Rename OpenRA.Gl -> OpenRA.Renderer.Cg

2010-11-11 23:11:48 +13:00
parent bfb076b9bc
commit 64a7592fed
15 changed files with 134 additions and 132 deletions
--- a/OpenRA.Renderer.Cg/Shader.cs
+++ b/OpenRA.Renderer.Cg/Shader.cs
@@ -0,0 +1,87 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007-2010 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 LICENSE.
+ */
+#endregion
+
+using System;
+using System.IO;
+using OpenRA.FileFormats;
+using OpenRA.FileFormats.Graphics;
+using Tao.Cg;
+
+namespace OpenRA.Renderer.Cg
+{
+	public class Shader : IShader
+	{
+		IntPtr effect;
+		IntPtr technique;
+		GraphicsDevice dev;
+
+		public Shader(GraphicsDevice dev, string name)
+		{
+			this.dev = dev;
+			string code;
+			using (var file = new StreamReader(FileSystem.Open("cg{0}{1}.fx".F(Path.DirectorySeparatorChar, name))))
+				code = file.ReadToEnd();
+			effect = Tao.Cg.Cg.cgCreateEffect(dev.cgContext, code, null);
+
+			if (effect == IntPtr.Zero)
+			{
+				var err = Tao.Cg.Cg.cgGetErrorString(Tao.Cg.Cg.cgGetError());
+				var results = Tao.Cg.Cg.cgGetLastListing(dev.cgContext);
+				throw new InvalidOperationException(
+					string.Format("Cg compile failed ({0}):\n{1}", err, results));
+			}
+
+			technique = Tao.Cg.Cg.cgGetFirstTechnique(effect);
+			if (technique == IntPtr.Zero)
+				throw new InvalidOperationException("No techniques");
+			while (Tao.Cg.Cg.cgValidateTechnique(technique) == 0)
+			{
+				technique = Tao.Cg.Cg.cgGetNextTechnique(technique);
+				if (technique == IntPtr.Zero)
+					throw new InvalidOperationException("No valid techniques");
+			}
+		}
+
+		public void Render(Action a)
+		{
+			Tao.Cg.CgGl.cgGLEnableProfile(dev.vertexProfile);
+			Tao.Cg.CgGl.cgGLEnableProfile(dev.fragmentProfile);
+
+			var pass = Tao.Cg.Cg.cgGetFirstPass(technique);
+			while (pass != IntPtr.Zero)
+			{
+				Tao.Cg.Cg.cgSetPassState(pass);
+				a();
+				Tao.Cg.Cg.cgResetPassState(pass);
+				pass = Tao.Cg.Cg.cgGetNextPass(pass);
+			}
+
+			Tao.Cg.CgGl.cgGLDisableProfile(dev.fragmentProfile);
+			Tao.Cg.CgGl.cgGLDisableProfile(dev.vertexProfile);
+		}
+
+		public void SetValue(string name, ITexture t)
+		{
+			var texture = (Texture)t;
+			var param = Tao.Cg.Cg.cgGetNamedEffectParameter(effect, name);
+			if (param != IntPtr.Zero && texture != null)
+				Tao.Cg.CgGl.cgGLSetupSampler(param, texture.texture);
+		}
+
+		public void SetValue(string name, float x, float y)
+		{
+			var param = Tao.Cg.Cg.cgGetNamedEffectParameter(effect, name);
+			if (param != IntPtr.Zero)
+				Tao.Cg.CgGl.cgGLSetParameter2f(param, x, y);
+		}
+
+		public void Commit() { }
+	}
+}