Arcade-Maniac/Source/Library/PackageCache/com.unity.render-pipelines.high-definition@11.0.0/Documentation~/snippets/shader-graph-blocks/mask.md

**Mask** Specifies whether the current fragment represents the iris or the sclera. The Shader Graph only uses the x component of this Vector2. A value of 0 means the fragment represents the sclera, and a value of 1 means the fragment represents the iris. A value between 0 and 1 results in a linear blend between sclera and iris. • **Material** set to **Eye** Vector2(1.0, 0)