From 897e8982f6385ef82af1d1f04c1e696ab1bb1843 Mon Sep 17 00:00:00 2001
From: Remi Chapelain <remi.chapelain@unity3d.com>
Date: Fri, 12 Jun 2020 15:09:39 +0200
Subject: [PATCH] Upgrade default legacy terrain to HDRP default TerrainLit

---
 .../UpgradeStandardShaderMaterials.cs         | 23 +++++++++++++++++++
 1 file changed, 23 insertions(+)

diff --git a/com.unity.render-pipelines.high-definition/Editor/Upgraders/UpgradeStandardShaderMaterials.cs b/com.unity.render-pipelines.high-definition/Editor/Upgraders/UpgradeStandardShaderMaterials.cs
index 3caefc2fd49..e474ad3aa5c 100644
--- a/com.unity.render-pipelines.high-definition/Editor/Upgraders/UpgradeStandardShaderMaterials.cs
+++ b/com.unity.render-pipelines.high-definition/Editor/Upgraders/UpgradeStandardShaderMaterials.cs
@@ -35,6 +35,29 @@ internal static void UpgradeMaterialsSelection()
         {
             MaterialUpgrader.UpgradeSelection(GetHDUpgraders(), "Upgrade to HD Material");
         }
+		
+		[MenuItem("Edit/Render Pipeline/Upgrade Scene Terrains to High Definition Terrains", priority = CoreUtils.editMenuPriority2)]
+		static void UpgradeSceneTerrainsToHighDefinitionTerrains(MenuCommand menuCommand)
+        {			
+			var LegacyDefaultTerrainMat = AssetDatabase.GetBuiltinExtraResource<Material>("Default-Terrain-Standard.mat");
+			var HDRPTerrainMat =  AssetDatabase.LoadAssetAtPath<Material>("Packages/com.unity.render-pipelines.high-definition/Runtime/RenderPipelineResources/Material/DefaultHDTerrainMaterial.mat");
+            var terrainArray = UnityEngine.GameObject.FindObjectsOfType<Terrain>();
+
+			if(terrainArray.Length == 0)
+			{
+				Debug.LogWarning("No terrains were found in the scene.");
+				return;
+			}
+			
+			foreach (Terrain currentTerrain in terrainArray)
+            {
+				if(currentTerrain.materialTemplate == LegacyDefaultTerrainMat)
+				{
+					currentTerrain.materialTemplate = HDRPTerrainMat;
+				}
+			}
+		}
+		
 
         [MenuItem("Edit/Render Pipeline/Multiply Unity Builtin Directional Light Intensity to match High Definition", priority = CoreUtils.editMenuPriority2)]
         internal static void UpgradeLights()