diff --git a/CMSceneGraph b/CMSceneGraph
index 28e59c27..32472ad3 160000
--- a/CMSceneGraph
+++ b/CMSceneGraph
@@ -1 +1 @@
-Subproject commit 28e59c2777ed5e0535ec0ba6b77577aa3a9b148f
+Subproject commit 32472ad33cf7a8f36a9aadb90ef84b406c585f1c
diff --git a/example/Vulkan/texture_rect.cpp b/example/Vulkan/texture_rect.cpp
index 98def86c..c8f3d2aa 100644
--- a/example/Vulkan/texture_rect.cpp
+++ b/example/Vulkan/texture_rect.cpp
@@ -39,6 +39,7 @@ private:
 
     Texture2D *         texture             =nullptr;
     Sampler *           sampler             =nullptr;
+    Material *          material            =nullptr;
     MaterialInstance *  material_instance   =nullptr;
     Renderable *        render_obj          =nullptr;
     Pipeline *          pipeline            =nullptr;
@@ -54,13 +55,13 @@ private:
 
         AutoDelete<mtl::MaterialCreateInfo> mci=mtl::CreateRectTexture2D(&cfg);
 
-        material_instance=db->CreateMaterialInstance(mci);
+        material=db->CreateMaterial(mci);
 
-        if(!material_instance)
+        if(!material)
             return(false);
 
 //        pipeline=db->CreatePipeline(material_instance,sc_render_target,OS_TEXT("res/pipeline/solid2d"));
-        pipeline=CreatePipeline(material_instance,InlinePipeline::Solid2D,Prim::SolidRectangles);     //等同上一行，为Framework重载，默认使用swapchain的render target
+        pipeline=CreatePipeline(material,InlinePipeline::Solid2D,Prim::SolidRectangles);     //等同上一行，为Framework重载，默认使用swapchain的render target
 
         if(!pipeline)
             return(false);
@@ -70,12 +71,14 @@ private:
 
         sampler=db->CreateSampler();
 
-        if(!material_instance->BindImageSampler(DescriptorSetType::PerMaterial,     ///<描述符合集
-                                                mtl::SamplerName::Color,            ///<采样器名称
-                                                texture,                            ///<纹理
-                                                sampler))                           ///<采样器
+        if(!material->BindImageSampler( DescriptorSetType::PerMaterial,     ///<描述符合集
+                                        mtl::SamplerName::Color,            ///<采样器名称
+                                        texture,                            ///<纹理
+                                        sampler))                           ///<采样器
             return(false);
 
+        material_instance=db->CreateMaterialInstance(material);
+
         return(true);
     }
 
diff --git a/inc/hgl/graph/VKMaterialParameters.h b/inc/hgl/graph/VKMaterialParameters.h
index 2de75d44..f943b28e 100644
--- a/inc/hgl/graph/VKMaterialParameters.h
+++ b/inc/hgl/graph/VKMaterialParameters.h
@@ -34,7 +34,6 @@ public:
 
     #define MP_TYPE_IS(name)    const   bool is##name()const{return set_type==DescriptorSetType::name;}
         MP_TYPE_IS(Instance)
-        MP_TYPE_IS(MaterialInstance)
         MP_TYPE_IS(PerMaterial)
         MP_TYPE_IS(PerFrame)
         MP_TYPE_IS(Global)
diff --git a/src/SceneGraph/RenderAssignBuffer.cpp b/src/SceneGraph/RenderAssignBuffer.cpp
index 7f04643b..51d9675a 100644
--- a/src/SceneGraph/RenderAssignBuffer.cpp
+++ b/src/SceneGraph/RenderAssignBuffer.cpp
@@ -36,7 +36,7 @@ void RenderAssignBuffer::Bind(MaterialInstance *mi)const
     Material *mtl=mi->GetMaterial();
 
     mtl->BindUBO(DescriptorSetType::PerFrame,mtl::SBS_LocalToWorld.name,ubo_l2w);
-    mtl->BindUBO(DescriptorSetType::MaterialInstance,mtl::SBS_MaterialInstance.name,ubo_mi);
+    mtl->BindUBO(DescriptorSetType::PerMaterial,mtl::SBS_MaterialInstance.name,ubo_mi);
 }
 
 void RenderAssignBuffer::Clear()
diff --git a/src/ShaderGen/MaterialCreateInfo.cpp b/src/ShaderGen/MaterialCreateInfo.cpp
index a67561dd..9b1a0ed0 100644
--- a/src/ShaderGen/MaterialCreateInfo.cpp
+++ b/src/ShaderGen/MaterialCreateInfo.cpp
@@ -166,7 +166,7 @@ bool MaterialCreateInfo::SetMaterialInstance(const AnsiString &glsl_codes,const
     hgl::strcpy(mi_ubo->name,DESCRIPTOR_NAME_MAX_LENGTH,SBS_MaterialInstance.name);
     mi_ubo->stage_flag=shader_stage_flag_bits;
 
-    mdi.AddUBO(shader_stage_flag_bits,DescriptorSetType::MaterialInstance,mi_ubo);
+    mdi.AddUBO(shader_stage_flag_bits,DescriptorSetType::PerMaterial,mi_ubo);
 
     const AnsiString MI_MAX_COUNT=AnsiString::numberOf(mi_max_count);
 
diff --git a/src/ShaderGen/ShaderCreateInfo.cpp b/src/ShaderGen/ShaderCreateInfo.cpp
index b59f7f2b..d3e948ca 100644
--- a/src/ShaderGen/ShaderCreateInfo.cpp
+++ b/src/ShaderGen/ShaderCreateInfo.cpp
@@ -155,7 +155,7 @@ bool ShaderCreateInfo::ProcSubpassInput()
 
 void ShaderCreateInfo::SetMaterialInstance(UBODescriptor *ubo,const AnsiString &mi)
 {
-    sdm->AddUBO(DescriptorSetType::MaterialInstance,ubo);
+    sdm->AddUBO(DescriptorSetType::PerMaterial,ubo);
     sdm->AddStruct(mtl::MaterialInstanceStruct);
 
     if(shader_stage==VK_SHADER_STAGE_VERTEX_BIT)