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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How do I match old-style (Blender Internal) specular hardness with new-style (Cycles) Principled BSDF Roughness?

I am trying to match the specularity size of an old Internal material (controlled by a Hardness value) and a new Cycles material (controlled by a Roughness value). As can be seen in the image, ...
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Is there a way to replicate this process of multiple blobs of paint being smeared over a surface?

I'm looking to recreate this effect in Blender and can't seem to find anything online about it. Effectively I would like to be able to control the size/shape of the paint blobs and the direction/...
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Point cloud visualizer

sorry for my english, i'm looking to render this point cloud scene, so i used point cloud visualizer and convert it into particles system. It works and i can create a scene with lights, volumetry... ...
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Render over-exposed once exported

When I render my image, the render looks normal when viewed in Blender. However, when I export the image as a PNG, the photo becomes over-exposed. I don't think the compositor has anything to do with ...
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Rendering in pixels

I have a problem with image and video quality after rendering. I found lots of people with this problem on the internet and tried all the solutions given but with no success. After exporting an ...
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Shadows are normal in cycles preview but turn into reflections when rendered out

Hi I have been following the blender 2.8 donut tutorial and I am currently at the stage where I need to render and texture it so I did a quick render to see how my donut looked but for some reason the ...
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Decals in cycles

Why do dark stripes appear on the borders of decals in cycles?
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Blender 3.30 Cycles X won't recognise AMD RX6600 GPU in linux

My old video card (nvidia 660ti) failed a couple of weeks ago and I replaced it with an AMD RX6600. The new card is working fine, Eevee and games are running much faster, but Blender doesn't recognise ...
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Strange light artifacts in final render but not in viewport [closed]

I have a strange issue that I cannot find what causes it. In a vfx scene (cycles), everything is cg except the actor. I have the actor in the scene using images as a plane but in the final render I ...
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Screen-space Normal pass with bump

I'm looking for a way of rendering Normal pass in Cycles that would be screen-space (camera/view space) and will include bump. Currently Cycles outputs Normal pass in world-space, it does include bump....
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Shader using DotProduct is creating stranger shadows

I am attempting to create a stylized moss shader. My strategy is to use a dotproduct as shown below to drive an alpha mask. In this example the mask material is applied to a sphere which is slightly ...
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strange noise in volumetric render

hi. Cycles, blender 3.3.0 I have bug in volumetric. in light path volum is 10. 4096 samples. In scene volum is cylinder. Noise on the left up side. I have denoisers - in render and in compositor.
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Blender 3.0.1 Cycles renders image fine (F12) for minutes but at 100% the whole image turns completely black, Eevee works fine

I have been unsing Blender for years but am no way an expert. Usually eveything works fine. But today I have the exact same symptoms as in Render turns black when finished, but the proposed solutions ...
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My characters pose changes in render

I have 4 characters and 2 of the characters change their pose in the render (Cycles and Eevee). Here is the blender file (google drive)
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How to write a code through which I can remove the image textures attached to Alpha of Principled BSDF of all materials?

When I import models from online, they come with an Alpha map which makes the whole object translucent looking and when I remove the image textures attached to Alpha map of all materials, it fixes the ...
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How to write a code to change color space of all image textures attached to Base Color of Principled BSDF of all materials?

I want to write a code to change color space of all image textures attached to Base Color of Principled BSDF of all materials
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Render mantaflow as particles, not mesh

How can I render Mantaflow (fluid) as particles, not mesh? (Blender 3.2+) After rendering with Cycles engine, it should look something like the following (color based on speed, particles evenly spread,...
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Is there a way to change color space of all separate image texture nodes using python?

I have tried it earlier but I can only find a way to change the color space of a single image texture node using python so, I want to ask if there's a way to change it for separate image texture nodes?...
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Blender not rendering a specific object

It shows up in preview render and solid viewports but refuses to show in final render. I have check every setting I could find that was related to the object and final render as well as the camera ...
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Convert Blender Internal To Cycles/Eevee?

I'm wanting to re-render a project I made in Blender 2.79. It was made with Blender Internal, but since it's gone in newer versions, the project just doesn't look right in both Eevee nor Cycles. My ...
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Crash when initializing render [closed]

I was trying to render a scene and Blender keeps crashing every time I hit render. Always when it get to the initializing stage. Things I've tried so far: disabling Optix and enable CUDA only _ CPU ...
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Shading edges Node-setup not working

so I am trying to shade the edges of an object, by taking the dot product of Geometry-->normal and the bevel node. I am on cycles (CPU) on Blender 3.3. I already played around with the bevel radius ...
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Rendering an underwater scene - with depth fall off and surface caustics

I've been working on an underwater scene for a project and now reached a standstill due to an issue that I encountered. I'm trying to render a scene such as the ones in the images below, I tried using ...
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I'm having issues rendering my osm terrain with both Eevee and Cycles. The final render doesn't resemble the active camera view at all

I have a terrain on Blender that I'm trying to render. I don't know what I did wrong but it's not rendering properly in both Eevee and Cycles. The angle of the camera seems similar; however, the final ...
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Textures not exporting properly with Blender

I'm trying to export this scene to gltf, however the textures don't ever seem to export correctly. I understand that if this texture is generated by the Cycles engine, then it might not be exporting ...
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Why does my eevee and cycles render look different to others? [closed]

I am a total begnner to blender and so I am using the donut tutorial from blender guru, I am on part six and when I use the eevee or cycles render it looks compleatly different.
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problems with Cycles, totally empty image [duplicate]

I was trying to render an architectural model with Cycles, but the render appears empty.
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My Blender renders are shaky/jittery

My composition after I do a render are shaky or let me say jittery Here is my render Video file The video am trying to replicate was supposed to look like the one below Video file I used cycles to ...
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Problem applying alpha on my model face in cycles

I have a problem when applying a blood texture with alpha on my model face. There is blackness but my alpha is proper. Can anyone help me?
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Cycles renders material black in blender 3.3

I've used BlenderGis to import shapefile geometry. Rendered in Cycles, most of them appear black. The old Cycles render Blender 2.79b - Texture/Material being rendered solid black recommends to clear ...
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Hide mesh faces while maintaining collision

I am animating a character and using a cloth simulation for their clothing. Part of their body mesh will occasionally clip through the cloth, which I would typically solve by sculpting or hiding the ...
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Light Occlusion Mask?

I am trying to get a mask of Received Shadows, but without any Self Shadow or Shading. Using a Shadow Catcher mostly works, but not quite. Here is a simple setup of some spikes, a sun lamp, and a ...
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I’m trying to find out why ‘Rendered image’ is different than what I see in viewport

I like viewport image, looks like glass, but in rendered image looks like marble, low reflections, low colors and much more red color instead of green. How can I obtain redered image same as the image ...
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hair balding when i render it

first time try to make hair, i watch from tutor in youtube is kinda simple so i tried. when look in viewport is looks good for me but when i render. it looks balding viewport shading sample render ...
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Enabling GPU rendering on headless linux machine

I'm trying to enable GPU rendering on a headless linux machine. I'm using the following code: ...
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Blender crashes when finishing a render with cycles

when i try to render a scene with high resolution blender cannot finish the render (pc with r7 3700x 16gb ram and rtx 2070s), it crashes at the very last step of render wich is the "finishing&...
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What does the "E093 Multi-devices are not yet fully implemented" error mean?

I am rendering an animation on the command line, and after updating the lights it spits out the following: E0923 10:00:31.109567 20212 shader_eval.cpp:34] Multi-devices are not yet fully implemented, ...
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Why is this surface so weird?

This is a simple object with a coloring material. The image below has no material. I don't change any material parameters except the color. Why one of the faces look reflective? Source File
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Why are these dark patches on Cycles render?

Why are there dark patches on top of the tyres when i render in cycles? They are not there in EEVEE or the shading section.
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Using blender as image processor?

Imported image as plane, added a simple frame, now I would like to lighten it so that the colors and values of the render exactly match the original. That is, apart from the frame, the image looks ...
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Ship is not floating in Blender

I tried to make scene with floating container ship with this tutorial But whenever I use copy rotation the ship is behaving very weird. Can You help me? My Blend File is here
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Grey dots appear where edges are very close to each other on an AO bake

I've noticed these annoying texture baking artifacts that appear in areas where the edges from triangulated faces are very close to each other. This is just best explained by the images below. The ...
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Real Snow add-on has coloured snow in some areas

I'm creating a simple winter scene, using the real snow add-on to make realistic snow. However, when I render the scene, the top of the snow appears to have some weird RGB colour effect (less ...
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Very High Memory Usage When Baking Normal Map

I am trying to bake a normal map (Currently trying to do 16384x16384, will downsize to 4096x4096 as compensation for no AA). The high poly object is ~750k poly while the low-poly is 1.2k. No matter ...
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Optimize Blender 3.3 + NVidia GTX 1660 super 3D Manager and Blender Cycles Setup

NVidia GeForce GTX 1660super Control Panel has a 3D Manager per application, in this case Blender 3.3. I'm not sure what changes if any need to be made and seeking advice on how to optimize for this ...
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Small file, simple scene, but long render times?

Question: How can I achieve a shorter render time in cycles of my simple scene? I am having issues rendering a very small and simple scene in Blender. I have made complex scenes before in Blender that ...
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UV Unwrap node working with Eevee but not with Cycles

I did that simple setup, and something is wrong, but I don't know what it is... The uv coordinates are correct when I use the material preview / eevee engine, but when I switch to cycles, the ...
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Glass material is looking metallic

I am using Blender 3.3 on Windows 10 with NVidia graphics. I wanted to make a transparent glass metarial in cycles which will look real, but whatever I am doing, the transmission is not working. Is ...
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Geometry getting ruined when doing cycles rendering?

The geometry of my model is being destroyed when I try to render it using the Cycles render engine. The normals are not the issue. When I try to render it using Eevee or conduct a material preview, ...
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Set material with curve in Geometry node (in cycles)

I struggled so long time to figure out this problem, but I couldn't find any solution. So I ask here to get some advice. I want to put color on my mushroom curve. (and I have to render through cycles) ...

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