Loads and loads of small improvements I added while developing on my game

SMCode/SM.Base/Shaders/Extensions/ExtensionManager.cs

@@ -0,0 +1,19 @@
+#region usings
+
+using SM.OGL.Shaders;
+
+#endregion
+
+namespace SM.Base.ShaderExtension
+{
+    internal class ExtensionManager
+    {
+        internal static void InitExtensions()
+        {
+            ShaderExtensions.AddAssemblyExtensions("SM_base", "SM.Base.Shaders.Extensions");
+
+            ShaderExtensions.Extensions["SM_base_vertex_basic"].StringOverrides["instanceMax"] =
+                SMRenderer.MaxInstances.ToString();
+        }
+    }
+}