Questions tagged [artifacts]

questions about strange visual discrepancies in renders

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1answer
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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/...
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
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 ...
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 ...
0
votes
1answer
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 ...
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 ...
1
vote
1answer
232 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 ...
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 ...
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 ...
1
vote
1answer
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, ...
1
vote
1answer
405 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 ...
1
vote
0answers
1k 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 :(
1
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0answers
212 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 ...
1
vote
1answer
765 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 ...
1
vote
2answers
2k 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 ...
0
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2answers
58 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, ...
0
votes
1answer
310 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 ...
0
votes
1answer
36 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 ...
0
votes
1answer
3k 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 ...
0
votes
1answer
122 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/...
0
votes
1answer
76 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 ...