diff --git a/source/export/exporter.js b/source/export/exporter.js
index 0c1c3b9..ddc3c44 100644
--- a/source/export/exporter.js
+++ b/source/export/exporter.js
@@ -11,13 +11,13 @@ OV.Exporter = class
 		];
 	}
 
-	Export (model, format, extension, callbacks)
+	Export (model, format, extension)
 	{
 		let files = [];
 		for (let i = 0; i < this.exporters.length; i++) {
 			let exporter = this.exporters[i];
 			if (exporter.CanExport (format, extension)) {
-				exporter.Export (model, format, files, callbacks);
+				exporter.Export (model, format, files);
 				break;
 			}
 		}
diff --git a/source/export/exporterbase.js b/source/export/exporterbase.js
index c906e78..b35c7ab 100644
--- a/source/export/exporterbase.js
+++ b/source/export/exporterbase.js
@@ -42,7 +42,7 @@ OV.ExporterBase = class
 {
     constructor ()
     {
-		this.callbacks = null;
+
     }
 
     CanExport (format, extension)
@@ -50,9 +50,8 @@ OV.ExporterBase = class
         return false;
     }
     
-	Export (model, format, files, callbacks)
+	Export (model, format, files)
 	{
-		this.callbacks = callbacks;
 		this.ExportContent (model, format, files);
 	}
 
diff --git a/source/export/exportergltf.js b/source/export/exportergltf.js
index 06294ab..6883117 100644
--- a/source/export/exportergltf.js
+++ b/source/export/exportergltf.js
@@ -95,7 +95,7 @@ OV.ExporterGltf = class extends OV.ExporterBase
                 let bufferViewIndex = mainJson.bufferViews.length;
                 textureIndex = mainJson.textures.length;
                 fileNameToIndex[fileName] = textureIndex;
-                let textureBuffer = obj.callbacks.getTextureBuffer (texture.name);
+                let textureBuffer = texture.buffer;
                 textureBuffers.push (textureBuffer);
                 mainJson.buffers.push ({
                     byteLength : textureBuffer.byteLength
diff --git a/test/tests/exporter_test.js b/test/tests/exporter_test.js
index 402aec8..88223b5 100644
--- a/test/tests/exporter_test.js
+++ b/test/tests/exporter_test.js
@@ -67,7 +67,7 @@ describe ('Exporter', function () {
         let model = CreateTestModel ();
         let exporter = new OV.Exporter ();
 
-        let result = exporter.Export (model, OV.FileFormat.Text, 'obj', null);
+        let result = exporter.Export (model, OV.FileFormat.Text, 'obj');
         assert.strictEqual (result.length, 5);
 
         let mtlFile = result[0];
@@ -137,7 +137,7 @@ f 4//4 8//4 6//4
         let model = CreateTestModel ();
         let exporter = new OV.Exporter ();
 
-        let result = exporter.Export (model, OV.FileFormat.Text, 'stl', null);
+        let result = exporter.Export (model, OV.FileFormat.Text, 'stl');
         assert.strictEqual (result.length, 1);
 
         let stlFile = result[0];
@@ -181,7 +181,7 @@ endsolid Model
         let model = CreateTestModel ();
         let exporter = new OV.Exporter ();
 
-        let result = exporter.Export (model, OV.FileFormat.Binary, 'stl', null);
+        let result = exporter.Export (model, OV.FileFormat.Binary, 'stl');
         assert.strictEqual (result.length, 1);
 
         let stlFile = result[0];
@@ -204,7 +204,7 @@ endsolid Model
     let model = CreateTestModel ();
     let exporter = new OV.Exporter ();
 
-    let result = exporter.Export (model, OV.FileFormat.Text, 'off', null);
+    let result = exporter.Export (model, OV.FileFormat.Text, 'off');
     assert.strictEqual (result.length, 1);
 
     let offFile = result[0];
@@ -232,7 +232,7 @@ endsolid Model
       let model = CreateTestModel ();
       let exporter = new OV.Exporter ();
 
-      let result = exporter.Export (model, OV.FileFormat.Text, 'ply', null);
+      let result = exporter.Export (model, OV.FileFormat.Text, 'ply');
       assert.strictEqual (result.length, 1);
 
       let plyFile = result[0];
@@ -267,7 +267,7 @@ end_header
         let model = CreateTestModel ();
         let exporter = new OV.Exporter ();
 
-        let result = exporter.Export (model, OV.FileFormat.Binary, 'ply', null);
+        let result = exporter.Export (model, OV.FileFormat.Binary, 'ply');
         assert.strictEqual (result.length, 1);
 
         let plyFile = result[0];
@@ -290,7 +290,7 @@ end_header
       let model = CreateTestModel ();
       let exporter = new OV.Exporter ();
 
-      let result = exporter.Export (model, OV.FileFormat.Text, 'gltf', null);
+      let result = exporter.Export (model, OV.FileFormat.Text, 'gltf');
       assert.strictEqual (result.length, 3);
 
       let gltfFile = result[0];
@@ -334,11 +334,7 @@ end_header
     let model = CreateTestModel ();
     let exporter = new OV.Exporter ();
 
-    let result = exporter.Export (model, OV.FileFormat.Binary, 'glb', {
-      getTextureBuffer : function (name) {
-        return new ArrayBuffer (4);
-      }
-    });
+    let result = exporter.Export (model, OV.FileFormat.Binary, 'glb');
     assert.strictEqual (result.length, 1);
 
     let glbFile = result[0];
diff --git a/website/o3dv/dialogs.js b/website/o3dv/dialogs.js
index b6fe85a..c95f1c9 100644
--- a/website/o3dv/dialogs.js
+++ b/website/o3dv/dialogs.js
@@ -252,7 +252,7 @@ OV.ShowExportDialog = function (model)
 		taskRunner.Run (1, {
 			runTask : function (index, ready) {
                 let exporter = new OV.Exporter ();
-                let files = exporter.Export (model, selectedFormat.format, selectedFormat.extension, null);
+                let files = exporter.Export (model, selectedFormat.format, selectedFormat.extension);
                 fileList.empty ();
                 for (let i = 0; i < files.length; i++) {
                     let file = files[i];