HDRP does not support tessellation for ray tracing, tessellated meshes fall back to a non-tessellated version.

The Visual Effect Graph does not support tessellation.

Decal Meshes do not support tessellation.

It is recommend to setup this value to maximun size extracted from the displacement map. This is required to help the culling algorithm to not discard vertices which could be out of bounds. Maximun possible world displacement in meter for the Material. In the Layered Lit Tessellation Shader and Lit Tessellation Shader, Unity calculates it automatically from displacement. The following property is only available in Master Stacks. This is because these platforms cannot consistently handle this many subdivisions. To maintain good performance on the Xbox One or PlayStation 4, do not use values greater than 15. Note that higher values also increase the resource intensity of the tessellation effect. More subdivisions increase the strength of the tessellation effect and further smooths the geometry.

If you want more subdivisions, set this to a higher value. The number of subdivisions that a triangle can have. For Master Stacks this option appears as an input. The following property is only available in the Layered Lit Tessellation Shader and Lit Tessellation Shader. This property only appears when you select Phong from Tessellation Mode. If you want HDRP to fully spherize the Mesh, set this to 1. If you do not want HDRP to spherize the Mesh, set this to 0. This property represents the strength of the spherization effect. To smooth the Mesh surface, Phong tessellation spherizes the Mesh. If you assign a displacement map for this Material and select this option, HDRP applies smoothing to the displacement map. Phong tessellation applies vertex interpolation to make geometry smoother. Phong: HDRP applies Phong tessellation to the mesh.If you do not assign a displacement map for this Material and select this option, HDRP does not apply tessellation. None: HDRP only uses the displacement map to tessellate the mesh.To smooth the result of displacement, you can also apply Phong tessellation. Materials can use a displacement map to tessellate a mesh. Specifies whether HDRP applies Phong tessellation or not. Note: increasing the number of triangles that this Shader tessellates makes the effect more resource intensive to process. If you want HDRP to tessellate smaller triangles, and thus produce smoother geometry, set this to a lower value.

For example, if you set this value to 100, HDRP subdivides triangles that take up 100 pixels. The screen space size (in pixels) at which HDRP should subdivide a triangle. HDRP does not tessellate triangles at distances that are further from the Camera further than this distance.

The maximum distance (in meters) to the Camera at which HDRP tessellates triangles. HDRP fades tessellation out from this distance up until End Fade Distance, at which point it stops tessellating triangles altogether. The distance (in meters) to the Camera at which tessellation begins to fade out. If you want more aggressive culling and better performance, set this to a higher value. If you want to disable back-face culling, set this to -1.0. Specifies how HDRP culls tessellated triangles. If you enable this feature, HDRP exposes the following properties to control how Unity tessellates your Material's surface and smooths geometry: Properties The Tessellation options control how Unity tessellates your Material's surface and smooths geometry.

Tessellation shader