[HDRP] Fixed NullReferenceException in HDRenderPipeline.UpgradeResourcesIfNeeded (case 1292524)

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

@@ -26,6 +26,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixed an issue with opaque material using a shader graph with Transparent SurfaceType selected. FPTL was not working for this case.
 - Fixed NullReferenceException when loading multipel scene async
 - Fixed an issue where a warning about the static sky not being ready was wrongly displayed.
+- Fixed NullReferenceException in HDRenderPipeline.UpgradeResourcesIfNeeded (case 1292524)
 
 ### Changed
 - Removed XRSystemTests. The GC verification is now done during playmode tests (case 1285012).

com.unity.render-pipelines.high-definition/Runtime/RenderPipeline/HDRenderPipeline.cs

@@ -347,7 +347,10 @@ public HDRenderPipeline(HDRenderPipelineAsset asset, HDRenderPipelineAsset defau
             m_RayTracingSupported = GatherRayTracingSupport(m_Asset.currentPlatformRenderPipelineSettings);
 
 #if UNITY_EDITOR
-            m_Asset.EvaluateSettings();
+            // If defaultAsset is not ready (can happen due to loading order issue), then we should return
+            // There is a similar check in Render()
+            if (HDRenderPipeline.defaultAsset == null)
+                return;
 
             UpgradeResourcesIfNeeded();