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 to add ambient occlusion to image texture to add dirt look

I am making a barn and need to the bottom of the barn to show dirt build o pin order to add an extra layer of realism and separate the ground and wood better. I have tried using ambient occlusion to ...
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Shadowcatcher renders material wrongly

I am trying to render a scene with transparent background with cycles, however, when I apply "shadow catcher" to the backdrop, a material in my scene changes. I am trying to render a ...
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Material with particle info node location is not working as expected

I'm trying to discriminate the lower particles from the higher particles on the z axis, but the particle info location makes it very random. Half of the particles are about z=0, so I expect a smooth ...
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Export settings for Instagram

stop me if I'm asking this in the wrong place, but I'm kind of stuck. Tried uploading a short video to Instagram yesterday - this one - and Instagram just destroyed it. Not like 'a few lines unclear' ...
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Cycles Subsurface Scattering Intersections

I've noticed that whenever objects with a subsurface scattering material intersect with each other, it creates these dark really obvious outlines across the intersection. I haven't been able to find ...
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best way to Queue render different project files

So I've personally been dealing with rendering bunch of projects. opening projects, render, then wait until finish. then start another render and repeat takes too much time. So I've been using this ...
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View layers n00b: holdout & indirect - no holdout, objects, objects still visible

I'm fiddling with view layers for the first time ever. Got a large Archviz project, organized in collections on several view layers. My understanding is as follows: To render out the streets and ...
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Material changes when shadow catcher is applied

I am trying to render a scene with transparent background with cycles, however, when I apply "shadow catcher" to the backdrop, a material in my scene changes. I am trying to render a ...
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30 views

Motion Blur causes weird artifacts in Cycles

When using Motion Blur while using the Cycles Render Engine I get artifacts around the corners of objects that are exactly the size of the tiles I used for rendering. You will see what I mean in the ...
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volumetrics not visible through glass / refraction

Cycles. I have a cube with a volumetric scattering shader in a room with ceiling lights. the volumetrics look good inside, but when viewed through a glass pane (principled bsdf with Transmission or ...
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Blender 2.93.2 @ Ubuntu 18.04 crashes while rendering with Cycles on a headless server

I'm running Blender 2.93.2 on Ubuntu 18.04 (this script of mine https://gist.github.com/vadimkantorov/eb53ce740cb80c12444079875facff85) It uses Cycles. I found this thread https://devtalk.blender.org/...
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Volumetrics not rendering/previewing in Cycles but working fine in Eevee [duplicate]

Hello Blender Stack Exchange! I seem to have a problem where my fog node setup doesn't display in the scene using Cycles engine (not working in 3D viewport nor in the final rendered image) but ...
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Weird pixelation effect on backdrop [duplicate]

[Reupload with more information] Hi! I have a problem, you can see a weird pixelation effect on the backdrop of these renders. I don't know what causes them. I have a simple beveled backdrop with a ...
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Physical units for baked lightmaps

I want to be able to estimate either the total light falling on an object or the light absorbed by that object, with meaningful units (probably Watts). Based on the discussion here, Blender can and ...
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36 views

Cycles Bake - Noise texture becomes flat color

While trying to convert some textures from using generated textures (and generated texture coordinates) to UV image textures, I keep running into an issue where I lose a large amount of my textures' ...
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Blender Cycles Render Speed Optimization for animations

i have a couple of questions about speed optimization for Cycles Render Animations. Many of the posts that I have seen refer to older versions of Blender and are sometimes a bit contradictory. I´m ...
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Adaptive Subdivision combined with wave and curve modifier bugs out

I ran into a problem while experimenting with different Modifiers. The problem occurs when applying on a hollow tube the following modifiers: 1.Curve modifier with shapekeys that change the form 2....
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Missing Cycles render engine

When trying to switch from Eevee to Cycles I discovered that there is no Cycles render engine setting on my blender! I'm using version 2.92. Any help is appreciated. When I search for cycles this is ...
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52 views

Photoshop-style color replacement ...using material nodes?

Okay, it's a bit of a crazy idea but... I have a sort of complex material where just certain bits have this hot magenta (no, it's not a missing texture) that needs to be toned down or maybe even ...
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After render, some objects turn to basic mesh

When I render, one collection of objects remains/reverts to basic shape. I've tried the toggling enable render, checking cycles settings but no luck. I am a beginner at blender and never came across ...
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Why does blender render faster when I’m moving the mouse? [closed]

So this is a bit of a weird question. But I rendered a scene and it took 19.54 minutes, but if while I was rendering it, I clicked and moved the mouse a bunch, it took 17.52 minutes. It’s not a ...
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Blender: how can I render true color?

I need to render images maintaining its original colors. Here you can see the png (with transparent background) image on the project Here a frame of the output: Here the packed .blend file: https://...
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My textures appear too dark when in the material tab viewport

The texture looks darker in the viewport compared to how it actually looks which u can see in the tab to the left. There's not a huge difference but u can see the contrast with the white. I would like ...
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rtx 2070 mobile not rendering as fast as it should

I've been having a few problems with CUDA and OptiX rendering in Blender Cycles. The RTX 2070 mobile that I have is not always rendering at peak speed. When rendering my scene the usual render times I ...
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53 views

Has anyone had problems with the latest Super Image Denoiser (SID) add-on? [closed]

The add-on installs and works fine for the most part. The Spatial mode works perfect and does wonders for denoising stills, but when I change to temporal denoising I'm running into issues. I'm ...
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133 views

Cycles: Strange effect on glowing object

I have the arrow with glowing shader. Rendered by cycles it looks like this: You can see the light rectangles, I don't want there. Geometry of the arrow looks fine: My shader: The ...
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Is Principled BSDF suitable for metals in terms of Fresnel?

Principled BSDF uses fresnel reflections for dielectric materials. Dielectrics have two fresnel knobs: specular for facing reflections and IOR for transmissions. Principled BSDF Does the Principled ...
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32 views

Shadow-only material (Shadow Catcher)

I have a scene where I'm using a HDRI image for the background (and have a separate sun inside). The HDRI doesn't contain only sky, but also a bit of the ground. The problem with placing objects in ...
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Decal transparency and or culling problems Blender 2.93.1 Cycles

So this sounds like a known fail from my side, but i tested it so far that i realised Blender 2.82.1 is doing the right job, while 2.93.1 just give me a bad result. Is there something i just missed? I ...
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Why is cycles rendering an object out of place?

The problem is that when I render my image, this happens: Those planes should be touching the walls. This is what it looks like in viewport.
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Blender renders smoke in preview but smoke not in video or image file? [duplicate]

I am rendering smoke, and all seems well until I open the output file in Premier Pro or Photoshop. The liquid in the glass renders (the smoke renders inside the glass) but as soon as the smoke leaves ...
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1answer
39 views

Black triangles in my render

I am trying to render a terrain using Digital Elevation Model. During my render I am getting blacks spots/triangles in my render. I tried recalculating normals, applying subdivision modifier, shade ...
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Triangle artifacts appear on rendered result

thx in advance. When I render the rendered output has triangular artifacts not visible in the viewport even with the same samples. Left side is Cycles Rendered Image, 128 samples, right side is ...
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Weird Rendered Product from Cycle

Sorry if this is just a simple question, but I have been trying to render an image for my project using the cycle engine. This is what i see in the 3D viewport Everything looks perfectly fine, but ...
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61 views

Mix shader object (semi-transparent) causing unwanted light spots with Cycles on material beneath

I am new to Blender and I cannot wrap my head around this: The issue: I have a planet (icosphere) with a noise texture and a small noise bump map. Above it is a slightly larger icosphere with a mix ...
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39 views

Smoke not rendering in Cycles - but is baking?! 2.93.1

I have created a potion with a liquid and smoke, when I bake the simulation everything is great, but when I try to render the animation, everything except the smoke renders? Help please!! I am using ...
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1answer
36 views

Eyebrows in default position in render

So, for some reason, whenever I pose the model, the eyebrows move with the mesh. However, when I render it, the eyebrows remain in the default position. Any ideas on how to remedy this? Here is the ...
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How to get rid of this distortion/heat waves in cycles animation render [duplicate]

I am very curious right now. I wanted to render a video about lights and there is that weird glitching heatwave everywhere where it's dark (look at the top around the orange object, dark sides are ...
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Render looks flat compared to view port camera

Did a landscape scene with TXA LANDSCAPE add-on in blender. The mountain looks fine in the view port but when I render the scene it looks like a pyramid or the shape it looks like. I am a beginner and ...
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Why is my Poliigon Metal Material way darker than its material preview?

I'm kind of a new to this whole render thing - I'm using some of Poliigons metal materials -Metal Stainless Steel Brushed 002 4K. I can see the dents and brushed metal textures but the "base"...
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39 views

Blender denosing animation render

I have rendered an animation in cycles (I accidentally rendered it as mkv instead of an mp4) and I checked denoise before rendering and now that it is rendered it is very very blurry. I tried to fix ...
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27 views

Rendering Issues

I am having difficulty rendering my animation. The project file itself is pretty simple with the majority of verts being from a Blender Kit asset. The total amount of verts is rather low for a sene ...
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44 views

Strange transparency/artifacts when baking normals from a high-poly mesh

After adding a bunch of details (using KITOPS inserts, mostly) to a high-poly mesh, I've been attempting to bake the details of the mesh to a normal map for a lower-poly version. For some reference, ...
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84 views

Using Blender with Intel Iris Xe and OpenCL [duplicate]

I've been trying to get Blender working with my Intel Iris Xe GPU and I'm having some trouble. Switching to GPU compute with Cycles and OpenCL gets stuck on "Updating device" while the scene ...
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43 views

Lily Surface Scraper issue

I recently downloaded the Lily Surface Scraper add-on. I was excited to try it out. But when I got it working and tried to see to render preview, the hdri doesn't. However, when I remove the ground ...
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How can I add bubbles to glass shader without using particle system?

I created a glass object following this CGMatter's tutorial https://www.youtube.com/watch?v=Zu74ljrLz4w&t=124s Now I would like to add bubbles inside the glass, but since the glass object is a ...
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Normals create black spaces in Cycles but work fine in other rendering engines

I am relatively new to blender and recently learned to bake normal maps. I did this and it worked fine (It looks great in Eevee) up until I switched to Cycles. Now, either the normal gets misaligned, ...
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Cycles GPU render times vary extreme

my render times vary extreme.this happen often not once Same settings 256 tile size, 1000 depth. One time around 30 min the other time around 3 hours. The shorter time is often after I restart my pc. ...
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Every time I try to bake I keep getting these black artefacts

I am trying to bake all the maps into one color map using the combined bake option but every time these black artefacts occur. Can someone pls provide some help ASAP If done right its supposed to ...
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how can i speed up rendering [duplicate]

I've been trying to render my latest minecraft animation but it's taking a very long time to render, i mean ages(not actually just too long)so if you can teach me how to speed up rendering or even ...