General progress on getting OpenGL based rendering.

src/SlatedGameToolkit.Framework/Exceptions/OpenGLErrorException.cs

@@ -0,0 +1,29 @@
+using System;
+using SlatedGameToolkit.Framework.Graphics;
+using SlatedGameToolkit.Framework.Graphics.Window;
+
+namespace SlatedGameToolkit.Framework.Exceptions
+{
+    public class OpenGLErrorException : OpenGLException {
+        public uint ErrorCode { get; private set; }
+        public OpenGLErrorException(uint errorCode) : base() {
+        }
+
+        public OpenGLErrorException(uint errorCode, string message) : base(message) {
+
+        }
+        
+        public OpenGLErrorException(uint errorCode, string message, Exception inner) : base(message, inner) {
+        }
+
+        /// <summary>
+        /// Checks the current context for OpenGL errors that has occurred and throws an exception if there is one.
+        /// </summary>
+        public static void CheckGLErrorStatus() {
+            uint errorCode = WindowContextsManager.CurrentWindowContext.GetGLStatus();
+            if (errorCode != (uint) GLEnums.GL_NO_ERROR) {
+                throw new OpenGLErrorException(errorCode, "OpenGL error: " + errorCode.ToString());
+            }
+        }
+    }
+}

src/SlatedGameToolkit.Framework/Exceptions/OpenGLException.cs

@@ -1,4 +1,6 @@
 using System;
+using SlatedGameToolkit.Framework.Graphics;
+using SlatedGameToolkit.Framework.Graphics.Window;
 
 namespace SlatedGameToolkit.Framework.Exceptions
 {