diff --git a/src/RenderDevice/Vulkan/VKMaterial.cpp b/src/RenderDevice/Vulkan/VKMaterial.cpp
index bd9082d2..61debcd9 100644
--- a/src/RenderDevice/Vulkan/VKMaterial.cpp
+++ b/src/RenderDevice/Vulkan/VKMaterial.cpp
@@ -14,9 +14,9 @@ Material *CreateMaterial(Device *dev,ShaderModuleMap *shader_maps)
     if(shader_count<2)
         return(nullptr);
 
-    const ShaderModule *vsm;
+    const ShaderModule *sm;
 
-    if(!shader_maps->Get(VK_SHADER_STAGE_VERTEX_BIT,vsm))
+    if(!shader_maps->Get(VK_SHADER_STAGE_VERTEX_BIT,sm))
         return(nullptr);
 
     DescriptorSetLayoutCreater *dsl_creater=new DescriptorSetLayoutCreater(dev);
@@ -29,16 +29,20 @@ Material *CreateMaterial(Device *dev,ShaderModuleMap *shader_maps)
     auto **itp=shader_maps->GetDataList();
     for(int i=0;i<shader_count;i++)
     {
-        vsm=(*itp)->right;
-        memcpy(p,vsm->GetCreateInfo(),sizeof(VkPipelineShaderStageCreateInfo));
+        sm=(*itp)->right;
+        memcpy(p,sm->GetCreateInfo(),sizeof(VkPipelineShaderStageCreateInfo));
 
-        dsl_creater->Bind(vsm->GetDescriptorList(),vsm->GetStage());
+        dsl_creater->Bind(sm->GetDescriptorList(),sm->GetStage());
 
         ++p;
         ++itp;
     }
 
-    dsl_creater->CreatePipelineLayout();
+    if(!dsl_creater->CreatePipelineLayout())
+    {
+        delete shader_maps;
+        return(nullptr);
+    }
 
     return(new Material(dev,shader_maps,shader_stage_list,dsl_creater));
 }
@@ -68,8 +72,11 @@ Material::~Material()
 {
     delete dsl_creater;
 
-    vertex_sm->Release(vab);
-    delete vab;
+    if(vab)
+    {
+        vertex_sm->Release(vab);
+        delete vab;
+    }
 
     delete shader_stage_list;
     delete shader_maps;
diff --git a/src/RenderDevice/Vulkan/VKShaderModule.cpp b/src/RenderDevice/Vulkan/VKShaderModule.cpp
index 6c51d3e2..c96191e3 100644
--- a/src/RenderDevice/Vulkan/VKShaderModule.cpp
+++ b/src/RenderDevice/Vulkan/VKShaderModule.cpp
@@ -69,7 +69,7 @@ VertexShaderModule::~VertexShaderModule()
 
 VertexAttributeBinding *VertexShaderModule::CreateVertexAttributeBinding()
 {
-    VertexAttributeBinding *vab=new VertexAttributeBinding(this);
+    VertexAttributeBinding *vab=new VertexAttributeBinding(attr_count,binding_list,attribute_list);
 
     vab_sets.Add(vab);
 
diff --git a/src/RenderDevice/Vulkan/VKVertexAttributeBinding.cpp b/src/RenderDevice/Vulkan/VKVertexAttributeBinding.cpp
index 451d2a3a..e76e4c6d 100644
--- a/src/RenderDevice/Vulkan/VKVertexAttributeBinding.cpp
+++ b/src/RenderDevice/Vulkan/VKVertexAttributeBinding.cpp
@@ -2,11 +2,9 @@
 #include<hgl/graph/vulkan/VKShaderModule.h>
 
 VK_NAMESPACE_BEGIN
-VertexAttributeBinding::VertexAttributeBinding(VertexShaderModule *s)
+VertexAttributeBinding::VertexAttributeBinding(const uint32_t count,const VkVertexInputBindingDescription *bind_list,const VkVertexInputAttributeDescription *attr_list)
 {
-    vsm=s;
-
-    attr_count=vsm->GetAttrCount();
+    attr_count=count;
 
     if(attr_count<=0)
     {
@@ -15,21 +13,14 @@ VertexAttributeBinding::VertexAttributeBinding(VertexShaderModule *s)
         return;
     }
 
-    binding_list=hgl_copy_new(attr_count,vsm->GetDescList());
-    attribute_list=hgl_copy_new(attr_count,vsm->GetAttrList());
+    binding_list=hgl_copy_new(attr_count,bind_list);
+    attribute_list=hgl_copy_new(attr_count,attr_list);
 }
 
 VertexAttributeBinding::~VertexAttributeBinding()
 {
     delete[] attribute_list;
     delete[] binding_list;
-
-    vsm->Release(this);
-}
-
-const uint VertexAttributeBinding::GetStageInputBinding(const AnsiString &name)
-{
-    return vsm->GetStageInputBinding(name);
 }
 
 bool VertexAttributeBinding::SetInstance(const uint index,bool instance)
@@ -70,12 +61,10 @@ bool VertexAttributeBinding::SetOffset(const uint index,const uint32_t offset)
 
 void VertexAttributeBinding::Write(VkPipelineVertexInputStateCreateInfo &vis_create_info) const
 {
-    const uint32_t count=vsm->GetAttrCount();
-
-    vis_create_info.vertexBindingDescriptionCount = count;
+    vis_create_info.vertexBindingDescriptionCount = attr_count;
     vis_create_info.pVertexBindingDescriptions = binding_list;
 
-    vis_create_info.vertexAttributeDescriptionCount = count;
+    vis_create_info.vertexAttributeDescriptionCount = attr_count;
     vis_create_info.pVertexAttributeDescriptions = attribute_list;
 }
 VK_NAMESPACE_END