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 Alpha Issue - Plane with seamless edge

I am attempting to overlay a high res, sculpted plane on top of another plane but I am struggling to hide the edge of the overlaid plane. The plane has a shrink-wrap modifier, a data-transfer(normals) ...
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Cycles Emissions

I have been trying to replicate a far-away sun between the two moons you see in the picture. However, I cannot understand why this simple emission shader is producing no orange colour on the emission (...
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Sequencer is Rendering In Eevee Vs Cycles and looks different than Viewport

I camera tracked some footage in my alley to try and composite some models but when I hit render either all my models disappear when rendering from viewport or I get a weird shading when rendering ...
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cc3 character invisible in eevee but visible in cycles

I am new to Character creator, so I exported the character from cc3 to blender, but when I render it gets invisible, but after changing to cycles mode it appears. Please help this friend out. I don't ...
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20 views

volume shader inside of a glass material

I am trying to create a scene of nebula trapped in a glass cube,I have sucessfully created nebula by using principled volume,however whenever I try to put a transsimisive cube around it,cycles ...
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29 views

Bump and Normal Map node changes color of my Image Texture

I tried to use apples as a texture and add to it a bit of depth. But after adding bump or normal map it changes color to black and white. How can I keep the color?
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377 views

World texture doesn't show no matter what only in Cycles

No matter if it's an environment texture or just a solid color it shows black. I've even tried import worlds I made in other files
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76 views

HDRi and sun lamp vs Nishita sky texture

I would like to know is there any benefit to use Sky texture node / Nishita with a bg backdrop compared to a HDRi and binding sun lamp. Also if you use Sky texture is there any benefit to add Sun ...
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1answer
156 views

MixRGB Node - RGB vs HSV

While watching this tutorial, the author mentions the difference between HSV and RGB at timestamp 4:09. The thing is, when he adjusts the value slider to 0.5, the RGB values change to 0.214. When i ...
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Glass material looks different in final render and cycles viewport, manta flow. I have transparent glass turned on

Here is the viewport in cycles renderer. And here is my final render. Why is there a difference?
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Completely Blank/White Render (2.8) [duplicate]

I am having difficulty rendering my scene in Blender 2.8. When I render my scene I receive a completely blank/white screen. This is occurring when I attempt to use both Cycles and Eevee. Does anyone ...
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No Compatible GPUs RTX 3080 Windows 10

I already tried to reinstall Windows using the keep files and apps method. Still no joy. Already tried switch between drivers (471.96) Could someone please help?
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What's the point of having a foreground and background layer in a motion tracking scene?

I recently ran into a problem regarding the pixel filter that I solved here and it got me wondering. Now that blender has a simple check to make an object a shadow catcher, what is the point of ...
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cycles shadow issue, one object in the scene is way darker than it should

In my scene, one of the objects get's darker than the others, in the picture, the arms of the model should be the same color than the legs, the same materials are applied. The problem only occurs in ...
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19 views

Object is not being rendered properly at at medium+ distance (Eevee vs. Cycles?)

I created an astronaut floating in space, he's working fine. Then, in a separate .blend project, I created a galaxy to float behind the astronaut. I used append to add the galaxy to the astronaut ...
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What are these black edges appearing on my object? Would really appreciate help! [duplicate]

I've got this issue which appears when I've created this bolt. What's worse is that they appear even when I render the object - it looks like there's black paint on the metal model. Does anyone know a ...
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Changing CyclesObjectSettings from a script and update the viewport

I thought it was going to be an easy one for my first ever script but boy was I wrong. All I wanted was a script that creates a basic plane and set it to be a Shadow Catcher so I wrote this basic code:...
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Spotty, glitchy, corrupted renderview

I'm working on a large scene animation that has some issues. As you can see here, the viewport shading seems to be corrupted. This translates as well into the final render in cycles, although not as ...
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21 views

Trees Are Blurry in My Render (Cycles Blender 2.93)

I am using Blender 2.93 on Windows 10 and Cycles GPU on Experimental Settings. I did a render that looks like this. This is what the trees look like in solid view. Why am I getting this blur in the ...
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43 views

Why is my 3d viewport is different from my f12 cycles render?

So I made a little scene a while ago, put it on the shelf, bought a new computer recently, and tried to enter the project and work some more. Its a plane flying through some clouds, the clouds come ...
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38 views

Sudden unwanted change in light intensity in cycles [closed]

Im working on a project and came across a problem with cycles. I have a turntable render of my building which is mostly ok, but at a certain point the lighting inside of the building (mostly lit by ...
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36 views

Denoising kills it all

I have been looking for some smart solution but after couple of hours I am done. How can I save those grainy details, that in fact are noisy, from being smudged by denoiser? I am working with cycles, ...
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23 views

Cycles CPU vs GPU tiles, unusable results

since my rig is rather old, I have to render using CPU + GPU. The problem: the GPU, for some reason, seems to render differently. I have alreay seen a thread about that in 2.8, I can't believe this is ...
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25 views

Grease pencil / 2D drawing in cycles?

I made an animation that is supposed to be rendered in cycles. Now i'll like to add some 2D animation, impact smoke and such. But i can see grease pencil doesn't render in Cycles. Is there any work ...
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Blender free up memory using command line

Note: This is my first post, so if my title is not appropriate, please let me know what an alternative could be for more relevant answers :) I am rendering a scene for someone(so no way for me to ...
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1answer
35 views

Compositing transparency challenge. Particle not part of alpha?

Hey Wicked Smaht people! I have been working on a project that will be super imposed, in photoshop, over another image. So, I have been trying to composite it so that the background is transparent. ...
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Adding Volumetic to a scene changes the alpha transparency around my vegetation

I've imported some vegetation from the "tree vegetation addon" Here's what it looks like When I add a volumetric cube (not to the world), to add some fog, It messes up the transparency ...
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80 views

Shadow catcher too dark / Blender 2.93

I'm facing a problem with shadow catcher, I need to get a transparent image with shadow to put it on the totally white background. However, when I use the shadow catcher, shadows are getting very dark,...
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15 views

Why does my GPU render have a lot more noise than my CPU with the same settings? [duplicate]

I was test rendering ian hubert's splash screen blender file when i noticed that my CPU render is much cleaner than my GPU render. How could that happen? I used the exact same setting for both of the ...
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1answer
30 views

Shading issues showing in rendered Cycles viewport but not in solid viewport

For some reason when I render the object in viewport 3D Render I see these lines that look like weird shading or geometry. But I have fixed this in the Solid Viewport where they don't show up. Also I ...
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1answer
89 views

How to make glass material more "Reflective" / "shiny"

So I have a scene where I want it to be raining. It is a room with 2 windows, the camera points to the windows and looks out. The surrounding buildings are faked by a box enclosing the room. A plane ...
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37 views

Blender Cycles affect incoming rays

So I understand how ray tracing works. And in shader nodes in Cycles you can use LightPath node to tell the renderer how certain material affects the rays that come from other object. For example if ...
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2answers
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How to render sprites alised (sharp) in Cycles? [duplicate]

Is there a way to disable Anti-Alising in cycles so renders will be pixelated? In Workbench there is option for no filtering but its missing from Cycles.
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why does my model look like this

I don't know how to really explain this problem besides that my model looks weird in every mode besides workbench and Eevee the final one is Eevee i just forgot to add text here is the file download ...
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1answer
40 views

Hair problem in Blender 2.93.2 (viewport vs. render)

I have an object covered in multiple hair particle systems with children. They appear fine in the viewport with Cycles (even with the viewport children count set to the render count) but are distorted ...
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how do i keep dense volumetric effects staying sharp, mine keep going fuzzy when i change unrelated parameters

i have a dense volumetric scatter (happens with absorption too) shader with very fine details that i want to keep sharp, it stays sharp when i connect the nodes but it goes fuzzy and different when ...
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24 views

Why image as plane not giving transparent result [duplicate]

I want to add a decal to my model. With the image as plane addon. Imported image as plane and added subdivision modifier and shrink wrap modifier. Why its giving black shade or color, The image is ...
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39 views

Create white powder coat material [duplicate]

does anyone here created some material that looks like this using Cycles? I was able to create a material that looks similar using Eevee, but its looking completely different using Cycles. For Eevee ...
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1answer
36 views

disable/enable lights/objects depending on render engine

Can i somehow enable/disable lights/objects depending on render engine? e.g. sun should be disabled on cycles, a plane with emission should be enabled only on cycles. On EEVEE the sun should be ...
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25 views

How to use Geometry Node 'Point Distribute' with Cycles Displacement

Not sure if this is even possible, but is there a way (using geometry nodes) to scatter points along a surface in a cycles render if said surface has a displacement? (Not only a bump.) As it stands ...
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Is it possible to create a Gaussian Pass Filter in Material Nodes?

I noticed someone did something of an image kernel here: https://blender.stackexchange.com/a/52326/94245 I was wondering if something similar is possible with a gaussian kernel to achieve TRUE ...
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Need help fixing "Image as Planes” color, saturation and brightness. Looks washed out compared to original

I imported an "image as planes” in Cycles and am getting a washed out/lighter version of the original. This is the image and node set-up I currently have. Can anyone help me fix? Here is the ...
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Getting "OpenCL error (-46): CL_INVALID_KERNEL_NAME" when trying to use Cycles with AMD RX 570 [duplicate]

Help! I've tried updating my GPU drivers, reinstalling Blender, and restarting my PC! In the past GPU rendering has worked for this card, but it produced artifacts, and now it doesn't work at all. Any ...
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1answer
15 views

How to render semi-transparent shadows on a shadow catcher?

Hi I'm trying to render a shadow for a 2D sprite. I want it to be semi-transparent. I have a shadow-catcher plane, the object is invisible for the camera and my rendering engine is Cycles. However, ...
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22 views

Blender 2.93 (and LTS) rendering all weird on some animation frames

I have had some issues rendering a 3000 frames animation lately. Some of my frames looked like this: or this: instead of this: I have no Idea what could be causing this as it happens on random ...
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26 views

Layers and shadow passes

Render shadows separately,The rendered shadow cannot cover the object.
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38 views

How can I create a "pencil edge" to my object?

Blender 2.93.1 Cycles with GPU Compute - OptiX Denoising Light Paths: Total 4 Diffuse 2 Glossy 2 Transparency 6 Transmission 12 No Clamping (I put the light path details here since I'm working with ...
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Why do the clouds look blocky?

I imported vdb clouds into Blender and noticed in the viewport they looked very blocky. So I rendered it out and it looks like this. I tried changing the light path and volume settings but nothing ...
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Why would a plane displaced with Geometry Nodes not appear displaced in Cycles Rendered View but does in EEVEE?

I'm experimenting with Geometry Nodes after following the Entagma "Alien Orb" tutorial on YouTube. I'd like to develop a general method for creating complex procedural cavities on arbitrary ...
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Can I change the sampling importance of a portal?

When using portals in a scene, is it possible to increase the importance of a portal relative to other portals and lights in the scene, so that light coming through it will be sampled more often than ...