Created Diamond.Util, added SubArray and adjusted references.

Diamond/Buffers/GLBuffer.cs

@@ -1,5 +1,6 @@
 using System;
 using System.Runtime.InteropServices;
+using Diamond.Util;
 using OpenTK.Graphics.OpenGL4;
 
 namespace Diamond.Buffers
@@ -30,7 +31,7 @@ namespace Diamond.Buffers
             GL.BufferData(Target, (IntPtr) (size * data.Length), data, Usage);
         }
 
-        public void SubData<T>(SubArray<T> data) where T : struct
+        public void SubData(SubArray<T> data)
         {
             var size = Marshal.SizeOf<T>();
             Bind();

Diamond/Diamond.csproj

@@ -52,7 +52,7 @@
   </ItemGroup>
   <ItemGroup>
     <Compile Include="Buffers\GLBuffer.cs" />
-    <Compile Include="Buffers\SubArray.cs" />
+    <Compile Include="Util\SubArray.cs" />
     <Compile Include="Buffers\VertexDataAttribute.cs" />
     <Compile Include="GLObject.cs" />
     <Compile Include="Level\Level.cs" />

Diamond/Level/TileGroup.cs

@@ -1,5 +1,6 @@
 using Diamond.Buffers;
 using Diamond.Shaders;
+using Diamond.Util;
 
 namespace Diamond.Level
 {

Diamond/Mesh.cs

@@ -3,6 +3,7 @@ using System.Diagnostics.PerformanceData;
 using System.IO;
 using System.Linq;
 using Diamond.Buffers;
+using Diamond.Util;
 using Newtonsoft.Json;
 using OpenTK;
 using OpenTK.Graphics.OpenGL4;

Diamond/Util/SubArray.cs

@@ -3,7 +3,7 @@ using System.Collections;
 using System.Collections.Generic;
 using System.Linq;
 
-namespace Diamond.Buffers
+namespace Diamond.Util
 {
     public class SubArray<T> : IEnumerable<T>
     {