Remove legacy renderers.

2014-05-02 18:47:49 +12:00
parent 189f23e442
commit 03c3c3ae9b
37 changed files with 188 additions and 2675 deletions
--- a/OpenRA.Renderer.Sdl2/Shader.cs
+++ b/OpenRA.Renderer.Sdl2/Shader.cs
@@ -0,0 +1,186 @@
+#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;
+using System.Collections.Generic;
+using System.IO;
+using System.Text;
+using OpenRA.FileSystem;
+using OpenRA.Graphics;
+using Tao.OpenGl;
+
+namespace OpenRA.Renderer.Sdl2
+{
+	public class Shader : IShader
+	{
+		readonly Dictionary<string, int> samplers = new Dictionary<string, int>();
+		readonly Dictionary<int, ITexture> textures = new Dictionary<int, ITexture>();
+		int program;
+
+		public Shader(string name)
+		{
+			// Vertex shader
+			string vertexCode;
+			using (var file = new StreamReader(GlobalFileSystem.Open("glsl{0}{1}.vert".F(Path.DirectorySeparatorChar, name))))
+				vertexCode = file.ReadToEnd();
+
+			var v = Gl.glCreateShaderObjectARB(Gl.GL_VERTEX_SHADER_ARB);
+			ErrorHandler.CheckGlError();
+			Gl.glShaderSourceARB(v, 1, new string[] { vertexCode }, null);
+			ErrorHandler.CheckGlError();
+			Gl.glCompileShaderARB(v);
+			ErrorHandler.CheckGlError();
+
+			int success;
+			Gl.glGetObjectParameterivARB(v, Gl.GL_OBJECT_COMPILE_STATUS_ARB, out success);
+			ErrorHandler.CheckGlError();
+			if (success == 0)
+				throw new InvalidProgramException("Compile error in {0}{1}.vert".F(Path.DirectorySeparatorChar, name));
+
+			// Fragment shader
+			string fragmentCode;
+			using (var file = new StreamReader(GlobalFileSystem.Open("glsl{0}{1}.frag".F(Path.DirectorySeparatorChar, name))))
+				fragmentCode = file.ReadToEnd();
+
+			var f = Gl.glCreateShaderObjectARB(Gl.GL_FRAGMENT_SHADER_ARB);
+			ErrorHandler.CheckGlError();
+			Gl.glShaderSourceARB(f, 1, new string[] { fragmentCode }, null);
+			ErrorHandler.CheckGlError();
+			Gl.glCompileShaderARB(f);
+			ErrorHandler.CheckGlError();
+
+			Gl.glGetObjectParameterivARB(f, Gl.GL_OBJECT_COMPILE_STATUS_ARB, out success);
+			ErrorHandler.CheckGlError();
+			if (success == 0)
+				throw new InvalidProgramException("Compile error in glsl{0}{1}.frag".F(Path.DirectorySeparatorChar, name));
+
+			// Assemble program
+			program = Gl.glCreateProgramObjectARB();
+			ErrorHandler.CheckGlError();
+			Gl.glAttachObjectARB(program, v);
+			ErrorHandler.CheckGlError();
+			Gl.glAttachObjectARB(program, f);
+			ErrorHandler.CheckGlError();
+
+			Gl.glLinkProgramARB(program);
+			ErrorHandler.CheckGlError();
+
+			Gl.glGetObjectParameterivARB(program, Gl.GL_OBJECT_LINK_STATUS_ARB, out success);
+			ErrorHandler.CheckGlError();
+			if (success == 0)
+				throw new InvalidProgramException("Linking error in {0} shader".F(name));
+
+			Gl.glUseProgramObjectARB(program);
+			ErrorHandler.CheckGlError();
+
+			int numUniforms;
+			Gl.glGetObjectParameterivARB(program, Gl.GL_ACTIVE_UNIFORMS, out numUniforms);
+			ErrorHandler.CheckGlError();
+
+			int nextTexUnit = 0;
+			for (var i = 0; i < numUniforms; i++)
+			{
+				int length, size, type;
+				var sb = new StringBuilder(128);
+
+				Gl.glGetActiveUniformARB(program, i, 128, out length, out size, out type, sb);
+				var sampler = sb.ToString();
+				ErrorHandler.CheckGlError();
+
+				if (type == Gl.GL_SAMPLER_2D_ARB)
+				{
+					samplers.Add(sampler, nextTexUnit);
+
+					var loc = Gl.glGetUniformLocationARB(program, sampler);
+					ErrorHandler.CheckGlError();
+					Gl.glUniform1iARB(loc, nextTexUnit);
+					ErrorHandler.CheckGlError();
+
+					nextTexUnit++;
+				}
+			}
+		}
+
+		public void Render(Action a)
+		{
+			Gl.glUseProgramObjectARB(program);
+
+			// bind the textures
+			foreach (var kv in textures)
+			{
+				Gl.glActiveTextureARB(Gl.GL_TEXTURE0_ARB + kv.Key);
+				Gl.glBindTexture(Gl.GL_TEXTURE_2D, ((Texture)kv.Value).ID);
+			}
+
+			ErrorHandler.CheckGlError();
+			a();
+			ErrorHandler.CheckGlError();
+		}
+
+		public void SetTexture(string name, ITexture t)
+		{
+			if (t == null)
+				return;
+
+			int texUnit;
+			if (samplers.TryGetValue(name, out texUnit))
+				textures[texUnit] = t;
+		}
+
+		public void SetVec(string name, float x)
+		{
+			Gl.glUseProgramObjectARB(program);
+			ErrorHandler.CheckGlError();
+			var param = Gl.glGetUniformLocationARB(program, name);
+			ErrorHandler.CheckGlError();
+			Gl.glUniform1fARB(param, x);
+			ErrorHandler.CheckGlError();
+		}
+
+		public void SetVec(string name, float x, float y)
+		{
+			Gl.glUseProgramObjectARB(program);
+			ErrorHandler.CheckGlError();
+			var param = Gl.glGetUniformLocationARB(program, name);
+			ErrorHandler.CheckGlError();
+			Gl.glUniform2fARB(param, x, y);
+			ErrorHandler.CheckGlError();
+		}
+
+		public void SetVec(string name, float[] vec, int length)
+		{
+			var param = Gl.glGetUniformLocationARB(program, name);
+			ErrorHandler.CheckGlError();
+			switch (length)
+			{
+				case 1: Gl.glUniform1fv(param, 1, vec); break;
+				case 2: Gl.glUniform2fv(param, 1, vec); break;
+				case 3: Gl.glUniform3fv(param, 1, vec); break;
+				case 4: Gl.glUniform4fv(param, 1, vec); break;
+				default: throw new InvalidDataException("Invalid vector length");
+			}
+
+			ErrorHandler.CheckGlError();
+		}
+
+		public void SetMatrix(string name, float[] mtx)
+		{
+			if (mtx.Length != 16)
+				throw new InvalidDataException("Invalid 4x4 matrix");
+
+			Gl.glUseProgramObjectARB(program);
+			ErrorHandler.CheckGlError();
+			var param = Gl.glGetUniformLocationARB(program, name);
+			ErrorHandler.CheckGlError();
+			Gl.glUniformMatrix4fv(param, 1, Gl.GL_FALSE, mtx);
+			ErrorHandler.CheckGlError();
+		}
+	}
+}