Moved frameIndex to KRSurface

kraken/KRSurface.h

@@ -61,6 +61,8 @@ public:
   void createRenderPasses();
   KRRenderPass& getForwardOpaquePass();
 
+  void endFrame();
+
 #ifdef WIN32
   HWND m_hWnd;
 #endif
@@ -81,6 +83,9 @@ public:
 
   std::unique_ptr<KRRenderPass> m_forwardOpaquePass;
 
+  // TODO - This needs to be advanced per swap chain
+  uint64_t m_frameIndex;
+
 private:
   void destroySwapChain();
   KrResult createSwapChain();