diff --git a/Assets/VRM/Editor/Format/VRMEditorExporter.cs b/Assets/VRM/Editor/Format/VRMEditorExporter.cs
index c4489d7a4..6e48f7d88 100644
--- a/Assets/VRM/Editor/Format/VRMEditorExporter.cs
+++ b/Assets/VRM/Editor/Format/VRMEditorExporter.cs
@@ -16,12 +16,17 @@ namespace VRM
         /// </summary>
         /// <param name="path">出力先</param>
         /// <param name="settings">エクスポート設定</param>
-        public static byte[] Export(GameObject exportRoot, VRMMetaObject meta, VRMExportSettings settings)
+        public static byte[] Export(
+            GameObject exportRoot,
+            VRMMetaObject meta,
+            VRMExportSettings settings,
+            IMaterialExporter materialExporter = null
+        )
         {
             List<GameObject> destroy = new List<GameObject>();
             try
             {
-                return Export(exportRoot, meta, settings, destroy);
+                return Export(exportRoot, meta, settings, materialExporter, destroy);
             }
             finally
             {
@@ -143,9 +148,12 @@ namespace VRM
         /// <param name="path"></param>
         /// <param name="settings"></param>
         /// <param name="destroy">作業が終わったらDestoryするべき一時オブジェクト</param>
-        static byte[] Export(GameObject exportRoot, VRMMetaObject meta,
-                    VRMExportSettings settings,
-                    List<GameObject> destroy)
+        private static byte[] Export(
+            GameObject exportRoot,
+            VRMMetaObject meta,
+            VRMExportSettings settings,
+            IMaterialExporter materialExporter,
+            List<GameObject> destroy)
         {
             var target = exportRoot;
 
@@ -227,6 +235,7 @@ namespace VRM
             var gltfExportSettings = settings.GltfExportSettings;
             using (var exporter = new VRMExporter(data, gltfExportSettings,
                 animationExporter: settings.KeepAnimation ? new EditorAnimationExporter() : null,
+                materialExporter: materialExporter,
                 textureSerializer: new EditorTextureSerializer()))
             {
                 exporter.Prepare(target);
diff --git a/Assets/VRM/Tests/SampleTests/VRMImportExportTests.cs b/Assets/VRM/Tests/SampleTests/VRMImportExportTests.cs
index 9cf0e3591..d0ce6b581 100644
--- a/Assets/VRM/Tests/SampleTests/VRMImportExportTests.cs
+++ b/Assets/VRM/Tests/SampleTests/VRMImportExportTests.cs
@@ -33,9 +33,11 @@ namespace VRM.Samples
         public void ImportExportTest()
         {
             var path = AliciaPath;
-            using (var data = new GlbFileParser(path).Parse())
-            using (var context = new VRMImporterContext(new VRMData(data)))
-            using (var loaded = context.Load())
+            using var data = new GlbFileParser(path).Parse();
+            var vrmData = new VRMData(data);
+            var materialGenerator = new BuiltInVrmMaterialDescriptorGenerator(vrmData.VrmExtension);
+            using var context = new VRMImporterContext(vrmData, materialGenerator: materialGenerator);
+            using var loaded = context.Load();
             {
                 loaded.ShowMeshes();
                 loaded.EnableUpdateWhenOffscreen();
@@ -126,9 +128,11 @@ namespace VRM.Samples
         public void MeshCopyTest()
         {
             var path = AliciaPath;
-            using (var data = new GlbFileParser(path).Parse())
-            using (var context = new VRMImporterContext(new VRMData(data)))
-            using (var loaded = context.Load())
+            using var data = new GlbFileParser(path).Parse();
+            var vrmData = new VRMData(data);
+            var materialGenerator = new BuiltInVrmMaterialDescriptorGenerator(vrmData.VrmExtension);
+            using var context = new VRMImporterContext(vrmData, materialGenerator: materialGenerator);
+            using var loaded = context.Load();
             {
                 loaded.ShowMeshes();
                 loaded.EnableUpdateWhenOffscreen();
@@ -147,8 +151,10 @@ namespace VRM.Samples
             // Aliciaを古いデシリアライザでロードする
             var path = AliciaPath;
 
-            using (var data = new GlbFileParser(path).Parse())
-            using (var context = new VRMImporterContext(new VRMData(data)))
+            using var data = new GlbFileParser(path).Parse();
+            var vrmData = new VRMData(data);
+            var materialGenerator = new BuiltInVrmMaterialDescriptorGenerator(vrmData.VrmExtension);
+            using var context = new VRMImporterContext(vrmData, materialGenerator: materialGenerator);
             {
                 var oldJson = context.GLTF.ToJson().ParseAsJson().ToString("  ");
 
diff --git a/Assets/VRM/Tests/TestVrm0X.cs b/Assets/VRM/Tests/TestVrm0X.cs
new file mode 100644
index 000000000..6f99e905d
--- /dev/null
+++ b/Assets/VRM/Tests/TestVrm0X.cs
@@ -0,0 +1,32 @@
+using UniGLTF;
+using UnityEngine;
+
+namespace VRM
+{
+    public static class TestVrm0X
+    {
+        public static RuntimeGltfInstance LoadBytesAsBuiltInRP(byte[] bytes)
+        {
+            return VrmUtility.LoadBytesAsync(
+                "",
+                bytes,
+                awaitCaller: new ImmediateCaller(),
+                materialGeneratorCallback: x => new BuiltInVrmMaterialDescriptorGenerator(x)
+            ).Result;
+        }
+
+        public static RuntimeGltfInstance LoadPathAsBuiltInRP(string path)
+        {
+            return VrmUtility.LoadAsync(
+                path,
+                awaitCaller: new ImmediateCaller(),
+                materialGeneratorCallback: x => new BuiltInVrmMaterialDescriptorGenerator(x)
+            ).Result;
+        }
+
+        public static byte[] ExportAsBuiltInRP(GameObject gameObject, VRMExportSettings exportSettings)
+        {
+            return VRMEditorExporter.Export(gameObject, null, exportSettings, new BuiltInVrmMaterialExporter());
+        }
+    }
+}
\ No newline at end of file
diff --git a/Assets/VRM/Tests/TestVrm0X.cs.meta b/Assets/VRM/Tests/TestVrm0X.cs.meta
new file mode 100644
index 000000000..32d715a00
--- /dev/null
+++ b/Assets/VRM/Tests/TestVrm0X.cs.meta
@@ -0,0 +1,3 @@
+fileFormatVersion: 2
+guid: 47b1209d83114ccbaa0bf02436b8eb04
+timeCreated: 1722265572
\ No newline at end of file
diff --git a/Assets/VRM/Tests/VRMLookAtTests.cs b/Assets/VRM/Tests/VRMLookAtTests.cs
index a9a07b4a3..40d9424aa 100644
--- a/Assets/VRM/Tests/VRMLookAtTests.cs
+++ b/Assets/VRM/Tests/VRMLookAtTests.cs
@@ -21,11 +21,8 @@ namespace VRM
         [Test]
         public void VRMLookAtTest()
         {
-            var data = new GlbFileParser(AliciaPath).Parse();
             byte[] bytes = default;
-            using (data)
-            using (var loader = new VRMImporterContext(new VRMData(data)))
-            using (var loaded = loader.Load())
+            using var loaded = TestVrm0X.LoadPathAsBuiltInRP(AliciaPath);
             {
                 loaded.ShowMeshes();
 
@@ -35,12 +32,12 @@ namespace VRM
                 var lookAt = go.AddComponent<VRMLookAtBlendShapeApplyer>();
                 var settings = (VRMExportSettings)ScriptableObject.CreateInstance<VRMExportSettings>();
                 settings.PoseFreeze = true;
-                    bytes = VRMEditorExporter.Export(go, null, settings);
-                }
+                bytes = TestVrm0X.ExportAsBuiltInRP(go, settings);
+            }
 
-            using (var data2 = new GlbLowLevelParser(AliciaPath, bytes).Parse())
-            using (var loader2 = new VRMImporterContext(new VRMData(data2)))
             {
+                using var data2 = new GlbLowLevelParser(AliciaPath, bytes).Parse();
+                using var loader2 = new VRMImporterContext(new VRMData(data2));
                 Assert.AreEqual(LookAtType.BlendShape, loader2.VRM.firstPerson.lookAtType);
             }
         }
@@ -48,13 +45,10 @@ namespace VRM
         [Test]
         public void VRMLookAtCurveMapWithFreezeTest()
         {
-            var data = new GlbFileParser(AliciaPath).Parse();
-            byte[] bytes = default;
+            byte[] bytes;
             CurveMapper horizontalInner = default;
-            using (data)
-            using (var loader = new VRMImporterContext(new VRMData(data)))
-            using (var loaded = loader.Load())
             {
+                using var loaded = TestVrm0X.LoadPathAsBuiltInRP(AliciaPath);
                 loaded.ShowMeshes();
 
                 var go = loaded.gameObject;
@@ -63,13 +57,11 @@ namespace VRM
                 horizontalInner = lookAt.HorizontalInner;
                 var settings = ScriptableObject.CreateInstance<VRMExportSettings>();
                 settings.PoseFreeze = true;
-                bytes = VRMEditorExporter.Export(go, null, settings);
+                bytes = TestVrm0X.ExportAsBuiltInRP(go, settings);
             }
 
-            using (var data2 = new GlbLowLevelParser(AliciaPath, bytes).Parse())
-            using (var loader = new VRMImporterContext(new VRMData(data2)))
-            using (var loaded = loader.Load())
             {
+                using var loaded = TestVrm0X.LoadBytesAsBuiltInRP(bytes);
                 loaded.ShowMeshes();
 
                 var lookAt = loaded.GetComponent<VRMLookAtBoneApplyer>();
@@ -81,13 +73,10 @@ namespace VRM
         [Test]
         public void VRMLookAtCurveMapTest()
         {
-            var data = new GlbFileParser(AliciaPath).Parse();
-            byte[] bytes = default;
+            byte[] bytes;
             CurveMapper horizontalInner = default;
-            using (data)
-            using (var loader = new VRMImporterContext(new VRMData(data)))
-            using (var loaded = loader.Load())
             {
+                using var loaded = TestVrm0X.LoadPathAsBuiltInRP(AliciaPath);
                 loaded.ShowMeshes();
 
                 var go = loaded.gameObject;
@@ -96,13 +85,11 @@ namespace VRM
                 horizontalInner = lookAt.HorizontalInner;
                 var settings = (VRMExportSettings)ScriptableObject.CreateInstance<VRMExportSettings>();
                 settings.PoseFreeze = false;
-                bytes = VRMEditorExporter.Export(go, null, settings);
+                bytes = TestVrm0X.ExportAsBuiltInRP(go, settings);
             }
 
-            using (var data2 = new GlbLowLevelParser(AliciaPath, bytes).Parse())
-            using (var loader = new VRMImporterContext(new VRMData(data2)))
-            using (var loaded = loader.Load())
             {
+                using var loaded = TestVrm0X.LoadBytesAsBuiltInRP(bytes);
                 loaded.ShowMeshes();
 
                 var lookAt = loaded.GetComponent<VRMLookAtBoneApplyer>();
diff --git a/Assets/VRM/Tests/VrmDividedMeshTests.cs b/Assets/VRM/Tests/VrmDividedMeshTests.cs
index 543b10486..658cda4eb 100644
--- a/Assets/VRM/Tests/VrmDividedMeshTests.cs
+++ b/Assets/VRM/Tests/VrmDividedMeshTests.cs
@@ -67,13 +67,21 @@ namespace VRM
             var path = AliciaPath;
             var loaded = Load(File.ReadAllBytes(path), path);
 
-            var exported = VRMExporter.Export(new UniGLTF.GltfExportSettings
+            var exportSettings = new GltfExportSettings
             {
                 DivideVertexBuffer = true, // test this
                 ExportOnlyBlendShapePosition = true,
                 ExportTangents = false,
                 UseSparseAccessorForMorphTarget = true,
-            }, loaded, new EditorTextureSerializer());
+            };
+            var exported = new ExportingGltfData();
+            using var exporter = new VRMExporter(
+                exported,
+                exportSettings,
+                textureSerializer: new EditorTextureSerializer(),
+                materialExporter: new BuiltInVrmMaterialExporter());
+            exporter.Prepare(loaded);
+            exporter.Export();
             var bytes = exported.ToGlbBytes();
             var divided = Load(bytes, path);