Added VAO handler (attribute saving handler).

RecrownedAthenaeum/Graphics/VertexArrayHandle.cs

@@ -0,0 +1,39 @@
+using System;
+using OpenTK.Graphics.OpenGL;
+namespace RecrownedAthenaeum.Graphics {
+    public class VertexArrayHandle : IDisposable {
+        private bool disposed;
+        private int handle;
+        private bool begun;
+        public VertexArrayHandle() {
+            handle = GL.GenVertexArray();
+        }
+
+        public void Begin() {
+            if (begun) throw new InvalidOperationException("The VertexArrayHandle has already been started.");
+            GL.BindVertexArray(handle);
+            begun = true;
+        }
+        public void End() {
+            if (!begun) throw new InvalidOperationException("The VertexArrayHandle has never been started.");
+            GL.BindVertexArray(0);
+            begun = false;
+        }
+        public void Dispose() {
+            Dispose(true);
+            GC.SuppressFinalize(this);
+        }
+        protected virtual void Dispose(bool disposing) {
+            if (disposed) return;
+            if (disposing) {
+
+            }
+            GL.BindVertexArray(0);
+            GL.DeleteVertexArray(handle);
+            disposed = true;
+        }
+        ~VertexArrayHandle() {
+            Dispose(false);
+        }
+    }
+}