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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Why does Blender crash when ever I add a Venetian Blind (Archimesh) and then change the parameters

Why does Blender crash whenever I add a Venetian Blind and then change the parameters of it? I made sure my units were not in imperial but Blender still crashed. Does anyone know the reason behind ...
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How to generate realistic shadows on a shadowcatcher of a single object at a low elevation angle?

I've been working on a Blender model (using Blender 2.79, but I've also tested in 2.91.2 and got the same result) with the goal of producing a realistic shadow image for an airplane from any angle. I'...
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Is it possible to render part of the composition in eevee and other part in cycles?

guys! I want to render this scene (in a video, rotating the camera around the head and the word) but I made the word following a eevee tutorial and the other parts work better in cycles. Is there a ...
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MacBook Pro 2018 - No render devices for OpenCL (2.91.2)?

I am using a 2018 Macbook Pro and I cannot find hwo to setup OpenCL to accelerate my renders. Is there any way to make that work?
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Grease Pencil on Mesh won't Render

first of I would just like it to be known that I am really new to Blender so my problem might actually be a simple one to solve. I have a mesh that I made and I used the grease pencil to do some ...
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21 views

Cycles render appears not to render on GPU

Lately I bought a Radeon GPU to speed up my rendering proces, but I didn't notice a significand decrease in rendering time. I checken my processes and my GPU only used about 2% of its capacity, while ...
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Need help with lighting the scene

I'm a beginner to Blender and as my first Non-tutorial model, i tried making a Wine Bottle & a Wine Glass. Well, the modelling went fine but the lighting part is still troubling me. Can someone ...
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object leaves dark parts after animating diffuse to transparent material

i have an object that starts out with a diffuse shader and then changes to transparent(I animated the mix shader to do it). However when it goes transparent theres dark bits leftover like theyre from ...
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37 views

How to hide the alpha of image planes? (Images as Particles)

I'm at the point where I need to add node materials to my leaf branches to make the colors diverse and react well to the lighting. However, whenever I add the mix shader nodes, the blank transparency ...
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Cycles left some squares in final render

does anybody know why I get this final render in CUDA Cycles. I get this results when I try to render with CPU and GPU together, like they have set different number of samples or CPU try to catch up ...
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Freestyle line thickness based on lighting?

Is it possible to have a freestyle line render thin where the underlying geometry gets a lot of direct light and thick where it's not getting any direct light? I'm using a single light source in the ...
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Blender viscosity simulation resetting domain [closed]

I made a render of honey using the viscosity https://imgur.com/4FEGjMx This is the render I did earlier of it and now it has messed up.
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Strange results when using the Cycles renderer

Using Blender 2.91.2 I have a 'simple' two object model of a plastic go-cart wheel - an inner wheel and an outer 'tyre'. I have two different procedural shaders to simulate scuff marks on the wheel. ...
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Is it possible to render hair in Cycles, other parts in Eevee, and then do compositing?

I try to render eyes and hair in Cycles then render face and the rest of the scene like room and light source in Eevee. After that, I try to use the compositor to connect the two render layers in mix ...
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I learned basics of 3d modeling but not sculpting. What should be my next step? [closed]

My main aim for learning blender was for rendering and then animation. I learned basics of 3d modeling but not sculpting. What should be my next step? If I want to focus on learning rendering only, ...
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CUDA crash on Blender Cycles

When ever I try to render my animation it crashes after 30-50 frames. Its a fairly simple scene, there are 642,026 triangles. I have intel i7 and a GTX 1650. The materials or the lighting are not ...
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Blender is rendering white in Cycles Reder

I'm actually using Blender 2.79 on a Raspberry Pi 4 Model B and I tried rendering in Cycles Render my scene but it renders a complete white image, however, in Blender Render, it gives me my scene with ...
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107 views

How to create a raw white rice material?

I'm looking for a very realistic material for rice. I've tried just turning up the subsurf, transmission with various IOR settings, messed around with mixing translucent shaders, tried using layer ...
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1answer
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Is it possible to combine 2 or more textures VIA - BelnderKit add-on

I am trying to make a grassy landscape with a dirt path through it using two different textures found through the BlenderKit add-on. [It's an add-on that lets you search and quickly import assets, ...
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AMD ProRender 3.0.8 crashing on final render - 2.91.2 [closed]

I am trying to use a Radeon RX570 in a Razor Core EGPU on a Mac. I was having constant crashing issues with it both in viewport and rendering. I have found a solution for the viewport problem by ...
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1answer
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Some Particle Systems glitching for unknown reason only in render

I recently created an animation with 4 particle systems and some force fields. It starts out correctly, but at ~frame 60 one of the particle systems starts glitching like this: Frame 65 Frame 66 ...
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Rendering problem, weird distortion on blender 2.91

when rendering this i face strange issues on some frames like 5 o 6 of 281, they are specific frames, only happens when rendering final image, but in viewport rendering mode it looks good
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How do you remove the line in the noise texture?

I have a line in my noise texture when I render it, it's really visible. I'm using Cycles, with a spherified, subdivided, cube. I also let it smart UV unwrap, but the gap was still there. blend file
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Artifacts on border of PNG in render

I am trying to fix an issue that only appears in my renders. I am using the latest version of blender 1.92. In the image below I have highlighted the sections where the issue appears. It seems to be ...
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Hair Particle Removing System

Hi I was watching this tutotrial https://www.youtube.com/watch?v=SzbuZTlMGPE&t=339s and wanted to make something simiallr. However this only works for parctiles that are emitted and not the hair ...
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Is there a way to make a hair particle look like a mesh I've already made?

So I have my character, and her hair is already an object mesh (modelled and sculpted), but now I want to add realistic hair to it. I tried using a hair particle system, but I'm finding out that you ...
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Blender hair in viewport looks nice and in render deformed

Essentially that's it, I have styled the hair and everything and my viewport is set to display the same amount of hair as in the render, so I was expecting the same shape as in the render, but when I ...
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Display Cycles tile mapping onto camera view

Sometimes I'd like to set/adjust my Render Region to be rendered in as few tiles as possible. It would be nice to see where these tiles would be in my camera view as I start to draw the RR. Is there ...
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Cycles Rendering in UI not working - Command Line is fine

I am having an issue with Blender 2.91.x and above, where I can very rarely get cycles rendering to work in UI mode - ie by hitting f11 or f12. I get the occasional render but it certainly cannot ...
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Nvidia 3090 - Cycles Rendering - Crashes

I have recently bought a 3090 to use for rendering purposes in blender and I have been encountering ALOT of crashes even when rendering a relative small scene. I have used both CUDA and Optix options ...
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Weird intersecting mesh on final render (w/ Boolean modifier)

I'm using a Boolean modifier set to Exact (Blender 2.91.0) to create a rather simple shape to merge a disk and and another half disk (see attached), and while it all looks fine in the render preview, ...
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Switching from eevee to cycles messes up lighting completely

This is how my render preview looks in eevee: However, if I switch to cycles, this happens: I've been following a tutorial to get to this point, and I'm really a beginner, any of you have an idea of ...
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How long should the Blender BMW demo file take to render? [closed]

This is a different question. But I didn’t know where else I should have asked. I tried rendering the Blender BMW demo file (in cycles, with GPU) and the render took 37 minutes and 48 seconds. The i ...
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Is it possible to read and write to a texture using OSL?

Is it possible to read and write to a texture using OSL? I'd like to recreate this implementation of Conway's game of life using Blender OSL shader scripts. This was done using WebGL [HERE]. The key ...
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Dark tris and quads in random places when rendered with Cycles in Blender

I made a Mage's hat in Blender following the tutorial ( https://youtu.be/FTlvbVy8Hc8 ).I have finished the modelling and shading part but when i rendered it i got lots of dark triangles and quads on ...
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Info Node Eevee Integration [closed]

I am currently working on an integration for a length socket in the Hair Info node and got it working in cycles allready, but am currently struggling to find out where in the code the shader values ...
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How do you render a shadow pass from a shadow catcher in cycles?

I have an object (an apple). I've covered it in water droplets using hair particles (from a second hidden emitter). I only want to render out the droplets and their shadows. I've set the apple to be a ...
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Render Passes File Output in Headless Mode

Here is the blender manual on command line rendering: https://docs.blender.org/manual/en/latest/advanced/command_line/render.html I am having an issue in blender where blender hangs on rendering in UI ...
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1answer
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Problem rendering additional scenes

I'm relatively new to blender since Dec 2020. Using Blender 2.91 I'm currently working on an animation , which I’ve split over 5 scenes. I made a new scene each time by making a Full Copy of the ...
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Lighting inside transparent material is not working ideally. (Cycles, Ray Visibility Uncheck shadow not working)

I am creating a house exterior and setting lighting from inside the house. However, the point light through the glass (transmission = 1.0) looks like a ball along with its radius. Could you please ...
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Rendering messes up my image but its correct in viewport. please help

I was wondering if anyone could help me with a problem I have when rendering in blender. So my Viewport looks like But when I render it looks like If you could please give me some advice on how to ...
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How do I make wine bottle reflections blue?

In my photographic work I've often desaturated the blue tint that appears in the highlights on red wine bottles but now creating them in Blender I'm finding the subtle tint adds a great level of ...
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Cycles rendering circles with strange feathering

Circles and other round objects are coming out with strange indentations on the upper most parts, and protrusions on the bottom. Everything in the project is the default blender project, except the ...
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Mesh shows up as wire frame in solid view

I noticed that one of my meshes shows up as a wireframe even in solid view. Is there any way to fix this without having to remake the object? It renders it as a solid. .blend file
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1answer
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Why isn't the Image Editor showing the denoising image like in the Compositor?

I am fiddling with denoising a set of images but the image in the Image Editor is not denoised as in the Composition Tab. Is there something that I am missing to do? I have already tried detaching and ...
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How do I denoise an image sequence that has already been rendered?

I have completed Andrew's donut tutorial and I have a full set of 30 frames that makes up the image sequence. I opened another Blender tab (closing down the tutorial with saving) to compile the frames ...
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My glass becomes opaque on the bottom

I made a wine bottle for a client and when it's turning it becomes opaque at the bottom, really strange and I do not understand why. Do you have any idea ?
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1answer
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Rendering in cycles distorts material

I now know that the problem I had with render mode was because I rendered in Cycles but I think I have to keep working with Cycles for this one so maybe someone can tell me, why the material looks ...
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Tips for rendering faster in CPU [duplicate]

I know there are a lot of websites there which are answering this, but as I was making video which is only 1.3 seconds long, it took 2.5 hours to render, also with all the tips I found. I am using CPU ...
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1answer
103 views

blender 2.91.2 bevel node doesn't work properly

bevel node doesn't work properly in rendered mode with cycles, it darken the edges rather than soften it