Allow CACAO shadow multiplier to be modified at run-time through the project settings

com.unity.render-pipelines.high-definition/Editor/Lighting/ScreenSpaceAmbientOcclusionEditor.cs

@@ -17,6 +17,7 @@ namespace UnityEditor.Rendering.HighDefinition
         SerializedDataParameter m_Radius;
         SerializedDataParameter m_FullResolution;
         SerializedDataParameter m_MaximumRadiusInPixels;
+        SerializedDataParameter m_ShadowMultiplier;
         SerializedDataParameter m_DirectLightingStrength;
         SerializedDataParameter m_SpatialBilateralAggressiveness;
 
@@ -54,6 +55,7 @@ namespace UnityEditor.Rendering.HighDefinition
             m_Radius = Unpack(o.Find(x => x.radius));
             m_FullResolution = Unpack(o.Find("m_FullResolution"));
             m_MaximumRadiusInPixels = Unpack(o.Find("m_MaximumRadiusInPixels"));
+            m_ShadowMultiplier = Unpack(o.Find(x => x.shadowMultiplier));
 
             m_TemporalAccumulation = Unpack(o.Find(x => x.temporalAccumulation));
             m_DirectionCount = Unpack(o.Find("m_DirectionCount"));
@@ -84,6 +86,7 @@ namespace UnityEditor.Rendering.HighDefinition
             public static readonly GUIContent useCacao = EditorGUIUtility.TrTextContent("Use FidelityFX CACAO", "Enable FidelityFX CACAO ambient occlusion technique."); 
             public static readonly GUIContent intesity = EditorGUIUtility.TrTextContent("Intensity", "Controls the strength of the ambient occlusion effect. Increase this value to produce darker areas.");
             public static readonly GUIContent directLightingStrenght = EditorGUIUtility.TrTextContent("Direct Lighting Strength", "Controls how much the ambient light affects occlusion.");
+            public static readonly GUIContent shadowMultiplier = EditorGUIUtility.TrTextContent("Shadow Multiplier", "Controls the multiplier for the shadow values.");
             public static readonly GUIContent layerMask = EditorGUIUtility.TrTextContent("Layer Mask", "Layer mask used to include the objects for ambient occlusion.");
             static public readonly GUIContent specularOcclusion = EditorGUIUtility.TrTextContent("Specular Occlusion", "Controls the influence of the ambient occlusion on the specular occlusion. Increase this value to reduce the amount of specular leaking in occluded areas.");
             public static readonly GUIContent maxRayLength = EditorGUIUtility.TrTextContent("Max Ray Length", "Controls the maximal length of ambient occlusion rays. The higher this value is, the more expensive ray traced ambient occlusion is.");
@@ -164,6 +167,7 @@ namespace UnityEditor.Rendering.HighDefinition
             else // TODO: add separate settings for CACAO
             {
                 PropertyField(m_Radius, Styles.radius);
+                PropertyField(m_ShadowMultiplier, Styles.shadowMultiplier);
 
                 base.OnInspectorGUI(); // Quality Setting
 

com.unity.render-pipelines.high-definition/Runtime/Lighting/ScreenSpaceLighting/HDRenderPipeline.AmbientOcclusion.cs

@@ -167,6 +167,7 @@ namespace UnityEngine.Rendering.HighDefinition
                         };
 
                         cacaoParameters.settings.radius = settings.radius.value;
+                        cacaoParameters.settings.shadowMultiplier = settings.shadowMultiplier.value;
                         cacaoParameters.settings.shadowPower = settings.intensity.value;
                     
                         result = RenderCacao(renderGraph, cacaoParameters, depthBuffer, normalBuffer);

com.unity.render-pipelines.high-definition/Runtime/Lighting/ScreenSpaceLighting/ScreenSpaceAmbientOcclusion.cs

@@ -36,6 +36,8 @@ namespace UnityEngine.Rendering.HighDefinition
         /// </summary>
         public ClampedFloatParameter radius = new ClampedFloatParameter(2.0f, 0.25f, 5.0f);
 
+        public ClampedFloatParameter shadowMultiplier = new ClampedFloatParameter(1.0f, 0.0f, 5.0f);
+
         /// <summary>
         /// Moving this factor closer to 0 will increase the amount of accepted samples during temporal accumulation, increasing the ghosting, but reducing the temporal noise.
         /// </summary>