Questions tagged [artifacts]
questions about strange visual discrepancies in renders
385
questions
8
votes
1
answer
786
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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 ...
- 83
6
votes
1
answer
132
views
How stack cubes together to form a multiresolution 3D grid without z-ordering issues?
I am using scientific quantum chemistry software where we represent electronic orbitals in an adaptive grid based on multiresolution analysis and multiwavelets. I would like to generate a rendered ...
- 271
6
votes
1
answer
147
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 ...
- 662
5
votes
1
answer
5k
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/...
- 109
5
votes
1
answer
820
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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 ...
- 121
5
votes
1
answer
387
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 ...
- 507
4
votes
2
answers
4k
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 ...
- 312
4
votes
3
answers
488
views
How to get rid of weird line when using curves with Geo Nodes?
I am applying the following geometry nodes setup to a Bezier curve and getting this weird line. It seems to become less pronounced if I lower the curve P resolution, but I want to keep it high. How ...
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4
votes
1
answer
1k
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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 ...
- 316
4
votes
1
answer
932
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 ...
- 141
3
votes
2
answers
449
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:
...
- 427
3
votes
2
answers
845
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-...
- 55
3
votes
1
answer
479
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 ...
- 31
3
votes
2
answers
3k
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 ...
- 147
3
votes
1
answer
1k
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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 ...
- 253
3
votes
1
answer
432
views
Why doesn't the normal map hide the inaccuracies of the low poly model with smooth shading?
I'm trying to bake a normal map from a high poly to a low poly model. If I bake on low poly with smooth shading I get horrible artifacts :( But if I bake with auto-smoothing then I can see the sharp ...
- 127
3
votes
1
answer
371
views
Issues with a normal map baking
I don't understand what's going wrong when baking my normal map. You can see the strange result on a pic.
It's a non-manifold geometry mesh and the text on a tire has a bad topology. Can it affect on ...
- 33
3
votes
1
answer
836
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
1
answer
63
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 ...
- 55
3
votes
1
answer
2k
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 ...
- 133
3
votes
4
answers
697
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 ...
- 642
3
votes
0
answers
436
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 ...
- 31
2
votes
2
answers
3k
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 ...
- 33
2
votes
1
answer
41
views
Striped artifacts on object when applying metalness-map to shader-node
i hope you can help me with this.
So i have the problem that my model gets striped artifacts when applying a metalness map I baked out of Substance Designer in the shader node, or even when no ...
2
votes
2
answers
141
views
How to avoid render artifacts when transitioning from a curved to a flat surface?
I am trying to model a smooth spherical bump in a flat surface. I initially used a bezier curve, converted it to a mesh, used a screw modifier and smooth shading to make the bump. Then I just placed ...
- 131
2
votes
2
answers
117
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 ...
- 315
2
votes
1
answer
365
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://i.stack.imgur.com/sTf0T.jpg
This ...
- 209
2
votes
1
answer
569
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 ...
- 23
2
votes
1
answer
63
views
Weird shading artifact caused by a non-planar N-Gon
How to fix this weird gray area on my object?
What I meant by weird gray area is the slightly darker gray triangle above the curved edges. This is a shading artifact caused by a non-planar N-Gon.
2
votes
2
answers
1k
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 ...
- 33
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 ...
- 703
2
votes
2
answers
40
views
why does my obj have differnt shades of grey on faces in object view
Why does my object have different shades of grey on faces in Object Mode? It also looks and glitches when I export it to Roblox studio, and the different shades are still there even with a material or ...
- 23
2
votes
1
answer
31
views
Strange wavy X shaped render artifacts
I'm getting an annoying wavy effect on renders in a low poly cycles file. Whats frustrating is that I've rendered several files now with all the same settings without this artifact. The strange thing ...
2
votes
1
answer
81
views
Change EEVEE volumetric sampling limits
I'm trying to minimize artifacts in EEVEE and I want to change EEVEE volumetric sample and shadow sample limits beyond the cap, is there a Python solution for this?
- 21
2
votes
1
answer
189
views
Weird artifact generated by emission shader
I'm not sure what to caption this question but there is a weird artifact that shows up on some frames in my image sequence render. I have a 24 fps config but the animation was too fast so instead of ...
- 10.3k
2
votes
1
answer
552
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 ...
- 41
2
votes
1
answer
1k
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 ...
- 150
2
votes
1
answer
383
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.
...
- 155
2
votes
2
answers
677
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 ...
- 163
2
votes
1
answer
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 ...
- 21
2
votes
1
answer
18
views
Line Appearing in Mesh after resizing
I'm a Blender beginner and I'm wondering why a line appears in my mesh after resizing the shown ring of vertices. I shrunk it a little. Before there was no line. My goal is to add more curvature to ...
- 33
2
votes
1
answer
37
views
Weird shading when adding inset to smoothed beveled object
I'm modeling this truck and when I try to inset to make the side windows there is this weird shading/square in the size of the inset and the edges stay the same when trying to extrude too.
2
votes
1
answer
519
views
weird artifacts when doing Boolean operation
As shown at picture above I have some problems when doing Boolean operation. The cube bound box is where the operation is happening but somehow Boolean is affecting totally different parts of mesh and ...
- 31
2
votes
1
answer
216
views
Wavy Artifact in Viewport Rendered Mode
My rendered preview has these really weird artifacts. I found them inside of the actual render too. I don't remember changing any settings that could have made it this way. I tried turning denoising ...
- 299
2
votes
1
answer
139
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)....
- 357
2
votes
1
answer
493
views
Deleting voxel artifacts (averaging small geometry)
I need help. There is such a mesh. Obtained by importing the *.obj file from the fractal generator into Blender. The fractal generator creates this mesh using voxels. In this case, all sharp edges are ...
2
votes
2
answers
342
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 ...
- 71
2
votes
1
answer
543
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 ...
- 65
2
votes
1
answer
741
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 ...
- 243
2
votes
0
answers
27
views
why am i getting this texture artifacting
I notice this texture is artifacting but can't seem to find what's causing it. It occurred after I joined multiple meshes together and added a transformation to that joined mesh.
But the artifacts ...
- 95