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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Vertex Paint NOT based off geometry/ vertices?

I want to vertex paint on a model but when I want to paint a blank face, it does this: I understand Vertex paint uses VERTICES, but where there are smooth faces (and lack of vertices) am I just SOL?
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vertex paint not very efficient in python, blender stops working

Imagine you have the following situation: you want to color the vertices relative to a certain vertex group x in red. I used the following function the problem is that it is not very efficient in fact ...
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I can't export vertex colors anymore in Blender 3.2

I just upgraded from Blender 3.1 to 3.2 because I was excited about the changes to vertex colors but I've been disappointed to find that none of the exporters support them. Currently I'm exporting a ...
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2 answers
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Getting color at each vertex with python

I wrote this script to put vertexes and their colors into a JSON file for a project I'm working on. I was using this answer to get the colors. Here's the script that I wrote with that. ...
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how to export vertex color node in blender?

I export a .fbx file with vertex colors node in blender, then i import the same fbx in blender, but the vertex colors node disappear, i have to add and link the node again, how can i save the vertex ...
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How to keep vertex colors generated with geometry nodes when exporting to .FBX?

I'm trying to export a mesh with vertex colors generated by geometry nodes but when I export it, it comes out with 100% in all channels. Here's the solution I'm trying to make it work: Make geometry ...
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Dynamic Paint not showing in Render

I am follwing this tutorial to simulate rain drops falling onto the ground. The drop should make the ground wet. Therefore I am using dynamic paint. In the material the wetmap is plugged into the ...
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3 votes
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Geometry Nodes: Face Corner Colors

'Vertex' painting is actually face-corner painting. So per-face colors are possible, can be picked up by an Attribute input node in shader-trees. Here are 2 color-attribute layers on a cube, both ...
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Map (smooth) vertex group to a vertex color in geometry nodes

I have a vertex group, which was painted using weight paint, called trees. I would like to use it in the shader editor to (smoothly) mix between two shaders. As I ...
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Where is the sculpting vertex paint in blender 3.1?

I can't find sculpting vertex paint. It was suggested to enable this feature in the Experimental tab, but it's not there either
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is it possible to detect edges/curvature in blender geometry nodes?

Working on a non-destructive asset (roofing tiles) and I'm trying to use vertex colors to define edges (red vertex color) and curvature (green vertex color) There's meant to be an edge detect node in ...
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3 Color Vertex Painting

I am blending textures via the 'vertex color' input in the 'fac' of a 'mix shader node', and I was wondering if there is a way to blend the 3 or more textures with a vertex color node. This way, I can ...
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Can someone please help me get at the textures of this Sketchfab model?

For reference, the model is here: https://sketchfab.com/3d-models/otto-the-autopilot-7db2b78e311a44ac9b84b1bb6f768413. It's a very nice free model of a classic movie "character", the likes ...
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Dense Cloud col attribute not showing

I'm using metashape agisoft to generate dense cloud from images and I exported the points in PLY and imported to blender. then used attribute named it col to get the original color what calculated by ...
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1 vote
1 answer
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What is making the colors on this object?

I've got a 3rd-party payware object that when imported into Blender contains colors that override the applied shader material. Where are these colors coming from? How do I make them go away? I count ...
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5 votes
1 answer
152 views

Is it possible to use multiple active vertex colors?

I'm using vertex colors to control features of a material. This works well for one of them, but I'm out of channels and need to handle pigmentation now. The other option is of course using a texture, ...
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2 votes
0 answers
191 views

How can I get vertex color on geometry generated with geometry nodes

I am trying to set vertex color to generated geometry to output them to a .ply file (and not necessarily having them displayed into the viewport). I can set vertex color to the original mesh, but not ...
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1 answer
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How to output to a Vertex Color on a Geometry-Nodes-generated mesh

Previous questions/answers explain how to output vertex color from Geometry Nodes, but they rely on being able to select a vertex color slot in the Geometry Nodes modifier's Output Attributes: ...
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3 votes
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Geometry Nodes: How to iterate a Vertex Color gradient across geometries?

I want the geometry I create in Geometry Nodes to be generated with a Vertex Color gradient that I can use in the object's material. In this example there are several rectangles, one original, and ...
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3 votes
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Adding Texture with Weight Paint Doesnt show

I am creating a highlands environment and trying to add a texture of a road by drawing on a plane with weight paint. I have two textures connected into a mix shader with a noise texture, coloramp ...
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2 answers
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Vertex Paint - Cornering Issue

I've made a vertex group on the model of edges I want to displace: In Vertex Paint mode (Vertex Selection) I selected the vertex group, and then set that full black (Paint > Set Vertex Colors): ...
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2 votes
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How to add color information from csv file to objects

I have a csv file with xy coordinates and an additional column that I want use as color information and set as a color ramp. Below is an example of the data I have: Edit: if the color ramp was to go ...
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Importing model with transparent vertex colors not working

I'm trying to import a 3d mesh I generated in another program to blender which uses vertex colors, but the transparent areas always look opaque. I've tried changing the material blend mode, viewport ...
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Vertex painting how to

First pic below shows the horns and the node setup. The horns were masked and done as a separate vertex color index. Not sure if this was necessary and might well be complicating things. Second pic ...
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1 answer
158 views

(3.0) Geometry Nodes break Vertex Colors

https://blender.stackexchange.com/a/245919/134355 I need to use the method shown in the linked post for something of my own, but even when using that exact Node layout and Modifier Setting, it ends up ...
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1 vote
1 answer
338 views

Is it possible to set/manipulate vertex colors from geometry nodes?

Is there a way to output floats or colors into a vertex color layer from geometry nodes in Blender 3.0 or 3.1? Thanks!
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1 answer
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Assigning vertex groups in Geometry Nodes

I would like to know if there's a way to assign vertex colors in geometry nodes.
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2 votes
2 answers
195 views

How to assign a color for a single surface without changing the other side color?

[Blood vessel][1] I am trying to draw a 3D blood vessel. I want the outer side of the vessel to be darker than the the inner layer. My problem is when I assign a color it will be applied for both ...
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0 votes
1 answer
207 views

Vertex Color Paint Rendering in Blender v3

I'm going totally crazy. I have my nodes all set, the Vertex colors are named something other than 'Col,' and everything is ready to go for rendering. However, every guide on the Internet tells me to &...
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Blender Crashes when Baking Vertex Color

I am trying to bake the vertex color, by plugging the vertex color directly into the material output slot and having bake set to emission, but Blender immediately freezes, doesn't show any progress ...
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6 votes
3 answers
2k views

Geometry Nodes output to vertex color

I'm new to geometry nodes in 3.0 and a bit stuck on understanding how to output data. I've spent a fair bit of time searching this, but perhaps I don't understand the system well enough to find the ...
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0 answers
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Blender model completely white after exporting (.fbx) [duplicate]

I'm pretty new to Blender and Unity (started yesterday), and I am having some trouble with something. Basically, I want to use this model in Unity (pretty much transferring it from one game to another)...
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7 votes
1 answer
401 views

Blender for scientific visualization - Point color interpolation from vertex color data based on distance

TL;DR: For a given point in a face/polygon how can I compute the distance between that point and all the vertices on the given face with shader nodes? Overall intent: I want to visualize complex ...
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2 votes
1 answer
102 views

How do I use the exact color of one part, then put it on another part?

The title might be a bit confusing, buts lets say I import a 3D model and the torso is blue. how would I select that exact color and put it on the legs? Thank you.
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2 votes
1 answer
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Packing float32 to vertex color

I am learning vertex animation textures. Already used UV.x as normalised vertex index to animate a flag and it works great. I don't have access to uv2 ("game" engine still under in dev ...
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0 votes
1 answer
180 views

Connect 2 nodes to Mix RGB node for all materials via python script

I want to connect an image texture node and a vertex color node to a Mix RGB node (with Multiply as blending mode and Fac set to 1), which then connects to the Base Color of my Principled BSDF node - ...
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2 votes
1 answer
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How to use a wetmap to distribute particles (how to distribute plants where moisture collects)

This is a follow-up to this question - Geometry nodes: How to distribute points on valleys only? One of the approaches considered was using particles to simulate rain, then using the wet map from ...
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How to add color to .obj file for 3d printing service?

I am trying to add the texture to my .obj file properly so it can be printed by my 3d service, I am having a lot of trouble because it has a deadline. It's not a stamp texture, I have tried this in ...
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3 votes
0 answers
53 views

Blender ColorRamp strange behavior

I found an unexpected behavior of ColorRamp node and I will demonstrate it on a simple example. There are five cubes and they have vertex colours set. From left, the colours are in RGB: (0.0, 0.0, 0.0)...
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1 answer
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How do I convert the vector of hair curve to father mesh's vertex_color by python?

How to turn hair's vector(XYZ) to monkey's vertex color(RGB) This is the maya python,I want to convert this code to Blender,What should I write? ...
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2 votes
1 answer
216 views

How to batch modify the vertex colors of different meshes

I hope to use different vertex coloring to create the effect of edge lines. Different vertex groups can achieve this effect by giving different colors. But currently I have a large number of meshes ...
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0 votes
0 answers
23 views

Mesh face selection by color range

I'm doing a scene inside a cathedral, starting from a scan. To make it short, I'm selecting the windows by hand and assigning a glass shader so the light can pass through. It works, but, I was ...
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6 votes
1 answer
193 views

Geometry Nodes Separate out Alpha Channel from Vertex Colors

I'm using the RGBA channels of the vertex colors on geometry for various effects but I can't find a way to separate out the alpha channel in geometry nodes. Is there a way to access the Alpha channel ...
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1 vote
1 answer
1k views

How to transfer vertex paint from one mesh to another - without copying other data

I need to transfer vertex volors from one mesh to another. They are the same but first one has normals that i want to keep, second contains vertex color i want to transfer but doesn't have normal info....
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2 votes
2 answers
213 views

Blender colour through Z vertice

Hello I've read a few threads on this but i havent found anything with my specific issue. I want to try colouring my mesh based on specific Z values. So for example if its above 10 I want it to be red....
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2 votes
1 answer
102 views

adding texture on vertex color by mixrgb makes texture image lighter on white vertex color

When editing a vertex color and then adding an image as texture on it with mixrgb it is lightening the texture image. i only changed the vertex color. When it is on brown the texture image is correct ...
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0 votes
1 answer
90 views

Separation of a multicolor 3D object in X3D format based on its individual colors

I am a biochemist and I would love to 3D print a multicolor model of the Corona Virus Spike protein by means of a FDM 3D printer. As input file I downloaded a multicolor X3D-file from https://3dprint....
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1 vote
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Jagged result of baked vertex color

My model has vertex color. I unwrap using Smart UV Project with default (Angle limit 66 and Correct Aspect selected). In shading node, I linked Vectec Color (Col) > Principle BSDF > Material ...
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2 votes
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Why is the vertex color interpolated differently in different cube faces?

I realise this might be a very simple and stupid question as I am just getting started with Blender. I am trying to procedurally colour vertices to produce pseudo-colour maps. I created this simple ...
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0 votes
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798 views

Import .ply with vertex colors into Blender

I'm trying to render something that would look like this: I've had a similar problem here: Blender 2.81 doesn't seem to be importing vertex color for .ply And in that question I linked where ...
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