diff --git a/Chapter8/Chapter8.xcodeproj/project.pbxproj b/Chapter8/Chapter8.xcodeproj/project.pbxproj
index 61f15f7..e501980 100644
--- a/Chapter8/Chapter8.xcodeproj/project.pbxproj
+++ b/Chapter8/Chapter8.xcodeproj/project.pbxproj
@@ -18,6 +18,7 @@
 		C3E575212BF1C633004E3EDC /* SceneReconstruction.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3E575202BF1C633004E3EDC /* SceneReconstruction.swift */; };
 		C3E575232BF1D739004E3EDC /* WorldTracking.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3E575222BF1D739004E3EDC /* WorldTracking.swift */; };
 		C3E575252BF1FFD9004E3EDC /* ImageTracking.swift in Sources */ = {isa = PBXBuildFile; fileRef = C3E575242BF1FFD9004E3EDC /* ImageTracking.swift */; };
+		C82B73A22C756EAD00D36A38 /* MeshResourceExtension.swift in Sources */ = {isa = PBXBuildFile; fileRef = C82B73A12C756EAD00D36A38 /* MeshResourceExtension.swift */; };
 /* End PBXBuildFile section */
 
 /* Begin PBXFileReference section */
@@ -34,6 +35,7 @@
 		C3E575202BF1C633004E3EDC /* SceneReconstruction.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = SceneReconstruction.swift; sourceTree = "<group>"; };
 		C3E575222BF1D739004E3EDC /* WorldTracking.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = WorldTracking.swift; sourceTree = "<group>"; };
 		C3E575242BF1FFD9004E3EDC /* ImageTracking.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = ImageTracking.swift; sourceTree = "<group>"; };
+		C82B73A12C756EAD00D36A38 /* MeshResourceExtension.swift */ = {isa = PBXFileReference; lastKnownFileType = sourcecode.swift; path = MeshResourceExtension.swift; sourceTree = "<group>"; };
 /* End PBXFileReference section */
 
 /* Begin PBXFrameworksBuildPhase section */
@@ -76,6 +78,7 @@
 				C3E575202BF1C633004E3EDC /* SceneReconstruction.swift */,
 				C3E5751C2BF11433004E3EDC /* HandTracking.swift */,
 				C3E575222BF1D739004E3EDC /* WorldTracking.swift */,
+				C82B73A12C756EAD00D36A38 /* MeshResourceExtension.swift */,
 				C3E575112BEF6563004E3EDC /* Assets.xcassets */,
 				C3E575162BEF6563004E3EDC /* Info.plist */,
 				C3E575132BEF6563004E3EDC /* Preview Content */,
@@ -174,6 +177,7 @@
 			files = (
 				C3E575212BF1C633004E3EDC /* SceneReconstruction.swift in Sources */,
 				C3E5750E2BEF6562004E3EDC /* ContentView.swift in Sources */,
+				C82B73A22C756EAD00D36A38 /* MeshResourceExtension.swift in Sources */,
 				C3E5750C2BEF6562004E3EDC /* Chapter8App.swift in Sources */,
 				C3E5751F2BF1145F004E3EDC /* ShootingLogic.swift in Sources */,
 				C3E575252BF1FFD9004E3EDC /* ImageTracking.swift in Sources */,
diff --git a/Chapter8/Chapter8/MeshResourceExtension.swift b/Chapter8/Chapter8/MeshResourceExtension.swift
new file mode 100644
index 0000000..c0bb521
--- /dev/null
+++ b/Chapter8/Chapter8/MeshResourceExtension.swift
@@ -0,0 +1,51 @@
+//
+//  MeshResourceExtension.swift
+//  Chapter8
+//
+//  Created by 鷲尾友人 on 2024/07/06.
+//
+
+import RealityKit
+import ARKit
+
+// 下記サイトを参考に作成。
+// https://forums.developer.apple.com/forums/thread/749759
+// https://zenn.dev/shu223/articles/visionos_scenemesh
+// https://github.com/XRealityZone/what-vision-os-can-do/blob/main/WhatVisionOSCanDo/Extension/GeometrySource.swift
+
+extension MeshResource.Contents {
+    init(geom: MeshAnchor.Geometry) {
+        self.init()
+        self.instances = [MeshResource.Instance(id: "main", model: "model")]
+        var part = MeshResource.Part(id: "part", materialIndex: 0)
+        part.positions = MeshBuffer(geom.vertices.asSIMD3(ofType: Float.self))
+        part.normals = MeshBuffer(geom.normals.asSIMD3(ofType: Float.self))
+        part.triangleIndices =
+            MeshBuffer(geom.faces.asArray(ofType: UInt32.self))
+        self.models = [MeshResource.Model(id: "model", parts: [part])]
+    }
+}
+
+extension GeometrySource {
+    func asArray<T>(ofType: T.Type) -> [T] {
+        assert(MemoryLayout<T>.stride == stride)
+        return (0 ..< self.count).map {
+            buffer.contents().advanced(by: offset + stride * Int($0))
+                .assumingMemoryBound(to: T.self).pointee
+        }
+    }
+
+    func asSIMD3<T>(ofType: T.Type) -> [SIMD3<T>] {
+        return asArray(ofType: (T, T, T).self).map { .init($0.0, $0.1, $0.2) }
+    }
+}
+
+extension GeometryElement {
+    func asArray<T>(ofType: T.Type) -> [T] {
+        assert(MemoryLayout<T>.stride == bytesPerIndex)
+        return (0 ..< self.count * self.primitive.indexCount).map {
+            buffer.contents().advanced(by: bytesPerIndex * Int($0))
+                .assumingMemoryBound(to: T.self).pointee
+        }
+    }
+}
diff --git a/Chapter8/Chapter8/SceneReconstruction.swift b/Chapter8/Chapter8/SceneReconstruction.swift
index f6761a9..f42b201 100644
--- a/Chapter8/Chapter8/SceneReconstruction.swift
+++ b/Chapter8/Chapter8/SceneReconstruction.swift
@@ -33,11 +33,17 @@ class SceneReconstruction: ObservableObject {
             // 障害物用のメッシュを作成
             guard let shape = try? await ShapeResource
                 .generateStaticMesh(from: meshAnchor) else { continue }
+            guard let mesh = try? await MeshResource(
+                from: MeshResource.Contents(geom: meshAnchor.geometry)
+            ) else { continue }
             switch update.event {
             // 障害物が新規に追加された場合
             case .added:
-                // 追加された物体から障害物 Entity を作成、物理演算機能を追加
-                let entity = ModelEntity()
+                // 追加された物体から障害物 Entity を作成、隠面処理と物理演算機能を追加
+                let entity = ModelEntity(
+                    mesh: mesh,
+                    materials: [OcclusionMaterial()]
+                )
                 entity.transform = Transform(
                     matrix: meshAnchor.originFromAnchorTransform
                 )
@@ -54,6 +60,7 @@ class SceneReconstruction: ObservableObject {
             case .updated:
                 // 物体の id を取得して形状と位置を更新
                 guard let entity = meshEntities[meshAnchor.id] else { continue }
+                entity.model?.mesh = mesh
                 entity.transform = Transform(
                     matrix: meshAnchor.originFromAnchorTransform
                 )