vao

gl/bindable.h

@@ -0,0 +1,27 @@
+#pragma once
+
+namespace gl
+{
+    template <typename T>
+    class bindable
+    {
+    private:
+        static bindable<T>* active;
+
+    public:
+        void bind()
+        {
+            if (active == this)
+                return;
+            active = this;
+            T::bind(*static_cast<T*>(active));
+        }
+        void unbind()
+        {
+            active = nullptr;
+            T::bind(0);
+        }
+    };
+
+    template <typename T> bindable<T>* bindable<T>::active;
+}