Fixed pass warning in ASV

Signed-off-by: antonmic <56370189+antonmic@users.noreply.github.com>

Gems/Atom/RPI/Code/Include/Atom/RPI.Public/Pass/PassDefines.h

@@ -43,6 +43,9 @@ namespace AZ
         // Rendering -> Idle
         //           -> Queued (Rendering will transition to Queued if a pass was queued with the PassSystem during Rendering)
         //
+        // Any State -> Orphaned  (transition to Orphaned state can be outside the jurisdiction of the pass and so can happen from any state)
+        // Orphaned  -> Queued    (Orphaned state transitions back to idle. 
+        //
         enum class PassState : u8
         {
             // Default value, you should only ever see this in the Pass constructor
@@ -92,7 +95,10 @@ namespace AZ
             //   |
             //   V
             // Pass is currently rendering. Pass must be in Idle state before entering this state
-            Rendering
+            Rendering,
+
+            // Special state: Orphaned State, pass was removed from it's parent and is awaiting deletion
+            Orphaned
         };
 
         // This enum keeps track of what actions the pass is queued for with the pass system

Gems/Atom/RPI/Code/Source/RPI.Public/Pass/Pass.cpp

@@ -147,6 +147,11 @@ namespace AZ
             m_treeDepth = m_parent->m_treeDepth + 1;
             m_path = ConcatPassName(m_parent->m_path, m_name);
             m_flags.m_partOfHierarchy = m_parent->m_flags.m_partOfHierarchy;
+
+            if (m_state == PassState::Orphaned)
+            {
+                QueueForBuildAndInitialization();
+            }
         }
 
         void Pass::RemoveFromParent()
@@ -154,7 +159,7 @@ namespace AZ
             AZ_RPI_PASS_ASSERT(m_parent != nullptr, "Trying to remove pass from parent but pointer to the parent pass is null.");
             m_parent->RemoveChild(Ptr<Pass>(this));
             m_queueState = PassQueueState::NoQueue;
-            m_state = PassState::Idle;
+            m_state = PassState::Orphaned;
         }
 
         void Pass::OnOrphan()
@@ -162,6 +167,8 @@ namespace AZ
             m_parent = nullptr;
             m_flags.m_partOfHierarchy = false;
             m_treeDepth = 0;
+            m_queueState = PassQueueState::NoQueue;
+            m_state = PassState::Orphaned;
         }
 
         // --- Getters & Setters ---