More seperate cc files, font & overlay rendering

Overlay.hh

@@ -0,0 +1,36 @@
+#ifndef __OPENGLPLAYGROUND_OVERLAY_HH__
+#define __OPENGLPLAYGROUND_OVERLAY_HH__
+
+#include <vector>
+#include <glbinding/gl/types.h>
+
+#include "VBOManager.hh"
+
+class Program;
+
+struct ovlVertexAttribs {
+  uint16_t vertex[2];
+  uint16_t texCoords[2];
+} __attribute__((__packed__));
+
+class Overlay {
+public:
+  Overlay(VBOManager& vboManager, std::vector<ovlVertexAttribs> const& vas,
+	  Program& prog);
+
+  Overlay(Overlay const& copy) = delete;
+  Overlay& operator=(Overlay const& copy) = delete;
+
+  ~Overlay();
+
+  void draw(Program *override = nullptr) const;
+
+private:
+  VBOManager& vboManager_;
+  VBOManager::VBOAlloc vbo_;
+  Program& prog_;
+  gl::GLuint vaID_;
+  size_t vertices_;
+};
+
+#endif