Questions tagged [vertex-colors]

Vertex colors are color values that can be stored with each vertex in a mesh. This tag is for anything related to them.

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Importing Bambu Slicer 3mf Colored mesh to Blender with Color Data (vertex color preferably)

I have extracted a portion of XML code from a 3MF file that I created in Bambu Studio. To obtain the XML code, I used the standard 7zip unarchive process, resulting in a '.model' file located at [...
JackieSparrow's user avatar
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How can I use cycles to bake vertex colors of multiple meshes at once?

I'm trying to bake lighting into vertex colors of meshes in a scene, using the following method: change to Cycles rendering (Render > Render Engine > Cycles) Add a color attribute to each 3D ...
Mornedil's user avatar
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How to get bmesh vertex colors in Blender 4.0?

There's several answers on how to get vertex colors here on StackExchange, but something seems to have changed in 4.0 because none of them work. bmesh.loops.layers.color[0] returns index out of range
eobet's user avatar
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Can I convert color attribute to mask?

Good day. I need to adapt blender material to UE5, but this engine doesn't support color attributes, so I need to replace it with texture mask. Can I convert these color attributes to masks? Blender's ...
Сергей's user avatar
3 votes
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Error creating a color_attribute slot and bakes the AO onto this slot for multiple Objects

I need a script, that batch processes the selected objects, creates a color_attribute slot and bakes the AO onto this slot. This works fine with individual objects. However when I try to boundle it ...
Erdorano's user avatar
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How to differentiate vertices with a weight of zero in the active vertex group and vertices which are not referenced in the active vertex group?

I have already set the Zero Weights option to Active (Viewport Overlays > Zero Weights > Active) so that vertices which have a weight of zero in the active vertex group and vertices which are ...
Bouloubaga's user avatar
2 votes
1 answer
135 views

Is it possible to copy smooth vertex normal to the vertex Color channel?

Blue normals need to be copied to the vertex color. I have some low-poly models that need to be flat shaded so I want the vertex normals to be the split normals, but for custom shaders in Unity, I ...
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Export vertex colors (color attributes) of Protein Model to .usd file to present in Keynote

I am a blender beginner and plan use blender to visualise protein structures. Currently my workflow will be: Protein database >.stl> PyMOL >.gltf> Blender >.usd> Keynote. This will ...
Mork's user avatar
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How can I preserve face corner colors when doing a limited dissolve?

I have imported a model with vertex colors and plugged the Color Attribute to BSDF. Thanks to this thread I am able to merge vertices while preserving vertex colors and face corner colors by ...
Harry McKenzie's user avatar
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How to visualize point cloud colors in Blender 4.0 after PLY data import?

Given the following data set which stems from the export of a photogrammetric scan: ...
Markus W.'s user avatar
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How do you instruct Blender via .mtl file to import vertex colors?

I have a .OBJ file with vertex colors like: ...
Harry McKenzie's user avatar
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Exporting vertex colors made with geometry nodes in .FBX for Unreal engine

I'm having trouble exporting vertex colors which I assigned via geometry nodes. The advice given in these posts: How to export vertex colors , How to keep vertex colors generated with geometry nodes ...
otto's user avatar
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Blender Bug? .OBJ File Vertex Colors Misalign Under Various Conditions

I have found that Blender likes vertex colors to simply be an extension of the “v” line in .OBJ files, so I insert vertex colors into my .OBJ file by making a 6-element “v” instead of a 3- or 4- ...
L. Spiro's user avatar
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1 answer
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Convert Color Atribute to Face Delete Color Attribute

When I convert Domain from vertex to Face of my Color Attribute, it delete it... Why ? Thanks !
BLenjamin's user avatar
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Grease Pencil - Convert mesh to grease pencil with color Attributes

I have Converted a mesh with Color Attribute (vertex color) to grease pencil. It create solid Fill Shaders for each different Color Attribute but all are white ... Is it possible to keep all color ...
BLenjamin's user avatar
5 votes
1 answer
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Merging vertices messes up the vertex colors. Is there any fix for that?

Merging vertices messes up the vertex colors. Is there any fix for that? Before merging by distance: After merging by distance: I am using blender 4.0: Here's the file:
Richard Dickens's user avatar
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How to color or overlay on vertices via the Python api? [duplicate]

For a plugin I am making, I need to highlight the vertices that the user hovers over. I could not work out this color assignment part yet. I have tried methods then found out they were obsolete. I ...
SKB_BGPL's user avatar
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How to view two objects with different color sources in the same viewport shading?

I am quite new to blender and I'm having trouble rendering the following environment. I have a car in that has been created in blender and has been appended to the project, and the background house, ...
diegobc11's user avatar
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Blender does not import correct color from images

Im trying to make a product design in 3D for a friend but the colors just wont match the original image. Its exported from cymk illustrator. How to fix please
Ho Xin Yan's user avatar
2 votes
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Geometry Nodes: How to make a vertex color gradient on a tree depending on distance to root point?

I'm trying to create a vertex color gradient on a mesh created by converting a branch made with hand drawn curves to a mesh using geometry nodes. I want to color each edge ring on the created mesh ...
Adkopras's user avatar
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Get the length of the longest spline in Geometry Nodes [duplicate]

I'm working on a tree that needs to have a vertex color gradient depending on how far each vertex is along the branches of the tree, normalized in a 0-1 range. To do this I'm trying to get the length ...
Adkopras's user avatar
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How to split vertices by vertex color

I'm using vertex colors, since that's what my minimal game engine understands, but it only understands them on a per-triangle basis, and cannot interpolate across a triangle. Blender internally seems ...
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Vertex color applied on curves with geometry nodes wont display on Solid Flat in Blender 3.5

On Blender 3.4.1, after applying a geometry nodes modifier with a set vertex color to a curve, you can display that curve with flat vertex color on the Solid > Flat > Attribute. However, from ...
JL7's user avatar
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How can I assign material colors to a color attribute?

For the record I'm asking this question because it was brought up by a member recently and deleted under my eyes while I was clicking on the submit answer button, but I think it was a worthy question ...
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Apply random greyscale vertex colour to every element of an object using geometry nodes

I'm trying to use geometry nodes to make an ID map I can bake. I'll be baking in external software so ideally this would be vertex colour that can be exported in an FBX file. Applying colour based on ...
otto's user avatar
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How do you transfer weight paint or vertex colors to another model in blender?

I got a model then rigged it with AccuRig. When I imported the model into blender, the colors were all gone. So I tried transferring the vertex colors. That didn't work. Then I tried transferring the ...
Blender Theo's user avatar
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Converting vertex colours to UV coordinates

So I've got a colour attribute that needs to be converted into a UV map. My color attribute just so happens to only be using R and G values, and what I want is for the R value to be converted into the ...
mienaiKnife's user avatar
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1 answer
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Microsoft Powertoys renders STL with color data on thumbnail, how can i bring it to blender?

I have my STL files on the folder and powertoys are installed on my PC so i can review STL files. I noticed that Powertoys are actually rendering color to them, which is odd as i thought STL files don'...
JackieSparrow's user avatar
1 vote
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45 views

Above Threshold and Below Threshold in DataTransfer Modifier?

I'm working on DataTransfer Modifier to blend vertex color of 2 colors layer , it worked but i dont understand how Mix Mode : Above Threshold and Below Threshhold worked , i tried to modified Mix ...
Hee Lee's user avatar
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1 answer
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Vertex Colors Option Not Visible

For some reason under data options vertex colors does not show under the UV Maps. I have went into Shader Editor and went to add and searched for vertex colors however nothing pops up. I've tried ...
pequenojalapeno's user avatar
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Color Palette Swatches in UI

I'm using vertex paint to blend materials and i'd love to just have a red, green, blue swatches on the ui without having to go into the color picker every time Is there an option or addon to bring ...
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How to make objects change color depending on color at a point on surface of another object they are closest to?

I wanted to try to create a shader which will take the information from a linked object, and based on the closer colour of the surface of that object, it will apply that same colour to the objects ...
Nico's user avatar
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Export .ply file from .blend file

I'm facing a problem exporting a .ply file with colour information from a .blend file in Blender 3.5. While in the blender my object is displayed with the right texture when I export the file in .ply ...
Evdokimos Theodoridis's user avatar
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162 views

Exporting generated point cloud to Unreal with color data

I'm an art student from Paris, used to work with blender and pointclouds, and I have a ploblem that I can't seem to be able to solve. My workflow is (most of the time) what follows : Modeling mesh >...
Kiliannn's user avatar
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1 answer
910 views

How to use a Color attribute with a Geometry Proximity node to change vertex color based on depth

The set up here is pretty straight forward. Take a shape, get its volume, generate leaves within that volume and set the vertex color based on how near the surface the leaf is. My solution was to use ...
James Birdy's user avatar
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Getting stuck in baking vertex colors from texture

Operating System: Ubuntu 18.04 LTS Python Version: Python 3.10.11 Anaconda BPY Version: bpy-3.5.0 (installed by pip) I was trying to use ...
vios's user avatar
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Morph between vertex color from instancer

I have some trouble to morph between two vertex color. I made a morphing between two point cloud without problem, but when I try to morph vertex color, the first one is ok but second one stay black (...
JMW's user avatar
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Export vertex colors in .abc alembic

I am unable to export an alembic with vertex colours. I have a cube with some vertex colours on it that I would like to export as an alembic but on reimport, in a different file, the colour attribute ...
Phönix 64's user avatar
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126 views

Export animated vertex color as .fbx

Is it possible to export animated vertex colours, here created with a geometry nodes graph? The values animate from 1 to 0 and from 0 to 1, and the Color out is assigned to the colour attribute. The ...
Phönix 64's user avatar
1 vote
1 answer
46 views

File format or method of exporting per-vertex roughness values

I am working on a project that necessitates an automated export of blender objects with materials to basically any file format that supports diffuse and roughness maps. However, some objects have ...
user167693's user avatar
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64 views

Segment mesh based on vertex colors. Vertex Colors / Geometry Nodes

How would one segment or divide a large complicated mesh based on vertex colors. I have some large mesh files that were generated from a point cloud and the color data does a great job of showing ...
John K. Cameron's user avatar
0 votes
1 answer
136 views

Script that will assign vertex color based on distance from cursor

my goal is to create an operator script that will add the specified color to the vertex color of the selected object based on distance (and lambert using the normals facing). this will essentially ...
bertodelrio256's user avatar
0 votes
1 answer
140 views

Transferring vertex colour info to alpha channel

Is it possible to transfer the vertex colours in a mesh from the rbg channels to the alpha channel after they have been desaturated? thanks. I tried using chatGPT to create a script to do it but ...
Danny Grogan's user avatar
1 vote
0 answers
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Is there a way to make the same form sculpt mode smoothing in texture paint?

Is there a way to integrate more the one color with smoth in texturing painting?
Solido Pergamino's user avatar
1 vote
2 answers
971 views

Vertex color – setting alpha value on selected vertices

I’ve been given a task by the game programming team to create a shape with vertex color and alpha values on designated vertices. I managed to crack the vertex color part of the task, unfortunately I ...
Verminus's user avatar
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Copy Vertex Color from specific face (one object) to selected faces (another object)

I found only one way to transfer vertex colors from one object to another object: via Ctrl+L transfer Mesh Data, but this transfers all vertex colors and with different topology actually randomly (all ...
CodeTiger's user avatar
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Only paint the paint mask selected faces in vertex paint

I'm using the latest blender stable build: 3.5, in past versions it worked fine to just activate paint mask, and it only painted the selected face. Now, it suddenly stopped working with the latest ...
user140193's user avatar
1 vote
1 answer
96 views

How to get vertex colors efficiently?

I need to export vertex colors from Blender to a custom mesh format. To do it, I need to create a dictionary where the vertex index is a key and color is a value, as proof of concept I wrote this but ...
Ігор Спасівський's user avatar
0 votes
1 answer
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I click on one object, while in vertex paint, it shows it's colors, but it will not show any other objects colors

I'm new to blender. I click on one object, while in vertex paint, it shows it's colors, but it will not show any other objects colors.
Googolplexia's user avatar
1 vote
1 answer
146 views

Randomize Color of an Object with Multiple Meshes

I'm making a container with multiple meshes inside and I want to randomize the color when I duplicate it. Like the left red one in the picture I want to change its color between blue/red/green but ...
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