diff --git a/example/app_gbuffer.html b/example/app_gbuffer.html
index 50dc04421..eced10703 100644
--- a/example/app_gbuffer.html
+++ b/example/app_gbuffer.html
@@ -41,7 +41,11 @@
                 this._camera = app.createCamera([0, 150, 200], [0, 100, 0]);
 
                 // Load boombox model.
-                app.loadModel('./assets/models/SambaDancing/SambaDancing.gltf');
+                app.loadModel('./assets/models/SambaDancing/SambaDancing.gltf').then(function (result) {
+                    result.materials.forEach(function (mat) {
+                        mat.set('metalness', 1);
+                    });
+                });
 
                 // Create light
                 app.createDirectionalLight([-1, -1, -1]);
diff --git a/example/app_model.html b/example/app_model.html
index 85b75c4da..d2d577721 100644
--- a/example/app_model.html
+++ b/example/app_model.html
@@ -31,7 +31,7 @@
                 });
 
                 // Load boombox model. return a load promise to make sure the look will be start after model loaded.
-                return app.loadModel('./assets/models/BoomBox/BoomBox.gltf', {
+                app.loadModel('./assets/models/BoomBox/BoomBox.gltf', {
                     waitTextureLoaded: true
                 }).then(function (result) {
                     result.rootNode.scale.set(100, 100, 100);
diff --git a/example/deferred_skinning.html b/example/deferred_skinning.html
index 02a27a370..daa2626eb 100644
--- a/example/deferred_skinning.html
+++ b/example/deferred_skinning.html
@@ -120,17 +120,17 @@
             timeline.start();
             timeline.addClip(clip);
 
-            var skeletonDebugScene = createSkeletonDebugScene(skeleton, clay);
-            skeletonDebugScene.position.x = -10;
+            // var skeletonDebugScene = createSkeletonDebugScene(skeleton, clay);
+            // skeletonDebugScene.position.x = -10;
             timeline.on('frame', function() {
                 control.update(50);
                 skeleton.update();
                 deferredRenderer.render(renderer, scene, camera);
 
-                renderer.saveClear();
-                renderer.clearBit = renderer.gl.DEPTH_BUFFER_BIT;
-                renderer.render(skeletonDebugScene, camera);
-                renderer.restoreClear();
+                // renderer.saveClear();
+                // renderer.clearBit = renderer.gl.DEPTH_BUFFER_BIT;
+                // renderer.render(skeletonDebugScene, camera);
+                // renderer.restoreClear();
             });
         });
     </script>
diff --git a/package.json b/package.json
index e13bbc830..f1830166a 100644
--- a/package.json
+++ b/package.json
@@ -1,6 +1,6 @@
 {
   "name": "claygl",
-  "version": "1.1.2",
+  "version": "1.1.3",
   "description": "WebGL graphic library",
   "keywords": [
     "graphic",
diff --git a/src/Renderer.js b/src/Renderer.js
index 29996f570..028ef9646 100644
--- a/src/Renderer.js
+++ b/src/Renderer.js
@@ -62,7 +62,7 @@ function PlaceHolderTexture(renderer) {
         }
         gl.bindTexture(gl.TEXTURE_2D, webglTexture);
         if (firstBind) {
-            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.FLOAT, blankCanvas);
+            gl.texImage2D(gl.TEXTURE_2D, 0, gl.RGBA, gl.RGBA, gl.UNSIGNED_BYTE, blankCanvas);
         }
     };
     this.unbind = function (renderer) {
@@ -631,6 +631,7 @@ var Renderer = Base.extend(function () {
         var transparent;
         var drawID;
         var currentVAO;
+        var materialTakesTextureSlot;
 
         var vaoExt = this.getGLExtension('OES_vertex_array_object');
 
@@ -737,7 +738,7 @@ var Renderer = Base.extend(function () {
                     }
                 }
 
-                this._bindMaterial(
+                materialTakesTextureSlot = this._bindMaterial(
                     renderable, material, program,
                     prevRenderable || null, prevMaterial || null, prevProgram || null,
                     passConfig.getUniform
@@ -773,7 +774,7 @@ var Renderer = Base.extend(function () {
                 culling ? _gl.enable(_gl.CULL_FACE) : _gl.disable(_gl.CULL_FACE);
             }
             // TODO Not update skeleton in each renderable.
-            this._updateSkeleton(renderable, program);
+            this._updateSkeleton(renderable, program, materialTakesTextureSlot);
             if (drawIDChanged) {
                 currentVAO = this._bindVAO(vaoExt, shader, geometry, program);
             }
@@ -799,7 +800,7 @@ var Renderer = Base.extend(function () {
         return this._glinfo.getMaxJointNumber();
     },
 
-    _updateSkeleton: function (object, program) {
+    _updateSkeleton: function (object, program, slot) {
         var _gl = this.gl;
         var skeleton = object.skeleton;
         // Set pose matrices of skinned mesh
@@ -807,7 +808,6 @@ var Renderer = Base.extend(function () {
             skeleton.update();
             if (object.joints.length > this._glinfo.getMaxJointNumber()) {
                 var skinMatricesTexture = skeleton.getSubSkinMatricesTexture(object.__uid__, object.joints);
-                var slot = program.currentTextureSlot();
                 program.useTextureSlot(this, skinMatricesTexture, slot);
                 program.setUniform(_gl, '1i', 'skinMatricesTexture', slot);
                 program.setUniform(_gl, '1f', 'skinMatricesTextureSize', skinMatricesTexture.width);
@@ -970,8 +970,10 @@ var Renderer = Base.extend(function () {
                 program.setUniform(_gl, uniform.type, symbol, uniformValue);
             }
         }
+        var newSlot = program.currentTextureSlot();
         // Texture slot maybe used out of material.
         program.resetTextureSlot(currentTextureSlot);
+        return newSlot;
     },
 
     _bindVAO: function (vaoExt, shader, geometry, program) {
diff --git a/src/version.js b/src/version.js
index 1fccde1b5..a6c3cda8d 100644
--- a/src/version.js
+++ b/src/version.js
@@ -1,4 +1,4 @@
 /**
  * @name clay.version
  */
-export default '1.1.2';
+export default '1.1.3';