first step OK that it's to resumed to use L2W in VertexInputStream.

src/SceneGraph/Vulkan/VKMaterial.cpp

@@ -47,11 +47,6 @@ const bool Material::hasSet(const DescriptorSetType &dst)const
     return desc_manager->hasSet(dst);
 }
 
-const bool Material::hasAssign()const
-{
-    return vertex_input->hasAssign();
-}
-
 const VIL *Material::GetDefaultVIL()const
 {
     return vertex_input->GetDefaultVIL();

src/SceneGraph/Vulkan/VKMemoryAllocator.cpp

@@ -45,4 +45,12 @@ void VKMemoryAllocator::Flush(const VkDeviceSize size)
 {
     gpu_buffer->Flush(size);
 }
+
+bool VKMemoryAllocator::Write(const void *source,const uint64 offset,const uint64 size)
+{
+    if(!source||size==0)
+        return(false);
+
+    return gpu_buffer->Write(source,offset,size);
+}
 VK_NAMESPACE_END