---
title: "Vertex Attribute"
url: "https://help.maxon.net/r3d/cinema/en-us/Content/html/Vertex%2BAttribute.html"
section_path: "Shaders > Attributes Shaders > Vertex Attribute"
description: "This shader gives you access to color and scalar per-vertex attributes. This can be used as an alternative to the more flexible Color User Data and Scalar …"
---

# Vertex Attribute

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# Vertex Attribute

## Introduction

This shader gives you access to color and scalar per-vertex attributes. This can be used as an alternative to the more flexible [Color User Data](https://help.maxon.net/r3d/cinema/en-us/Content/html/Color%2BUser%2BData.html.md) and [Scalar User Data](https://help.maxon.net/r3d/cinema/en-us/Content/html/Scalar%2BUser%2BData.html.md) nodes, which can access point, object *and* vertex attributes.

## Parameters

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| ![Image: C4D_Vertex_User_Data.png](https://help.maxon.net/r3d/cinema/en-us/Content/Resources/Images/C4D_Vertex_User_Data.png) |

### Attribute Name

This is the name of the vertex attribute that will be read.

### Presets Button

This button lets you quickly access read data from your scene by filling the Attribute Name field with one of the following common sources:

- Curves
  - Curve Color (Polygon Curves Only)
  - Curve ID Color
  - Curve ID Color with Alpha
  - Curve ID Normalized
  - Curve Position (Polygon Curves Only)

### Default Color

This is the color that will be output if the attribute is not found.

### Default Scalar

This is the scalar that will be output if the attribute is not found