This is a paid asset, but now you can download MicroSplat – Polaris Integration for FREE, but please remember this package is provided only for learning purposes or to be able to test before buying the product, NOT FOR COMMERCIAL PURPOSES.
Detail this asset from Unity Store: Original Link
MicroSplat – Polaris Integration v3.9.7
The Polaris Integration module for MicroSplat allows you to use MicroSplat with Polaris Low Poly Terrain Engine
Once installed, MicroSplat can be used as a replacement for the included terrain shaders in PolarisSimply click a button in Polaris with MicroSplat and this module installed, and your terrain will be setup for texturing with MicroSplat.
All MicroSplat modules are supported with the exception of the Wetness, Puddles, Streams and Lava module and Terrain Blending module. Tessellation and Per Pixel normal are also not supported.
Requires the MicroSplat framework to be installed, along with Polaris Low Poly Terrain Engine
URP and HDRP compatible when appropriate MicroSplat URP or HDRP module is installed.