LightweightPipeline asset is initialized from resource file. Moved pipeline asset to outside lightweight package.

ScriptableRenderPipeline/LightweightPipeline/Resources/LightweightPipelineAsset.cs

         [SerializeField] private float m_Cascade2Split = 0.25f;
         [SerializeField] private Vector3 m_Cascade4Split = new Vector3(0.067f, 0.2f, 0.467f);
 
-        [SerializeField] private Material m_DefaultMaterial;
-        [SerializeField] private Material m_DefaultParticleMaterial;
-        [SerializeField] private Material m_DefaultTerrainMaterial;
-
+        [SerializeField] private Material m_DefaultMaterial;
+        [SerializeField] private Material m_DefaultParticleMaterial;
+        [SerializeField] private Material m_DefaultTerrainMaterial;
+
 #if UNITY_EDITOR
         [UnityEditor.MenuItem("Assets/Create/Render Pipeline/Lightweight/Render Pipeline", priority = CoreUtils.assetCreateMenuPriority1)]
         static void CreateLightweightPipeline()
-            string[] guids = AssetDatabase.FindAssets("Lightweight-Default t:material");
-            string[] paths = new string[guids.Length];
-            for (int i = 0; i < guids.Length; ++i)
+            string[] guids = UnityEditor.AssetDatabase.FindAssets("LightweightPipelineResource t:scriptableobject");
+            LightweightPipelineResource resourceAsset = null;
+            foreach (string guid in guids)
-                string guid = guids[i];
-                paths[i] = AssetDatabase.GUIDToAssetPath(guid);
+                string path = UnityEditor.AssetDatabase.GUIDToAssetPath(guid);
+                resourceAsset = UnityEditor.AssetDatabase.LoadAssetAtPath<LightweightPipelineResource>(path);
+                if (resourceAsset != null)
+                    break;
-            foreach (string path in paths)
+            if (resourceAsset != null)
-                Material material = AssetDatabase.LoadAssetAtPath<Material>(path);
-
-                if (path.Length == 0)
-                    continue;
-
-                if (path.Contains("Terrain"))
-                    instance.m_DefaultTerrainMaterial = material;
-                else if (path.Contains("Particle"))
-                    instance.m_DefaultParticleMaterial = material;
-                else
-                    instance.m_DefaultMaterial = material;
+                instance.m_DefaultMaterial = resourceAsset.DefaultMaterial;
+                instance.m_DefaultParticleMaterial = resourceAsset.DefaultParticleMaterial;
+                instance.m_DefaultTerrainMaterial = resourceAsset.DefaultTerrainMaterial;
             }
 
             instance.m_DefaultShader = Shader.Find(m_StandardShaderPath);

ScriptableRenderPipeline/LightweightPipeline/Resources.meta

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ScriptableRenderPipeline/LightweightPipeline/Resources/LightweightPipelineResource.asset

+%YAML 1.1
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+  m_Script: {fileID: 11500000, guid: eb91b173ce266e040aa972ca9a561308, type: 3}
+  m_Name: LightweightPipelineResource
+  m_EditorClassIdentifier: 
+  DefaultMaterial: {fileID: 0}
+  DefaultParticleMaterial: {fileID: 0}
+  DefaultTerrainMaterial: {fileID: 0}

ScriptableRenderPipeline/LightweightPipeline/Resources/LightweightPipelineResource.asset.meta

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ScriptableRenderPipeline/LightweightPipeline/Resources/LightweightPipelineResource.cs

+using UnityEngine;
+
+public class LightweightPipelineResource : ScriptableObject
+{
+    public Material DefaultMaterial;
+    public Material DefaultParticleMaterial;
+    public Material DefaultTerrainMaterial;
+}

ScriptableRenderPipeline/LightweightPipeline/Resources/LightweightPipelineResource.cs.meta

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