added null renderer, game runs. good place to start.

OpenRa.Gl/GraphicsDevice.cs

@@ -0,0 +1,65 @@
+using System;
+using System.Collections.Generic;
+using System.Linq;
+using System.Text;
+using System.Windows.Forms;
+using System.Drawing;
+using System.IO;
+
+namespace OpenRa.Gl
+{
+    public class GraphicsDevice
+    {
+        public GraphicsDevice(Control host, int width, int height, bool fullscreen, bool vsync) { }
+        public void EnableScissor(int left, int top, int width, int height) { }
+        public void DisableScissor() { }
+        public void Begin() { }
+        public void End() { }
+        public void Clear(Color c) { }
+        public void Present() { }
+        public void DrawIndexedPrimitives(PrimitiveType pt, Range<int> vertices, Range<int> indices) { }
+        public void DrawIndexedPrimitives(PrimitiveType pt, int numVerts, int numPrimitives) { }
+    }
+
+    public struct Range<T>
+    {
+        public Range(T start, T end) { }
+    }
+
+    public class VertexBuffer<T> where T : struct
+    {
+        public VertexBuffer(GraphicsDevice dev, int size, VertexFormat fmt) { }
+        public void SetData(T[] data) { }
+        public void Bind() { }
+    }
+
+    public class IndexBuffer
+    {
+        public IndexBuffer(GraphicsDevice dev, int size) { }
+        public void SetData(ushort[] data) { }
+        public void Bind() { }
+    }
+
+    public class Shader
+    {
+        public Shader(GraphicsDevice dev, Stream s) { }
+        public ShaderQuality Quality { get; set; }
+        public void Render(Action a) { }
+        public void SetValue(string param, Texture texture) { }
+        public void SetValue<T>(string param, T t) where T : struct { }
+        public void Commit() { }
+
+    }
+
+    public class Texture
+    {
+        public Texture(GraphicsDevice dev, Bitmap bitmap) { }
+        public void SetData(Bitmap bitmap) { }
+    }
+
+    [Flags]
+    public enum VertexFormat { Position, Texture2 }
+
+    public enum ShaderQuality { Low, Medium, High }
+    public enum PrimitiveType { PointList, LineList, TriangleList }
+}