split renderer into a file per class

2010-07-16 18:22:19 +12:00
parent d821dd011f
commit 4c8f85b36b
6 changed files with 324 additions and 232 deletions
--- a/OpenRA.Gl/Shader.cs
+++ b/OpenRA.Gl/Shader.cs
@@ -0,0 +1,96 @@
+#region Copyright & License Information
+/*
+ * Copyright 2007,2009,2010 Chris Forbes, Robert Pepperell, Matthew Bowra-Dean, Paul Chote, Alli Witheford.
+ * This file is part of OpenRA.
+ * 
+ *  OpenRA is free software: you can redistribute it and/or modify
+ *  it under the terms of the GNU General Public License as published by
+ *  the Free Software Foundation, either version 3 of the License, or
+ *  (at your option) any later version.
+ * 
+ *  OpenRA is distributed in the hope that it will be useful,
+ *  but WITHOUT ANY WARRANTY; without even the implied warranty of
+ *  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ *  GNU General Public License for more details.
+ * 
+ *  You should have received a copy of the GNU General Public License
+ *  along with OpenRA.  If not, see <http://www.gnu.org/licenses/>.
+ */
+#endregion
+
+using System;
+using System.IO;
+using OpenRA.FileFormats.Graphics;
+using Tao.Cg;
+
+namespace OpenRA.GlRenderer
+{
+	public class Shader : IShader
+	{
+		IntPtr effect;
+		IntPtr technique;
+		GraphicsDevice dev;
+
+		public Shader(GraphicsDevice dev, Stream s)
+		{
+			this.dev = dev;
+			string code;
+			using (var file = new StreamReader(s))
+				code = file.ReadToEnd();
+			effect = Cg.cgCreateEffect(dev.cgContext, code, null);
+
+			if (effect == IntPtr.Zero)
+			{
+				var err = Cg.cgGetErrorString(Cg.cgGetError());
+				var results = Cg.cgGetLastListing(dev.cgContext);
+				throw new InvalidOperationException(
+					string.Format("Cg compile failed ({0}):\n{1}", err, results));
+			}
+
+			technique = Cg.cgGetFirstTechnique(effect);
+			if (technique == IntPtr.Zero)
+				throw new InvalidOperationException("No techniques");
+			while (Cg.cgValidateTechnique(technique) == 0)
+			{
+				technique = Cg.cgGetNextTechnique(technique);
+				if (technique == IntPtr.Zero)
+					throw new InvalidOperationException("No valid techniques");
+			}
+		}
+
+		public void Render(Action a)
+		{
+			CgGl.cgGLEnableProfile(dev.vertexProfile);
+			CgGl.cgGLEnableProfile(dev.fragmentProfile);
+
+			var pass = Cg.cgGetFirstPass(technique);
+			while (pass != IntPtr.Zero)
+			{
+				Cg.cgSetPassState(pass);
+				a();
+				Cg.cgResetPassState(pass);
+				pass = Cg.cgGetNextPass(pass);
+			}
+
+			CgGl.cgGLDisableProfile(dev.fragmentProfile);
+			CgGl.cgGLDisableProfile(dev.vertexProfile);
+		}
+
+		public void SetValue(string name, ITexture t)
+		{
+			var texture = (Texture)t;
+			var param = Cg.cgGetNamedEffectParameter(effect, name);
+			if (param != IntPtr.Zero && texture != null)
+				CgGl.cgGLSetupSampler(param, texture.texture);
+		}
+
+		public void SetValue(string name, float x, float y)
+		{
+			var param = Cg.cgGetNamedEffectParameter(effect, name);
+			if (param != IntPtr.Zero)
+				CgGl.cgGLSetParameter2f(param, x, y);
+		}
+
+		public void Commit() { }
+	}
+}