UnityCACAO-HDRP17/com.unity.render-pipelines.high-definition/Documentation~/snippets/shader-graph-blocks/bent-normal.md

Bent Normal The bent normal of the fragment. HDRP uses bent normal maps to simulate more accurate ambient occlusion. Bent normals only work with diffuse lighting. Material set to Eye, Fabric, Hair, Lit, or StackLit CoordinateSpace.Tangent