Questions tagged [cycles]

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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Color not coming through glass?

I'm trying to do this tutorial to make the cup as shown in the video but I'm having problems with the glass and the color coming through it. the glass has light coming through it (Or it might be ...
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How to create a light source that casts shadows, but doesn't actually shine any light

I'm trying to create a "fake" shadow for my object because I don't like the natural shadow it makes from the lighting in my scene. I would like to create one light source that creates the shadow for ...
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51 views

Render Clean Diffuse Colour Only Blender 2.81

I'm trying to render an image with an output that is the pure diffuse colour only. In earlier versions of Blender I would have just used the internal renderer and created emission materials. But, in 2....
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I don't want to be transparent [closed]

I don't want to be transparent. What's the problem? It's a cycle lander. :(
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Why is my cycles render generating these weird lighting glitches?

https://youtu.be/CcjH_KlFI3A Why is my rendering generating these weird flares and flashes? I watched it render this and it literally rendered each frame perfectly 100% and then somehow glitched out ...
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1answer
20 views

Script to fix texture nodes after importing a file

When I import an fbx, it has image textures that should be linked from their Alpha socket to Principled BSDF's Alpha socket, but right now link goes from texture's Color to Principled's Alpha, like ...
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CUDA error at cuCtxCreate : unknown error

os : Pop!OS ver : Blender 2.81 device : nVidia GeForce GTX 1080ti every time my computer falls asleep with blender open, when i try to get back to my work i get this error and blender can't find any ...
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20 views

I can't see my objects in Solid mode, but I can see them in Rendered Mode

My object disappear in Solid Mode but when I turn to Rendered Mode they appear back but cannot select them.
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16 views

How to bake hair particle system onto the low-poly mesh texture

So I want to bake hair to the texture. I saw this pin Bake hair particle system to textured low-poly mesh , but it doesn't work out for me, can anyone please either make video based on that guide, or ...
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Crashing in Cycles “experimental” [closed]

Crashing in Cycles "experimental". On windows dual 1080's xeon chipset. Also experimental is much slower than standered which, from what I've read, should be much faster. Any thought?
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Cycles 2.81a not detecting my R9 270 as a rendering device [duplicate]

I searched for this problem already, and it seems people were having the same issue with older versions of blender. Is this card no longer supported by blender?
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Blender 2.8 Cycles render animation slows down

Update shader is taking longer after each frame. From 0s in frame 1, to 10s in frame 33 and so on. It's simple nature scene, each material has simple shader for alpha transparency (4 nodes). The same ...
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HDRI environment image not showing in final render

So i have a HDRI environment set up but when i render it in cycles i get just a blank white background, and to be honest it doesnt even look like the same lighting? Using 2.8
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cant see the objects on cycles viewport [duplicate]

For some reason I cant see my objects while I am in Cycles Rendered Viewport. There is ligth in the scene, I can use Eeve render viewport, and I can run renders in both Cycles and Eeve, but suddenly I ...
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1answer
15 views

part of material not showing up in render

I'm pretty new to blender. I want to make a silver ring with the "925" stamp inside. I realized the stamp via a bump map (black and white image from Photoshop). That map drives the darker color as ...
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1answer
28 views

Text Render a bit noisy, even at 200 samples

I can't seem to figure out how to get a sharper text render that I am using for my animation. Here are the Things that I have tried: 1: Increasing Samples to as high as 300 2: Turning font shadow ...
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26 views

Cycles Volumetric Lighting Render Issue (2.81)

I have a simple volumetrics setup for a nebula-esque scene. Now, the render has to loop, so I used multiple boxes with the same noise textures in them. In Eevee, this works great, but in cycles, each ...
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1answer
33 views

How do I add grunge & rusting texture to a pre-made material? [CYCLE] [duplicate]

I am working on a nature scene where there is a car due to nature it gets rusted and rather by time it gets old. I want to add grunge and rust texture. I had bought materials plugin a while ago, so ...
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Which is better multiple weak GPUs or a single strong one?

Assuming all GPUs have the same vram Does having multiple older GTX cards out perform a new single strong RTX card?
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Lamp casting only on its own collection

Back in the 2.7x days, I seem to recall a feature for "this layer only," leaving lamps and things only affecting the layer they were on. In 2.8x, of course, layers have been replaced with collections....
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27 views

photo realistic sss skin shader… i need a great node setup

So i was looking for a great node setup, heres my results so far and my node setup. I was wondering what i was doing wrong because it doesn't look good, also i know light setup is important but for ...
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1answer
64 views

I don’t think cycles is working

So last night I was trying to make a crystal structure like the one in ducky3d’s video about fantasy crystals. I am very new to blender so bear with me. The transparency doesn’t work and I never see ...
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camera_to_view_selected() only selects a small section of the object in a script, works fine when I manually use the console

Here is the code I am using (in a python script): ...
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1answer
17 views

Rendering ocean scene, but ends up as a cube

I am new to blender, and I am trying to render my animated ocean scene. However, when I render only the cube I started with is visible, not the ocean. And the cube does not show in my viewport. Any ...
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1answer
47 views

How to blur my hdri? [duplicate]

There're some videos doing this however its older versions and some nodes don't even exist anymore. Blur is gone and so subtract. I have no idea how to blur my hdri. Even tried photoshop but when i ...
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1answer
50 views

Lego Walkcycle Sliding Problem

i have a problem. i want the lego-minifigure to walk without sliding. I tried it with a rootbone and a path but i always get sliding. i also tried offset- walking, but it did not work. what else can i ...
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1answer
129 views

how do you render displacements in cycles?

i was hoping someone could help me figure out why my rendered image doesnt render what the viewport sees. the first image is of the viewport and the second is the actual rendered image. any idea whats ...
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19 views

remove artifacts from transparent image

I'm trying to render an image using cycles and my rendered image has these background artifacts that look like lines. These lines match up with the extent of the picture. I made both images (the one ...
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Blender Render Animation does not match Viewport Render Animation duration

I used Viewport Render Animation to see my animation and edit it in premiere pro so that my group could score it (add music). Now that I've finished rendering it, the final Render Animation does not ...
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Blender 2.8 - Lighting issues with cycles in viewport [duplicate]

I'm having issues with my scene not being properly lit in the 3d viewport when using rendered viewport shading. I'm using the cycles engine with an NVIDIA GeForce GTX 1080 graphics card. Has anyone ...
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1answer
63 views

Blender 2.8 - Cycles - Math (Sign)

I have worked on plenty of Math operations within Cycles without the need to use GLSL. The only operation/function so far that I Can't figure out however, is Sign. Basically, this operation will ...
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1answer
41 views

Having trouble adding brick texture

I have appended an old house building to a scene that was made using blender engine, but now in a cycles scene. I have attempted to add a brick texture to the house but it won't show. I am new to ...
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17 views

My LEDs disappears when changing from Eevee to Cycles

I'm totally new to Blender 2.8 and trying to learn from Youtube videos. It is going well, but I have this problem. I have some LEDs (imported as STL files) and they look okay when the render is set ...
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21 views

Is there something like a stretch or deformation Map?

Working on some procedural materials and wondering if there's some way to get a sense of how much an area has been compressed or stretched from some resting position. Ideally this would be a vector ...
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1answer
42 views

Alpha in Cycles isn't totally transparent, possible Mix node issue

Having a rather frustrating and nearly impossible to search for issue with transparency in Cycles, specifically a dark outline around the texture as you can see in the included images. I seem to have ...
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1answer
25 views

Blender 2.81's render device set to GPU doesn't show the viewpport render

So I was tweaking my node setup in the world background when suddenly everything turned grey. I tried to undo the steps but nothing changed. A bit later, I switched my rendering device to CPU and it ...
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22 views

Can't see HDRI in cycles/eevee in blender 2.8

I don't know what happen, I don't know if i just have a deactivated a node or an option.
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0answers
25 views

Invisible / transparent source of light. How to turn on?

Something happened and the light source is no longer visible to me, how to make it visible again? Light falls, but the source is not visible. If you make an object and apply the emission shader - ...
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13 views

How to link image in uv image editor using Python? Blender 2.66

When loading image in Image_Texture node using blender, it's linked there by itself (img below), but not when doing it with Python. I want linked images to be seen in 3d view.
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17 views

How can I make whole scene emit light

I;m using nodes to make all objects emit light, it worked before but i have changed something, i'm not sure what and now the only object emitting light is the chopper blades. I want the grid and the ...
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1answer
27 views

Cycles Render - Glass Shader: Some faces are rendered black

I have this problem with blender. I have created a mesh consisting of around 400 vertices. In Cycles Render I added a Glass Shader and connected the "Generated" Output of the "Texture Coordinate" Node ...
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11 views

why texture rendered normal in eevee, but rendered as transparent in cycles ?

Anyone knows how to rendered normal in cycles?
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40 views

Procedural material broken in 2.81

How it's meant to look^ I downloaded this wonderful procedural shader setup by Elbriga, which has worked fine in Blender 2.8 – but when I got the new 2.81 version the material preview is broken for ...
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1answer
36 views

FlipFluids & Ocean modifier as displacement. Baked frames in 3D view show all movements but rendered animation not. Manual keyframe ok. Any solution?

I have created a FlipFluids simulation in Blender 2.81 ( 2019-11-25 21:45) and added an Ocean modifier in displacement mode to the fluid_surface. Then I have baked the complete sim from within ...
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1answer
51 views

Create mask for half of sphere

I'm trying to create a rotatable mask for a sphere which I can rotate around the sphere using the mapping node. My aim is to make it look as though the sphere has a bright light shining on it (like ...
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1answer
51 views

Textures don't show in 3d view after loading them into node via python. Blender 2.66

Textures don't shows in 3d view after loading them into node via python. I can see them in render mode, but not in edit. Also after selecting image texture node they show-up in 3d view, but I can't do ...
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1answer
30 views

How do I import An image with transparancy [duplicate]

So im trying to render my minecraft 3d skin but the hat it not being transparant
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0answers
31 views

How could I create a sand dune animation?

I've been working on creating a whole bunch of nature animations and one that I've been trying to create is the "windy desert". Is there any way that I could simulate this in blender. To be more ...
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1answer
30 views

Water droplet particles appear dark and muddy (2.8)

I made a particle system on this can to make it look "sweaty" but the water drops are far too dark for me. Is there any way to make it look clearer/lighter/more reflective?
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Is there a way to bake volume density information which is generated from an OSL script?

I am trying to generate volume density information (e.g. a mandelbulb) from an Open Shader Language script in cycles. This however only works when rendering with a CPU. My GPU is much faster but doesn'...