fixed add stage item

cocos/renderer/memop/RecyclePool.hpp

@@ -59,7 +59,7 @@ class RecyclePool
         _data.clear();
     }
 
-    const T* getData(size_t index) const
+    T* getData(size_t index) const
     {
         if (index >= _count)
         {

cocos/renderer/renderer/BaseRenderer.cpp

@@ -159,9 +159,11 @@ void BaseRenderer::render(const View& view, const Scene* scene)
     // dispatch draw items to different stage
     _stageInfos->reset();
     StageItem stageItem;
-    std::vector<StageItem> stageItems;
     for (const auto& stage : view.stages)
     {
+        StageInfo* stageInfo = _stageInfos->add();
+        stageInfo->stage = stage;
+        stageInfo->items.clear();
         for (size_t i = 0, len = _drawItems->getLength(); i < len; i++)
         {
             const DrawItem* item = _drawItems->getData(i);
@@ -177,24 +179,21 @@ void BaseRenderer::render(const View& view, const Scene* scene)
                 stageItem.uniforms = item->uniforms;
                 stageItem.definesKeyHash = item->definesKeyHash;
 
-                stageItems.push_back(stageItem);
+                stageInfo->items.push_back(stageItem);
             }
         }
-        StageInfo* stageInfo = _stageInfos->add();
-        stageInfo->stage = stage;
-        stageInfo->items = &stageItems;
     }
 
     // render stages
     std::unordered_map<std::string, const StageCallback>::iterator foundIter;
     for (size_t i = 0, len = _stageInfos->getLength(); i < len; i++)
     {
-        const StageInfo* stageInfo = _stageInfos->getData(i);
+        StageInfo* stageInfo = _stageInfos->getData(i);
         foundIter = _stage2fn.find(stageInfo->stage);
         if (_stage2fn.end() != foundIter)
         {
             auto& fn = foundIter->second;
-            fn(view, *stageInfo->items);
+            fn(view, stageInfo->items);
         }
     }
 }

cocos/renderer/renderer/BaseRenderer.h

@@ -110,7 +110,8 @@ class BaseRenderer : public Ref
 
     struct StageInfo
     {
-        std::vector<StageItem>* items;
+    public:
+        std::vector<StageItem> items;
         std::string stage = "";
     };
 
@@ -128,6 +129,7 @@ class BaseRenderer : public Ref
     RecyclePool<DrawItem>* _drawItems = nullptr;
     RecyclePool<StageInfo>* _stageInfos = nullptr;
     RecyclePool<View>* _views = nullptr;
+    RecyclePool<StageItem>* _stageItems = nullptr;
 
     cocos2d::Mat4* _tmpMat4 = nullptr;