Questions tagged [artifacts]

questions about strange visual discrepancies in renders

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8
votes
1answer
716 views

How would I fix this awful artifact shading?

I was making a gun model and couldnt figure out how to fix the awful shading on my models front without changing the detail of the model and Ive already tried [ Set from faces ], [ Average faces ] and ...
6
votes
1answer
144 views

High start clipping causing dashed edges in 3d view?

I read up that issues sometimes occur with a too low start clipping distance, and since the model I'm working on is pretty huge, I set the start clipping to 1 blender unit. However, I noticed that the ...
5
votes
1answer
2k views

Shadow terminator artifacts issues

I work with Blender 2.81a and I have a problem with some artifacts in the shadows of objects with smooth shading. Based on the release note of Blender 2.81 ,(https://www.blender.org/download/releases/...
5
votes
1answer
712 views

Smoke hi-res fire artifacts in Cycles?

When rendering smoke/fire simulations with cycles I sometimes get some random lines/artifacts on my render. Do you have any idea what might be causing this? There are also some issues with ...
5
votes
1answer
287 views

Object not rendering smoothly - Can see where it bends regardless of how many loops cuts I have

I'm making this shape which is just a cylinder with a curve modifier on it. I can't seem to figure out why you can see the subtle bends in the cylinder. I've rendered it multiple times with varying ...
4
votes
2answers
3k views

Smoke Simulation has weird artifacts and looks low res

I can't figure out why my smoke looks like this. It has weird artifacts and looks like it was rendered on 144 resolution. This was actually rendered in 2560 x 3840. I also used 400 samples and I'm ...
4
votes
1answer
1k views

Weird artifacts appeared in eevee because of normal map

I'm was working on a shotgun and suddenly for some reason some weird artifacts appeared on the metal materials. I know that removing the image texture and leaving only a noise texture+bump on the ...
4
votes
1answer
672 views

Why does cycles' volumetrics leave stepping artifacts?

When I render out my rather sharp volumetrics, I get the kinds of artifacts shown in the images and links below. They are obviously produced by step size, and samples stepping through the volume, and ...
3
votes
2answers
778 views

Mesh artifacts only on render

I am making my phone in Blender and my mesh has weird artifacts on rounded corners only on render, not in viewport. Removing doubles and flipping normals doesn't help. I thought it's releated to non-...
3
votes
1answer
172 views

How to get rid of defocus node artifacts?

When compositing my render with an alpha over node to be able to edit my background and my foreground separately, if I use a defocus node to give my image some DOF, I always run into those weird ...
3
votes
2answers
2k views

Distorted normal map on smooth surface

Blender rookie here. I'm learning about baking normal maps in 2.80 with some pretty basic setup. I'm getting strange results on a smooth metallic flat surface. You can see it on the following ...
3
votes
1answer
311 views

How to fix an artifact affecting a bevel modifier

This is me yet again. I am trying to work non destructively with the use of bevel modifier. I managed to bevel only by weight and adjust the weight of desired edges. However, now when I try to ...
3
votes
1answer
39 views

Advice on dividing and unwrapping this mesh

I'm working on a project with several objects like this and they are causing me a lot of frustration. I'd like some advice on the best way to divide faces and unwrap an object like this. I've tried ...
3
votes
4answers
593 views

How can I make transparency act as expected with the internal renderer?

Seems like a z-buffer issue. Everything seems fine in the material preview, but in the render the sky (or transparency, if no sky) "bleeds" a pixel or two between the intersecting part (intersecting ...
3
votes
0answers
299 views

Artifacts when rendering irregular mesh in Cycles (black lines)

when I render with Cycles any mesh (specially planes) with a bit of irregular shape (by using previously, for example, a displacement map) some black lines appear on it. Those black lines are not ...
2
votes
2answers
2k views

Subdivision Surface Artifacts / Topology Issues?

I am trying to create an archway and getting this little artifact with subsurface. I've tried a few things, moving some geometry around but unable to get rid of it. Any insight as to what I need to do ...
2
votes
2answers
46 views

Blender topology artifacts from cutting

I am making a pumpkin (based off the Grant Abitt tutorial) and am getting artifacts from the hole cuts. Ive tried fixing the topology but I'm not very good at it. Can anyone give me advice for how to ...
2
votes
1answer
235 views

Weird artifacts in shadow when rendering transparent objects

I'm rendering a transparent cup with water + transparent plate. However, the right bottom part of the shadow seem quite off. It has artifacts in the shadow. https://imgur.com/a/djoP72f This is the ...
2
votes
1answer
520 views

What's causing the colorful artifacts?

I've been using Musgrave textures for years, but in 2.79, I am getting some ugly artifacts along the edges of the object. It doesn't happen in the preview render, only in the final render. Is anyone ...
2
votes
1answer
166 views

How can I make adjacent object meshes seamless?

I have a character mesh where different parts of the body are separate objects (body, head, mouth) but the vertices line up as if it could be a single mesh. I am getting shading differences between ...
2
votes
2answers
1k views

How to reduce artifacts on curved text/vector [duplicate]

this is a problem I face a lot when working with branding and typography. After importing vectors/typing, extruding and bending (simple deform or curve modifiers) it always come up with those ugly ...
2
votes
1answer
384 views

Vertical Line Artifacts in Blender Cycles 2.83

just got Blender 2.83 today and noticed these weird artifact lines in my cycles renders. It happens in the render viewport, and in final renders. It only happens when I use GPU acceleration, CPU is ...
2
votes
1answer
586 views

Shading Issues with the Array Modifier

I'm working on a model of a car wheel. However, before I continue, I want to fix some shading issues I am having. My model has Subdivision surface, Mirror, and Array modifiers, which make up the 10 ...
2
votes
1answer
173 views

Blender boolean modifier difference make distorsion

I'm trying to create a difference between two objects. Let's see my object below : As you can see, I get a really bad result. I would like to show you my shape before applying the boolean modifier. ...
2
votes
2answers
404 views

strange artifact when rendering volume

I'm using a volume scatter shader to render an atmosphere for a planet. To save on time I used a spherical gradient and ran it through a color ramp to get white only on the rims of the sphere. This ...
2
votes
1answer
3k views

Yellow artifacts when baking normals

I've been searching and trying a few things for the last couple of hours and I can't figure out why there are yellow spots showing up on the normals when I bake them. Originally the wings had the same ...
2
votes
1answer
30 views

Artifacts after the Boolean Modifier

Greetings dear 3D artists! I am trying to create a shape to organize a collection of PBR materials. I add a UV-Sphere (Segments: 128, Rings: 64). Then I apply the Solidify Modifier (Thickness: 0.25 m)....
2
votes
2answers
612 views

Blender artifacts when zooming out

I facing the problem that I get artifacts around areas where polygons are close together when zooming out: this is also visible in rendered shading. It seems like some of the polygons disappear: This ...
2
votes
2answers
257 views

Artifacts / Darkening while baking

I created this crate for a game I'm working on, I've been trying to bake my wood pallet texture I have but every time I try to do so my bake comes out having artifacts and the material itself darkens ...
2
votes
1answer
1k views

Strange texture paint artifacts

I'm trying to paint on my 3D model. UV's are unwrapped with no stretching. Texture is 1024x1024 with alpha. Brush has alpha check as well (I've fiddled with all the brush settings, couldn't find ...
2
votes
1answer
499 views

Cycles hard edges in retroreflective material within a face

I have a problem with a retroreflective material in Cycles. When i render my scene it seems that some faces get rendered differently. The scene contains only one lightsource in form of an emitting ...
2
votes
1answer
667 views

Final render different than preview, black artifacts appear

Update: Added edge split modifier, now it works. I don't understand any of this. I'm going crazy over this. Tried rendering in 2.75 and 2.76b. Same result. I have this piece of a sword that just ...
2
votes
0answers
56 views

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, ...
2
votes
0answers
305 views

Car Modeling Subsurf Modifier

I am now trying to model my first sports car in blender. I am pretty happy for the first attempt, but I have a few problems with keeping some edges sharp and subsurf others. Currently I am using an ...
2
votes
0answers
192 views

Why Transparent BSDF blocks reflections of Principled BSDF? (Cycles)

I wanted to share an issue related to Cycles shaders I don't really know how to face. I am rendering a honey pot. Nothing crazy about this. But when I tried to add the sticker I noticed some ...
2
votes
2answers
968 views

Strange, indescribable color glitching near edges when using viewport shading in Blender 2.8

I am new to this website. I've been having a problem with viewport shading after installing 2.8. I am trying to make a VHS cassette (for no particular reason), but I have a problem that hasn't been ...
2
votes
0answers
509 views

Blender 2.80 displacement texture bug(?)

I thought I better seek help from others to make sure I'm not making a user error here before placing a bug report. In using greyscale displacement maps (textures) in blender 2.80 I've noticed ...
2
votes
0answers
408 views

Edge smoothing problem with solidify + bevel + subsurf

I have started learning blender and I have run into a problem when using solidify, bevel and subsurf together. The problem is that the inner edges of the windows in my object have artifacts: I want ...
2
votes
0answers
789 views

Strange result from baking normal map

I can't seem to figure out what is happening here. A bug possibly? I went from a normal bake result to this. The only thing that changed between the two bakes was the use of a mirror modifier on the ...
2
votes
0answers
66 views

Getting black spots in blender render, render [duplicate]

I'm using Blender 2.79. I've looked at a number of possible answers on this, but none seem to help solve the problem. I'm getting these weird black specs in renders when using blender render. I've ...
2
votes
0answers
960 views

Normal map artifacts in Substance Painter

I am getting artifacts in my normal map when baking high poly to low poly in Substance Painter. I already discovered one thing that can cause these is that the high and low poly objects match too much,...
2
votes
0answers
433 views

Rendering pixel-wise normals as RGB colors - artifacts

I am dealing with the following problem. I have a fixed camera and the mesh representing a surface. I use the cloth simulator and wind source in order to generate various shapes of the mesh. For each ...
2
votes
0answers
73 views

How can I get rid of these artifacts in blender internal? They appear on mesh with subdivision-modifier and lamp with raytraced shadows

When using a lamp with raytraced shadows active, artifacts appear in the shadows on the mesh IF the mesh has a subdivison modifier in the stack. But if I apply the modifier and re-render the ...
1
vote
1answer
56 views

How do I get rid of artifacts on boolean text?

I have taken 2 letters and combined them with a boolean, but now I get these artifacts everywhere. I tried using ⌘ Cmd + R to add parts, but that made it worse (some faces dissapear). How can I make ...
1
vote
2answers
174 views

Render Layers causing pixelation

I used this answer (Prevent shadow on object/material A, allow for object/material B) and it helped me a lot. However, this method is causing these jagged black pixels when I am combining them. What ...
1
vote
1answer
307 views

Checkerboard Artifacts when Sculpting

I am working through a tutorial and modeling a couch. I'm at the stage where I have been sculpting in fabric details and wrinkles (I am not using Dyntopo). I've noticed that when I sculpt with ...
1
vote
1answer
65 views

Is it possible to get rid of these shading artifacts for a smooth shaded flat surface?

I am modeling a logo and want beveled edges that will be smooth shaded to look rounded but a flat surface that looks flat do you have any sugestions? This is the result after beveling edges:
1
vote
1answer
53 views

Artifacts on cube after modulo on coordinates

This happens with the following node configuration: It is caused by the modulo (or Fract) operation. I stumbled upon this problem while trying to repeat coordinates on a cube. It works fine on a ...
1
vote
1answer
2k views

Exported model from Blender has holes when imported in Unity

so I have a problem with exporting. I finally have gotten myself to pick up Blender and this is my first attempt at a low poly model created from the ground up. And in blender it seems to render just ...
1
vote
1answer
65 views

artifacts on all my objects

All my objects in all Layers have these kinds of artifacts, anyone know why that may be?, when i hit "P" to play blender game they dissapear, but its super enoying to work with when you are texturing ...

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