Questions tagged [artifacts]

questions about strange visual discrepancies in renders

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6
votes
1answer
137 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
540 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 ...
4
votes
1answer
838 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
336 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
135 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
661 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
4answers
488 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
183 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
832 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
1answer
384 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
2answers
475 views

How to reduce artifacts on curved text/vector

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
27 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
46 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
1answer
1k 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
650 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
366 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
573 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
96 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
169 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
294 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
46 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
705 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
286 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
65 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
2answers
101 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
31 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
289 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
51 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 ...
1
vote
1answer
388 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
1answer
118 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
1answer
1k 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
51 views

Strange artifacts on cycles render [duplicate]

Do you have any idea what is causing these artifacts on my cycles render? I'm using a sun light source to illuminate the scene. 128 samples. I've pasted a screenshot of the material that the ...
1
vote
1answer
31 views

Weird UV artifacts in final render

In preview render (with enabled RenderLayer) it looks ok: But in actual final render something strange happening with UV map: I tried to reunwrap mesh, change sample count but result is still the ...
1
vote
1answer
96 views

Fixing artifacts from an imported Medium sculpt?

I'm creating some assets for a game I'm making using Medium by Oculus, but when I import it into Blender it leaves me with strange lighting artifacts. I tried dissolving some vertices and edges to try ...
1
vote
2answers
147 views

Compositing Shadow pass problem

Here is my problem, I need to create 2D aspect animation from 3D model in blender. From the start my rended image is ok But when I transform it, I need to use the Shadow Pass and it looks realy ...
1
vote
1answer
140 views

Why a scene render might have many very dark triangle artifacts?

It was imported from obj and the scene has some environment light and a lot of sun light (the only way to make shadows more ...
1
vote
1answer
388 views

Dealing with Artifacts in The Render?

Please help, I am going insane trying to deal with this. I am pretty new to blender but i've just completed building a character. The face is pretty intricate and I had a feeling it was going to be a ...
1
vote
1answer
485 views

Blocky Textures around object, Blender render artifacts, possible causes?

I'm getting weird render artifacts around the edge of a cylinder on the floor, blocky areas that look low-res: (Edit) Image A: Blocky Textures behind the cylinder Rendering from other angles shows ...
1
vote
0answers
28 views

Extrude and Bevel problems with SVG Curves

Alright, so I'm working on a background using a 2D logo I've created for myself in Illustrator. Ive decided that for starters, I want to turn the logo into a 3D object, with each path beveled on the ...
1
vote
1answer
54 views

Strange artifacts

I imported a model but after i set the materials, these strange artifact appeared and the lighting seems wrong. I tried to recalculate the normals, disable/enable the autosmooth and other things but ...
1
vote
1answer
35 views

How to get rid of black triangles and artefacts?

for the past few days, I've been struggling against artifacts problems with a mesh. I used the boolean modifier on this following cube : After applying the "Difference Operation", here is the ...
1
vote
1answer
43 views

Shading artifacts / Tricky modelling situation

I hope someone can help me out with this. I'm modelling a moka pot, similar to this one: This is what my mesh looks like in the snout area: As shown in Fig. 3, I marked the planes around the ...
1
vote
0answers
23 views

Artifacts on my explosion render

i have a problem , because when i render my project. On my scene appears rectangle.
1
vote
3answers
280 views

Bad normal map baking

I'm trying to migrate from 3Ds Max to Blender and everything was good until the moment I started to learn baking process. I have a 6 faces cube as low poly and its subdivided copy as high poly. Using ...
1
vote
0answers
43 views

Weird Sharp Shadows when normal baked with cage

I am getting this weird sharp edges at the shadow transition when I used cage while baking them. It didn't appear when I when cage was not used, but without cage the edges are very sharp and don't ...
1
vote
1answer
99 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 ...
1
vote
0answers
16 views

Render vertical artifacts [duplicate]

Can't find information on it, since don't know what it is actually. This is what I have in Rendered Viewport Shading: And this is what Render shows me as an result: So, what are these vertical lines?...
1
vote
1answer
143 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 ...
1
vote
0answers
142 views

Sculpting problems, not enough faces?

I've just started trying out the sculpting tools in blender. I first followed this sculpting basics tutorial: https://www.youtube.com/watch?v=uVpwivEl_6o and am now trying to sculpt a leaf shape. I ...
1
vote
0answers
67 views

Artifacts appear in final render, but not in preview

I'm trying to do a simple cup, I have reduced the materials to an absolute minimum of nodes, so the issue probably isn't in the material. The rendered view in the viewport looks like this: but the ...