insert: Traced Mode inspector section and .vpe keyword restore

Editor/HdrpMaterialTranslator.cs

@@ -263,7 +263,8 @@ private static VpeInsertShaderProfile TranslateInsertShader(Material material, C
 						break;
 					case ShaderPropertyType.Texture:
 						property.Kind = "texture";
-						var optical = name is "_OpticalNormalMap" or "_OpticalResponseMap";
+						// The Traced mode's maps are data too: HDR light, facet normals.
+						var optical = name is "_OpticalNormalMap" or "_OpticalResponseMap" || name.StartsWith("_Traced", StringComparison.Ordinal);
 						var linear = optical || name is "_NormalMap" or "_CoverNormalMap";
 						property.Texture = ctx.CaptureSideChannelTextureRef(material, name,
 							name == "_OpticalResponseMap" ? ResponseColorSpace(material.GetTexture(name))

Editor/Insert/InsertHybridGUI.cs

@@ -47,6 +47,7 @@ public InsertHybridGUI()
 			uiBlocks.Insert(index, new PlasticBlock());
 			uiBlocks.Insert(index + 1, new LampBlock());
 			uiBlocks.Insert(index + 2, new BakeBlock());
+			uiBlocks.Insert(index + 3, new TracedModeBlock());
 		}
 
 		/// <summary>
@@ -710,4 +711,39 @@ private void Texture(GUIContent label, string name)
 			}
 		}
 	}
+
+	/// <summary>
+	/// The opt-in Traced mode: the body's glow from an offline render of the
+	/// insert instead of the optical response map, the bulb still refracted
+	/// live. Everything above stays in charge of colour and brightness. The
+	/// controls and their words are <see cref="InsertTracedFields"/>, shared
+	/// with URP.
+	/// </summary>
+	internal sealed class TracedModeBlock : InsertBlock
+	{
+		public TracedModeBlock() : base(ExpandableBit.User3, InsertTracedFields.Title) { }
+
+		protected override void Draw()
+		{
+			Field(InsertTracedFields.Keyword, InsertTracedFields.KeywordLabel.text, InsertTracedFields.KeywordLabel.tooltip);
+			var on = materials.All(material => material.IsKeywordEnabled(InsertTracedFields.Keyword));
+			if (!on) {
+				return;
+			}
+			EditorGUILayout.HelpBox(InsertTracedFields.Note, MessageType.None);
+			foreach (var section in InsertTracedFields.Sections) {
+				SubHeader(section.Title);
+				foreach (var entry in section.Entries) {
+					if (entry.IsTexture) {
+						var property = FindProperty(entry.Name);
+						if (property != null) {
+							materialEditor.TexturePropertySingleLine(entry.Label, property);
+						}
+					} else {
+						Field(entry.Name, entry.Label.text, entry.Label.tooltip);
+					}
+				}
+			}
+		}
+	}
 }

Runtime/HdrpMaterialResolver.cs

@@ -178,9 +178,24 @@ private Material BuildInsertShaderMaterial(string name, VpeInsertShaderProfile p
 			// The keywords come with the template: rebuilt from the restored values, so a cover
 			// without refraction doesn't keep the template's.
 			HDMaterial.ValidateMaterial(material);
+			InsertTracedKeyword(material);
 			return material;
 		}
 
+		/// <summary>
+		/// The insert's opt-in Traced mode travels as its toggle's value; nothing
+		/// at runtime turns that back into the keyword.
+		/// </summary>
+		private static void InsertTracedKeyword(Material material)
+		{
+			if (!material.HasProperty("_INSERT_TRACED")) { return; }
+			if (material.GetFloat("_INSERT_TRACED") > 0.5f) {
+				material.EnableKeyword("_INSERT_TRACED");
+			} else {
+				material.DisableKeyword("_INSERT_TRACED");
+			}
+		}
+
 		private Material BuildShaderGraphMaterial(VpeMaterialProfile profile, VpeShaderGraphProfile shaderGraph)
 		{
 			var templateName = shaderGraph?.TemplateName;