diff --git a/Quik/OpenGL/GLEnum.cs b/Quik/OpenGL/GLEnum.cs
index 296f8b5..edd1ff0 100644
--- a/Quik/OpenGL/GLEnum.cs
+++ b/Quik/OpenGL/GLEnum.cs
@@ -18,6 +18,7 @@ namespace Quik.OpenGL
 
         GL_UNSIGNED_BYTE = 0x1401,
         GL_UNSIGNED_SHORT = 0x1403,
+        GL_UNSIGNED_INT = 0x1405,
         GL_FLOAT = 0x1406,
 
         GL_RED = 0x1903,
diff --git a/Quik/VertexGenerator/DrawQueue.cs b/Quik/VertexGenerator/DrawQueue.cs
index a905bd1..c498aed 100644
--- a/Quik/VertexGenerator/DrawQueue.cs
+++ b/Quik/VertexGenerator/DrawQueue.cs
@@ -1,16 +1,16 @@
 using System;
+using System.Collections;
 using System.Collections.Generic;
 using System.Runtime.CompilerServices;
 
 namespace Quik.VertexGenerator
 {
-    public class DrawQueue
+    public class DrawQueue : IEnumerable<DrawCall>
     {
         private readonly RefList<QuikVertex> _vertices = new RefList<QuikVertex>();
         private readonly RefList<int> _elements = new RefList<int>();
         private readonly List<DrawCall> _drawCalls = new List<DrawCall>();
         private int _start;
-        private int _count;
         private int _baseOffset;
         private QuikRectangle _bounds;
         private QuikTexture _texture;
@@ -35,7 +35,6 @@ namespace Quik.VertexGenerator
         public void StartDrawCall(in QuikRectangle bounds, QuikTexture texture, int baseOffset)
         {
             _start = ElementCount;
-            _count = 0;
             _texture = texture;
             _bounds = bounds;
             _baseOffset = baseOffset;
@@ -87,8 +86,12 @@ namespace Quik.VertexGenerator
         [MethodImpl(MethodImplOptions.AggressiveInlining)]
         public void EndDrawCall()
         {
-            _drawCalls.Add(new DrawCall(_start, _count, _bounds, _texture));
+            int count = ElementCount - _start;
+            _drawCalls.Add(new DrawCall(_start, count, _bounds, _texture));
         }
+
+        public IEnumerator<DrawCall> GetEnumerator() => _drawCalls.GetEnumerator();
+        IEnumerator IEnumerable.GetEnumerator() => _drawCalls.GetEnumerator();
     }
 
     public struct DrawCall