---
title: "Veining"
url: "https://help.maxon.net/c4d/en-us/Content/html/XSLAMABEL-ID_MABEL_VEINING.html"
section_path: "Material Manager > Classic Materials > Classic material > Volumetric Shaders > Mabel Shader > Veining"
element_id: "XSLAMABEL"
group_id: "ID_MABEL_VEINING"
description: "The veining channel controls the size and mixing of the two vein surfaces. You also can change the relative color variance and turbulence of the veins as …"
---

## Veining

The veining channel controls the size and mixing of the two vein surfaces. You also can change the relative color variance and turbulence of the veins as well. There is only one veining group that is shared by both surfaces.

This group of parameters contains attributes of the veining function. The function is basically an alternating gradient on the Y axis that can be perturbed using a noise function.

### Seed

Parameter ID: `SLA_MABEL_SEED` · Range: [-2147483648..2147483647]

This value influences the noise dispersion for Noise Shaders. Different **Start Values** will result in different noise dispersions.

### Veining Turbulence

Parameter ID: `SLA_MABEL_VEINING_TURBULENCE`

Noise function used to perturb the veins (look up **noise types**).

### Veining Stirring

Parameter ID: `SLA_MABEL_VEINING_STIRRING` · Range: [0..+∞%]

Amount of distortion applied to the veins.

### Veining Scale

Parameter ID: `SLA_MABEL_VEINING_SCALE` · Range: [0..100%]

The scale of the stirring noise function.

### Veining Octaves

Parameter ID: `SLA_MABEL_VEINING_OCTAVES` · Range: [0.00..20.00]

Octaves of fractal detail used in the stirring function.

### Veining Size

Parameter ID: `SLA_MABEL_VEINING_SIZE` · Range: [0..100%]

Size of the veins (Surface1) to the body (Surface 2).

### Veining Contrast

Parameter ID: `SLA_MABEL_VEINING_CONTRAST` · Range: [-100..100%]

Contrast applied to the veins to make them blend smoothly or separate distinctly.

### Variance Turbulence

Parameter ID: `SLA_MABEL_VARIANCE_TURBULENCE`

Noise function used to vary the veining.

### Variance Amplitude

Parameter ID: `SLA_MABEL_VARIANCE_AMPLITUDE` · Range: [0..+∞%]

Amount of variance applied to the veins.

### Variance Octaves

Parameter ID: `SLA_MABEL_VARIANCE_OCTAVES` · Range: [0.00..20.00]

Octaves of fractal detail used in the variance function.

### Variance Scale

Parameter ID: `SLA_MABEL_VARIANCE_SCALE` · Range: [0..100%]

The scale of the variance function.

### Variance Contrast

Parameter ID: `SLA_MABEL_VARIANCE_CONTRAST` · Range: [-100..100%]

Contrast applied to the variance noise.