Update decal menu

- Move CreateDecal() to Editor folder (was breaking the standalone
build) in a DecalMmenuItems
- New menu to create decal is: GameObject/Render Pipeline/High
Definition/DecalProjector
- Add a null check test iin AddDecal on material

ScriptableRenderPipeline/HDRenderPipeline/Decal/DecalProjectorComponent.cs

 using System;
 using UnityEditor;
 using UnityEngine;
+
 namespace UnityEngine.Experimental.Rendering.HDPipeline
 {
     [ExecuteInEditMode]
 
         public void Start()
         {
-            m_PropertyBlock = new MaterialPropertyBlock();           
+            m_PropertyBlock = new MaterialPropertyBlock();
             DecalSystem.instance.AddDecal(this);
         }
 
         public void OnDrawGizmosSelected()
         {
             DrawGizmo(true);
-        }
-
-        [MenuItem("GameObject/Effects/Decal", false, 0)]
-        static void CreateDecal(MenuCommand menuCommand)
-        {
-            // Create a custom game object
-            GameObject go = new GameObject("Decal");
-            go.AddComponent<DecalProjectorComponent>();
-            // Ensure it gets re-parented if this was a context click (otherwise does nothing)
-            GameObjectUtility.SetParentAndAlign(go, menuCommand.context as GameObject);
-            // Register the creation in the undo system
-            Undo.RegisterCreatedObjectUndo(go, "Create " + go.name);
-            Selection.activeObject = go;
         }
 
 		public void UpdatePropertyBlock(Vector3 cameraPos)

ScriptableRenderPipeline/HDRenderPipeline/Decal/DecalSystem.cs

 
         public DecalSystem()
         {
-            CreateCubeMesh();       
+            CreateCubeMesh();
         }
 
         void CreateCubeMesh()
 
         public void AddDecal(DecalProjectorComponent d)
         {
+            // If no decal material assign, don't add it
+            if (d.m_Material == null)
+                return;
+
-                m_Decals.Add(d);                
+                m_Decals.Add(d);
             }
         }
 
             if (m_CubeMesh == null)
                 CreateCubeMesh();
             foreach (var decal in m_Decals)
-            {              
+            {
 				decal.UpdatePropertyBlock(cameraPos);
                 cmd.DrawMesh(m_CubeMesh, decal.transform.localToWorldMatrix, decal.m_Material, 0, 0, decal.GetPropertyBlock());
             }

ScriptableRenderPipeline/HDRenderPipeline/Decal/Editor.meta

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ScriptableRenderPipeline/HDRenderPipeline/Decal/Editor/DecalMenuItems.cs

+using System.IO;
+using UnityEngine;
+using UnityEngine.Experimental.Rendering.HDPipeline;
+
+namespace UnityEditor.Experimental.Rendering.HDPipeline
+{
+    public class DecalMenuItems
+    {
+        [MenuItem("GameObject/Render Pipeline/High Definition/DecalProjector", false, 0)]
+        static void CreateDecal(MenuCommand menuCommand)
+        {
+            // Create a custom game object
+            GameObject go = new GameObject("DecalProjector");
+            go.AddComponent<DecalProjectorComponent>();
+            // Ensure it gets re-parented if this was a context click (otherwise does nothing)
+            GameObjectUtility.SetParentAndAlign(go, menuCommand.context as GameObject);
+            // Register the creation in the undo system
+            Undo.RegisterCreatedObjectUndo(go, "Create " + go.name);
+            Selection.activeObject = go;
+        }
+    }
+}

ScriptableRenderPipeline/HDRenderPipeline/Decal/Editor/DecalMenuItems.cs.meta

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