Added QuadRenderer to render shaded/colored quads. Added DebugOverlay to World to show A* bidi search cost per cell.

OpenRA.Game/Graphics/QuadRenderer.cs

@@ -0,0 +1,60 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2011 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.Drawing;
+using OpenRA.FileFormats.Graphics;
+
+namespace OpenRA.Graphics
+{
+	public class QuadRenderer : Renderer.IBatchRenderer
+	{
+		Renderer renderer;
+		IShader shader;
+
+		Vertex[] vertices = new Vertex[Renderer.TempBufferSize];
+		int nv = 0;
+
+		public QuadRenderer(Renderer renderer, IShader shader)
+		{
+			this.renderer = renderer;
+			this.shader = shader;
+		}
+
+		public void Flush()
+		{
+			if (nv > 0)
+			{
+				shader.Render(() =>
+				{
+					var vb = renderer.GetTempVertexBuffer();
+					vb.SetData(vertices, nv);
+					renderer.DrawBatch(vb, 0, nv, PrimitiveType.QuadList);
+				});
+
+				nv = 0;
+			}
+		}
+
+		public void FillRect(RectangleF r, Color color)
+		{
+			Renderer.CurrentBatchRenderer = this;
+
+			if (nv + 4 > Renderer.TempBufferSize)
+				Flush();
+
+			vertices[nv] = new Vertex(new float2(r.Left, r.Top), new float2(color.R / 255.0f, color.G / 255.0f), new float2(color.B / 255.0f, color.A / 255.0f));
+			vertices[nv + 1] = new Vertex(new float2(r.Right, r.Top), new float2(color.R / 255.0f, color.G / 255.0f), new float2(color.B / 255.0f, color.A / 255.0f));
+			vertices[nv + 2] = new Vertex(new float2(r.Right, r.Bottom), new float2(color.R / 255.0f, color.G / 255.0f), new float2(color.B / 255.0f, color.A / 255.0f));
+			vertices[nv + 3] = new Vertex(new float2(r.Left, r.Bottom), new float2(color.R / 255.0f, color.G / 255.0f), new float2(color.B / 255.0f, color.A / 255.0f));
+
+			nv += 4;
+		}
+	}
+}