newly material instance stat,but can't run.

inc/hgl/graph/MaterialRenderList.h

@@ -35,10 +35,11 @@ private:
         void Set(Renderable *);
     };
 
-    MaterialInstanceSets mi_set;
+    SortedSets<int> mi_id_set;
     DataArray<RenderItem> ri_array;
     uint ri_count;
 
+    void StatMI();
     void Stat();
 
 protected:

inc/hgl/graph/RenderNode.h

@@ -22,8 +22,6 @@ namespace hgl
         };
 
         using RenderNodeList=List<RenderNode>;
-
-        using MaterialInstanceSets=SortedSets<MaterialInstance *>;
     }//namespace graph
 }//namespace hgl
 #endif//HGL_GRAPH_RENDER_NODE_INCLUDE

src/SceneGraph/MaterialRenderList.cpp

@@ -91,6 +91,7 @@ void MaterialRenderList::End()
 
     if(node_count<=0)return;
 
+    StatMI();
     Stat();
 
     //写入LocalToWorld数据
@@ -104,6 +105,19 @@ void MaterialRenderList::RenderItem::Set(Renderable *ri)
     vid         =ri->GetVertexInputData();
 }
 
+void MaterialRenderList::StatMI()
+{
+    mi_id_set.Clear();
+
+    for(RenderNode &rn:rn_list)
+        mi_id_set.Add(rn.ri->GetMaterialInstance()->GetMIID());
+
+    if(mi_id_set.GetCount()>mtl->GetMIMaxCount())
+    {
+        //超出最大数量了怎么办？？？
+    }
+}
+
 void MaterialRenderList::Stat()
 {
     const uint count=rn_list.GetCount();
@@ -112,8 +126,6 @@ void MaterialRenderList::Stat()
     ri_array.Clear();
     ri_array.Alloc(count);
 
-    mi_set.Clear();
-
     RenderItem *ri=ri_array.GetData();
             
     ri_count=1;