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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Rendering with a different texture filename using texture node without manually changing filename each time

Rendering with a different texture filename using the texture node without manually changing the filename each time. I have several different texture files that i want to render out using the same ...
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Mix Shader when shadow [duplicate]

I want to mix shader when object receives shadow with Light Path node but it isn't working.
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can i keyframe the position of an image texture node on the surface of a model?

im trying to be able to keyframe eyes on a model but the eyes are image textures on a surface. moving the surface that theyre on dosent work. i just need a way to move the eyes (images) on the surface....
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Colors smear into a puddle in render

I'm very new to blender and I'm making my first kitchen scene. When I'm trying to render the scene I have stumbled upon something weird. On both the cabinet drawers and doors the colors seems to smear ...
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1answer
55 views

Why does my fire + smoke simulation look chunky?

I am following this particle explosion tutorial https://youtu.be/29yfS-icS3M and for some reason instead of looking nice and billowy and realistic, it looks like a bunch of floating chunks. My theory ...
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How to prevent Toon BSDF node from casting shadows on enlightened areas?

I know toon shading can be done with eevee too, but it have issues with casting shadows without some “holes” inside them or jaggered edges. Cycles does better job from my POV. But, there’s this issue. ...
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Smoke/Fire cards or simulations

HI I'm trying to create a really high quality cinematic in blender, In my animation there will be a bunch of boats on fire or smoking, (mostly) in the distance, How should I achieve a high quality ...
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How to properly apply an image sequence texture to an imported alembic file?

I've imported an alembic file of a fluid simulation from Houdini and am trying to apply a sequence of image textures (displacement maps that I have also exported from Houdini for the ocean spectrum, ...
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Stoll no solution for noisy volume in cycles?

I've created volumetric clouds and tried to get them to have no or at lest usable noise, NO WAY!!! I tried everything for 2 straight days now and I#m about to go up the walls.... I tried follow ...
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Ocean looks real close, but plasticy and undetailed when far. Can't find setting for this

I re-asked this question and added all necessary files and images, so its more clear what my problem is: now u can download the textures and blend file and render and see what i'm talking about :) I ...
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Randomizing Particle Behavior

I followed this tutorial to create lightning bolts. It gives me some parameters (bolt opacity, bolt length) that I'm manipulating with keyframes: it shoots down in 1/10th of a second, then fades to ...
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How to correctly cut holes with subsurf modifer [duplicate]

I am currently stuck, because I want to cut a series of holes into a mesh I have but I just can't figure out how to do it. Using the boolean modifer only messes up the topology, and I was trying to ...
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creating convex lens but focal length is not accurate [closed]

I made the biconvex lens with the following parameters: focal length=30 mm R1=30.4 mm R2=-30.4 mm lens diameter=19.1 mm center thickness=3.1 mm environment IOR=1 lens IOR=1.515 I set up a 2f optical ...
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Volume Scatter - how to increase falloff

Here is my node setup. And here is what the volume scatter looks like. It is mostly fine but where the edges of the mesh is seen there are very harsh lines where the volume ends. Does anyone know ...
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Can't fix UV glitch

I was sure that this glitch was a toplogy problem, but I deleted the face and re-filled the edges together, but still cannot seem to get rid of this glitch. It looks like there is a distinct line in ...
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Unclear polygons when rendering

I am learning to work in a blender. Finishing the next project on the render, I noticed these polygons. I tried to add thick, it didn't help. This problem manifests itself only when I run the render (...
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26 views

Can't see hidden objects-possibly glitching mesh?

I have tried moving all unncesarcy objects into a new collection so that it is only the iPhone mesh and cameras/etc. For some reason this is what I see in my viewport: But this is what I see in the ...
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1answer
36 views

How to make objects inside objects block Subsurface Scattering

As we all know inside the human skin the bones, veins and other denser fluids absorb the light more than the soft parts. I want to create the same effect without using textures since they are in a 2D ...
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UV map in cycles is different to eevee or textured view + apparently only one UV

I bought a 3d model off an online store and I want to render it in cycles. In eevee and textured view its great, but as soon as I switch to cycles the UV completely changes and is all sorts of messed ...
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51 views

Cycles fog not working when rendered

I have tried following a few tutorials to get fog using nodes when rendering with cycles but they all turn out with the same result. This is a screenshot of the node setup for the fog. When I go to ...
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2answers
48 views

Auto Update Render Window on motion blur properties change?

Is it possible to have the render view update automatically instead of pressing manually F12 every time as I change motion blur effect properties? This is concerning Render view only and has nothing ...
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1answer
22 views

Model deforming clipping and falling through clothing

I started trying to do a walk animation, and I added some clothes to the character. But, for some reason, the player falls through the clothing. I'm admittedly very new to cloth physics, and animation ...
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cycles render view port is red with opencl [duplicate]

so for the past few days ive been trying to get cycles render to work with OPENGL but every time I try my pc BSoD. but today i found that it kinda works with blender 2.81 but one problem its all red ...
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Weird gaps in mesh ONLY in Cycles [duplicate]

I'm making a render of a weapon in Cycles, but in certain parts of the mesh, the model seems to be falling apart with little gaps around the edges. Here is a photo of my render in Eevee, and looks ...
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34 views

Saving a image using bpy.ops.image.save()

I need help in saving a color pass image of a recent rendered image. First I need to render the image using - bpy.ops.render.render(write_still=True) then I need to add soem filters in the final ...
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46 views

normal map exported from Blender

Hello i'm trying to export normal maps from Blender to my own application.Below in the 1st pic you will see how the normal mapped model looks like in Blender Cycles Render mode and the 2nd model is ...
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Blender OpenCL uses all of my RAM, and my VRAM, and makes my computer crash

I have this weird thing with OpenCL/Cycles, it uses 5 GB of my ram + half my VRAM (4 gb) and the scene i am rendering isnt even complex, it is just a rigid body simulation. How do i fix this or why is ...
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1answer
42 views

How to slow down the flames with simulation?

I want to slow down the speed of flames. I am trying to create smaller flames but slower. Which simulation settings do I need to dial? I tried smaller simulation time steps but that made it worsts, I ...
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1answer
24 views

Layout view shaded with blue and red tint

I was working on my model, and decided to switch to cycles. Everything was working fine and then suddenly the viewport started giving everything a blue and red tint to it. Depending on whether I ...
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Object Not Showing Up in Material View, Glitchy in Eevee, Perfect in Cycles

I'm kind of new to blender, and lately everything I do doesn't show up in material view, glitches out in Eevee, and works perfectly in cycles. I'm trying to figure out why this might be happening. I ...
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84 views

Transmission and Specular in cycles

In the reference manual, the specular value (Principled BSDF) should be ((IOR-1)/(IOR+1))^2/0.08. I want to make a glass with Cycles. So, I am using a transmission value of 1 and an IOR of 1.45. I ...
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How to affect light strength through a transmissive object in cycles render?

Question in Depth I am trying to make a transmissive material that, when light passes through, the strength/intensity of the light is modified in some manner. The question is targeting the ability to ...
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Import render settings from another .blend file [duplicate]

Is it possible to import render settings (e.g. how many times the light paths bounce for Cycles) from another .blend file? There are too many of them and I don't want to check and copy each one ...
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some steps doesnt work from eevee to cycles blender 2.9

hello i just try follow some tutorial in youtube and i forget to change the render engine from eevee to cycles, but when i change the card little bit different the masking is not transparent anymore ...
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1answer
22 views

When I go to the Shading tab it's empty but shows in Layout?

I'm trying to do texturing for my objects but when I go to the Shading tab it's just completely empty but in the Layout tab everything shows just fine. Already tried restarting Blender multiple times. ...
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1answer
38 views

Cycles Rendering "Explodes" Model

I am sure someone out there has experienced this issue, but without knowing exactly how to describe what is happening I wasn't entirely sure how to search it. Basically, everything looks great using ...
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1answer
35 views

Black spots appear at end of render time

Disclaimer: I looked at similar queries regarding black spots. None of which addressed the issue I am currently having. As shown in the images, black smudges and lines appear in a variety of areas. I ...
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Turbosquid model Vray SSS shader to Cycles

I have a problem of bought Turbosquid female character which was build with 3Ds max and Vray translating to Blender Cycles shaders. The main problem is with diffuse and Subsurface scattering. Vray SSS ...
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1answer
28 views

Point in the mesh messing up the shader (Cycles)

I have been working on this project of mine for a while now and I noticed this part of the mesh not rendering correctly on Cycles. I thought it was a flipped normal at first but that wasnt the case. I ...
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1answer
76 views

Weird circle looking like coffee stain on windows

I'm making my first project and realised I got a weird circle on the glass on my windows looking like a coffee stain or something (the circle only appears on the windows). I don't know when it ...
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1answer
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why does my glass look so strange especially when smooth shaded

Here's what it looks like flat shaded, in cycles, with the settings. i only upped transmission to 1 and roughness down: Here's what it looks like smooth shaded in cycles:
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Transparent material creating unwanted shadows on mesh behind

Material for the eyelid mesh is a simple transparent node into material surface output. mesh uses a subdivision and shrinkwrap modifier in that order. It also only shows up in cycles render but not ...
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1answer
87 views

Displacement map from substance painter looks WAY different

I've drawn this line that affects how the normal/height textures look on substance painter: However, when I import all of this into Blender using the node wrangle, it looks like this: It doesn't ...
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1answer
47 views

Why does a white glossy sphere take much longer to render as same sphere in black?

Assembly yourself a simple scene like this one. That's a 4K texture in the background. 14.92 seconds for black 24.73 seconds for white
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Disaster Render Artefacts

Hope to find help here. I am working on a project, and didn't touched the file for a while. Now starting again i started rendering a test image and those horrible artefacts occure over the render ...
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0answers
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Why my domain is rendering just like a box in preview? [duplicate]

Even when I setup the simulation using 'quick smoke' I always get just a box in the viewport: I tried to re-install and reset the settings and tried to use many different volume materials. In many ...
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1answer
34 views

Why does GPU rendering of glass look so wrong compared to CPU? Cycles

Why does the GPU (bottom) rendering look so much worse with weird light bands at the bottom, compared to CPU (top) rendering. Is this a driver issue with the GPU?
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System out of GPU memory

Since I got my new GPU this error comes up from time to time when rendering a small (100 frame) animation. At the top of the renderview (F12) it says "System out of GPU memory". When I ...
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2answers
121 views

How to create Thick Semi Transparent plastic?

I would like to create semi transparent plastic material in cycles like this reference picture. This is my current node setup. And this is the result i am getting. Ignore the background. and when ...
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33 views

Object in cycles render doesn’t render properly

Everything else in the project is rendering perfectly fine other than the bolt on the right. In the 3D viewport it seems to be rendering perfectly fine but when I do the final render it out it doesn’t ...

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