split renderer into a file per class

OpenRA.Gl/IndexBuffer.cs

@@ -0,0 +1,63 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using OpenRA.FileFormats.Graphics;
+using Tao.OpenGl;
+
+namespace OpenRA.GlRenderer
+{
+	public class IndexBuffer : IIndexBuffer, IDisposable
+	{
+		int buffer;
+
+		public IndexBuffer(GraphicsDevice dev, int size)
+		{
+			Gl.glGenBuffers(1, out buffer);
+			GraphicsDevice.CheckGlError();
+		}
+
+		public void SetData(ushort[] data)
+		{
+			Bind();
+			Gl.glBufferData(Gl.GL_ELEMENT_ARRAY_BUFFER,
+				new IntPtr(2 * data.Length), data, Gl.GL_DYNAMIC_DRAW);
+			GraphicsDevice.CheckGlError();
+		}
+
+		public void Bind()
+		{
+			Gl.glBindBuffer(Gl.GL_ELEMENT_ARRAY_BUFFER, buffer);
+			GraphicsDevice.CheckGlError();
+		}
+
+		bool disposed;
+		public void Dispose()
+		{
+			if (disposed) return;
+			GC.SuppressFinalize(this);
+			Gl.glDeleteBuffers(1, ref buffer);
+			GraphicsDevice.CheckGlError();
+			disposed = true;
+		}
+
+		//~IndexBuffer() { Dispose(); }
+	}
+}