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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Emission material changing global lighting?

I have a animation to do where a Emission material turns on and off quickly, but in my demo here https://pasteall.org/blend/b615db2696c749bd9c1bb5e97e6274db it seems to be changing the global lighting ...
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Shader-based fog without using volumetrics

I need to create a scene with fog, i.e. distant elements faded out towards gray. I can't afford volumetric fog, because the renders would be way too slow. I'd like to just use a simple camera-to-...
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Is there a way to allow colorramp silder color to have group input group?

I already asked this question here. Is it possible to have group color input slider in Color Ramp Node? That's exactly what referring to, and yes I tried that and it doesn't help here. You can add ...
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How to expose the hue of a Color Ramp node inside a node group? [duplicate]

I'm making a material in which the color in the Color Ramp Slider changes the color of the fabric material. Because I'm using noise texture to generate patches of 2 different colors, I'm unable to ...
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Cycles Final Render is Black in Blender 2.91.0 [duplicate]

I need some help with one of my Blender projects. I was making this simple interior design render with the help of fspy. I made some simple objects and some materials. I didn't check before if I can ...
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Ceramic texture looks right in evee but not cycles

So I'm trying to make like a ceramic matcha bowl and I think i found a way of making a nice looking ceramic texture but it's not displaying right when I render it in cycles it looks like it lost all ...
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My smoke render (cycles) looks a lot worse than in viewport

This is how my smoke simulation looks on render... More like transparent water... This image is from the viewport. There it has nice puffs. Why are they disapearing in render? Here are the settings:
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Smoke artifacts in render

I have a strange issue rendering with Cycles. These are some rendered images: As you can see there is a change in color/light around smoke and expand with smoke. Based on similar problems I've read, ...
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Correct physical refraction

In Blender 2.92 Cycles, I'm trying to model a quartz prism with physically correct refraction of a beam of light cast by a narrow slit (not worried about the color dispersion yet). But when I render ...
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Washed out texture in render compared to tutorial

Still very new to Blender. I am trying to follow one of the old Andrew Price's tutorials about loaf modeling. Well, long story short, while I am using a texture provided for the tutorial it looks a ...
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1answer
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Why is blender rendering entire tile?

As you'll see, my blender is strangely (i think) rendering the image as an entire tile and not a "one by one tile". I'm using GPU (if using both GPU and CPU it shows the tiles). I'm also ...
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bright squares showing up when rendering

I want to render something, but these random squares show up: Here are some of my render settings: (If you want to know another setting, just comment and i'll post it) Thanks Daniel EDIT: I fixed it ...
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Adaptive Subdivision eating RAM incorrectly? Fails all GPU renders regardless of settings

I've been working on an animation project for months now, that started in Blender 2.8. The animation includes one photo-real character that I am using a Displacement Map workflow for pores and small ...
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Blender Misaligned address in CuCtxSynchronisze

I'm a beginner blender user. I'm trying to render this simulation but almost every time I render it, it will stop rendering at some point in the render and show the "Blender Misaligned address in ...
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1answer
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Cycles 'vector' pass meaning of W, X, Y, Z

I have a scene with moving objects and I want to extract the optical flow (apparent motion as seen by the camera). I am using Cycles. I include the 'Vector' pass and save the result as 'OpenEXR ...
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Issue with glass transparent render?

Im having issue with the back long bottles. When the back bottles are hidden i cant see the green bottle shade When the bottle are visible i can see the green bottle through the seeds or the pulses. ...
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Rendering problem with volume

While rendering this problem occured: You can see, that cycles rendered differently on some parts of the file. There is principied volume box in the scene and denoise. What's the possible solution ...
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How to force Cycles to use a not supported GPU which is already getting used during EEVEE rendering

I wonder if any of you have tried such a thing before. I'm temporarily not home and the thing with highest computing ability in this house is a GeForce 820M GPU. I heard that it just kicked out from ...
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What's the easiest way to get as close to cycles as i can on Eevee? [closed]

Simple question, While tweaking with the render settings, I had noticed that compared to Cycles, Eevee looks kind of... "flat". i.e. Eevee: Cycles (preview render at 3 samples) : The ...
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1answer
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probabilistic termination of transparent bounces

From Cycles documentation about Light Paths: The maximum number of transparent bounces is controlled separately from other bounces. It is also possible to use probabilistic termination of transparent ...
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How do I set specific parts of a mesh as outflow and have other parts just an effector?

I'm trying to do a fluid sim and I want to have certain parts of a mesh/object as inflow, and others as outflow. I'm just trying to set some of the faces as inflow and the rest as effector or ...
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GPU Rendering Issues (OpenCL, blender 2.92)

I'm trying to render a moderately complex scene, and I'm really struggling to get my GPU to behave. Currently using an rx 5600 xt w/ i5-9600k, amd driver 21.2.2 (outdated but more stable w/ blender as ...
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1answer
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Blue Stuff in my render [duplicate]

I was rendering this scene (on cycles) to test out the lighting in my upcoming animation project but for some reason the render had blue stuff all over it, I tried to see if it had to do anything with ...
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Bake Diffuse texture color wrong shades

I'm still fairly new to Nodes/texturing. Had it baking correctly until I Appended the material into another model that needed the same treatment. Realized I had changed and saved some of the node ...
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1answer
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My PBR Texture looks better in Viewport than in the Render [duplicate]

i'm rendering an Image of Bane's Mask in Blender. Its on a wet road, which looks high-res in viewport. This road looks very flat and dry after rendering in Cycles. Viewport result: Render result:
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How can i use OpenGL/Viewport render in rendered mode on cycles?

Whenever I do it on Eevee, it works. and I find it to be a great way to render faster, but whenever I do it on Cycles, I just get nothing besides a grey screen, Help? My render settings are on the ...
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Is it possible to reduce light emission to some directions?

Currently, I have a scene like this - But I'd like the lights to look brighter and see the actual rays, instead the space between green ones darker. It is possible to change the glow effect in the ...
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blender is not using 1050ti GPU for cycles render

I have updated blender to 9.20 but after updating blender is not using 1050ti for cycles render. I have configured it in preference and using experimental feature but still my GPU usage is 0% and CPU ...
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Cycles Render CUDA cores usage 0 to 100% spikes slow down render

I spend a huge amount of time rendering and if this is fixable, I would love it. My machine has dual RTX 2070 supers. In the task manager, on the GPU pages, when I set it to show CUDA usage, the ...
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Recreating colored glass shader from VRay/Max to Blender/Cycles

Edit: Blend file: I am converting a somewhat simple scene from 3DSMax/VRay to Blender/Cycles. I'm almost done with the conversion, but I am having trouble with matching the glass shader used in the ...
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How to get rid of sharp edges\artifacts in Cycles?

So I imported a model of my sim into blender to mess around with renders and maybe try and make some CC, but (as usually the case with game extracted models) the model has these 'artifacts': How do I ...
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Settings or manual for temporal denoiser

I am looking for a manual or documentation or a way to change settings for the temporal denoiser for animation as described in this question: How to denoise animations using Blender's Temporal ...
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Rendering problem: Messy render

What could be the cause of these rendering problem? I use Blender 2.82. And I tried everything I know to fix it but the problem still persist. Anyone can help me about this? thank you. I use cycles to ...
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One of my objects won't show in my F12 or final render [duplicate]

I've tried to render my scene but there's an object that won't show up. I've checked the camera, I've checked the visibility, it isn't hidden and it's showing in the viewport. I feel like I've opened ...
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How to create this marble paint effect with blender texture?

How to create this marble paint effect with blender texture?
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Is it possible to maintain the last image of the baked fluid simulation as a still? [duplicate]

I made a fluid simulation for fog (frame 1 to 10), and I want the fog to remain as it is at frame 10. I'm animating something else in the file until frame 260, but I want the fog to remain as it as in ...
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No immediet effect when switching between rendering modes, Eevee and Cycles [duplicate]

[When taking photos on Cycles, it renders it in Cycles, but I can't see how it looks until it renders.
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1answer
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Eevee render output is black. But it appears in cycles. What I did incorrectly during adjustment? [closed]

Till half way of my process, all was good. I was able to produce images but now all I get is black images. Checked world environment and lightings too. No luck. Can anyone please tell me what's wrong? ...
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1answer
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How to render flat shading just like LookDev in Blender?

I'm making graphics for a tile based game that has 2.5D look. I am making most assets in blender, and everything works out great, except for the walls, that have to have seamless tiling. I am using a ...
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Getting hard shadows through glass material

I am attempting to emulate what's seen in the image below: I have an indoor scene that's fully surrounded by walls. The only way in for light is the glass skylight at the top. When I render the ...
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1answer
35 views

Smoke Effect Colors Overly Dark and Gray When Rendering with Cycles or Eevee in Blender 2.92

I tried to make a multi colored smoke effect because it looks cool. Unfortunately, this feature only seems to work with Workbench Render Engine while in wireframe view. Indeed, once I try to render ...
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Very bad rendering in Cycle Viewport

I am new in this community and also as Blender user. I am working with Blender 2.91. I have probably typed by mistake on a shortcut or changed a setting, ... I have now a very bad rendering result in ...
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Cycles viewport is dark compared to EEVEE

When I look at my scene in the EEVEE viewport everything appears fine. But when I turn to cycles, everything turns grey (total silhouette, no light whatsoever) unless I am looking through the 3D ...
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Why are my hair particles rendering like this?

I'm pretty sure at the beginning of working with the hair, it was spiraling around the face strangely, but now the strands will only render as strange particles. This happens even with a brand new ...
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How to use StringProperty and PointerProperty to bind the attributes of the shade node from the world(ID) by Python?

I'm writing an addon to allow users to input custom hdri maps as a environment map in blender. It's a bit different from general shader from object context,which you can bind the parameter with...
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How can I make a desert with sand that interacts with a car?

I want to make a scene with a car in a desert, starting off on pavement then going to sand. How could I make the sand "kick up" behind the car, on the pavement and on the sand? And is it ...
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1answer
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Cycles renders alpha channel in black and grey instead of black and white

I have a lighting setup with an HDRI map and a few supporting lights. When I render my image, my alpha channel is grey and black and I can also see that my cryptomatte channels are semi transparent. I ...
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PNG with alpha casting strange shadows depending on viewing angle (Blender 2.91.0)

I have a RGBA png and i want to render it infront of a plane, but when i do, it casts weird shadows on the plane, the strange part is that the shadows only exist and change under certain viewing ...
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1answer
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Why 38000M peak when trying to render image [closed]

When I am trying to render an image with 32 samples the peak M gets to 38000 and the crashes with CUDA error for not enough GPU memory. We just bought a new computer Rtx 3070 32 ram Cpu AMD ryzen 9 ...
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2answers
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How to correctly enable Cycles from add-on?

My add-on requires Cycles to be enabled as I append some classes to existing Cycles types at registration. I made a function to check if Cycles is enabled: ...