Fixed an issue when trying to open a look dev env library when Look Dev is not supported.

com.unity.render-pipelines.core/Editor/LookDev/EnvironmentLibrary.cs

@@ -4,6 +4,7 @@
 using System.Collections.Generic;
 using UnityEngine.UIElements;
 using System.IO;
+using UnityEditor;
 using UnityEditor.UIElements;
 
 namespace UnityEditor.Rendering.LookDev
@@ -117,26 +118,38 @@ public int IndexOf(Environment environment)
     [CustomEditor(typeof(EnvironmentLibrary))]
     class EnvironmentLibraryEditor : Editor
     {
-        VisualElement root;
+        VisualElement m_Root;
+        VisualElement m_OpenButton;
 
         public sealed override VisualElement CreateInspectorGUI()
         {
             var library = target as EnvironmentLibrary;
-            root = new VisualElement();
+            m_Root = new VisualElement();
 
-            Button open = new Button(() =>
+            m_OpenButton = new Button(() =>
             {
                 if (!LookDev.open)
                     LookDev.Open();
                 LookDev.currentContext.UpdateEnvironmentLibrary(library);
                 LookDev.currentEnvironmentDisplayer.Repaint();
             })
             {
-                text = "Open in LookDev window"
+                text = "Open in Look Dev window"
             };
+            m_OpenButton.SetEnabled(LookDev.supported);
 
-            root.Add(open);
-            return root;
+            m_Root.Add(m_OpenButton);
+            return m_Root;
+        }
+
+        void OnEnable() => EditorApplication.update += Update;
+        void OnDisable() => EditorApplication.update -= Update;
+
+        void Update()
+        {
+            // Current SRP can be changed at any time so we need to do this at every update.
+            if (m_OpenButton != null)
+                m_OpenButton.SetEnabled(LookDev.supported);
         }
 
         // Don't use ImGUI

com.unity.render-pipelines.high-definition/CHANGELOG.md

@@ -38,6 +38,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed ShaderGraph stack blocks appearing when opening the settings in Hair and Eye ShaderGraphs.
 - Fixed white screen when undoing in the editor.
 - Fixed display of LOD Bias and maximum level in frame settings when using Quality Levels
+- Fixed an issue when trying to open a look dev env library when Look Dev is not supported.
 
 ### Changed
 - Removed the material pass probe volumes evaluation mode.