WIP: GUI Toolkit

VBOManager.hh

@@ -2,20 +2,26 @@
 #define __OPENGLPLAYGROUND_VBOMANAGER_HH__
 
 #include <map>
-#include <tuple>
-#include <vector>
 #include <list>
+#include <memory>
 #include <cassert>
 
 #include <glbinding/gl/types.h>
 
 class VBOManager {
 public:
-  VBOManager();
-
+  static VBOManager& getInstance();
+  
   ~VBOManager();
 
+  VBOManager(VBOManager const& copy) = delete;
+  VBOManager& operator=(VBOManager const& copy) = delete;
+  
 private:
+  VBOManager();
+
+  static void init();
+  static std::unique_ptr<VBOManager> instance;
   
   class VBO;
 
@@ -53,6 +59,10 @@ public:
       assert(_vbo);
       return _vbo->getID();
     }
+
+    explicit operator bool() const noexcept {
+      return (_vbo != nullptr);
+    }
     
   private:
     VBOAlloc(VBO &vbo, size_t ofs, size_t size);