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Questions tagged [artifacts]

questions about strange visual discrepancies in renders

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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/...
SebDev9's user avatar
  • 109
2 votes
2 answers
2k 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 ...
arvere's user avatar
  • 703
2 votes
1 answer
577 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 ...
MeshHead's user avatar
1 vote
2 answers
353 views

How to subdivide this n-gon shape to avoid artifacts?

I have this object which I filled with flat N-gon faces such as this highlighted face. And then I raised it using Propertional Editing. As expected it would ...
Harry McKenzie's user avatar
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5 votes
1 answer
831 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 ...
DeinFreund's user avatar
1 vote
2 answers
2k views

Pixelated shadow appearing in Cycles when using bump in node editor

I have a fairly simple scene with two cubes and a sphere on a plane. Each of the items has an image texture applied to it and a point lamp provides illumination. The sphere has a slightly more ...
Nathan Osman's user avatar
  • 1,423
3 votes
2 answers
472 views

Strange line artifact in a mesh

After merge the leg points with the body points I get this strange line in the intersection. Why? This is the mesh: This is the effect with shade flat: And this is the effect with shade smooth: ...
aitor's user avatar
  • 439
3 votes
4 answers
730 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 ...
Leo Ervin's user avatar
  • 662
2 votes
1 answer
576 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 ...
Ryan Fong's user avatar
2 votes
1 answer
4k 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 ...
Geo's user avatar
  • 21
1 vote
1 answer
1k views

prevent z-fighting between billboard particles?

In an effect like blossoming flowers and many other particle effects the z order of individual particles doesn't really matter, so can I tell Blender to make them stop z-fighting and causing ...
Leo Ervin's user avatar
  • 662
1 vote
1 answer
2k views

What can I do to get rid of ugly triangles

I have a problem with baking textures and ambient occlusion. Weird triangles and artifacts appear at end of process. I have tried (i think) everything on internet like soldify, triangulate faces, ...
GRG's user avatar
  • 13
1 vote
1 answer
2k views

Visual artifacts showing up on decimated model set to "shade smooth"

After decimating my model I end up with many long triangle faces all sharing a vertex: When rendering, these regions show up with strange artifacts: If I set shade flat for this model, the artifacts ...
jminardi's user avatar
  • 145
1 vote
1 answer
604 views

Baking emission in Cycles makes line artifacts

I started texturing my model and I noticed that all the procedural textures I made by plugging them into Emission and backing it using "Emit" have weird lines and dots. These artifacts do ...
NeNikitov's user avatar
1 vote
1 answer
784 views

Shrinkwrapping moiré-like artefacts (blender-osm)

I'm having issues with getting a water polygon imported through blender-osm add-on to properly shrink-wrap on the corresponding terrain. Here is what the artifact looks like (the black moiré-like ...
Lucien S.'s user avatar
  • 171
1 vote
2 answers
3k views

Rendering issue: light artifacts [EEVEE Blender 2.81A]

I am trying to render an animation scene with a volumetric effect in EEVEE. As shown below, some frames contain light artifacts in form of white spots with a touch of RGB on the sides. They seem to ...
Adam's user avatar
  • 21
1 vote
0 answers
2k views

artifacts in baked normal map(cycles)

trying to bake normal map from high to low poly mesh result have artifacts 1- it not smooth 2- it have some weird colorful areas what I did wrong? need help :(
Rumen's user avatar
  • 133
1 vote
0 answers
253 views

How to avoid mesh anomalies after Knife Project

Using Knife Project to have some windows and doors in an aircraft fuselage, however the cut produces these anomalies around the window corners, where the triangulation is, that I cannot find a way to ...
mrborzoo's user avatar
0 votes
0 answers
1k views

Boolean union not working properly

Whenever I try to use a boolean operation to union two objects together strange patterns appear on on the object selected in the boolean modifier, it also affects any material I try to hide it with ...
Hound's user avatar
  • 1
0 votes
2 answers
90 views

Grey artifacts in glass bottle

I am using Cycles render engine. The glass material has a color of full white, roughness of 0 and an ior of 1.5. I was on a different forum given the suggestion to increase max bounces of the scene, ...
AndreasRetz's user avatar
0 votes
1 answer
230 views

After "with automatic weights", nose became weird

After "with automatic weights", nose became weird. Why is this happening? Here's a video that shows the problem: https://youtu.be/1izcoGULxDo Here's the .blend file: https://www.dropbox.com/s/...
8piece's user avatar
  • 121
0 votes
1 answer
437 views

Reflections showing wave pattern after adding plane

We actually it is quite hard to describe my problem with only using words. 1 My problem is this weird wavy contour. Without the plane underneath the can, the reflections look fine (like in the bottom ...
Asder Knaster's user avatar
0 votes
1 answer
4k views

Low poly mesh/Oddly sharp edges on normal map where it is supposed to be smooth

I was wondering if anybody could help me with this problem I'm having with all my models/normal maps. As you can see, it mainly happens on the handles[the handles of a knife model]. You can still see ...
LSman's user avatar
  • 1
0 votes
1 answer
318 views

Subdivision Surface seam artifact?

so, I'm kinda new to 3d modelling (I've done some simpler low poly people and objects in the past) and I keep running into this issue with the Subdivision Surface modifier where it leaves this seam ...
user128400's user avatar
0 votes
2 answers
930 views

Weird line shows up on mesh model for a gun, and on Blender Guru's tutorial a weird cube like shape appears with sub surf. Why?

FOR THE ANVIL - It's really frustrating because i see people with the exact same problems as me but i feel like I've tried everything. Recalculated normals. Merge by distance. Getting rid of ngons, ...
Fnalix's user avatar
  • 13
0 votes
1 answer
236 views

What causes striped visual artifacts in models? [duplicate]

I don't know the legitimate term for them, but I'm referring to the "shaded" or "stripy" regions that appear that can appear in your models (see the picture below) Here is a contrived example ...
daviegravee's user avatar