[APV] Scenario blending improvements (#7198)

* Separate memory budget enum

* Give control over blending factor

* Allow SRP with no compute support

* Added debug mode for scenario blending

* Blending runtime test

* reviews

* Fix test

* fix formatting

* Fix renaming, hide active scenario from debug, fix test

TestProjects/HDRP_RuntimeTests/Assets/HDRPDefaultResources/HDRenderPipelineGlobalSettings.asset

@@ -166,5 +166,6 @@ MonoBehaviour:
           searchMultiplier: 0.2
       profile: {fileID: 11400000, guid: c70ba2f8270ecc54fa63963d2f32413d, type: 2}
       lightingScenarios:
-      - Default
+      - Scenario 1
+      - Scenario 2
   m_Version: 3

TestProjects/HDRP_RuntimeTests/Assets/Scenes/007-BasicAPV.unity

@@ -1537,6 +1537,238 @@ Transform:
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   cellSupportDataAsset: {fileID: 4900000, guid: acb4ae6ad947b73478110ec6f398e997,
     type: 3}
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       cellOptionalDataAsset: {fileID: 4900000, guid: 777185668354240419006bd3f247492e,
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TestProjects/HDRP_RuntimeTests/Assets/Scenes/007-BasicAPV/LightScenario.cs

@@ -0,0 +1,50 @@
+using UnityEngine;
+using UnityEngine.Rendering;
+
+#if UNITY_EDITOR
+using UnityEditor;
+#endif
+
+[ExecuteAlways]
+public class LightScenario : MonoBehaviour
+{
+    const string scenario1 = "Scenario 1";
+    const string scenario2 = "Scenario 2";
+
+    public Color scenario1Color = Color.red;
+    public Color scenario2Color = Color.green;
+
+    void OnEnable()
+    {
+#if UNITY_EDITOR
+        Lightmapping.bakeStarted += SetupLight;
+#else
+        // Ensure Light is baked and not coming from realtime
+        if (Application.isPlaying)
+            GetComponent<Light>().enabled = false;
+#endif
+    }
+
+    private void Update()
+    {
+        if (Application.isPlaying && ProbeReferenceVolume.instance.isInitialized)
+        {
+            ProbeReferenceVolume.instance.SetNumberOfCellsLoadedPerFrame(100);
+            ProbeReferenceVolume.instance.lightingScenario = scenario1;
+            ProbeReferenceVolume.instance.BlendLightingScenario(scenario2, 0.5f);
+        }
+    }
+
+#if UNITY_EDITOR
+    void OnDisable()
+    {
+        Lightmapping.bakeStarted -= SetupLight;
+    }
+
+    void SetupLight()
+    {
+        var color = ProbeReferenceVolume.instance.lightingScenario == scenario1 ? scenario1Color : scenario2Color;
+        GetComponent<Light>().color = color;
+    }
+#endif
+}

com.unity.render-pipelines.core/CHANGELOG.md

@@ -16,6 +16,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Added error on ResourceReloader when attempting to use [ReloadGroup] on ScriptableObject.
 - Added Screen Coordinates Override shader utilities.
 - Added API to blend between baking states for Probe Volumes.
+- Aded explicit control over scenario blending factor and a debug mode for visualization.
 
 ### Changed
 - Volume Component editor are now specified by `CustomEditorAttribute` instead of `VolumeComponentEditorAttribute`.