Firstborn/Library/PackageCache/com.unity.shadergraph@12.1.8/Documentation~/Contrast-Node.md

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2023-03-28 13:24:16 -04:00
# Contrast Node
## Description
Adjusts the contrast of input **In** by the amount of input **Contrast**. A **Contrast** value of 1 will return the input unaltered. A **Contrast** value of 0 will return the midpoint of the input.
## Ports
| Name | Direction | Type | Binding | Description |
|:------------ |:-------------|:-----|:---|:---|
| In | Input | Vector 3 | None | Input value |
| Contrast | Input | Float | None | Contrast value |
| Out | Output | Vector 3 | None | Output value |
## Generated Code Example
The following example code represents one possible outcome of this node.
```
void Unity_Contrast_float(float3 In, float Contrast, out float3 Out)
{
float midpoint = pow(0.5, 2.2);
Out = (In - midpoint) * Contrast + midpoint;
}
```