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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18 views

Bake a giant UV with multiples materials and textures tiled?

I'm working on this project: I needed to bake the house structure, so I joined all objects, created smart uv project and started the bake. It succeded, but the texture result wasn't correct: The UV ...
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Blender 2.9 Cycles: Render issue with Alpha Masked Leaves on Trees

I recently purchased some tree models from Globe Plants specifically for Blender Cycles Render. I'm hoping to get a response from them directly but thought I'd ask if anyone else knew what was ...
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Unable to reduce Blender file size for render farms?

I'm hitting a wall here. I have a 185-frames-long animation that I want to send to SheepIt for rendering but no matter what I do the file size stays around 1,5-1,8GB and the upload limit on SheepIt is ...
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GPU rendering but task manager shows it is barely being used [duplicate]

The task manager shows I am barely using my GPU. In the render properties I've selected GPU convert. In the preferences>system I've selected CUDA and my GTX1080 is checked. The drivers on the GPU ...
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28 views

Why is my model rendered in Black

I ned suggestion for this material. I have a normal principled node with orange color. In viewport and lookdev mode it is orange but in render view, and when hit render, it shows as black. I have ...
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Image sequence texture to start play when a particle is born?

This is my first ever question here. tl;dr I need help with the particle info node to animate a UV map of a spritesheet, so it exposes different parts of it for each frame. I am okay with switching ...
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1answer
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OpenVDB file and Blender Cycles

i imported a open vdv file and render it but I looks blocky and has weird lines in the end render I didn't change any settings from the volume, what can I do to make it, well not look like garbage
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Modeling, Faces rendering wrong. --> bad Face Layout?

i'm about to build a house model and i wanted to reduce faces. Maybe i reduced too much. Faces are rendering bad. I checked the normals and they are all ok. As you see, there are faces rendering ...
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1answer
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Does fresnel node corresponds to fresnel-equations?

In principle BSDF manual,specular is set to ((ior-1)/(ior+1))^2/0.08 to get realistic result.So does this imply that reflection amount (percentage of incident light) is only determined by ior and ...
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Same frame, same settings give me different time render each time I render it

I'm lost, I'm trying to find the good light path bounces settings for decrease the render time and keep a good result, but with the same settings if I render the same frame many times I get different ...
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Black part when glass touches a surface

I've modeled a glass container with a very simple principled shader (see below). When the container is in contact with the floor, the lower part of the container turns black. (cycles render) How can ...
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Help me understand the viewport render pipeline with cycles

I am trying to understand the pipeline that creates a rendered image in the viewport with cycles from start to finish in the blender/cycles source code. A little bit of context (Skip if not interested)...
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Animation is still flickering with 64 samples [duplicate]

I did a short animation with 32 samples. It was flickering a lot, so I increased to 64 but still have some disturbances. Is there a way to clear it without increasing the number of samples? It takes 8 ...
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Camera tracking : Rendered image only render 3D objects and doesnt render the video image [duplicate]

I am new to Blender(2.9) ,I followed several Camera Tracking tutorials. But when I render my final image, it only renders the 3D objects and the video image doesn't get rendered.If I change the "...
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Weird double image in Cycles

I've been using a Death Star model from Battlefront II in a short clip i've been working on and today I noticed that in renders there's a double image of the Death Star, as if there's a translucent ...
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Why does my computer crash every time I enter rendered mode?

I work on a relatively old iMac (2015) and every time I enter rendered view in Cycles, the Mac just freezes. The mouse wont move and the keyboard is unresponsive. The scene isn't even that complicated,...
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How would I make a plane look defocused or blurry

I'm trying to make a product demo for a class and was wondering how to make a base plane look soft focused, like in this image. Would it be through depth of field or something else? I've tried depth ...
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1answer
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How to render in cycles like when you use backface culling in eevee

I want this model to render like this: this is done by using backface culling in eevee rendering. In cycles, however, it's rendering like this: I know there's a node set-up in cycles to recreate ...
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22 views

Texturing Big Walls

i got 2 Problems: I need to texture these bigger walls with a specific texture, only the floor gets an extra Texture. Can i uv map the faces individuali with a repeating texture? Using a Mapping node ...
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1answer
21 views

When I sharpen edges, why do I get random spikes?

Could someone please teach me how to get rid of these sharp spikes? It's really annoying and I'm not really sure how to go forward after this. Also, this only happens when I edge sharp. Thanks!
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13 views

Rendering RGBA height and normal map with Cycles

I have a Landscape terrain model, and I'd like to generate a 4-channel image with the normal in rgb, and a height in alpha. The height can either be normalized or not. I'm using the Cycles renderer to ...
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Blender Cycles keeps crashing when moving lights around in Viewport Shading

I'm fairly new to Blender, I haven't really used it at all except for rendering out a couple of projects since about September, so this could be something that I'm just not understanding... My setup ...
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1answer
27 views

Shading artifacts in cycles displacement

I'm trying to make stylized topographic maps in cycles using displacement with 10m resolution hight maps. An early issue I have is getting clean edges. Adding more geometry to the plane does not seem ...
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I want to make a procedural repeat texture [duplicate]

Is it possible to make an aligned or random repeating texture like this image? Would like to make in Cycles 2.83 or 2.9 Thank you
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Will Amd rx 6000s will be supported better? [closed]

I ask about rx 6000 series if it will be supported as nividia rtx graphics cards . As i think it deserve to be supported because of massive vram of the new radeon rx generation and rey-tracing ?
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28 views

Cycles render causes dark texture

I am very new to blender, creating my first 3D model, the donut. When I view it with cycles render it appears very dark, almost non textured. When I view it in object mode or eevee render it looks ...
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35 views

How to render an animation made with a python Script [duplicate]

I have a simpĺe python script that triggers an animation base on the location of a cube. ...
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26 views

weird lighting of a cone with eevee ( and cycles too )

super noob question here. I have created a very simple scene with just a cone, a light and a camera. The cone has a default white material and I selected "shade smooth" for it. The light is ...
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Render Animation with layers

I'm trying to render an animation using version 2.90.1, but my PC has no chance rendering it all at once, cant even get past the first frame without vram used up. I tried doing it with layers and I ...
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2answers
92 views

Why does the guard of my sword glow when it shouldn't

I am working on a final render for my little sword project I have been working on, but this issue perplexes me. Essentially, when I render the scene in cycles, the guard of the centre sword glows. ...
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20 views

Final rendering image with blurred red color

I am new to blender. Whenever my render finishes 100% it appears a blurred red on my image, that only happens at the end and while the render is happening everything is looks fine. Also, another ...
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0answers
24 views

Cycles textures render black

I have a problem with my interior design render. I use some textures on tiles (cuboids). And on one camera view they render textured, but on the other - at copied objects with the same material, but ...
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Low poly model showing on normal map in cycles, and normal map not showing on model in eevee

Title says it all. Both things are shown underneath, ive been trying to fix this for about 2 hours now and im on verge of giving up.
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2answers
38 views

Noise in thin gaps between meshes in cycles

I´m new at this and Im out of my depth. The problem is this: rendering in cycles, at some places of the model, specially in the thin gaps between different meshes (marked red), I get a lot of noise. ...
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24 views

How to Bake Texture Sequence in Cycles?

I would like to use EEVEE's Shader to RGB and Cycles's Fisheye Lnes Camera together. To emulate Shader to RGB in Cycles, I want to render texture sequence of diffuse passes that respond to the ...
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10 views

IES Texture not working

I actually dont know what I'm doing wrong, I am probably not seeing something. Link to file:
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10 views

Cannot enable or find option to enable GPU [duplicate]

i just started using blender recently and wanted to render an animation made with my gpu cos it was taking ages with the cpu. I went to user prefrences to enable the gpu but the cuda option wasnt ...
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35 views

Can multiple layer transparency be done in cycles for a single object?

I noticed that inside of the viewport display options for the object that they resemble the settings for Eevee render. I am trying to get the effect of unchecking this option inside of Eevee to look ...
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1answer
31 views

AO Bounces Render in BLender 2.9?

I was watching Blender Guru's tutorial on the subway and he mention that changing the AO Bounces would decrease the render time. He was on a 2.7x copy of Blender and I'm just wondering if that feature ...
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35 views

Weird reflections on glass bottle render with cycles

If you look at this PNG you notice this "reflection" near the bottom of this bottle. Why is that so hard? Where does it come from? from the bottle itself? I rendered it a couple of times, I ...
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2answers
64 views

how to decrease point light attention

I'm not good at english so I ask as simply as posible. I have two render in cycles and eevee. I wont achive in cycles the same effect like i have in eevee. I dont wont to light entire room. I try use ...
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It is possible to deform a plane with some modifier or technique

It is possible to obtain the same deformation result without having to use the fractal permanently, is there a modifier that allows me to obtain the same result?
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1answer
37 views

Glass is rendering black in cycles

I've tried multiple things now. Light bounces is set to 76 and caustics are turned on, bots reflective and refracitve. I don't know what else I could change. Also does anyone know how to render it ...
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Need Python script to render a Mantaflow domain (randomly accessed) sequence in an externally specified order from a defined camera path

I have a working animated Blender file that contains a Mantaflow domain and a camera path. The domain contains 15 states stored in a cache directory and the camera path (Bezier curve) has 180 ...
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Object with emission shows up in Viewport but not when rendered [duplicate]

In an animation I did where the camera flys around a fishing shack, there is a ball in the sky with white emission that shows up on in the Viewport but doesn't when rendered. Initially I thought it ...
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24 views

Blender crashes in Cycles viewport

I have very frequent crashes. I noticed they come as soon as I am using Cycles and one of theese things : ocean modifier, displacement, complex shaders, volumetrics, and complex geometry in general. ...
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10 views

Camera projection mesh doesnt affected by artificial light source like sun,point light,area light etc

Can anyone resolve this? I have done successfully camera projection in Blender 2.9..but whenever i tried to ad some lighting effects on the camera projected mesh,it doesn't affected at all.i do set my ...
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1answer
44 views

Blue line appears on the side of liquid after render

I can see an unusual blue line on the side of the liquid inside a cup after render. I cannot understand how to remove it. Check image: Notice the liquid carefully, you will notice a blue line in it. ...
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1answer
28 views

How do I solve the problem of black surface forming on an object with 0 alpha transparency adjusted in cycle mode? [duplicate]

In order to give the effect of disappearing the product through video, i made the alpha 0 in the cycle mode to give transparency. When I proceed the rendering, it's not completely transparent also ...
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0answers
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Understanding Memory Usage Whilst Rendering in Cycles

I am trying to understand memory usage whilst rendering in Cycles with a view to making good upgrade option decisions. I have a large scene which for my system is very heavy to render. I have 32 Gb of ...

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