untie the engine from SDL2 and MiniTK

2015-06-28 18:54:54 +02:00
parent f325463204
commit 17f3466451
27 changed files with 196 additions and 146 deletions
--- a/OpenRA.Platforms.Default/VertexBuffer.cs
+++ b/OpenRA.Platforms.Default/VertexBuffer.cs
@@ -0,0 +1,90 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2015 The OpenRA Developers (see AUTHORS)
+ * This file is part of OpenRA, which is free software. It is made
+ * available to you under the terms of the GNU General Public License
+ * as published by the Free Software Foundation. For more information,
+ * see COPYING.
+ */
+#endregion
+
+using System;
+using System.Runtime.InteropServices;
+using OpenTK.Graphics.OpenGL;
+
+namespace OpenRA.Platforms.Default
+{
+	public sealed class VertexBuffer<T> : IVertexBuffer<T>
+			where T : struct
+	{
+		static readonly int VertexSize = Marshal.SizeOf(typeof(T));
+		int buffer;
+		bool disposed;
+
+		public VertexBuffer(int size)
+		{
+			GL.GenBuffers(1, out buffer);
+			ErrorHandler.CheckGlError();
+			Bind();
+			GL.BufferData(BufferTarget.ArrayBuffer,
+				new IntPtr(VertexSize * size),
+				new T[size],
+				BufferUsageHint.DynamicDraw);
+			ErrorHandler.CheckGlError();
+		}
+
+		public void SetData(T[] data, int length)
+		{
+			SetData(data, 0, length);
+		}
+
+		public void SetData(T[] data, int start, int length)
+		{
+			Bind();
+			GL.BufferSubData(BufferTarget.ArrayBuffer,
+				new IntPtr(VertexSize * start),
+				new IntPtr(VertexSize * length),
+				data);
+			ErrorHandler.CheckGlError();
+		}
+
+		public void SetData(IntPtr data, int start, int length)
+		{
+			Bind();
+			GL.BufferSubData(BufferTarget.ArrayBuffer,
+				new IntPtr(VertexSize * start),
+				new IntPtr(VertexSize * length),
+				data);
+			ErrorHandler.CheckGlError();
+		}
+
+		public void Bind()
+		{
+			GL.BindBuffer(BufferTarget.ArrayBuffer, buffer);
+			ErrorHandler.CheckGlError();
+			GL.VertexPointer(3, VertexPointerType.Float, VertexSize, IntPtr.Zero);
+			ErrorHandler.CheckGlError();
+			GL.TexCoordPointer(4, TexCoordPointerType.Float, VertexSize, new IntPtr(12));
+			ErrorHandler.CheckGlError();
+		}
+
+		~VertexBuffer()
+		{
+			Game.RunAfterTick(() => Dispose(false));
+		}
+
+		public void Dispose()
+		{
+			Game.RunAfterTick(() => Dispose(true));
+			GC.SuppressFinalize(this);
+		}
+
+		void Dispose(bool disposing)
+		{
+			if (disposed)
+				return;
+			disposed = true;
+			GL.DeleteBuffers(1, ref buffer);
+		}
+	}
+}