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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Line in far right of render when using shadow catcher

If you look to the far right of the character you'll see a faint line that looks like the right border of a box. It goes away if I uncheck shadow catcher, but I want to use the feature to include the ...
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How to fix pixilated fire in render

Shows fine in the 3d view but renders blocky / pixilated. How can I fix this?
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Why isnt my gpu recognized?

I have a EVGA GeForce RTX 3060 and Blender doesn't recognize it. I am very sure I have all the drivers installed. I don't know what's wrong. ...
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Ambient occlusion is not in world properties

Ambient acclusion is not in my world properties. there isn't a check box and the distance for it. I saw blenderguru's tutorial there was a check option and distance for it however there is the option ...
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Eevee vs Cycles render issues

I am rendering a bottle and running into an issue with a shrink-wrapped label (image as plane) when switching from Eevee to Cycles. Here is the render through Eevee. As you can see the label is not ...
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Why are objects see through when rendered with Cycles

Why do I see through it. Blendfile
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Is it possible to only render a small region for compositing?

I have a 4K render of a simulation. I would like to composite the time for each frame on top of this render. The time to be rendered is a very small region, so I'd like to just crop that region to ...
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Cycles makes computer stuck while rendering in 3.0 & 3.1 [closed]

While trying to render an animation with geometry nodes, Blender Cycles makes system stuck after rendering a few frames (in HD & Full HD). The only option is to force restart the system. ...
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Cycles black areas

Seems to not be hardware related. Strange black areas depending on view direction. HDRI environment (visible in video) No other lights etc. Cycles Black Areas Video
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Render depth, vector and normals without rendering RGB

I've rendered RGB images from a set of blend files and now I want to generate depth maps, normals and speed vectors from the blend files. Since generating these takes much lesser time as compared to ...
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Laptop specs requirements [closed]

Hello are these specs good if I want to create complex game environment 3d art using blender or other 3d packages? Processor Intel(R) Core(TM) i7-6500U CPU @ 2.50GHz 2.60 GHz Ram 16 GB Screen ...
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Blender result different from png rendered [duplicate]

The actual rendered png shows nothing at this pixel(white circle), because alpha is 0. But Render result window still has some color visible(white circle).You can see its alpha value as well in this ...
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Ocean Foams How Can I Do İt

How can I make these foams while the ship is moving? I'm trying with the Dynamic Paint feature, but it doesn't work the way I want.
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Why do these particles generated by png images have a black background?

the instance object is look great. but the particle is black I tried to tune light paths → total and transparent to 24 even 1024,its look better but still black This is the render setup and ...
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how to solve viewport shading as render, animation project problem?

I have tried to play animation in viewport shading render mode but it looks blurring How can I fix it ? I'm beginner, its a project in my uni. Its looks like this when I tried to play the animation , ...
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Blender render result not displying correctly [closed]

The actual rendered png shows nothing at this pixel(white circle), because alpha is 0. But Render result window still has some color visible(white circle).You can see its alpha value as well in this ...
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How to add collision into the paths? (Blender)

I've created an Ico Sphere, and in the particles properties, I changed the render settings to "render as path," and I wanted to make a collision between those paths and the sphere around ...
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Why is Final Render not like Viewport Render?

Final render of my grass is nothing like the viewport render. In the final render it is showing much less grass than the viewport render. I'd like to know if this is okay or something is wrong.
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Black Shadow showing on object in cycles

There are black shadows/lines on the axle and the side (both pictured). This only shows in rendered view, and once I put the project into Cycles from EEVEE.
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Vertex colour as shader mask - Cycles

attempting to use vertex maps (either weights or colour) as a way to blend materials on one object (ie no uvs). Right now I have vertex colours working fine as mix input (pictured), but this only ...
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Normal maps look different in Cycles vs. Cycles + OSL vs. Eevee

I was rendering a model with a normal map with Cycles in Blender 3.1.2 and noticed that the result looks different from the result in Eevee. The result is similar to the Stackexchange issues described ...
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Figuring out how to make a Character and need one more Element. What is the fastest but at same time most realistic way to make a shoe? [closed]

just looking for my new job and am trying to learn blender. What is the fastest way to make feet for a character (I do not need to animate the foot, one shoe is fine). Thanks
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Areas with no light in cycles engine (even with a light source right next to it) [duplicate]

So recently I've been trying to learn blender and came across an issue when following a tutorial. There seem to be black areas on the object no matter if I put a light in front of it or super far away....
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Strange distortion and low performance using cycles viewport renderer in Blender 3.0 and onwards

Essentially the problem is when in viewport render mode with cycles, if I'm not looking through the camera, objects become incredibly distorted as shown in the first picture. NumPad 0 to align view ...
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Material in rendered view differs between 3.1 and 3.0 when using mirror modifier

I recently updated to Blender 3.1.2 and wanted to proceed working on a file I created in Blender 3.0.0 I use the mirror modifier for several objects. I defined one single empty as a mirror object ...
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Black areas in Fisheye lens corners

today I wanted to try if it is possible to make mini planets with Fisheye similar to this: The problem I have is that when I try to render my test with any settings I will always get black corners ...
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Failed to load Optix Kernel (kernel_optix.ptx)

After changing GPU to a RTX 3090 and setting Blender 3.1.2 to render cycles using OptiX (also tried CUDA), my renders only make it to about 30 frames before the textures start to break in various ways ...
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Achieving precise control over surface imperfections for training machine learning model [closed]

I am currently working on a project to train machine learning models for anomaly detection. To such end, I would like to generate random combinations of objects and textures, then apply some surface ...
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Much more Noise in the whole scene with a Light Points?

i am currently working on a steampunk castle and have the problem that the entire picture becomes significantly noisier as soon as I put normal points of light in the lamps. I set the light points to ...
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Is it possible to render curves as hair?

I've made some hair in another DCC (Houdini in this case). Now I'd like to render them in Cycles. But they're just curves, not Blender's hair particles. Is it possible to 1. render curves as hair ...
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Textures Not Showing

Textures not showing in blender cycles -- the texture nodes are completely the same, but for some reason, the texture doesn't show up. The materials are on the same mech, different texture parts.
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How to cast lights into video? (Shadow catcher for lights)

I'm not sure how to phrase this. But how can I make a shadow catcher that instead of catching shadows actually cachtes lights and then translates that into the real video? So I made the Doctor Strange'...
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How do I make a cartoonish material in Blender Cycles?

I'm trying to make a stylized material like this: I want to bake it eventually so I can only do it in cycles, but I can't seem to get anything close, this is my closest render but the shadows are so ...
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Very Weird Eevee UV Issue

so I have found a really weird Issue with Eevee and UVs. Basically The Uvs apply an Offset to the textures that isn't present in the UV Editor. I have Deduced that the problem lies with my PC, and not ...
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14 votes
2 answers
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Are render results hardware dependent?

I have a technical question, which maybe someone with a render engine coding background can answer: Assume we give two PCs with fairly different hardware specs (e.g. one has a dedicated graphics card ...
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4 votes
2 answers
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Texture splits in the middle

How can I make the texture line up better? It splits in the middle. I'm using applied geometry nodes. You can find the texture here.
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Render Visibility Keyframing [duplicate]

Very simple question for you guys - what is the best way to keyframe if an object is active for render or deactivated? Example, say I want my object to render on frame 1, but I want it disabled on ...
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Strange shadow on render

I have strange shadows on render, but in editor I don't have them. Anyone know how to remove them on render? Help me, please
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2 votes
1 answer
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No lights in Cycles viewport

Hi I'm a beginner in blender. I've modeled this house but when I switch to cycles viewport I can not see any light instead just grey color. I can clearly see the lights when I render the scene in ...
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4 votes
2 answers
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How to create a Wheat Straw Plastic material

I am trying to create this type of Wheat Straw Plastic material and having a short animation where the speckles move. How would be the best accurate form
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Texture becomes black in Cycles

I downloaded a 3D model from Sketchfab and it looked normal when I rendered it in Eevee. When I switched to Cycles, most of the parts of the texture turned black. From what I read, other people who ...
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Baking textures usefull to shorten render times?

So I always thought that bakingtextures is just for assets that you want to export for games but now I have read somewhere that it also helps a lot with render times. My Laptop explodes everytime I ...
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1 vote
1 answer
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How to get a disparity map from depth map in Blender?

I am trying to convert the depth map to a disparity map but I got some problems. Here is my setting in compositing nodes. I use these two equations: (1) focal_length(pixel) = focal_length(mm) * ...
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How can color and alpha channels differ in the Image Editor?

I'm rendering with composition, my goal is to isolate an object, its shadow, its reflection and the background in order to be able to adjust the background image/color, and the intensity of the shadow ...
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Adding depth of field to Individual passes i.e Emission, Ambient Occlusion, mist, etc?

So I've been using the built in depth of field in blender more on my renders, however I notice this isn't transferred over to any of my passes, making it harder for me in my compositing stage. I've ...
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2nd Particle system not visible in render. Was visible before

Hey guys and thanks for reading. Wondering why the second of 2 particle systems will not render in cycles. It does appear to render partly when motion blur is on. First image is a snip of viewport ...
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Make background not effected by environment texture with layers and compositing?

I will try my best to explain what I want to do, so I will explain 1. what I did first and 2. my problem. I rendered a glas cube without anything else in the scene (Black Background) and used a ...
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2 votes
1 answer
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Color Management "Look" setting VS controlling via environment

Just wanted to know if the contrast options in the "look" dropdown of Color Management settings do the same thing as just manipulating the environment, lights, materials, etc. basically, is ...
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Blender 3.1 Optix Error on Manjaro - kernel_optix.ptx

Since the last Manjaro Update I get an error message when I try to switch to rendered view in Blender 3.1.2 : Failed to load Optix Kernel from: '/usr/share/blender/3.1/scripts/addons/cycles/lib/...
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3 votes
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My 3D model skin turns black in Cycles

I downloaded the 3D model of a game, and everything was fine, until I tried to view the model in Cycles, and its skin turned partially black. I think it's because the texture of the skin is ...
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