diff --git a/Hydrogent/interface/HnRenderDelegate.hpp b/Hydrogent/interface/HnRenderDelegate.hpp
index 716a22a3..1c18f861 100644
--- a/Hydrogent/interface/HnRenderDelegate.hpp
+++ b/Hydrogent/interface/HnRenderDelegate.hpp
@@ -78,6 +78,9 @@ struct HnRenderDelegateMemoryStats
 
         /// The number of allcations.
         Uint32 AllocationCount = 0;
+
+        /// The amount of index data pending upload, in bytes.
+        Uint64 PendingDataSize = 0;
     };
     /// Index pool usage statistics.
     IndexPoolUsage IndexPool;
@@ -96,6 +99,9 @@ struct HnRenderDelegateMemoryStats
 
         /// The number of vertices allocated from the pool.
         Uint64 AllocatedVertexCount = 0;
+
+        /// The amount vertex data pending upload, in bytes.
+        Uint64 PendingDataSize = 0;
     };
     /// Vertex pool usage statistics.
     VertexPoolUsage VertexPool;
diff --git a/Hydrogent/src/HnRenderDelegate.cpp b/Hydrogent/src/HnRenderDelegate.cpp
index 13529012..0502ec3d 100644
--- a/Hydrogent/src/HnRenderDelegate.cpp
+++ b/Hydrogent/src/HnRenderDelegate.cpp
@@ -825,11 +825,13 @@ HnRenderDelegateMemoryStats HnRenderDelegate::GetMemoryStats() const
     MemoryStats.IndexPool.CommittedSize   = IndexUsage.CommittedSize;
     MemoryStats.IndexPool.UsedSize        = IndexUsage.UsedSize;
     MemoryStats.IndexPool.AllocationCount = IndexUsage.AllocationCount;
+    MemoryStats.IndexPool.PendingDataSize = m_GeometryPool->GetPendingIndexDataSize();
 
     MemoryStats.VertexPool.CommittedSize        = VertexUsage.CommittedMemorySize;
     MemoryStats.VertexPool.UsedSize             = VertexUsage.UsedMemorySize;
     MemoryStats.VertexPool.AllocationCount      = VertexUsage.AllocationCount;
     MemoryStats.VertexPool.AllocatedVertexCount = VertexUsage.AllocatedVertexCount;
+    MemoryStats.VertexPool.PendingDataSize      = m_GeometryPool->GetPendingVertexDataSize();
 
     MemoryStats.Atlas.CommittedSize   = AtlasUsage.CommittedSize;
     MemoryStats.Atlas.AllocationCount = AtlasUsage.AllocationCount;