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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Cycles not adding mist pass on random frames in an animation?

I added a mist pass to a somewhat complex Blender scene yesterday. The compositing configuration is set up exactly like Quacksilber's reply here: How do I use 'mist' with Cycles?, and I am ...
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21 views

View Z depth vs depth in preview

My rendered view z depth does not match the depth in the viewport and I'm wondering why / if there is an explanation for this. I've a super-simple scene: Just, a camera looking at a flat plane, ...
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GPU Rendering for Cycles on Mac Pro (2013) with Blender 2.82 [duplicate]

Im new to Blender and and not strong on the hardware/compatibility side of things. The Mac Pro (late 2013) I'm running came with dual AMD FirePro D700 GPUs as standard, however in Blender 2.82 it ...
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Why do animations taker longer? (Animation Renders vs Single Image)

I am rendering a BUNCH of product images. Same shape different texture. I have my material set up in nodes to sequence through image textures each frame. Render quality is 512 (no I can't set it lower ...
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Cycles and EEVEE strange polygon problems

to the point: Why are polygons visible when rendering on cycles (Attention to the wheel), but not on eevee? hdri is same on both renders. The wheel has a smooth shade. In solid mode, everything is ...
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cycles combined bake coming out black

hi so i'm creating a high gloss golden earring with a pearl detail, but both textures are coming out black in baking (the object is merged because the programme i plan on uploading to can only have ...
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534 views

Glass: Increase “Transmission Roughness” as the object behind goes far

In the real world, there are some rough glasses that as objects behind them go away, they (the objects) become more blurry, but when we stick an object just behind this type of glass, it's almost ...
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Does “AO” in World Settings apply the GI Effect too (Cycles)?

When I check the Ambient Occlusion checkbox in the World Settings, the scene becomes brighter, but it also applies the AO effect. So this is the question: Does this option, apply both AO and GI to ...
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32 views

Render is Blank (Empty)

I'm working on this donut for my first time on Blender, and I opened a vertical split. But I can't see the original object or image. Also when I try to render the image, it says "Launch failed". Here ...
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10 views

Speedup rendering of alpha-masked areas

When samplecount is pretty high (>1000), masking areas with Holdout shader is a bit time consuming for rendering. For example empty screen renders in 25 sec with 1000 samples, while with 1 sample just ...
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Animation Nodes Image stack to volume Blender 2.82/3

Is it possible to stack a sequence of images as a texture for a volume shader similar to what can be done in Houdini Convert Slice images to Volume There is an example of what has been done in Blender ...
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24 views

Rendering as an image makes Blender re-render three times

My Blender file has started to render a scene three times. After the render is fully complete, Blender is rendering the same frame, same scene 2 more times. What is causing this? I am rendering in ...
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Looking for help streamlining an OSL node

So yesterday here on stack exchange, I stumbled across a solution to something I've been trying to figure out for a while now, a rough way of calculating volume depth: Distance from the surface as an ...
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Blender 2.82 particle motion blur

So I'm working on a fluid simulation with the new blender 2.82 features(cycles), where I have foam, spray, and bubbles enabled. All is well and it renders properly until I enable motion blur, which ...
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1answer
54 views

Plastic Cup is making shadows inside of itself that cannot be removed

I want to make a plastic cup. I made it transparent, almost glassy, by using a Principled shader. I want the shadows that are trapped inside of it to be gone, but moving the light will not work and I ...
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Motion Blur not working on all objects

Motion blur is working only in the moving object of image 1 but it's not working for the object from the second image? I'm stuck I don't know why is this happening? Both belong to the same scene.
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40 views

How to create a superior mirage in blender

I'd like to create a Superior Mirage. Where by looking at object A, i can see object B, which is hidden behind it, as a reflection above A. What Wikipedia says about it. Other images from Google. Q: ...
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Is there a limit to objects included in a rigid body constraint?

I have an empty that is connecting multiple objects, with wheels that turn, and I need more than two object options to make the rigid body move the way I want. It's basically a car that hits a wall ...
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36 views

Why will Blender render the transparent area with shadow catcher on? [duplicate]

One thing that puzzled me a lot is when I add shadow catcher to the ground floor, and render it, Blender will treat that transparent area as opaque one and render it as well, this causes extra render ...
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MacBook Pro not recognising Blackmagic eGPU for Blender

I have just upgraded to a new MacBook Pro with an external Blackmagic GPU with an AMD Pro Radeon 580 card, to use specifically to render in cycles for Blender 2.81 (I am too long in the Mac tooth to ...
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Black squares showing up in render

I’m following a tutorial right now and I have a problem with my final renders. I’m using open cl with my AMD RX 5700 XT and AMD RYZEN 7 3700X since it faster, but the problem that I found out that is ...
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Why is my Cycles scene so bright even with no lights?

Apparently cycles has some kind of built insane glow that causes everything to be brightly lit in a scene even with no lights at all and all light sources removed. How do I turn this insanity off? I ...
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Object is greyed in viewport shadow

So my cube or objects is greyed in viewport shadow like this below the scenes settings is cycles and gpu compute anyone know how to fix this? i'm new to blender, i just followed tutorial from ...
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Render time triples after updating to 2.82 from 2.81

I just re-rendered a project I'm working on after updating to 2.82 from 2.81 and my render time looks to have tripled after the update. I checked my render settings in the project as well as the ...
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37 views

Any tips on modeling this mushroom?

I'm not quite sure the approach for this and would be grateful for any tips. Using cycles in 2.81
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Viewport render freezing, Task Manager won't quit Blender

Blender randomly freezes when I move the camera in viewport render mode (Cycles). Viewport turns grey and even Task Manager -> End Task cannot close Blender after this happens. To close Blender, I ...
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750 views

Why can't I use “GeForce 9500 GT” for GPU rendering with Cycles?

So I have an "NVIDIA GeForce 9500 GT" GPU and I have installed CUDA so the viewport of the blender is working with this GPU, but when I try to use it for GPU Computing (GPU Rendering with Cycles), ...
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Why is the Particle Info Node not compatible with Eevee?

I have used the particle info node successfully with Cycles renderer. What is the technical or semi technical explanation as to why the particle info node is not working with Eevee at the current ...
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Bake through alpha

Here already asked few time similar questions but no one contain answer with solution(and all of them been asked few years ago). Right now I have to work with foliage and need to bake some things. ...
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1answer
17 views

Best Render Settings to Eliminate Image Grain?

First things first, I'm basically brand new to Blender. I used it years ago to do nothing more than import Minecraft models, pose them, and take photos. Well, now I'm doing basically the same thing ...
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32 views

Cycles, get object passes through glass

How can I get any render passes of the monkey object which is placed into glass sphere. pic.1 - combined view pic.2 - IndexObj pic.3 - IndexMA pic.4 - AOV Output - color pic.5 - AOV Output - ...
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Best Render Farms to use for Blender? [closed]

Can anyone give me some advice on what are the best Render Farms for Blender using cycles? We are a small studio doing short motion animations. RenderStreet and BlenderGrid look like good contenders. ...
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Blender Particle Simulation Render Misstake

I´m doing a cycles particle animation with explode modifier. The animation is 200 frames. After several tries of rendering I always get the same problem: Almost all frames are rendered correct, but ...
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Not rendering the background

I've seen people rendering single objects in Cycles without rendering the background I know about the transparent option and I've enabled it, problem is that Cycles still spends a good amount of time ...
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cardboard flute - cardboard thickness

I need to prepare a textured simple, plane of cardboard, made of a simple mesh plane but using only, for example, solidify and subdivision modifiers. The thickness I've made as a second material on ...
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Cycles render not working in viewport render

After the 2.82 update, Cycles render isn't working in viewport and render tab. In viewport, it looks all white and flickers grey when I move my mouse, in rendering tab, it's always blank but when I ...
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Why is my material appearing white instead of the colour of the texture?

I'm new to blender, making a wood material with a bump experimenting a little bit using the principle shader. My wood appear white instead of the real color. What am I missing here?
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Emission shader not working with OpenCL

When I try to render with CPU, the scene looks fine and my emission shaders work as expected. When I switch to GPU rendering, the emissions stop working. I really have no idea what might be causing ...
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How would I model a paper straw wrapper and make it grow?

I am trying to make an animation that replicates this: https://www.abc.net.au/science/articles/2010/12/15/3093920.htm Dropping water onto a paper straw so it grows. I know how to make the water ...
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Scaling textures across different objects [duplicate]

Is there a way to keep the checker texture the same size? Currently it scales with the size of the object, even though the scale in the Cycles node itself is set to 5, a value of 5 looks different ...
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Does Blender 2.82 allow for Radeon VII GPU rendering?

I have a Radeon VII GPU but it doesn't show up in Blender. I am on Ubuntu 18.04. I have opencl installed so I am not sure why this is happening.
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GPu Usage on RTX 2080 TI 20% CPU 10% during Render Optix

I'm really new to Blender. I have a workstation with a Intel i9 9900X and a RTX 2080 Ti and 64 GB of RAM. I'm rendering a animation in Cycles(Optix - Denoising AI). The strange thing is that the ...
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How can I model this Body in Blender?

Hello Blender Community, I am new to Blender. In the past, I only used CAD Programs (Inventor, Fusion 360). Because of the Rendering and Animation, I try to recreate my models in Blender. One of my ...
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Blender 2.82, two GPU but only one render in Cycle

I'm not sure is this should be like that but, I have two GTX 970 graphic cards...and when I try to render something in cycles, I've notice that only one GPU works about 30-40 % and second one stays on ...
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Prinscipled shader's SSS Radius: getting rid of blue patch on thin parts

I'm working on a skin material in a project, and there's one little trouble I am struggling with, here's the issue: Sees those awful blue colors all over the material? I'm trying to get rid of them ...
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1answer
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Materials show up in material preview but not in render preview

I creating a project in cycles, but I am having trouble with the materials. The materials show up fine in the material preview, but when I switch to render preview, some materials turn pink. How do I ...
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30 views

Rendering crash with new gpu (rtx 2070 super)

So I changed my graphics card from gtx 1060 6gb to rtx 2070 8gb super. I have the exactly same scene and options. I'm start rendering and after 30min or sometimes less blender randomly close itself ...
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Toon Shading Light Direction

I am making a node setup in Cycles stylized after the toon shading in Legend of Zelda: Wind Waker, and I have two questions. Using the "normal" node, how can I have the first normal input (the first ...
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32 views

Camera Perspective in Layout mode broken - Blender 2.81

I am following the trusty old donut tutorial by Blender Guru, and I have run into an issue. I am up to part 6, first render. The camera perspective in layout mode does not represent the render output....
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How to write custom volume attributes using python?

I was wondering how I could write a custom attribute just like density and flame using python. My intention is to use it for volume rendering so if there's a strict data structure I have to follow it'...

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