1 files changed, 16 insertions, 1 deletions
diff --git a/indra/llrender/llvertexbuffer.h b/indra/llrender/llvertexbuffer.h
index aa5df305a6..578cec3885 100644
--- a/indra/llrender/llvertexbuffer.h
+++ b/indra/llrender/llvertexbuffer.h
@@ -70,10 +70,16 @@ protected:
 	}
 };
 
+class LLGLFence
+{
+public:
+	virtual void placeFence() = 0;
+	virtual void wait() = 0;
+};
 
 //============================================================================
 // base class 
-
+class LLPrivateMemoryPool ;
 class LLVertexBuffer : public LLRefCount
 {
 public:
@@ -270,6 +276,15 @@ protected:
 	std::vector<MappedRegion> mMappedVertexRegions;
 	std::vector<MappedRegion> mMappedIndexRegions;
 
+	mutable LLGLFence* mFence;
+
+	void placeFence() const;
+	void waitFence() const;
+
+
+private:
+	static LLPrivateMemoryPool* sPrivatePoolp ;
+
 public:
 	static S32 sCount;
 	static S32 sGLCount;