This shader will automatically texture terrains based on slope, noise, and height. It also maintains the functionality of the default terrain shader by allowing you to paint up to 3 textures on the terrain. It was created for URP, but can be converted for use in HDRP (Not Tested). The shader is intended to work with Unity Terrains, but should work on any mesh (Not Tested). A demo scene is included with a set up material and terrain layers, with textures from ambientcg.com.