diff --git a/example/Vulkan/Geometry3D.cpp b/example/Vulkan/Geometry3D.cpp
index 5ecbb84b..c9d88cc4 100644
--- a/example/Vulkan/Geometry3D.cpp
+++ b/example/Vulkan/Geometry3D.cpp
@@ -13,7 +13,7 @@ using namespace hgl::graph;
 constexpr uint32_t SCREEN_WIDTH=128;
 constexpr uint32_t SCREEN_HEIGHT=128;
 
-class TestApp:public WalkerCameraAppFramework
+class TestApp:public CameraAppFramework
 {
 private:
 
@@ -125,7 +125,7 @@ public:
 
     bool Init()
     {
-        if(!WalkerCameraAppFramework::Init(SCREEN_WIDTH,SCREEN_HEIGHT))
+        if(!CameraAppFramework::Init(SCREEN_WIDTH,SCREEN_HEIGHT))
             return(false);
 
         if(!InitMaterial())
@@ -149,7 +149,7 @@ public:
     {
         BuildCommandBuffer(&render_list);
     }
-};//class TestApp:public WalkerCameraAppFramework
+};//class TestApp:public CameraAppFramework
 
 int main(int,char **)
 {
diff --git a/example/Vulkan/LoadModel.cpp b/example/Vulkan/LoadModel.cpp
index e3cea4e0..23af8c5c 100644
--- a/example/Vulkan/LoadModel.cpp
+++ b/example/Vulkan/LoadModel.cpp
@@ -76,7 +76,7 @@ vulkan::Renderable *CreateMeshRenderable(SceneDB *db,vulkan::Material *mtl,const
     return(render_obj);
 }
 
-class TestApp:public WalkerCameraAppFramework
+class TestApp:public CameraAppFramework
 {
 private:
 
@@ -233,7 +233,7 @@ public:
 
         model_data=md;
 
-        if(!WalkerCameraAppFramework::Init(SCREEN_WIDTH,SCREEN_HEIGHT))
+        if(!CameraAppFramework::Init(SCREEN_WIDTH,SCREEN_HEIGHT))
             return(false);
 
         if(!InitMaterial())
@@ -259,7 +259,7 @@ public:
     {
         BuildCommandBuffer(&render_list);
     }
-};//class TestApp:public WalkerCameraAppFramework
+};//class TestApp:public CameraAppFramework
 
 #ifdef _WIN32
 int wmain(int argc,wchar_t **argv)
diff --git a/example/Vulkan/SceneTree.cpp b/example/Vulkan/SceneTree.cpp
index cfea1590..212060f8 100644
--- a/example/Vulkan/SceneTree.cpp
+++ b/example/Vulkan/SceneTree.cpp
@@ -15,7 +15,7 @@ using namespace hgl::graph;
 constexpr uint32_t SCREEN_WIDTH=128;
 constexpr uint32_t SCREEN_HEIGHT=128;
 
-class TestApp:public WalkerCameraAppFramework
+class TestApp:public CameraAppFramework
 {
 private:
 
@@ -131,7 +131,7 @@ public:
 
     bool Init()
     {
-        if(!WalkerCameraAppFramework::Init(SCREEN_WIDTH,SCREEN_HEIGHT))
+        if(!CameraAppFramework::Init(SCREEN_WIDTH,SCREEN_HEIGHT))
             return(false);
 
         if(!InitMaterial())
@@ -153,7 +153,7 @@ public:
 
     void Draw() override
     {
-        WalkerCameraAppFramework::Draw();
+        CameraAppFramework::Draw();
 
         Matrix4f rot=rotate(GetDoubleTime()-start_time,camera.up_vector);
 
@@ -168,7 +168,7 @@ public:
     {
         BuildCommandBuffer(&render_list);
     }
-};//class TestApp:public VulkanApplicationFramework
+};//class TestApp:public CameraAppFramework
 
 int main(int,char **)
 {
diff --git a/example/Vulkan/VulkanAppFramework.h b/example/Vulkan/VulkanAppFramework.h
index 1bad8787..8ddf5f86 100644
--- a/example/Vulkan/VulkanAppFramework.h
+++ b/example/Vulkan/VulkanAppFramework.h
@@ -225,7 +225,7 @@ public:
     }
 };//class VulkanApplicationFramework
 
-class WalkerCameraAppFramework:public VulkanApplicationFramework
+class CameraAppFramework:public VulkanApplicationFramework
 {
 private:
 
@@ -240,7 +240,7 @@ protected:
 
 public:
 
-    virtual ~WalkerCameraAppFramework()=default;
+    virtual ~CameraAppFramework()=default;
 
     virtual bool Init(int w,int h)
     {
@@ -290,6 +290,11 @@ public:
         if(key_status[kbD])camera.Right     (move_speed);else
         if(key_status[kbR])camera.Up        (move_speed);else
         if(key_status[kbF])camera.Down      (move_speed);else
+
+        if(key_status[kbLeft    ])camera.WrapHorzRotate(move_speed);else
+        if(key_status[kbRight   ])camera.WrapHorzRotate(-move_speed);else
+        if(key_status[kbUp      ])camera.WrapVertRotate(move_speed);else
+        if(key_status[kbDown    ])camera.WrapVertRotate(-move_speed);else
             return;
     }
 
@@ -322,4 +327,4 @@ public:
     {
         camera.Distance(1+(v/1000.0f));
     }
-};//class WalkerCameraAppFramework
+};//class CameraAppFramework
diff --git a/src/Tools/ModelConvert/AssimpLoader.cpp b/src/Tools/ModelConvert/AssimpLoader.cpp
index b6b0a29a..c14840b2 100644
--- a/src/Tools/ModelConvert/AssimpLoader.cpp
+++ b/src/Tools/ModelConvert/AssimpLoader.cpp
@@ -612,7 +612,7 @@ void AssimpLoader::LoadMesh()
         {
             int tc=0;
             int comp_total=0;
-            int *uv_use=mtl->uv_use.GetData();
+            uint *uv_use=mtl->uv_use.GetData();
 
             //这里要重新审视数据来源，并不是每一个纹理通道都有数据，并且和材质对应。
             //、、材质中的uv index具体对应啥 还不是很清楚