mathe/Library/PackageCache/com.unity.shadergraph@14.0.8/Documentation~/DDX-Node.md
2024-09-20 20:30:10 +02:00

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# DDX Node
## Description
Returns the partial derivative of the input **In** with respect to the screen-space x-coordinate. This node can only be used in the pixel shader stage.
## Ports
| Name | Direction | Type | Description |
|:------------ |:-------------|:-----|:---|
| In | Input | Dynamic Vector | Input value |
| Out | Output | Dynamic Vector | Output partial derivative value |
## Generated Code Example
The following example code represents one possible outcome of this node.
```
void Unity_DDX_float4(float4 In, out float4 Out)
{
Out = ddx(In);
}
```