make some edit to post procesing work

Assets/Scenes/SampleScene.unity

@@ -263,7 +263,7 @@ MeshRenderer:
   m_RenderingLayerMask: 1
   m_RendererPriority: 0
   m_Materials:
-  - {fileID: 10303, guid: 0000000000000000f000000000000000, type: 0}
+  - {fileID: 10302, guid: 0000000000000000f000000000000000, type: 0}
   m_StaticBatchInfo:
     firstSubMesh: 0
     subMeshCount: 0
@@ -306,6 +306,54 @@ Transform:
   m_Father: {fileID: 0}
   m_RootOrder: 2
   m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
+--- !u!1 &1355290782
+GameObject:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  serializedVersion: 6
+  m_Component:
+  - component: {fileID: 1355290784}
+  - component: {fileID: 1355290783}
+  m_Layer: 8
+  m_Name: PPV
+  m_TagString: Untagged
+  m_Icon: {fileID: 0}
+  m_NavMeshLayer: 0
+  m_StaticEditorFlags: 0
+  m_IsActive: 1
+--- !u!114 &1355290783
+MonoBehaviour:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1355290782}
+  m_Enabled: 1
+  m_EditorHideFlags: 0
+  m_Script: {fileID: 11500000, guid: 8b9a305e18de0c04dbd257a21cd47087, type: 3}
+  m_Name: 
+  m_EditorClassIdentifier: 
+  sharedProfile: {fileID: 11400000, guid: 45c620574ff0f6043888e8f692caf52b, type: 2}
+  isGlobal: 1
+  blendDistance: 0
+  weight: 1
+  priority: 0
+--- !u!4 &1355290784
+Transform:
+  m_ObjectHideFlags: 0
+  m_CorrespondingSourceObject: {fileID: 0}
+  m_PrefabInstance: {fileID: 0}
+  m_PrefabAsset: {fileID: 0}
+  m_GameObject: {fileID: 1355290782}
+  m_LocalRotation: {x: 0, y: 0, z: 0, w: 1}
+  m_LocalPosition: {x: 0, y: 0, z: 0}
+  m_LocalScale: {x: 1, y: 1, z: 1}
+  m_Children: []
+  m_Father: {fileID: 0}
+  m_RootOrder: 3
+  m_LocalEulerAnglesHint: {x: 0, y: 0, z: 0}
 --- !u!1001 &8667386837891276950
 PrefabInstance:
   m_ObjectHideFlags: 0
@@ -376,7 +424,7 @@ PrefabInstance:
     - target: {fileID: 8688770579720177661, guid: 4f1a4eb0e633f7740b9c4928cf54ce35,
         type: 3}
       propertyPath: volumeLayer.m_Bits
-      value: 0
+      value: 256
       objectReference: {fileID: 0}
     m_RemovedComponents: []
   m_SourcePrefab: {fileID: 100100000, guid: 4f1a4eb0e633f7740b9c4928cf54ce35, type: 3}