git-svn-id: svn://svn.ijw.co.nz/svn/OpenRa@1186 993157c7-ee19-0410-b2c4-bb4e9862e678

OpenRa.Game/HardwarePalette.cs

@@ -0,0 +1,55 @@
+using System;
+using System.Collections.Generic;
+using System.Text;
+using BluntDirectX.Direct3D;
+using System.Drawing;
+using System.IO;
+using OpenRa.FileFormats;
+
+namespace OpenRa.Game
+{
+	class HardwarePalette
+	{
+		const int maxEntries = 16;			// dont need anything like this many, 
+											// but the hardware likes square textures better
+
+		Bitmap bitmap = new Bitmap(256, maxEntries);
+		GraphicsDevice device;
+		int allocated = 0;
+
+		Texture paletteTexture;
+
+		public HardwarePalette(GraphicsDevice device)
+		{
+			this.device = device;
+		}
+
+		public void Resolve()
+		{
+			const string filename = "../../../palette-cache.png";
+			bitmap.Save(filename);
+
+			using (Stream s = File.OpenRead(filename))
+				paletteTexture = Texture.Create(s, device);
+		}
+
+		public Texture PaletteTexture
+		{
+			get
+			{
+				if (paletteTexture == null)
+					Resolve();
+
+				return paletteTexture;
+			}
+		}
+
+		public int AddPalette(Palette p)
+		{
+			for (int i = 0; i < 256; i++)
+				bitmap.SetPixel(i, allocated, p.GetColor(i));
+
+			return allocated++;
+		}
+	}
+}