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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Botaniq Object showing in final render view but not in Viewport

This render is supposed to be of a flower. The background landscape has grass, flowers and trees but they are far away and not even on this scene. When I go to render I see random trees covering the ...
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Cycles render is blank in viewport render for previews [duplicate]

I think I have the same problem as here Cycles viewport render blank The rendered preview in cycles does not work. The display in material mode works fine but not in shading mode. And everything works ...
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It's possible to transfer some data (value, attribute) from geonodes to cycles/eevee [duplicate]

I need to transfer some data from geonodes to cycles/eevee. The geometry nodes are changing the size of the instances. I want to change the color of the material depending on the size.
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Forged carbon shader

I've already broken my head how to visualize it, maybe someone has encountered something similar or knows how to implement it?
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Creating random positioned cracks on pre made model

I need to apply cracks on model. I've tried to use boolean with crack shaped objects on bigger object but renders take too much time. Also I need 500 renders. Any suggestions ? In the figure below ...
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Particles Rendered from Collection Are Missing Their Material

I made a Blender File where I'm trying to emit "cold sparks" from a simple sphere. I created a sphere over a plane with a collision physics simulation on the plane. I put a particle system ...
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Python Script to turn duplicate parts into instances

Right now I am animating a model that is coming from cad software. However the model can only be exported as stl parts. meaning that I have something like 25,000 parts even though there are only like ...
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Baked Texture doesn't match viewport

Like the title says, I'm trying to bake a texture in blender but the result is weirdly different from what it should be. The mesh is a low-poly human figure, and the sides of the head in particular ...
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Blender render "splits" frame in two parts

I have a strange problem rendering Blender. In the Viewport Shading everything is fine, but when I render in cycles, the frame "splits" into two parts, and it seems that above it renders in ...
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tearing in object using displacement map

im working on an object that has displacement. it has 4 sides that will be seen. the 2 long sides and the 2 short sides. the long sides have materials separate from the short sides although they are ...
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Composite image with shadow catcher

So, while compositing a scene, seeing as DAZ models are kinda resource intensive, I tried to break it down into layers. The layers are combined using alpha over nodes and seem to be in the right order....
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rendering problem with cycles

i have a problem rendering i get this when rendering with cycles 4000 samples fhd ... and i dont know tyhe reason for it to crach ... i have tried rendering it many times and deleting any particle ...
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Planet Earth in Cycles, Atmos layer above ground and clouds only displays clouds beneath, ground not visible

Following the good old BlenderGuru Tutorial for creating Earth in Cycles, but when I add the Atmosphere layer I can only see the Cloud layer beneath it completely obscures the Ground beneath the ...
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Why can't I see the render result of fire and smoke simulation? [closed]

I'm doing some fire and smoke simulation, and I can see the result in Solid Mode, but not in Render Preview, and I can't explain why. I have no material on the domain because I was never told to do so ...
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Blender Render Problem [duplicate]

I'm making an animation and my problem is that as soon as an object is a little further away from the camera, it immediately disappears. Is there a setting for this? The object should still be visible....
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2 answers
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I can't find the Save Buffers checkbox in Blender

I am trying to show the tiles as they are being rendered and another forum post said to uncheck the Save Buffers checkbox but I cannot find the checkbox
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Rendering camera problems

I'm in a middle of rendering shot 2 of the veld for the animated short I'm creating and it keeps turning out like this. Feel free to comment if you have any suggestions.
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Cycles Render Problem with denoiser

i have a simple scene with some cubes an lights with volumetrics, when the render starts its ok but when the denoise its apply, some weird shading results
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Different shadow caustics in viewport and final render

I'm currently doing an architectural rendering with glass bricks. Since I'm trying to create an accurate and specific pattern of shadows on the wall I'm using shadow caustics. The strange thing is ...
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Blender 2.9 (and 3.0) Bone Name and Constraint Issues (Solved)

Blender 2.93.4 and 3.0.0 Issues: Inverse Kinematics Bone Constraint applies to the Wrong Bone (AKA any Bone but the Selected Bone) Bone Name is applied to the Wrong Bone and Bone Information is not ...
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Investigating why realism feels off

I'm trying to create a realistic looking chess board. I don't have a picture to compare it to, I'm just improvising. However after rendering it feels "off" and being a noob I don't have the ...
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How should I re-create this hair in Blender (Cycles)?

I am attempting to recreate the hair created by Marko Xu(羿) within their post "Forest Ranger" (more pictures can be viewed via the link). It was original created in Zbrush and Maya. Here is ...
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blender gpu render time isn't stable why?

im trying to render an animation in blender with cuda , currently im using gtx 750 ti for render , i have a scene with a simple character in it and no major change just a character walking , once i ...
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Scene Renders well in Eevee but Textures are all blank in Cycles

I'm having a problem that's best illustrated with images. Here is my render in Eevee: And here it is in Cycles: The compositor is very basic, with the image plugged into the viewer and composite ...
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Fading multiple objects at once in Cycles turning black [duplicate]

I'm using Blender 3.0.1 with Cycles and trying to fade multiple objects in and out slowly. All the objects have the same image texture. I have watched countless videos about it and they all say the ...
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what can i do to prepare for an overnight render?

I have a really large animation in cycles that I want to leave to render overnight. how should I prepare? would pointing any fans at my computer cool it a little? i just want to be extra safe about ...
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How to add a `Bloom/Glare` effect in Cycles without using the compositor every time?

I am well aware that the "Bloom" feature is not available in cycles, and can only be recreated in the compositor. This is something I am totally confused about why the developers didn't add. ...
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Object Randomly Going Transparent When Rendered

I have an animation that I did with a tree falling over. It's going to be put over some footage I have so I'm just rendering the object and the animation itself. I added transparency to the background ...
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In the Dissolve tab for smoke simulations is the ‘time’ seconds or frames?

I’m currently testing out smoke and fire simulations and I came across the ‘Dissolve’ tab, and I’m not sure whether ‘time’ means frames or seconds.
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Render time being wasted on empty frames

Can someone please explain to me why blender is spending time on empty frames? I literally spent ages reducing the number of frames to less than a half so I can speed up my rendering time. But all ...
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Allow drivers execution while rendering on google colab

I use Google Colab, specifically blender-colab on github to render a scene, but in the scene I use some drivers to show/hide some objects at certain time. By default blender on colab turns off auto ...
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Render Point Density to Texture

Was curious if anyone knows of a way to render out a point density to a 3dTexture for use in a game engine? Usually these are just rendered to a red channel and then imported into a 3d texture in ...
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2 votes
1 answer
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In cycles, how do I make slow motion blur?

I have a scene where someone is running and diving head first into a trap door. I want to show the expression on the character during the dive in slow motion. So to make the character not look like it'...
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Blender freezing continuously & using only CPU when rendering with GPU

I've downloaded a model of a train which drives through my scene. This model was huge, so I simply scaled it accordingly. I use a boolean modifier to make it appear and disappear. After I've added the ...
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Mixing Transparent BDSF with Glossy BDSF using a Fresnel factor in cycles results in black material

I have the following shader node setup: and I would expect this to work similarly to the Blender manual's description of using a Fresnel node to blend Glossy with a Refraction BDSF to emulate the ...
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Is it possible to change the direction of shadows when using an HDRI for lighting without affecting the color?

I want to create 2 images with mirrored lighting. The direction of the shadows is not particularly important. It is only important that the second image casts a shadow that goes exactly into the ...
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2 votes
1 answer
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Simple Python script to be able to change the number of samples in a Blender startup script

I have tried writing a simple script to set up de-noising and a render sample of 100 on Blender 2.93 with a simple cube animation. ...
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1 answer
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My feature wall does not appear straight in camera

I have created my home as a concept so I can see if I can figure out lighting and other things, but I cannot figure out why this wall appears the way it does. When i render in Cycles its not straight ...
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1 vote
1 answer
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Is it possible to recreate iPhone pro frosted glass material using Blender's standard shader nodes?

Apple "Pro" iPhone models have had a frosted glass back material for a while now and I am not quite sure how to incorporate such a material in my models using Blender's standard shader ...
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When rendering, the mesh is visible, and part of the UV texture is lost

After I finished working with the shader editor, I ran a test render and noticed that the part of the UV texture that is normally displayed in the viewport is not visible on the render. Moreover, a ...
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4 votes
2 answers
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Ugly shadow glitch

I'm new to blender so I may be just missing something simple. The bed frame in my low poly bedroom design from a tutorial I'm following has bad shadows on the top and bottom frames. This is when using ...
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Make my smoke less fake

My smoke looks like coming from an electronic cigarette... I used the particles system to create this smoke. I tried to play with the density using shader nodes but it's been unefficient. On which ...
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Some parts of material appear darker than it should be

I don't know why Eevee works well, but Cycles creates weird patches in the material and I don't know what to do.
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black strip on eyelash

When I render in cycles I get a black strip that looks like a shadow on my character's eyelashes. It doesn't happen when I render with eevee. How can I fix it and remove this shadow from the lower ...
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1 vote
1 answer
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Compositing effects does not show in render

I've been trying to render this animation, but the compositing "glow" effect does not show even after I apply the nodes. Can someone tell me how I could fix this problem? Or even better, ...
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1 vote
1 answer
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How to use textures to influence point density node?

I want to take the shape that is being output by the point density node and displace it with other texture nodes, as described in Gleb Alexandrovs talk about Nebulae: https://youtu.be/4w8_SBxCOxo?t=...
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How to create Splashscreen launch Multiple Default Start files optimized for each render engine

I'd like to have the option of launching Blender then from the Splash screen, choosing a pre-configured optimized default scene for Cycles, Eevee and also the default startup scene. example: Launch ...
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All objects are completely black in material preview

I've been using Blender for a couple of years on my mac but I completely skipped over the basics and how to actually work things. That being said, I was working on a project, saved my file, closed ...
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-1 votes
1 answer
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EEVEE or CYCLES - Render Lawn Grass? [closed]

Looking for quick tips on front yard lawn grass. There are many good tutorials show how to make grass, but wild landscape grass. how to make it look like it's not wild and uncut, yet real?
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Change surface's apparent color based on light depth from source

I'm trying to find a way to color the surface of objects depending on the light depth from the light source, but only in appearance to the camera. I have one light source in the scene, and I want any ...
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