diff --git a/example/Vulkan/VulkanAppFramework.h b/example/Vulkan/VulkanAppFramework.h
index e96bd676..34062d59 100644
--- a/example/Vulkan/VulkanAppFramework.h
+++ b/example/Vulkan/VulkanAppFramework.h
@@ -223,14 +223,7 @@ public:
 
     int AcquireNextImage()
     {
-        if(sc_render_target->Wait())
-        {
-            int cur=sc_render_target->AcquireNextImage(present_complete_semaphore);
-
-            return cur;
-        }
-
-        return -1;
+        return sc_render_target->AcquireNextImage(present_complete_semaphore);
     }
 
     void SubmitDraw(int index)
@@ -239,6 +232,7 @@ public:
         
         sc_render_target->Submit(cb,present_complete_semaphore,render_complete_semaphore);
         sc_render_target->PresentBackbuffer(render_complete_semaphore);
+        sc_render_target->Wait();
     }
 
     virtual void Draw()
diff --git a/inc/hgl/graph/vulkan/VKDevice.h b/inc/hgl/graph/vulkan/VKDevice.h
index 3a527ff2..253338fd 100644
--- a/inc/hgl/graph/vulkan/VKDevice.h
+++ b/inc/hgl/graph/vulkan/VKDevice.h
@@ -16,9 +16,7 @@ class Device
 {
     DeviceAttribute *attr;
 
-    Fence *texture_fence;
-
-    VkSubmitInfo texture_submit_info;
+    SubmitQueue *textureSQ;
     CommandBuffer *texture_cmd_buf;
 
     Swapchain *swapchain;
diff --git a/inc/hgl/graph/vulkan/VKRenderTarget.h b/inc/hgl/graph/vulkan/VKRenderTarget.h
index 356390bd..ab6748bf 100644
--- a/inc/hgl/graph/vulkan/VKRenderTarget.h
+++ b/inc/hgl/graph/vulkan/VKRenderTarget.h
@@ -25,7 +25,8 @@ public:
     virtual ~SubmitQueue();
     
     bool Wait(const bool wait_wall=true,const uint64 time_out=HGL_NANO_SEC_PER_SEC);
-    bool Submit(VkCommandBuffer &cmd_buf,vulkan::Semaphore *wait_sem,vulkan::Semaphore *complete_sem);
+    bool Submit(const VkCommandBuffer &cmd_buf,vulkan::Semaphore *wait_sem,vulkan::Semaphore *complete_sem);
+    bool Submit(const VkCommandBuffer *cmd_buf,const uint32_t count,vulkan::Semaphore *wait_sem,vulkan::Semaphore *complete_sem);
 };//class SumbitQueue
 
 /**
diff --git a/src/RenderDevice/Vulkan/VKDevice.cpp b/src/RenderDevice/Vulkan/VKDevice.cpp
index 927bb8c7..88a462fe 100644
--- a/src/RenderDevice/Vulkan/VKDevice.cpp
+++ b/src/RenderDevice/Vulkan/VKDevice.cpp
@@ -17,11 +17,7 @@ Device::Device(DeviceAttribute *da)
 {
     attr=da;
 
-    texture_fence=this->CreateFence(false);
-
-    hgl_zero(texture_submit_info);
-    texture_submit_info.sType = VK_STRUCTURE_TYPE_SUBMIT_INFO;
-
+    textureSQ=nullptr;
     texture_cmd_buf=nullptr;
 
     swapchain=nullptr;
@@ -34,8 +30,8 @@ Device::~Device()
     SAFE_CLEAR(swapchainRT);
     SAFE_CLEAR(swapchain);
 
-    delete texture_cmd_buf;
-    delete texture_fence;
+    SAFE_CLEAR(textureSQ);
+    SAFE_CLEAR(texture_cmd_buf);
 
     delete attr;
 }
@@ -45,11 +41,13 @@ bool Device::Resize(const VkExtent2D &extent)
     SAFE_CLEAR(swapchainRT);
     SAFE_CLEAR(swapchain);
 
-    swapchain=CreateSwapchain(attr,extent);
-    
-    if(texture_cmd_buf)delete texture_cmd_buf;
+    SAFE_CLEAR(textureSQ);
+    SAFE_CLEAR(texture_cmd_buf);
 
-    texture_cmd_buf=CreateCommandBuffer(swapchain->GetExtent(),0);
+    swapchain=CreateSwapchain(attr,extent);
+
+    texture_cmd_buf=CreateCommandBuffer(extent,0);
+    textureSQ=new SubmitQueue(this,attr->graphics_queue,1);
 
     swapchainRT=new SwapchainRenderTarget(this,swapchain);
 
diff --git a/src/RenderDevice/Vulkan/VKDeviceTexture.cpp b/src/RenderDevice/Vulkan/VKDeviceTexture.cpp
index ca223140..4112e77a 100644
--- a/src/RenderDevice/Vulkan/VKDeviceTexture.cpp
+++ b/src/RenderDevice/Vulkan/VKDeviceTexture.cpp
@@ -156,14 +156,8 @@ bool Device::SubmitTexture(const VkCommandBuffer *cmd_bufs,const uint32_t count)
     if(!cmd_bufs||count<=0)
         return(false);
 
-    texture_submit_info.commandBufferCount = count;
-    texture_submit_info.pCommandBuffers = cmd_bufs;
-
-    VkFence fence=*texture_fence;
-    
-    if(vkQueueSubmit(attr->graphics_queue, 1, &texture_submit_info, fence))return(false);
-    if(vkWaitForFences(attr->device, 1, &fence, VK_TRUE, HGL_NANO_SEC_PER_SEC*0.1)!=VK_SUCCESS)return(false);    
-    vkResetFences(attr->device,1,&fence);
+    textureSQ->Submit(cmd_bufs,count,nullptr,nullptr);
+    textureSQ->Wait();
 
     return(true);
 }
diff --git a/src/RenderDevice/Vulkan/VKRenderTarget.cpp b/src/RenderDevice/Vulkan/VKRenderTarget.cpp
index fea3a548..1cafd3e3 100644
--- a/src/RenderDevice/Vulkan/VKRenderTarget.cpp
+++ b/src/RenderDevice/Vulkan/VKRenderTarget.cpp
@@ -15,17 +15,13 @@ SubmitQueue::SubmitQueue(Device *dev,VkQueue q,const uint32_t fence_count)
     queue=q;
 
     for(uint32_t i=0;i<fence_count;i++)
-         fence_list.Add(device->CreateFence(true));
+         fence_list.Add(device->CreateFence(false));
 
     current_fence=0;
 
     submit_info.sType                   = VK_STRUCTURE_TYPE_SUBMIT_INFO;
     submit_info.pNext                   = nullptr;
-    //submit_info.waitSemaphoreCount      = 1;
-    //submit_info.pWaitSemaphores         = *present_complete_semaphore;
     submit_info.pWaitDstStageMask       = &pipe_stage_flags;
-    //submit_info.signalSemaphoreCount    = 1;
-    //submit_info.pSignalSemaphores       = *render_complete_semaphore;
 }
 
 SubmitQueue::~SubmitQueue()
@@ -42,32 +38,59 @@ bool SubmitQueue::Wait(const bool wait_all,uint64_t time_out)
     result=vkWaitForFences(device->GetDevice(),1,&fence,wait_all,time_out);
     result=vkResetFences(device->GetDevice(),1,&fence);
 
+    if(++current_fence==fence_list.GetCount())
+        current_fence=0;
+
     return(true);
 }
     
-bool SubmitQueue::Submit(VkCommandBuffer &cmd_buf,vulkan::Semaphore *wait_sem,vulkan::Semaphore *complete_sem)
+bool SubmitQueue::Submit(const VkCommandBuffer *cmd_buf,const uint32_t cb_count,vulkan::Semaphore *wait_sem,vulkan::Semaphore *complete_sem)
 {
-    VkSemaphore ws=*wait_sem;
-    VkSemaphore cs=*complete_sem;
+    VkSemaphore ws;
+    VkSemaphore cs;
 
-    submit_info.waitSemaphoreCount  =1;
-    submit_info.pWaitSemaphores     =&ws;
-    submit_info.commandBufferCount  =1;
-    submit_info.pCommandBuffers     =&cmd_buf;
-    submit_info.signalSemaphoreCount=1;
-    submit_info.pSignalSemaphores   =&cs;
+    if(wait_sem)
+    {
+        ws=*wait_sem;
+
+        submit_info.waitSemaphoreCount  =1;
+        submit_info.pWaitSemaphores     =&ws;
+    }
+    else
+    {
+        submit_info.waitSemaphoreCount  =0;
+        submit_info.pWaitSemaphores     =nullptr;
+    }
+
+    if(complete_sem)
+    {
+        cs=*complete_sem;
+
+        submit_info.signalSemaphoreCount=1;
+        submit_info.pSignalSemaphores   =&cs;
+    }
+    else
+    {
+        submit_info.signalSemaphoreCount=0;
+        submit_info.pSignalSemaphores   =nullptr;
+    }
+
+    submit_info.commandBufferCount  =cb_count;
+    submit_info.pCommandBuffers     =cmd_buf;
     
     VkFence fence=*fence_list[current_fence];
 
     VkResult result=vkQueueSubmit(queue,1,&submit_info,fence);
 
-    if(++current_fence==fence_list.GetCount())
-        current_fence=0;
-
     //不在这里立即等待fence完成，是因为有可能queue submit需要久一点工作时间，我们这个时间可以去干别的。等在AcquireNextImage时再去等待fence，而且是另一帧的fence。这样有利于异步处理
 
     return(result==VK_SUCCESS);
 }
+    
+bool SubmitQueue::Submit(const VkCommandBuffer &cmd_buf,vulkan::Semaphore *wait_sem,vulkan::Semaphore *complete_sem)
+{
+    return Submit(&cmd_buf,1,wait_sem,complete_sem);
+}
 
 RenderTarget::RenderTarget(Device *dev,Framebuffer *_fb,const uint32_t fence_count):SubmitQueue(dev,dev->GetGraphicsQueue(),fence_count)
 {