diff --git a/example/Vulkan/AssimpLoaderMesh.cpp b/example/Vulkan/AssimpLoaderMesh.cpp
index aea26026..70415ce1 100644
--- a/example/Vulkan/AssimpLoaderMesh.cpp
+++ b/example/Vulkan/AssimpLoaderMesh.cpp
@@ -127,11 +127,6 @@ namespace
 
     Matrix4f MatrixRotate(const aiMatrix4x4 &s)
     {
-        //return Matrix4f(s.a1,s.b1,s.c1,s.d1,
-        //                s.a2,s.b2,s.c2,s.d2,
-        //                s.a3,s.b3,s.c3,s.d3,
-        //                s.a4,s.b4,s.c4,s.d4);
-
         return Matrix4f(s.a1,s.a2,s.a3,s.a4,
                         s.b1,s.b2,s.b3,s.b4,
                         s.c1,s.c2,s.c3,s.c4,
diff --git a/example/Vulkan/LoadModel.cpp b/example/Vulkan/LoadModel.cpp
index 5a506e19..92c63976 100644
--- a/example/Vulkan/LoadModel.cpp
+++ b/example/Vulkan/LoadModel.cpp
@@ -14,8 +14,8 @@
 using namespace hgl;
 using namespace hgl::graph;
 
-constexpr uint32_t SCREEN_WIDTH=256;
-constexpr uint32_t SCREEN_HEIGHT=256;
+constexpr uint32_t SCREEN_WIDTH=1280;
+constexpr uint32_t SCREEN_HEIGHT=960;
 
 vulkan::Renderable *CreateMeshRenderable(SceneDB *db,vulkan::Material *mtl,const MeshData *mesh)
 {
@@ -117,14 +117,15 @@ private:
     void InitCamera()
     {
         math::vec center_point=model_data->bounding_box.CenterPoint();
-        math::vec min_point=model_data->bounding_box.minPoint;
         math::vec max_point=model_data->bounding_box.maxPoint;
 
+        max_point.x*=3.0f;
+        max_point.y=center_point.y;
+        max_point.z=center_point.z;
+
         camera.type=CameraType::Perspective;
         camera.center=center_point.xyz();
         camera.eye=max_point.xyz();
-        //camera.center.Set(0,0,0);
-        //camera.eye.Set(10,10,5);
         camera.up_vector.Set(0,0,1);
         camera.forward_vector.Set(0,1,0);
         camera.znear=4;