diff --git a/inc/hgl/graph/VKRenderableInstance.h b/inc/hgl/graph/VKRenderableInstance.h
index 71309b21..811dd2b5 100644
--- a/inc/hgl/graph/VKRenderableInstance.h
+++ b/inc/hgl/graph/VKRenderableInstance.h
@@ -22,6 +22,8 @@ class RenderableInstance
     VkBuffer *          buffer_list;
     VkDeviceSize *      buffer_size;
 
+    uint32_t            buffer_hash;
+
 private:
 
     friend RenderableInstance *CreateRenderableInstance(Renderable *,MaterialInstance *,Pipeline *);
@@ -44,6 +46,8 @@ public:
     const   uint32_t            GetIndexBufferOffset()const{return render_obj->GetIndexBufferOffset();}
     const   uint32_t            GetDrawCount        ()const{return render_obj->GetDrawCount();}
 
+    const   uint32_t            GetBufferHash       ()const{return buffer_hash;}
+
             DescriptorSets *    GetMIDescSets       ()const{return mat_inst->GetDescriptorSets();}
             DescriptorSets *    GetRIDescSets       ()const{return descriptor_sets;}
 
diff --git a/src/SceneGraph/Vulkan/VKRenderableInstance.cpp b/src/SceneGraph/Vulkan/VKRenderableInstance.cpp
index 7c611677..59a8c52b 100644
--- a/src/SceneGraph/Vulkan/VKRenderableInstance.cpp
+++ b/src/SceneGraph/Vulkan/VKRenderableInstance.cpp
@@ -2,8 +2,12 @@
 #include<hgl/graph/VKMaterialInstance.h>
 #include<hgl/graph/VKMaterial.h>
 #include<hgl/graph/VKVertexAttribBuffer.h>
+#include<hgl/util/hash/Hash.h>
 
 VK_NAMESPACE_BEGIN
+
+using namespace util;
+
 RenderableInstance::RenderableInstance(Renderable *r,MaterialInstance *mi,Pipeline *p,const uint32_t count,VkBuffer *bl,VkDeviceSize *bs)
 {
     render_obj=r;
@@ -15,8 +19,13 @@ RenderableInstance::RenderableInstance(Renderable *r,MaterialInstance *mi,Pipeli
     buffer_count=count;
     buffer_list=bl;
     buffer_size=bs;
-}
 
+    if(buffer_count>0)
+        CountHash<HASH::Adler32>(buffer_list,buffer_count*sizeof(VkBuffer),(void *)&buffer_hash);
+    else
+        buffer_hash=0;
+}
+ 
 RenderableInstance::~RenderableInstance()
 {
     SAFE_CLEAR(descriptor_sets);