diff --git a/CMakeLists.txt b/CMakeLists.txt
index e00a9f33..c26e642f 100644
--- a/CMakeLists.txt
+++ b/CMakeLists.txt
@@ -20,8 +20,8 @@ if(CMAKE_SYSTEM_NAME STREQUAL "Windows")
 
     include_directories(${Vulkan_INCLUDE_DIRS})
 
-    include_directories(${CMAKE_CURRENT_SOURCE_DIR}/3rdpty/jsoncpp/include)
-    add_subdirectory(3rdpty/jsoncpp)
+#     include_directories(${CMAKE_CURRENT_SOURCE_DIR}/3rdpty/jsoncpp/include)
+#     add_subdirectory(3rdpty/jsoncpp)
 elseif(CMAKE_SYSTEM_NAME STREQUAL "Android")
     add_definitions(-DVK_USE_PLATFORM_ANDROID_KHR)
 elseif(UNIX)
@@ -56,7 +56,7 @@ SET(ULRE    ULRE.Base
             ULRE.Platform
             MathGeoLib
             spirv-cross-core
-            jsoncpp_lib
+#            jsoncpp_lib
             ${RENDER_LIBRARY}
             ${Vulkan_LIBRARIES})
 
diff --git a/example/Vulkan/main.cpp b/example/Vulkan/main.cpp
index 24cf43d8..40f3b21a 100644
--- a/example/Vulkan/main.cpp
+++ b/example/Vulkan/main.cpp
@@ -106,17 +106,17 @@ private:
     {
         constexpr os_char PIPELINE_FILENAME[]=OS_TEXT("2DSolid.pipeline");
 
-        //{
-        //    vulkan::PipelineCreater *pipeline_creater=new vulkan::PipelineCreater(device,material,device->GetRenderPass(),device->GetExtent());
-        //    pipeline_creater->SetDepthTest(false);
-        //    pipeline_creater->SetDepthWrite(false);
-        //    pipeline_creater->CloseCullFace();
-        //    pipeline_creater->Set(PRIM_TRIANGLES);
+        {
+            vulkan::PipelineCreater *pipeline_creater=new vulkan::PipelineCreater(device,material,device->GetRenderPass(),device->GetExtent());
+            pipeline_creater->SetDepthTest(false);
+            pipeline_creater->SetDepthWrite(false);
+            pipeline_creater->CloseCullFace();
+            pipeline_creater->Set(PRIM_TRIANGLES);
 
-        //    SaveToFile(PIPELINE_FILENAME,pipeline_creater);
+            SaveToFile(PIPELINE_FILENAME,pipeline_creater);
 
-        //    delete pipeline_creater;
-        //}
+            delete pipeline_creater;
+        }
 
         {
             void *data;
diff --git a/inc/hgl/io/MemoryInputStream.h b/inc/hgl/io/MemoryInputStream.h
index 78edbbe9..589f7dcf 100644
--- a/inc/hgl/io/MemoryInputStream.h
+++ b/inc/hgl/io/MemoryInputStream.h
@@ -1,7 +1,6 @@
 #ifndef HGL_IO_MEMORY_INPUT_STREAM_INCLUDE
 #define HGL_IO_MEMORY_INPUT_STREAM_INCLUDE
 
-#include<hgl/type/MemBlock.h>
 #include<hgl/io/InputStream.h>
 namespace hgl
 {
diff --git a/inc/hgl/io/MemoryOutputStream.h b/inc/hgl/io/MemoryOutputStream.h
index 6378d28f..cdd528d7 100644
--- a/inc/hgl/io/MemoryOutputStream.h
+++ b/inc/hgl/io/MemoryOutputStream.h
@@ -1,7 +1,6 @@
 #ifndef HGL_IO_MEMORY_OUTPUT_STREAM_INCLUDE
 #define HGL_IO_MEMORY_OUTPUT_STREAM_INCLUDE
 
-#include<hgl/type/MemBlock.h>
 #include<hgl/io/OutputStream.h>
 namespace hgl
 {
diff --git a/src/RenderDevice/Vulkan/POD/VKPipelineCreateInfo.POD.cpp b/src/RenderDevice/Vulkan/POD/VKPipelineCreateInfo.POD.cpp
index df6d637d..3a84770b 100644
--- a/src/RenderDevice/Vulkan/POD/VKPipelineCreateInfo.POD.cpp
+++ b/src/RenderDevice/Vulkan/POD/VKPipelineCreateInfo.POD.cpp
@@ -9,35 +9,37 @@
 using namespace hgl;
 
 VK_NAMESPACE_BEGIN
+
+#define WRITE_AND_CHECK_SIZE(ptr,type)  if(dos->Write(ptr,sizeof(type))!=sizeof(type))return(false);
+
 bool PipelineCreater::SaveToStream(io::DataOutputStream *dos)
 {
     if(!dos)return(false);
 
-    dos->WriteUint16(1);     //file ver
+    if(!dos->WriteUint16(1))return(false);     //file ver
 
-    dos->Write(&pipelineInfo,sizeof(VkGraphicsPipelineCreateInfo));
+    WRITE_AND_CHECK_SIZE(&pipelineInfo,VkGraphicsPipelineCreateInfo);
+    WRITE_AND_CHECK_SIZE(pipelineInfo.pInputAssemblyState,  VkPipelineInputAssemblyStateCreateInfo  );
+    WRITE_AND_CHECK_SIZE(pipelineInfo.pTessellationState,   VkPipelineTessellationStateCreateInfo   );
+    WRITE_AND_CHECK_SIZE(pipelineInfo.pRasterizationState,  VkPipelineRasterizationStateCreateInfo  );
 
-    dos->Write(pipelineInfo.pInputAssemblyState,    sizeof(VkPipelineInputAssemblyStateCreateInfo));
-    dos->Write(pipelineInfo.pTessellationState,     sizeof(VkPipelineTessellationStateCreateInfo));
-    dos->Write(pipelineInfo.pRasterizationState,    sizeof(VkPipelineRasterizationStateCreateInfo));
-
-    dos->Write(pipelineInfo.pMultisampleState,      sizeof(VkPipelineMultisampleStateCreateInfo));
+    WRITE_AND_CHECK_SIZE(pipelineInfo.pMultisampleState,    VkPipelineMultisampleStateCreateInfo    );
     if(pipelineInfo.pMultisampleState->pSampleMask)
     {
         const uint count=(pipelineInfo.pMultisampleState->rasterizationSamples+31)/32;
-        dos->WriteUint8(count);
-        dos->WriteUint32(pipelineInfo.pMultisampleState->pSampleMask,count);
+        if(!dos->WriteUint8(count))return(false);
+        if(dos->WriteUint32(pipelineInfo.pMultisampleState->pSampleMask,count)!=count)return(false);
     }
     else
     {
-        dos->WriteUint8(0);
+        if(!dos->WriteUint8(0))return(false);
     }
 
-    dos->Write(pipelineInfo.pDepthStencilState,    sizeof(VkPipelineDepthStencilStateCreateInfo));
+    WRITE_AND_CHECK_SIZE(pipelineInfo.pDepthStencilState,   VkPipelineDepthStencilStateCreateInfo);
 
-    dos->Write(pipelineInfo.pColorBlendState,sizeof(VkPipelineColorBlendStateCreateInfo));
+    WRITE_AND_CHECK_SIZE(pipelineInfo.pColorBlendState,     VkPipelineColorBlendStateCreateInfo);
     for(uint32_t i=0;i<pipelineInfo.pColorBlendState->attachmentCount;i++)
-        dos->Write(pipelineInfo.pColorBlendState->pAttachments+i,sizeof(VkPipelineColorBlendAttachmentState));
+        WRITE_AND_CHECK_SIZE(pipelineInfo.pColorBlendState->pAttachments+i,VkPipelineColorBlendAttachmentState);
 
     return(true);
 }
diff --git a/src/RenderDevice/Vulkan/VKPipeline.cpp b/src/RenderDevice/Vulkan/VKPipeline.cpp
index 1c2be942..689005ff 100644
--- a/src/RenderDevice/Vulkan/VKPipeline.cpp
+++ b/src/RenderDevice/Vulkan/VKPipeline.cpp
@@ -77,7 +77,12 @@ PipelineCreater::PipelineCreater(Device *dev,const Material *material,RenderPass
     pipelineInfo.sType = VK_STRUCTURE_TYPE_GRAPHICS_PIPELINE_CREATE_INFO;
     InitVertexInputState(material);
 
-    pipelineInfo.pTessellationState=nullptr;
+    tessellation.sType=VK_STRUCTURE_TYPE_PIPELINE_TESSELLATION_STATE_CREATE_INFO;
+    tessellation.pNext=nullptr;
+    tessellation.flags=0;
+    tessellation.patchControlPoints=0;
+
+    pipelineInfo.pTessellationState=&tessellation;
 
     InitViewportState();