772d4be8d3
- OpenGL Device is now Reset correctly when for example the window size changes (Recreating all resources) - OpenGL render system doesn't crash anymore when closing the application - Introduced TestStateAttribute for development to mark a file as tested/untested
370 lines
12 KiB
C#
370 lines
12 KiB
C#
using System;
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using System.Collections.Generic;
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using System.IO;
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using ANX.Framework.Graphics;
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using ANX.Framework.NonXNA;
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using ANX.Framework.Windows.GL3.Helpers;
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using OpenTK.Graphics.OpenGL;
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#region License
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//
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// This file is part of the ANX.Framework created by the "ANX.Framework developer group".
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//
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// This file is released under the Ms-PL license.
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//
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//
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//
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// Microsoft Public License (Ms-PL)
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//
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// This license governs use of the accompanying software. If you use the software, you accept this license.
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// If you do not accept the license, do not use the software.
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//
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// 1.Definitions
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// The terms "reproduce," "reproduction," "derivative works," and "distribution" have the same meaning
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// here as under U.S. copyright law.
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// A "contribution" is the original software, or any additions or changes to the software.
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// A "contributor" is any person that distributes its contribution under this license.
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// "Licensed patents" are a contributor's patent claims that read directly on its contribution.
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//
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// 2.Grant of Rights
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// (A) Copyright Grant- Subject to the terms of this license, including the license conditions and limitations
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// in section 3, each contributor grants you a non-exclusive, worldwide, royalty-free copyright license to
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// reproduce its contribution, prepare derivative works of its contribution, and distribute its contribution
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// or any derivative works that you create.
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// (B) Patent Grant- Subject to the terms of this license, including the license conditions and limitations in
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// section 3, each contributor grants you a non-exclusive, worldwide, royalty-free license under its licensed
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// patents to make, have made, use, sell, offer for sale, import, and/or otherwise dispose of its contribution
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// in the software or derivative works of the contribution in the software.
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//
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// 3.Conditions and Limitations
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// (A) No Trademark License- This license does not grant you rights to use any contributors' name, logo, or trademarks.
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// (B) If you bring a patent claim against any contributor over patents that you claim are infringed by the software, your
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// patent license from such contributor to the software ends automatically.
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// (C) If you distribute any portion of the software, you must retain all copyright, patent, trademark, and attribution
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// notices that are present in the software.
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// (D) If you distribute any portion of the software in source code form, you may do so only under this license by including
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// a complete copy of this license with your distribution. If you distribute any portion of the software in compiled or
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// object code form, you may only do so under a license that complies with this license.
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// (E) The software is licensed "as-is." You bear the risk of using it. The contributors give no express warranties, guarantees,
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// or conditions. You may have additional consumer rights under your local laws which this license cannot change. To the
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// extent permitted under your local laws, the contributors exclude the implied warranties of merchantability, fitness for a
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// particular purpose and non-infringement.
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#endregion // License
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namespace ANX.Framework.Windows.GL3
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{
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/// <summary>
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/// Native OpenGL Effect implementation.
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///
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/// http://wiki.delphigl.com/index.php/Tutorial_glsl
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/// </summary>
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public class EffectGL3 : INativeEffect
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{
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#region Private
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/// <summary>
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/// The managed effect instance of this shader.
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/// </summary>
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private Effect managedEffect;
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/// <summary>
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/// The loaded shader data from the shader file.
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/// </summary>
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private ShaderData shaderData;
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/// <summary>
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/// The available techniques of this shader.
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/// </summary>
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private List<EffectTechnique> techniques;
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/// <summary>
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/// The current native technique.
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/// </summary>
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internal EffectTechniqueGL3 CurrentTechnique
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{
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get
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{
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if (managedEffect.CurrentTechnique == null)
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{
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return null;
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}
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return managedEffect.CurrentTechnique.NativeTechnique as EffectTechniqueGL3;
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}
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}
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/// <summary>
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/// The active uniforms of this technique.
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/// </summary>
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internal List<EffectParameter> parameters;
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internal bool IsDisposed;
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#endregion
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#region Public
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#region Techniques
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public IEnumerable<EffectTechnique> Techniques
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{
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get
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{
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if (techniques.Count == 0)
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{
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Compile();
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}
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return techniques;
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}
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}
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#endregion
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#region Parameters
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public IEnumerable<EffectParameter> Parameters
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{
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get
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{
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if (techniques.Count == 0)
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{
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Compile();
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}
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return parameters;
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}
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}
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#endregion
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#endregion
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#region Constructor
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/// <summary>
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/// Private helper constructor for the basic initialization.
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/// </summary>
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/// <param name="setManagedEffect"></param>
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private EffectGL3(Effect setManagedEffect)
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{
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GraphicsResourceManager.UpdateResource(this, true);
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parameters = new List<EffectParameter>();
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techniques = new List<EffectTechnique>();
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managedEffect = setManagedEffect;
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}
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~EffectGL3()
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{
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GraphicsResourceManager.UpdateResource(this, false);
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}
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/// <summary>
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/// Create a new effect instance of separate streams.
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/// </summary>
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/// <param name="vertexShaderByteCode">The vertex shader code.</param>
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/// <param name="pixelShaderByteCode">The fragment shader code.</param>
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public EffectGL3(Effect setManagedEffect, Stream vertexShaderByteCode,
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Stream pixelShaderByteCode)
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: this(setManagedEffect)
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{
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// TODO: this is probably not right!
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throw new NotImplementedException("TODO: implement effect constructor with vertex and fragment streams, check HOWTO...");
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//CreateShader(ShaderHelper.LoadShaderCode(vertexShaderByteCode),
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// ShaderHelper.LoadShaderCode(pixelShaderByteCode));
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}
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/// <summary>
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/// Create a new effect instance of one streams.
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/// </summary>
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/// <param name="byteCode">The byte code of the shader.</param>
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public EffectGL3(Effect setManagedEffect, Stream byteCode)
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: this(setManagedEffect)
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{
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string source = ShaderHelper.LoadShaderCode(byteCode);
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shaderData = ShaderHelper.ParseShaderCode(source);
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}
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#endregion
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#region RecreateData
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internal void RecreateData()
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{
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Compile();
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}
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#endregion
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#region Compile
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private void Compile()
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{
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parameters.Clear();
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techniques.Clear();
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Dictionary<string, int> vertexShaders = new Dictionary<string, int>();
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Dictionary<string, int> fragmentShaders = new Dictionary<string, int>();
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List<string> parameterNames = new List<string>();
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#region Compile vertex shaders
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foreach (string vertexName in shaderData.VertexShaderCodes.Keys)
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{
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string vertexSource = shaderData.VertexGlobalCode +
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shaderData.VertexShaderCodes[vertexName];
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int vertexShader = GL.CreateShader(ShaderType.VertexShader);
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string vertexError = CompileShader(vertexShader, vertexSource);
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if (String.IsNullOrEmpty(vertexError) == false)
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{
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throw new InvalidDataException("Failed to compile the vertex " +
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"shader '" + vertexName + "' because of: " + vertexError);
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}
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vertexShaders.Add(vertexName, vertexShader);
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}
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#endregion
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#region Compile fragment shaders
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foreach (string fragmentName in shaderData.FragmentShaderCodes.Keys)
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{
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string fragmentSource = shaderData.FragmentGlobalCode +
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shaderData.FragmentShaderCodes[fragmentName];
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int fragmentShader = GL.CreateShader(ShaderType.FragmentShader);
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string vertexError = CompileShader(fragmentShader, fragmentSource);
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if (String.IsNullOrEmpty(vertexError) == false)
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{
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throw new InvalidDataException("Failed to compile the fragment " +
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"shader '" + fragmentName + "' because of: " + vertexError);
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}
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fragmentShaders.Add(fragmentName, fragmentShader);
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}
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#endregion
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#region Compile programs
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foreach (string programName in shaderData.Techniques.Keys)
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{
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string vertexName = shaderData.Techniques[programName].Key;
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string fragmentName = shaderData.Techniques[programName].Value;
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int programHandle = GL.CreateProgram();
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ErrorHelper.Check("CreateProgram");
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GL.AttachShader(programHandle, vertexShaders[vertexName]);
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ErrorHelper.Check("AttachShader vertexShader");
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GL.AttachShader(programHandle, fragmentShaders[fragmentName]);
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ErrorHelper.Check("AttachShader fragmentShader");
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GL.LinkProgram(programHandle);
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int result;
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GL.GetProgram(programHandle, ProgramParameter.LinkStatus, out result);
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if (result == 0)
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{
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string programError;
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GL.GetProgramInfoLog(programHandle, out programError);
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throw new InvalidDataException("Failed to link the shader program '" +
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programName + "' because of: " + programError);
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}
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EffectTechniqueGL3 technique = new EffectTechniqueGL3(managedEffect, programName,
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programHandle);
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techniques.Add(new EffectTechnique(managedEffect, technique));
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int uniformCount;
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GL.GetProgram(programHandle, ProgramParameter.ActiveUniforms,
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out uniformCount);
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ErrorHelper.Check("GetProgram ActiveUniforms");
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for (int index = 0; index < uniformCount; index++)
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{
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string name = GL.GetActiveUniformName(programHandle, index);
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ErrorHelper.Check("GetActiveUniformName name=" + name);
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if (parameterNames.Contains(name) == false)
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{
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parameterNames.Add(name);
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int uniformIndex = GL.GetUniformLocation(programHandle, name);
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ErrorHelper.Check("GetUniformLocation name=" + name +
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" uniformIndex=" + uniformIndex);
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parameters.Add(new EffectParameter()
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{
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NativeParameter =
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new EffectParameterGL3(technique, name, uniformIndex),
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});
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}
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}
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}
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#endregion
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}
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#endregion
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#region CompileShader
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private string CompileShader(int shader, string source)
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{
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GL.ShaderSource(shader, source);
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GL.CompileShader(shader);
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int result;
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GL.GetShader(shader, ShaderParameter.CompileStatus, out result);
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if (result == 0)
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{
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string error = "";
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GL.GetShaderInfoLog(shader, out error);
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GL.DeleteShader(shader);
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return error;
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}
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return null;
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}
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#endregion
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#region Apply (TODO)
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public void Apply(GraphicsDevice graphicsDevice)
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{
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if (GraphicsDeviceWindowsGL3.activeEffect != this)
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{
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GL.Enable(EnableCap.Blend);
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GL.UseProgram(CurrentTechnique.programHandle);
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GraphicsDeviceWindowsGL3.activeEffect = this;
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ErrorHelper.Check("UseProgram");
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}
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}
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#endregion
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#region Dispose
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/// <summary>
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/// Dispose the native shader data.
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/// </summary>
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public void Dispose()
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{
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if (IsDisposed == false)
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{
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IsDisposed = true;
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DisposeResource();
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}
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}
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internal void DisposeResource()
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{
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if (GraphicsDeviceWindowsGL3.IsContextCurrent == false)
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{
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return;
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}
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foreach (EffectTechnique technique in techniques)
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{
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int programHandle =
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(technique.NativeTechnique as EffectTechniqueGL3).programHandle;
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GL.DeleteProgram(programHandle);
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ErrorHelper.Check("DeleteProgram");
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int result;
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GL.GetProgram(programHandle, ProgramParameter.DeleteStatus, out result);
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if (result == 0)
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{
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string deleteError;
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GL.GetProgramInfoLog(programHandle, out deleteError);
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throw new Exception("Failed to delete the shader program '" +
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technique.Name + "' because of: " + deleteError);
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}
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}
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techniques.Clear();
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parameters.Clear();
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}
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#endregion
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}
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}
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