render result is very different from my render preview [duplicate]

My render result is very different from my render preview. Does anyone know what I'm doing wrong?
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Problems with material preview, wireframe and rendered modes [duplicate]

Viewport shading (material preview) is not working, and Viewport shading (wireframe) works only in edit mode, in object mode does not work, but should work in both. Viewport shading (rendered) also ...
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Why do the particles in my fluid sim move to the left with no added velocity?

I was setting up a fluid sim and noticed that even with no added velocity or anything like that changed the particles fly to the left. Why is that and how can I fix it? The effectors don't seem to ...
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Can anyone help me understand what causes this error ? OPTIX_ERROR_INVALID_VALUE in optixAccelComputeMemoryUsage

I m trying to do a rendering with optix on. I just recently upgraded from 2060 to a 3090. I had the exact same error with the 2060 but i thought it was because of vram limiation as the scene that i ...
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Low roughness shows weird outlines in cycles

So basically, I am making a model with about 0.3 roughness. I noticed though when rendering, that this weird pyramid thing appeared I played with the values and discovered the only way to make it ...
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1answer
25 views

Render time stuck on “synchronizing object” with extreme memory usage spike

I am using Blender 2.91 with Windows 10. I am using the Cycles Rendering Engine on my GPU which is an RTX 2070. I have a project that I'm working on that takes an incredibly long time to render. I am ...
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1answer
29 views

Render using way too much memory no matter how much I lower settings

I am trying to get my render time much lower. It's taking about 10 minutes a frame. which is obviously way too long considering that I need to do over 800 frames maybe even over 1200 by the time the ...
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1answer
877 views

Realistic Light Reflection

i have an object that im trying to recreate in blender. its a bookmark with lights in it and im trying to get it to have the correct light bounces Im trying to get it to look like this, where the ...
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23 views

White Noise after Rendered Scene

When I render, white like bricks come up in my scene and start to affect the sand textures. I've researched I thought it was a noise particle from using something transparent like water but the noise ...
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What's a new but cost-efficient NVidia I can get to support Cycles GPU compute? [duplicate]

I am buying a new computer, and I want to get a decent NVidia GPU for Cycles compute, but I can't tell what NVidia is new and what is not. I don't know my NVidia GPU history that well, so I am really ...
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Preview Bake Process in Cycles Like During Rendering

I wonder if there is a way to preview a baked texture during the process as we can see the progress of each sample when simply rendering a scene in the rendered viewport. Often the first results of ...
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Seeing odd texture artifacts while rendering on a EC2 machine with GPUs

To save time, I set up an EC2 machine running Ubuntu with a Tesla K80 GPUs to render a scene saved in a blend file. I rendered in the background using this command: ...
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When I go to render my animation, I get a glitched square group of pixels

Im thinking the glass material is causing these artifacts but I'm not sure and I don't know where to begin to fix. Please assist. I've provided a link to my blend file. Also a note, It looks great ...
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1answer
36 views

How can I create a wire-wove grid material in cycles?

I'm trying to create a procedural cycles material which looks like a speaker of a mobile phone. My attempt is by mixing two Wave Textures and rotating them by 45°. Any hints on how I can make it look ...
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Final render of an explosion looks different from my preview render

I've been trying to render an explosion in cycles and it comes out looking completely different, here are some pictures of the explosions and render settings. Let me know if anything else is needed. I ...
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Improve texture rendering [duplicate]

I cannot understand why my rendering looks so fake. Can you give me your advices ? Here it is nodes shader : EDIT : I would like to get this object modeled
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1answer
25 views

Normal Map Works in Eevee But Not in Cycles?

I'm working through the Blender Guru's donut tutorial and I'm at the point I want to apply a normal map to the wall. I've tried to duplicate every step in the tutorial but the texture does not render ...
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1answer
59 views

How to create ship painted metal panels material?

Can someone tell me how i can get similar bumps on a surface as the images below So far i have just unwrapped the hull and used the following material with a musgrave texture. The model can be ...
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Clear Material Showing up black (cycles) [closed]

I'm trying to make this glass, and I want it clear. However, in the render view it keeps showing up as a shiny black shade, instead of clear.
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dont see material propeties when i have render engine selected to Cycles

Hi everyone I have a question, I just started using blender and I'm watching a video of making a donut to learn the basics, on the video they recommend changing the render engine type to cycles and I ...

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