diff --git a/packages/core/src/graphic/BufferUtil.ts b/packages/core/src/graphic/BufferUtil.ts
index 23e7adb37..f9faa8fa0 100644
--- a/packages/core/src/graphic/BufferUtil.ts
+++ b/packages/core/src/graphic/BufferUtil.ts
@@ -1,7 +1,7 @@
-import { BufferUsage } from "./enums/BufferUsage";
-import { VertexElementFormat } from "./enums/VertexElementFormat";
 import { DataType } from "../base/Constant";
+import { BufferUsage } from "./enums/BufferUsage";
 import { IndexFormat } from "./enums/IndexFormat";
+import { VertexElementFormat } from "./enums/VertexElementFormat";
 
 export interface ElementInfo {
   size: number;
@@ -21,7 +21,7 @@ export class BufferUtil {
     }
   }
 
-  static _getGLIndexByteCount(indexFormat: IndexFormat): DataType {
+  static _getGLIndexByteCount(indexFormat: IndexFormat): number {
     switch (indexFormat) {
       case IndexFormat.UInt8:
         return 1;
diff --git a/packages/loader/src/gltf/extensions/GALACEAN_materials_remap.ts b/packages/loader/src/gltf/extensions/GALACEAN_materials_remap.ts
new file mode 100644
index 000000000..7898b72a5
--- /dev/null
+++ b/packages/loader/src/gltf/extensions/GALACEAN_materials_remap.ts
@@ -0,0 +1,17 @@
+import { Material } from "@galacean/engine-core";
+import { registerGLTFExtension } from "../parser/GLTFParser";
+import { GLTFParserContext } from "../parser/GLTFParserContext";
+import { GLTFExtensionMode, GLTFExtensionParser } from "./GLTFExtensionParser";
+import { IGalaceanMaterialRemap } from "./GLTFExtensionSchema";
+
+@registerGLTFExtension("GALACEAN_materials_remap", GLTFExtensionMode.CreateAndParse)
+class GALACEAN_materials_remap extends GLTFExtensionParser {
+  /**
+   * @override
+   */
+  createAndParse(context: GLTFParserContext, schema: IGalaceanMaterialRemap): Promise<Material> {
+    const { engine } = context.glTFResource;
+    // @ts-ignore
+    return engine.resourceManager.getResourceByRef<Material>(schema);
+  }
+}
diff --git a/packages/loader/src/gltf/extensions/Galacean_materials_remap.ts b/packages/loader/src/gltf/extensions/Galacean_materials_remap.ts
index 66b696d0d..7898b72a5 100644
--- a/packages/loader/src/gltf/extensions/Galacean_materials_remap.ts
+++ b/packages/loader/src/gltf/extensions/Galacean_materials_remap.ts
@@ -4,8 +4,8 @@ import { GLTFParserContext } from "../parser/GLTFParserContext";
 import { GLTFExtensionMode, GLTFExtensionParser } from "./GLTFExtensionParser";
 import { IGalaceanMaterialRemap } from "./GLTFExtensionSchema";
 
-@registerGLTFExtension("OASIS_materials_remap", GLTFExtensionMode.CreateAndParse)
-class GalaceanMaterialsRemap extends GLTFExtensionParser {
+@registerGLTFExtension("GALACEAN_materials_remap", GLTFExtensionMode.CreateAndParse)
+class GALACEAN_materials_remap extends GLTFExtensionParser {
   /**
    * @override
    */
diff --git a/tests/package.json b/tests/package.json
index c6fba2376..4b2d78a59 100644
--- a/tests/package.json
+++ b/tests/package.json
@@ -1,7 +1,7 @@
 {
   "name": "@galacean/engine-tests",
   "private": true,
-  "version": "0.9.0-alpha.4",
+  "version": "1.0.0-alpha.6",
   "license": "MIT",
   "main": "dist/main.js",
   "module": "dist/module.js",