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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Completely different render image from viewport Cycles

Hello below I have what is supposed to be the rendered image, and the second image is what is being rendered. I am not sure why this is happening, assuming a certain setting in my render properties. ...
asunney's user avatar
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How can I render animation in seconds? [duplicate]

I am using cycle and I had rendered my animation thinking it would take less than a minute, but my render time is an hour+. I use a MacBook Air M2 2022. My sample count is 8192, while my noise ...
New learner23's user avatar
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Blender BPY get random object location but ensure object still by camera?

I am trying to randomly place an object in my CYCLES scene. The below function gets a random location within the camera's FoV, but there is a problem: if the object is too far away, it will not be ...
pookie's user avatar
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Mist pass issue with Megascans plants assets

I have an problem with Megascan plants assets not behaving correctly with the mist pass. It works with other plant assets (graswald, polygoniq, etc...). I cranked up the transparent and transmission ...
Pitoring's user avatar
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Random rectangles 'missing' when rendering with optix + motion blur

When I render a scene that uses motion blur with optix, there are randomly rectangles/sections where it skips straight to the background. Its random and only exists in some frames, and does not appear ...
Diana G's user avatar
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Can’t render animation

When I render as animation the render doesn’t work, the window appears but there’s no image or any statistics of the render. What I find weird is that I can render a still image perfectly fine and I ...
Cabbage's user avatar
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When the Cycles engine is selected, the object deforms by itself [closed]

I have an object created by me, which, in fact, looks the way I need it, but when previewing or rendering on cycles, some of its faces are squeezed out, as if under solidify, although there are no ...
Akinetsu's user avatar
2 votes
1 answer
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I want to achieve specific kind of lighting for my render but cant get there

I've been trying to figure out a solution, but I can't seem to get it to work. I almost got it to look the way I wanted, but it seems to lack natural lighting and such. I'm new to Blender so I don't ...
Jugal Parmar's user avatar
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Pc keeps restarting during rendering animation

I im trying to render a scene with 160 frames. But when i come back to check the progress after sometime i see that my pc has restarted. This has happened several times now for this same project. Ive ...
Rayen M Sulphi's user avatar
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cycles rendere problem [duplicate]

after I have modelled a mesh , when i render it in Cycles this happen: how can i fix that? here there is a reference of the model:
Dario Gallo's user avatar
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Saved Image Output Missing Layers & Compositing

I'm having some really odd issues getting a render to output to files correctly. I have a really simple blend. A single object with a fire sim. There are just 9 frames and I'm rendering out the last ...
Jammer's user avatar
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Weird Ocean Lighting in Cycles Render

Thank you for reading this. I'm making a ocean scene in blender, it looks perfectly find in the actual layout tab, but when I render it the ocean lighting just turns white. I've attached a screenshot, ...
Liam Dewan's user avatar
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Texture disappears when rendering in Cycles

I am trying to render a scene in Blender using the cycles engine, and i have here a texture with transparency. First it was rendering black because of it but then i fixed the problem with a ...
Paperfoe's user avatar
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Render Passes with Different Environment Textures in Cycles?

Blender Wizards, Does anyone know of a method of using render passes to export with different environment textures affecting different objects/materials? I'm using Cycles. In my scene, I have an ...
Chevy's user avatar
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How a CUDA works

I have activated CUDA. Im having 24GB RAM for my system and 2GB NVIDIA Graphic card. Is CUDA a GPU rendering, that means it will render with 24+2 GB RAM or just 2GB NVIDIA Graphic card and CPU means ...
atek's user avatar
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Need help rendering animation in Cycles [closed]

I’m new to blender but I have done a few animations so I’m not too sure what the issue is. When I go to render my animation the render only shows the first screen with the gold instead of the second ...
prettynickiii's user avatar
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Is it possible to load a games quality with cycles before being played?

Would it be possible to use cycles to load a game if the games assets were loaded before the game was played? As an example, if I were to make a game where you sit in one place in a 3D room and all ...
Drew's user avatar
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My blender keeps crashing all the time - real time render in cycles [closed]

I am new to blender. I upgraded to blender 3.5.1 and it keeps crashing all the time. I tried to downgrade it back to 3.5 and the problems remains. Anything I should do to make it stable? It prompts up ...
Vinco Yiu's user avatar
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Laserlight - Fog Density?

Trying to make something like those laser lights. For the laser itself i found a lot of stuff on youtube, but when it comes to the details im not sure. Its just consistent in those tutorials when it ...
hummingbrd's user avatar
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Set color of background grid when using a sky package

When I render my scene, a part of the horizon is rendered as black. I am using a sky package (Pro lighting skies) in order to set the sky but the camera also captures the "grid" background ...
Uwe.Schneider's user avatar
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Blender 3.5.1 Crashes When Rendering from a Motion Tracked Project With Multiple Composite Layers [closed]

So, I have been using Blender for years but never tried the motion tracking till just yesterday. I got a nice scene built and started to render it, using cycles (tried both experimental and supported ...
Lukamundo's user avatar
2 votes
1 answer
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Blender how to have different pictures for hdri light and background of a scene?

i have a question about the background in a blender scene. i have a scene with a house and with an HDRI in the scene world that serves as a light. so far so good. but now the hdri doesn't look good as ...
Yvana's user avatar
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1 vote
1 answer
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Texture not rendering in Cycles engine

I have a scene which I have made: But when i go to render it in Cycles. The table loses it's texture (which I custom made through Blender's shading workspace. Why is my table texture disappearing in ...
CodeZealot's user avatar
1 vote
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How to have only the shadow of an object into its own render layer?

Hello people of stackexchange, I'm working on a more complex setup but want to understand the basics, so I'll use a simple example. I have a plane and a cube. The cube is casting a shadow on the plane....
user3450's user avatar
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Alternative to motion blur for deformed objects?

The documentation for Cycles in Blender 2.79 is very explicit about deformation motion blurs: An object modifier setup that changes mesh topology over time can not render deformation motion blur ...
wherezyurheadat's user avatar
1 vote
1 answer
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Geometry Nodes result not rendering

I created this scene using geometry nodes. It looks fine using cycles in the viewport. However, as soon as I render it, everything disappears and only the background plane is visible. Every single ...
Bernardo Silva's user avatar
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Segmentation Fault Only during Blender Rendering

I have a system where I create the blender files on my laptop (mac) and sync it through dropbox to my Ubuntu desktop. This has been working fine, but recently I have a complex file where I have a few ...
Evan Bard Ferrall's user avatar
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Smoke sim appearing in solid view but not in Render - Cycles - Blender 3.5

I'm here again trying to make a quick smoke sim with a "steam" like appearance. I followed a guide and this is the second time I use this sim. However, the first time I had to switch to ...
Max's user avatar
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HDRI image in scene world background is too large to see when rotating

My HDRI image in scene world background is too large to see when rotating. So I don't see where the sun is from the picture when I rotate the HDRI. is there a solution for that.
Yvana's user avatar
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1 vote
1 answer
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Glass Bottle under water

I am new here and in Blender... I have a problem with my work. I made a Glass bottle with a message inside and placed it under water. I want to get something like a bottle in the ocean. The problem is,...
Mateusz Marcinkowski's user avatar
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1 answer
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When using Metarig, render result looks swollen

Hello, I'm trying to use Metarig, which has worked quite well so far. But in render preview and rendering, the face looks swollen. I render with Cycles and Nvidia Optix. If I set the render device to ...
Andy Everett's user avatar
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1 answer
34 views

Why doesn't motion tracked object show in render?

I copy and pasted an object in one blender file and imported it into a motion tracked scene. However, when I click "render image" the motion tracked object (robot) does not show in the ...
Hello blender's user avatar
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13 views

Blender does not render a scene that was previously rendered successfully

Blender no longer wants to render a scene that I have previously rendered successfully. Suddenly, when I start the render, the whole PC freezes and I can only restart it with hard reset. I assume it ...
Patrik Grobar's user avatar
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How does shadow-catcher work mathematically?

I know this workflow: mark object as shadow-catcher, multiply shadow catcher pass with background, alpha-over the image and you are done. I'm interested in understanding how exactly does the Blender ...
user224348's user avatar
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Animated mesh is glitching in cycles 3.5

I never encountered this problem before but on two different projects some armature animated meshes start glitching (weird lines) on random frames in the render (not the viewport), as you can see on ...
Nathan Ghali's user avatar
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1 answer
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Render time increasing exponentially each frame

I’m trying to render out a complicated scene, with motion blur, depth of field, volumetrics and lot of vertices. When rendering image sequence, the render time drastically increases from frame to ...
Lukas's user avatar
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0 answers
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Blender 3.5 not recognizing my RX550 [duplicate]

Blender 3.5 not recognizing my RX550 with Driver Version 22.40.51.05-230420a-391252C-AMD-Software-Adrenalin-Edition using HIP
MR WILD FOX GAMER's user avatar
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how do i delete .blendcache files from desktop?

I seemed to have deleted the files associated with the '.blendcache' files that can't be deleted or moved. Any ideas are welcome. After some checking, I think the files are generated by using the ...
Al Corcoran's user avatar
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Blender renders, but the saved output - and render window - is empty; can't render more than HD

It's a simple scene, two spaceships, an animated camera, sun and 18k HDRI from TrueSpace (blender addon); 580k polys. It was working great before, but during a long render - Cycles GPU - to RGBA 16bit ...
cinemagix's user avatar
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Black render on Cycles [duplicate]

THIS IS NOT A DUPLICATED QUESTION As mentioned, I have tried everything under Render result is completely blank and nothings has worked. I'm using blender 3.0.1 to render a scene. It renders properly ...
Lixotep's user avatar
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My cycles render gives the wall unusual black dots and glasses reflects the HDRI image?

When I render my images in cycles , the walls get an unusual shading like black dots( are those noises?) and also my glass reflects the Hdri image How can i correct this?
Yukthy Parthy's user avatar
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0 answers
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Dark regions of render looks distorted / blurry [duplicate]

Rendered with cycles with 2048 samples and 0.04 noise threshold What are the causes for these distortion? Besides adding additional lighting around them, are there any methods of improving these ...
Ironolife's user avatar
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3 votes
1 answer
45 views

Cycles z pass is not expect (1.09 times larger)

I am trying to generate synthetic data using blender for disparity prediction. I used z-pass in Cycles for depth ground-truth, but I find out that the z-pass value is always 1.09 times larger than ...
lee's user avatar
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Loading VDB files in Blender using command line

My blender scene has a Vdb volume object, and I am rendering it in cycles. I wish to perform the rendering using command line (in hpc). I am looking for a command to specify vdb files in command line ...
Nitesh Bhatia's user avatar
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How do i render a image from my active camera when i have a sequence with an animation?

Hi there I already did some projects in Blender but now I am stuck. I always rendered still images out of blender, now I started to make a small product animation which I also could render as images ...
Wimking's user avatar
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Details missing in the camera view

I'm working on a book, the problem is that when I see the rendering not from the camera POV, it's possible to see more details, like the shadow between the pages. In the camera view the shadows are ...
bl4nk's user avatar
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Cinematic renders / scattering / foliage

I'm looking for advice on how i can use some high quality assets and scatter them fairly densely in a scene, I feel as if I've seen certain workflows in max and other industry software where as you ...
Damon Binstead's user avatar
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1 answer
42 views

Why doesn't animation render in Cycles work when everything is played in EEVEE?

I recently started learning Blender, made a little animation. By pressing the spacebar, the animation is played, I made the first trial animation in EEVEE frame by frame, everything works, and then I ...
Natalia Kudriavtseva's user avatar
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Some of hair particles are black (Cycles render) [duplicate]

I have an issue. I have Particle system and I try to render feathers with Cycle render but some of the feathers are displayed black. Feathers are just a texture on plane. In Eevee render it looks good ...
wyy's user avatar
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Render fire with transparency looks washed out

Why it is so complicated to render fire with transparency? A few versions ago, things wouldn't even show on the output file and now the render look very washed out compare to the Blender viewer, If I ...
Ebi's user avatar
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