Add Drawlist Vertex and Indexcount geteter (for debugging usage only)

include/pd/lithium/drawlist.hpp

@@ -43,6 +43,18 @@ class PD_API Drawlist {
   void Optimize();
   void Clear();
 
+  size_t GetNumVertices() const {
+    size_t count = 0;
+    for (const auto& cmd : pCommands) count += cmd.VertexCount;
+    return count;
+  }
+
+  size_t GetNumIndices() const {
+    size_t count = 0;
+    for (const auto& cmd : pCommands) count += cmd.IndexCount;
+    return count;
+  }
+
   /** Command Allocation */
   Command& NewCommand();
   bool HasCommands() { return pCommands.size() > 0; }

source/ui7/io.cpp

@@ -52,8 +52,8 @@ PD_API void UI7::IO::Update() {
   DrawlistRegestry.push_front(std::make_pair("CtxBackList", &Back));
   if (Font) ItemRowHeight = FontScale * Font->PixelHeight;
   // RegisterDrawList("CtxBackList", Back);
-  NumIndices = 0;   // FDL.pNumIndices;
-  NumVertices = 0;  // FDL.pNumVertices;
+  NumIndices = FDL.GetNumIndices();
+  NumVertices = FDL.GetNumVertices();
   LabelPool.ResetFast();
   DynObjPool.ResetFast();
   ImagePool.ResetFast();