WIP: GUI Toolkit

VBOManager.cc

@@ -1,10 +1,26 @@
 #include <glbinding/gl/gl.h>
 #include <cassert>
+#include <mutex>
 
 #include "VBOManager.hh"
+#include "common.hh"
 
 using namespace gl;
 
+std::unique_ptr<VBOManager> VBOManager::instance{nullptr};
+static std::once_flag instance_flag;
+
+VBOManager& VBOManager::getInstance()
+{
+  std::call_once(instance_flag, init);
+  return *instance;
+}
+
+void VBOManager::init()
+{
+  instance.reset(new VBOManager{});
+}
+
 VBOManager::VBOManager()
 {
 }