diff --git a/example/Vulkan/InlineGeometryScene.cpp b/example/Vulkan/InlineGeometryScene.cpp
index 154bddfd..4c3596ab 100644
--- a/example/Vulkan/InlineGeometryScene.cpp
+++ b/example/Vulkan/InlineGeometryScene.cpp
@@ -71,12 +71,12 @@ private:
             pgci.color.Set(0.75,0,0,1);
             pgci.side_color.Set(1,0,0,1);
 
-            ro_plane_grid=CreatePlaneGrid(db,material,&pgci);
+            ro_plane_grid=CreateRenderablePlaneGrid(db,material,&pgci);
         }
         
         {
             struct CubeCreateInfo cci;            
-            ro_cube=CreateCube(db,material,&cci);
+            ro_cube=CreateRenderableCube(db,material,&cci);
         }
         
         {        
@@ -87,7 +87,7 @@ private:
             DomeCreateInfo dci;
 
             dci.radius=100;
-            dci.numberSlices=16;
+            dci.numberSlices=32;
 
             ro_dome=CreateRenderableDome(db,material,&dci);
         }
@@ -170,8 +170,8 @@ private:
         render_root.Add(db->CreateRenderableInstance(pipeline_line,descriptor_sets,ro_plane_grid));
         render_root.Add(db->CreateRenderableInstance(pipeline_twoside,descriptor_sets,ro_dome));
         render_root.Add(db->CreateRenderableInstance(pipeline_twoside,descriptor_sets,ro_torus));
-        render_root.Add(db->CreateRenderableInstance(pipeline_solid,descriptor_sets,ro_cube     ),translate(-10,  0,10)*scale(10,10,10));
-        render_root.Add(db->CreateRenderableInstance(pipeline_solid,descriptor_sets,ro_sphere   ),translate( 10,  0,10)*scale(10,10,10));
+        render_root.Add(db->CreateRenderableInstance(pipeline_solid,descriptor_sets,ro_cube     ),translate(-10,  0, 5)*scale(10,10,10));
+        render_root.Add(db->CreateRenderableInstance(pipeline_solid,descriptor_sets,ro_sphere   ),translate( 10,  0, 5)*scale(10,10,10));
         render_root.Add(db->CreateRenderableInstance(pipeline_solid,descriptor_sets,ro_cylinder ),translate(  0, 16, 0));
         render_root.Add(db->CreateRenderableInstance(pipeline_solid,descriptor_sets,ro_cone     ),translate(  0,-16, 0));
 
diff --git a/inc/hgl/graph/InlineGeometry.h b/inc/hgl/graph/InlineGeometry.h
index 5d540196..8e2fbf0e 100644
--- a/inc/hgl/graph/InlineGeometry.h
+++ b/inc/hgl/graph/InlineGeometry.h
@@ -58,7 +58,7 @@ namespace hgl
             Color4f side_color;     //边界线条颜色
         };//struct PlaneGridCreateInfo
 
-        vulkan::Renderable *CreatePlaneGrid(SceneDB *db,vulkan::Material *mtl,const PlaneGridCreateInfo *pgci);
+        vulkan::Renderable *CreateRenderablePlaneGrid(SceneDB *db,vulkan::Material *mtl,const PlaneGridCreateInfo *pgci);
 
         struct PlaneCreateInfo
         {
@@ -75,7 +75,7 @@ namespace hgl
         /**
          * 创建一个中心坐标为0,0,0，长宽高为1的立方体
          */
-        vulkan::Renderable *CreateCube(SceneDB *db,vulkan::Material *mtl,const CubeCreateInfo *cci);
+        vulkan::Renderable *CreateRenderableCube(SceneDB *db,vulkan::Material *mtl,const CubeCreateInfo *cci);
         
         /**
          * 创建一个球心坐标为0,0,0，半径为1的球体
diff --git a/src/RenderDevice/Vulkan/VKDevice.cpp b/src/RenderDevice/Vulkan/VKDevice.cpp
index dda6fd32..701db5e7 100644
--- a/src/RenderDevice/Vulkan/VKDevice.cpp
+++ b/src/RenderDevice/Vulkan/VKDevice.cpp
@@ -257,14 +257,11 @@ bool Device::SubmitDraw(const VkCommandBuffer *cmd_bufs,const uint32_t count)
 
     submit_info.commandBufferCount = count;
     submit_info.pCommandBuffers = cmd_bufs;
-    
+
     VkFence fence=*fence_list[current_fence];
 
     VkResult result=vkQueueSubmit(attr->graphics_queue,1,&submit_info,fence);
 
-    if(++current_fence==swap_chain_count)
-        current_fence=0;
-    
     return(result==VK_SUCCESS);
 }
 
@@ -275,6 +272,9 @@ bool Device::Wait(bool wait_all,uint64_t time_out)
     vkWaitForFences(attr->device,1,&fence,wait_all,time_out);
     vkResetFences(attr->device,1,&fence);
 
+    if(++current_fence==swap_chain_count)
+        current_fence=0;
+
     return(true);
 }
 
diff --git a/src/RenderDevice/Vulkan/VKDeviceCreater.cpp b/src/RenderDevice/Vulkan/VKDeviceCreater.cpp
index 91371368..f957b777 100644
--- a/src/RenderDevice/Vulkan/VKDeviceCreater.cpp
+++ b/src/RenderDevice/Vulkan/VKDeviceCreater.cpp
@@ -102,7 +102,7 @@ namespace
         swapchain_ci.sType=VK_STRUCTURE_TYPE_SWAPCHAIN_CREATE_INFO_KHR;
         swapchain_ci.pNext=nullptr;
         swapchain_ci.surface=rsa->surface;
-        swapchain_ci.minImageCount=rsa->surface_caps.minImageCount;
+        swapchain_ci.minImageCount=3;//rsa->surface_caps.minImageCount;
         swapchain_ci.imageFormat=rsa->format;
         swapchain_ci.imageExtent=rsa->swapchain_extent;
         swapchain_ci.preTransform=rsa->preTransform;