Hello, I'm looking for some pointers on how to add instancing to my custom terrain shader. It was built a while ago, before the SRP was introduced. I've had a look through the TerrainLit shader of the HDRP but it's kind of hard to follow with everything buried inside multiple include files. I know that previously, just adding the multi_compile_instancing pragma and setting up the instance ID was enough to get something working, with UnityInstancing.cginc doing most of the work, but I noticed that the new TerrainLit shader isn't using any of the old .cginc files. I tried including "Packages/com.unity.render-pipelines.core/ShaderLibrary/UnityInstancing.hlsl" but that doesn't seem to be enough either. My game already has a fairly complex custom rendering system which is totally broken by the HDRP. If I'm not actually using the HDRP but I have the package installed, can I still make use of it's library of .hlsl helpers and get this working?