Fixed blend distance editing (1248931) (#838)

Co-authored-by: sebastienlagarde <sebastien@unity3d.com>

Author: fredericv-unity3d

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

@@ -676,6 +676,7 @@ and this project adheres to [Semantic Versioning](http://semver.org/spec/v2.0.0.
 - Fixing the internsity being applied to RTAO too early leading to unexpected results (1254626).
 - Fix issue that caused sky to incorrectly render when using a custom projection matrix.
 - Fixed null reference exception when using depth pre/post pass in shadergraph with alpha clip in the material.
+- Appropriately constraint blend distance of reflection probe while editing with the inspector (case 1248931)
 
 ### Changed
 - Improve MIP selection for decals on Transparents

com.unity.render-pipelines.high-definition/Editor/Lighting/Reflection/HDProbeUI.Drawers.cs

@@ -233,7 +233,6 @@ public static void DrawCustomSettings(SerializedHDProbe serialized, Editor owner
 
             public static void DrawInfluenceSettings(SerializedHDProbe serialized, Editor owner)
             {
-                var provider = new TProvider();
                 InfluenceVolumeUI.Draw<TProvider>(serialized.probeSettings.influence, owner);
             }
 

com.unity.render-pipelines.high-definition/Editor/Lighting/Reflection/Volume/InfluenceVolumeUI.Drawers.cs

@@ -173,18 +173,10 @@ static void Drawer_AdvancedBlendDistance(SerializedInfluenceVolume serialized, b
             }
             else
             {
-                float scalar = editorSimplifiedModeBlendDistance.floatValue;
-                if (!(Mathf.Approximately(blendDistancePositive.vector3Value.x, scalar)
-                    && Mathf.Approximately(blendDistancePositive.vector3Value.y, scalar)
-                    && Mathf.Approximately(blendDistancePositive.vector3Value.z, scalar)
-                    && Mathf.Approximately(blendDistanceNegative.vector3Value.x, scalar)
-                    && Mathf.Approximately(blendDistanceNegative.vector3Value.y, scalar)
-                    && Mathf.Approximately(blendDistanceNegative.vector3Value.z, scalar)))
-                {
-                    blendDistancePositive.vector3Value = blendDistanceNegative.vector3Value = new Vector3(scalar, scalar, scalar);
-                    serialized.Apply();
-                    SceneView.RepaintAll(); //update gizmo
-                }
+                var scalar = Mathf.Min(editorSimplifiedModeBlendDistance.floatValue, Mathf.Min(maxBlendDistance.x, maxBlendDistance.y, maxBlendDistance.z));
+                blendDistancePositive.vector3Value = blendDistanceNegative.vector3Value = new Vector3(scalar, scalar, scalar);
+                serialized.Apply();
+                SceneView.RepaintAll(); //update gizmo
             }
 
             if (serialized.editorAdvancedModeEnabled.boolValue)