Rasagar/Library/PackageCache/com.unity.shadergraph/Documentation~/Iris-Limbal-Ring-Node.md
2024-08-26 23:07:20 +03:00

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# Iris Limbal Ring Node
Calculates the intensity of the Limbal ring, a darkening feature of eyes.
## Render pipeline compatibility
| **Node** | **Universal Render Pipeline (URP)** | **High Definition Render Pipeline (HDRP)** |
| ------------------------- | ----------------------------------- | ------------------------------------------ |
| **Iris Limbal Ring Node** | No | Yes |
## Ports
| name | **Direction** | type | description |
| -------------------------- | ------------- | ------- | ------------------------------------------------------------ |
| **IrisUV** | Input | Vector2 | Normalized UV coordinates that can be used to sample either a texture or procedurally generate an Iris Texture. |
| **View Direction OS** | Input | Vector3 | Direction of the incident ray in object space. Either from the camera in rasterization or from the previous bounce in ray tracing. |
| **LimbalRingSize** | Input | float | Normalized [0, 1] value that defines the relative size of the limbal ring. |
| **LimbalRingFade** | Input | float | Normalized [0, 1] value that defines strength of the fade out of the limbal ring. |
| **LimbalRingIntensity** | Input | float | Positive value that defines how dark the limbal ring is. |
| **Iris Limbal Ring Color** | Output | Color | Intensity of the limbal ring. |