diff --git a/CMSceneGraph b/CMSceneGraph
index c4642ea8..ad2504b4 160000
--- a/CMSceneGraph
+++ b/CMSceneGraph
@@ -1 +1 @@
-Subproject commit c4642ea87cb4abf4b68e94a63d868bdd66666dbe
+Subproject commit ad2504b4bd5390b887ef9abfc395552493cd5d0c
diff --git a/inc/hgl/graph/VKBuffer.h b/inc/hgl/graph/VKBuffer.h
index f886fbd9..33e0b81f 100644
--- a/inc/hgl/graph/VKBuffer.h
+++ b/inc/hgl/graph/VKBuffer.h
@@ -34,8 +34,8 @@ public:
 
     virtual ~GPUBuffer();
 
-            VkBuffer                   GetBuffer    (){return buf.buffer;}
-            GPUMemory *                GetMemory    (){return buf.memory;}
+            VkBuffer                   GetBuffer    ()const{return buf.buffer;}
+            GPUMemory *                GetMemory    ()const{return buf.memory;}
     const   VkDescriptorBufferInfo *   GetBufferInfo()const{return &buf.info;}
 
             void *  Map     ()                                              {return buf.memory->Map();}
diff --git a/inc/hgl/graph/VKDescriptorSets.h b/inc/hgl/graph/VKDescriptorSets.h
index 363370a9..2be1d9fb 100644
--- a/inc/hgl/graph/VKDescriptorSets.h
+++ b/inc/hgl/graph/VKDescriptorSets.h
@@ -15,7 +15,8 @@ class DescriptorSets
 
     VkPipelineLayout pipeline_layout;
 
-    ObjectList<VkDescriptorImageInfo> desc_image_info;
+    ObjectList<VkDescriptorBufferInfo> buffer_list;
+    ObjectList<VkDescriptorImageInfo> image_list;
     List<VkWriteDescriptorSet> wds_list;
 
 private:
@@ -40,6 +41,7 @@ public:
 
     void Clear();
     bool BindUBO(const int binding,const GPUBuffer *);
+    bool BindUBO(const int binding,const GPUBuffer *,const VkDeviceSize offset,const VkDeviceSize range);
     bool BindUBODynamic(const int binding,const GPUBuffer *);
     bool BindSampler(const int binding,Texture *,Sampler *);
     void Update();
diff --git a/src/RenderDevice/VKDescriptorSets.cpp b/src/RenderDevice/VKDescriptorSets.cpp
index 642c35f0..0e04fd8f 100644
--- a/src/RenderDevice/VKDescriptorSets.cpp
+++ b/src/RenderDevice/VKDescriptorSets.cpp
@@ -5,10 +5,42 @@
 #include<hgl/graph/VKSampler.h>
 
 VK_NAMESPACE_BEGIN
+namespace
+{
+    struct WriteDescriptorSet:public vkstruct<VkWriteDescriptorSet,VK_STRUCTURE_TYPE_WRITE_DESCRIPTOR_SET>
+    {
+    public:
+
+        WriteDescriptorSet(VkDescriptorSet desc_set,const uint32_t binding,const VkDescriptorType desc_type)
+        {            
+            dstSet          = desc_set;
+            dstBinding      = binding;
+            dstArrayElement = 0;
+            descriptorCount = 1;
+            descriptorType  = desc_type;
+        }
+
+        WriteDescriptorSet(VkDescriptorSet desc_set,const uint32_t binding,const VkDescriptorBufferInfo *buf_info,const VkDescriptorType desc_type=VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER):WriteDescriptorSet(desc_set,binding,desc_type)
+        {            
+            pImageInfo       = nullptr;
+            pBufferInfo      = buf_info;
+            pTexelBufferView = nullptr;
+        }
+
+        WriteDescriptorSet(VkDescriptorSet desc_set,const uint32_t binding,const VkDescriptorImageInfo *img_info):WriteDescriptorSet(desc_set,binding,VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER)
+        {            
+            pImageInfo      = img_info;
+            pBufferInfo     = nullptr;
+            pTexelBufferView= nullptr;
+        }
+    };//struct WriteDescriptorSet
+}//namespace
+
 void DescriptorSets::Clear()
 {
+    buffer_list.ClearData();
+    image_list.ClearData();
     wds_list.ClearData();
-    desc_image_info.ClearData();
 }
 
 bool DescriptorSets::BindUBO(const int binding,const GPUBuffer *buf)
@@ -16,16 +48,26 @@ bool DescriptorSets::BindUBO(const int binding,const GPUBuffer *buf)
     if(binding<0||!buf)
         return(false);
 
-    WriteDescriptorSet wds;
+    WriteDescriptorSet wds(desc_set,binding,buf->GetBufferInfo());
 
-    wds.dstSet           = desc_set;
-    wds.dstBinding       = binding;
-    wds.dstArrayElement  = 0;
-    wds.descriptorCount  = 1;
-    wds.descriptorType   = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER;
-    wds.pImageInfo       = nullptr;
-    wds.pBufferInfo      = buf->GetBufferInfo();
-    wds.pTexelBufferView = nullptr;
+    wds_list.Add(wds);
+    return(true);
+}
+
+bool DescriptorSets::BindUBO(const int binding,const GPUBuffer *buf,const VkDeviceSize offset,const VkDeviceSize range)
+{
+    if(binding<0||!buf)
+        return(false);
+
+    VkDescriptorBufferInfo *buf_info=new VkDescriptorBufferInfo;
+
+    buf_info->buffer=buf->GetBuffer();
+    buf_info->offset=offset;
+    buf_info->range=range;
+
+    buffer_list.Add(buf_info);
+
+    WriteDescriptorSet wds(desc_set,binding,buf_info);
 
     wds_list.Add(wds);
     return(true);
@@ -36,16 +78,7 @@ bool DescriptorSets::BindUBODynamic(const int binding,const GPUBuffer *buf)
     if(binding<0||!buf)
         return(false);
         
-    WriteDescriptorSet wds;
-
-    wds.dstSet           = desc_set;
-    wds.dstBinding       = binding;
-    wds.dstArrayElement  = 0;
-    wds.descriptorCount  = 1;
-    wds.descriptorType   = VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC;
-    wds.pImageInfo       = nullptr;
-    wds.pBufferInfo      = buf->GetBufferInfo();
-    wds.pTexelBufferView = nullptr;
+    WriteDescriptorSet wds(desc_set,binding,buf->GetBufferInfo(),VK_DESCRIPTOR_TYPE_UNIFORM_BUFFER_DYNAMIC);
 
     wds_list.Add(wds);
     return(true);
@@ -57,23 +90,15 @@ bool DescriptorSets::BindSampler(const int binding,Texture *tex,Sampler *sampler
         return(false);
 
     VkDescriptorImageInfo *image_info=new VkDescriptorImageInfo;
+
     image_info->imageView    =tex->GetVulkanImageView();
-    //image_info->imageLayout  =tex->GetImageLayout();
+//          image_info.imageLayout  =tex->GetImageLayout();
     image_info->imageLayout  =VK_IMAGE_LAYOUT_SHADER_READ_ONLY_OPTIMAL;
     image_info->sampler      =*sampler;
 
-    desc_image_info.Add(image_info);
-    
-    WriteDescriptorSet wds;
+    image_list.Add(image_info);
 
-    wds.dstSet           = desc_set;
-    wds.dstBinding       = binding;
-    wds.dstArrayElement  = 0;
-    wds.descriptorCount  = 1;
-    wds.descriptorType   = VK_DESCRIPTOR_TYPE_COMBINED_IMAGE_SAMPLER;
-    wds.pImageInfo       = image_info;
-    wds.pBufferInfo      = nullptr;
-    wds.pTexelBufferView = nullptr;
+    WriteDescriptorSet wds(desc_set,binding,image_info);
 
     wds_list.Add(wds);
     return(true);