mirror of
https://github.com/Ryujinx/Opentk.git
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885 lines
30 KiB
C#
885 lines
30 KiB
C#
#region --- License ---
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/* Copyright (c) 2006, 2007 Stefanos Apostolopoulos
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* See license.txt for license info
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*/
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#endregion
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using System;
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using System.Collections.Generic;
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using System.Text;
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using System.Runtime.InteropServices;
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using System.Diagnostics;
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using System.IO;
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namespace Bind.Structures
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{
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/// <summary>
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/// Represents an opengl function.
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/// The return value, function name, function parameters and opengl version can be retrieved or set.
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/// </summary>
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public class Delegate
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{
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internal static DelegateCollection Delegates;
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private static bool delegatesLoaded;
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#region internal static void Initialize(string glSpec, string glSpecExt)
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internal static void Initialize(string glSpec, string glSpecExt)
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{
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if (!delegatesLoaded)
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{
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using (StreamReader sr = Utilities.OpenSpecFile(Settings.InputPath, glSpec))
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{
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Delegates = Bind.MainClass.Generator.ReadDelegates(sr);
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}
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if (!String.IsNullOrEmpty(glSpecExt))
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{
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using (StreamReader sr = Utilities.OpenSpecFile(Settings.InputPath, glSpecExt))
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{
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foreach (Delegate d in Bind.MainClass.Generator.ReadDelegates(sr).Values)
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{
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Utilities.Merge(Delegates, d);
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}
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}
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}
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delegatesLoaded = true;
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}
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}
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#endregion
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#region --- Constructors ---
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public Delegate()
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{
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Parameters = new ParameterCollection();
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}
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public Delegate(Delegate d)
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{
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this.Category = d.Category;
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this.Name = d.Name;
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this.Parameters = new ParameterCollection(d.Parameters);
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this.ReturnType = new Type(d.ReturnType);
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this.Version = d.Version;
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//this.Version = !String.IsNullOrEmpty(d.Version) ? new string(d.Version.ToCharArray()) : "";
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}
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#endregion
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#region --- Properties ---
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#region public bool CLSCompliant
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/// <summary>
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/// Gets the CLSCompliant property. True if the delegate is not CLSCompliant.
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/// </summary>
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public bool CLSCompliant
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{
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get
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{
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if (Unsafe)
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return false;
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if (!ReturnType.CLSCompliant)
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return false;
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foreach (Parameter p in Parameters)
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{
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if (!p.CLSCompliant)
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return false;
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}
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return true;
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}
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}
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#endregion
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#region public string Category
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private string _category;
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public string Category
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{
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get { return _category; }
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set { _category = value; }
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}
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#endregion
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#region public bool NeedsWrapper
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/// <summary>
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/// Indicates whether this function needs to be wrapped with a Marshaling function.
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/// This flag is set if a function contains an Array parameter, or returns
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/// an Array or string.
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/// </summary>
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public bool NeedsWrapper
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{
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//get { return _needs_wrapper; }
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//set { _needs_wrapper = value; }
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get
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{
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// TODO: Add special cases for (Get)ShaderSource.
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if (ReturnType.WrapperType != WrapperTypes.None)
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return true;
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foreach (Parameter p in Parameters)
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{
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if (p.WrapperType != WrapperTypes.None)
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return true;
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}
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return false;
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}
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}
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#endregion
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#region public virtual bool Unsafe
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/// <summary>
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/// True if the delegate must be declared as 'unsafe'.
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/// </summary>
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public virtual bool Unsafe
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{
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//get { return @unsafe; }
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//set { @unsafe = value; }
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get
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{
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if (ReturnType.Pointer)
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return true;
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foreach (Parameter p in Parameters)
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{
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if (p.Pointer)
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{
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return true;
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}
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}
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return false;
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}
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}
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#endregion
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#region public Parameter ReturnType
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Type _return_type = new Type();
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/// <summary>
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/// Gets or sets the return value of the opengl function.
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/// </summary>
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public Type ReturnType
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{
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get { return _return_type; }
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set
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{
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_return_type = Type.Translate(value);
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}
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}
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#endregion
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#region public virtual string Name
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string _name;
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/// <summary>
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/// Gets or sets the name of the opengl function.
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/// </summary>
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public virtual string Name
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{
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get { return _name; }
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set
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{
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if (!String.IsNullOrEmpty(value))
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{
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_name = value.Trim();
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}
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}
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}
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#endregion
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#region public ParameterCollection Parameters
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ParameterCollection _parameters;
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public ParameterCollection Parameters
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{
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get { return _parameters; }
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protected set { _parameters = value; }
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}
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#endregion
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#region public string Version
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string _version;
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/// <summary>
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/// Defines the opengl version that introduced this function.
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/// </summary>
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public string Version
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{
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get { return _version; }
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set { _version = value; }
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}
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#endregion
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#region public bool Extension
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string _extension;
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public string Extension
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{
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//get { return _extension; }
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//set { _extension = value; }
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get
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{
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if (!String.IsNullOrEmpty(Name))
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{
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_extension = Utilities.GetGL2Extension(Name);
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return String.IsNullOrEmpty(_extension) ? "Core" : _extension;
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}
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else
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{
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return null;
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}
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}
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}
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#endregion
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#endregion
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#region --- Strings ---
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#region public string CallString()
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public string CallString()
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{
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StringBuilder sb = new StringBuilder();
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sb.Append(Settings.DelegatesClass);
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sb.Append(".");
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sb.Append(Settings.FunctionPrefix);
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sb.Append(Name);
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sb.Append(Parameters.CallString());
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return sb.ToString();
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}
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#endregion
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#region public string DeclarationString()
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public string DeclarationString()
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{
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StringBuilder sb = new StringBuilder();
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sb.Append(Unsafe ? "unsafe " : "");
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sb.Append(ReturnType);
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sb.Append(" ");
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sb.Append(Name);
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sb.Append(Parameters.ToString());
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return sb.ToString();
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}
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#endregion
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#region override public string ToString()
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/// <summary>
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/// Gets the string representing the full function declaration without decorations
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/// (ie "void glClearColor(float red, float green, float blue, float alpha)"
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/// </summary>
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override public string ToString()
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{
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StringBuilder sb = new StringBuilder();
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sb.Append(Unsafe ? "unsafe " : "");
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sb.Append("delegate ");
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sb.Append(ReturnType);
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sb.Append(" ");
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sb.Append(Name);
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sb.Append(Parameters.ToString());
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return sb.ToString();
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}
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#endregion
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public Delegate GetCLSCompliantDelegate()
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{
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Delegate f = new Delegate(this);
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for (int i = 0; i < f.Parameters.Count; i++)
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{
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f.Parameters[i].CurrentType = f.Parameters[i].GetCLSCompliantType();
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}
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f.ReturnType.CurrentType = f.ReturnType.GetCLSCompliantType();
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return f;
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}
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#endregion
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#region --- Wrapper Creation ---
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#region public IEnumerable<Function> CreateWrappers()
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public void CreateWrappers()
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{
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if (this.Name.Contains("EndList"))
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{
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}
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List<Function> wrappers = new List<Function>();
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if (!NeedsWrapper)
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{
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// No special wrapper needed - just call this delegate:
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Function f = new Function(this);
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if (f.ReturnType.CurrentType.ToLower().Contains("void"))
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f.Body.Add(String.Format("{0};", f.CallString()));
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else
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f.Body.Add(String.Format("return {0};", f.CallString()));
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wrappers.Add(f);
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}
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else
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{
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Function f = WrapReturnType();
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WrapParameters(new Function((Function)f ?? this), wrappers);
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}
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// If the function is not CLS-compliant (e.g. it contains unsigned parameters)
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// we need to create a CLS-Compliant overload. However, we should only do this
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// iff the opengl function does not contain unsigned/signed overloads itself
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// to avoid redefinitions.
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foreach (Function f in wrappers)
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{
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Bind.Structures.Function.Wrappers.AddChecked(f);
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//Bind.Structures.Function.Wrappers.Add(f);
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if (!f.CLSCompliant)
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{
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Function cls = new Function(f);
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cls.Body.Clear();
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if (!cls.NeedsWrapper)
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{
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cls.Body.Add((f.ReturnType.CurrentType != "void" ? "return " + this.CallString() : this.CallString()) + ";");
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}
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else
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{
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cls.Body.AddRange(this.CreateBody(cls, true));
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}
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bool somethingChanged = false;
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for (int i = 0; i < f.Parameters.Count; i++)
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{
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cls.Parameters[i].CurrentType = cls.Parameters[i].GetCLSCompliantType();
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if (cls.Parameters[i].CurrentType != f.Parameters[i].CurrentType)
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somethingChanged = true;
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}
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if (somethingChanged)
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Bind.Structures.Function.Wrappers.AddChecked(cls);
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}
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}
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}
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#endregion
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#region protected Function WrapReturnType()
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protected Function WrapReturnType()
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{
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// We have to add wrappers for all possible WrapperTypes.
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Function f;
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// First, check if the return type needs wrapping:
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switch (this.ReturnType.WrapperType)
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{
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// If the function returns a string (glGetString) we must manually marshal it
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// using Marshal.PtrToStringXXX. Otherwise, the GC will try to free the memory
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// used by the string, resulting in corruption (the memory belongs to the
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// unmanaged boundary).
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case WrapperTypes.StringReturnType:
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f = new Function(this);
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f.ReturnType.CurrentType = "System.String";
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f.Body.Add(
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String.Format(
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"return System.Runtime.InteropServices.Marshal.PtrToStringAnsi({0});",
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this.CallString()
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)
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);
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return f; // Only occurs in glGetString, there's no need to check parameters.
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// If the function returns a void* (GenericReturnValue), we'll have to return an IntPtr.
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// The user will unfortunately need to marshal this IntPtr to a data type manually.
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case WrapperTypes.GenericReturnType:
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ReturnType.CurrentType = "IntPtr";
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ReturnType.Pointer = false;
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break;
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case WrapperTypes.None:
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default:
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// No return wrapper needed
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break;
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}
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return null;
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}
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#endregion
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#region protected void WrapParameters(Function function, List<Function> wrappers)
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protected static int index;
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/// <summary>
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/// This function needs some heavy refactoring. I'm ashamed I ever wrote it, but it works...
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/// What it does is this: it adds to the wrapper list all possible wrapper permutations
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/// for functions that have more than one IntPtr parameter. Example:
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/// "void Delegates.f(IntPtr p, IntPtr q)" where p and q are pointers to void arrays needs the following wrappers:
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/// "void f(IntPtr p, IntPtr q)"
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/// "void f(IntPtr p, object q)"
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/// "void f(object p, IntPtr q)"
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/// "void f(object p, object q)"
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/// </summary>
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protected void WrapParameters(Function function, List<Function> wrappers)
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{
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if (index == 0)
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{
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if (function.Parameters.HasPointerParameters)
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{
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wrappers.Add(DefaultWrapper(function));
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}
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//else if (containsReferenceParameters)
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//{
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//}
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else
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{
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if (function.Body.Count == 0)
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wrappers.Add(DefaultWrapper(function));
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else
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wrappers.Add(function);
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return;
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}
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}
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if (index >= 0 && index < function.Parameters.Count)
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{
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Function f;
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if (function.Parameters[index].WrapperType == WrapperTypes.None)
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{
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// No wrapper needed, visit the next parameter
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++index;
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WrapParameters(function, wrappers);
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--index;
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}
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else
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{
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switch (function.Parameters[index].WrapperType)
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{
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case WrapperTypes.ArrayParameter:
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// Recurse to the last parameter
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++index;
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WrapParameters(function, wrappers);
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--index;
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//if (function.Name == "UseFontOutlinesA")
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{
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}
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// On stack rewind, create array wrappers
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f = new Function(function);
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f.Parameters[index].Reference = false;
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f.Parameters[index].Array = 1;
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f.Parameters[index].Pointer = false;
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f.Body = CreateBody(f, false);
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//f = ReferenceWrapper(new Function(function), index);
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wrappers.Add(f);
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// Recurse to the last parameter again, keeping the Array wrappers
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++index;
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WrapParameters(f, wrappers);
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--index;
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f = new Function(function);
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f.Parameters[index].Reference = true;
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f.Parameters[index].Array = 0;
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f.Parameters[index].Pointer = false;
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f.Body = CreateBody(f, false);
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//f = ReferenceWrapper(new Function(function), index);
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wrappers.Add(f);
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// Keeping the current Ref wrapper, visit all other parameters once more
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++index;
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WrapParameters(f, wrappers);
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--index;
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break;
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case WrapperTypes.GenericParameter:
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// Recurse to the last parameter
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++index;
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WrapParameters(function, wrappers);
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--index;
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// On stack rewind, create array wrappers
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f = new Function(function);
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f.Parameters[index].Reference = false;
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f.Parameters[index].Array = 0;
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f.Parameters[index].Pointer = false;
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f.Parameters[index].CurrentType = "object";
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f.Parameters[index].Flow = Parameter.FlowDirection.Undefined;
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f.Body = CreateBody(f, false);
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wrappers.Add(f);
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// Keeping the current Object wrapper, visit all other parameters once more
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++index;
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WrapParameters(f, wrappers);
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--index;
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break;
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case WrapperTypes.ReferenceParameter:
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// Recurse to the last parameter
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++index;
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WrapParameters(function, wrappers);
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--index;
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// On stack rewind, create reference wrappers
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f = new Function(function);
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f.Parameters[index].Reference = true;
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f.Parameters[index].Array = 0;
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f.Parameters[index].Pointer = false;
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f.Body = CreateBody(f, false);
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//f = ReferenceWrapper(new Function(function), index);
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wrappers.Add(f);
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// Keeping the current Object wrapper, visit all other parameters once more
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++index;
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WrapParameters(f, wrappers);
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--index;
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break;
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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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#region protected Function DefaultWrapper(Function f)
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protected Function DefaultWrapper(Function f)
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{
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bool returns = f.ReturnType.CurrentType.ToLower().Contains("void") && !f.ReturnType.Pointer;
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string callString = String.Format(
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"{0} {1}{2}; {3}",
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Unsafe ? "unsafe {" : "",
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returns ? "" : "return ",
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this.CallString(),
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Unsafe ? "}" : "");
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f.Body.Add(callString);
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return f;
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}
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#endregion
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#region protected FunctionBody CreateBody(Function fun, bool wantCLSCompliance)
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static List<string> handle_statements = new List<string>();
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static List<string> handle_release_statements = new List<string>();
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static List<string> fixed_statements = new List<string>();
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static List<string> assign_statements = new List<string>();
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protected FunctionBody CreateBody(Function fun, bool wantCLSCompliance)
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{
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Function f = new Function(fun);
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f.Body.Clear();
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handle_statements.Clear();
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handle_release_statements.Clear();
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fixed_statements.Clear();
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assign_statements.Clear();
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//if (f.Name == "LoadDisplayColorTableEXT")
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{
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}
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|
|
// Obtain pointers by pinning the parameters
|
|
foreach (Parameter p in f.Parameters)
|
|
{
|
|
if (p.NeedsPin)
|
|
{
|
|
if (p.WrapperType == WrapperTypes.GenericParameter)
|
|
{
|
|
// Use GCHandle to obtain pointer to generic parameters and 'fixed' for arrays.
|
|
// This is because fixed can only take the address of fields, not managed objects.
|
|
handle_statements.Add(String.Format(
|
|
"{0} {1}_ptr = {0}.Alloc({1}, System.Runtime.InteropServices.GCHandleType.Pinned);",
|
|
"System.Runtime.InteropServices.GCHandle", p.Name));
|
|
|
|
handle_release_statements.Add(String.Format("{0}_ptr.Free();", p.Name));
|
|
|
|
if (p.Flow == Parameter.FlowDirection.Out)
|
|
{
|
|
assign_statements.Add(String.Format(
|
|
" {0} = ({1}){0}_ptr.Target;",
|
|
p.Name, p.CurrentType));
|
|
}
|
|
|
|
// Note! The following line modifies f.Parameters, *not* this.Parameters
|
|
p.Name = "(void*)" + p.Name + "_ptr.AddrOfPinnedObject()";
|
|
}
|
|
else if (p.WrapperType == WrapperTypes.PointerParameter ||
|
|
p.WrapperType == WrapperTypes.ArrayParameter ||
|
|
p.WrapperType == WrapperTypes.ReferenceParameter)
|
|
{
|
|
// A fixed statement is issued for all non-generic pointers, arrays and references.
|
|
fixed_statements.Add(String.Format(
|
|
"fixed ({0}* {1} = {2})",
|
|
wantCLSCompliance && !p.CLSCompliant ? p.GetCLSCompliantType() : p.CurrentType,
|
|
p.Name + "_ptr",
|
|
p.Array > 0 ? p.Name : "&" + p.Name));
|
|
|
|
if (p.Flow == Parameter.FlowDirection.Out && p.Array == 0) // Fixed Arrays of blittable types don't need explicit assignment.
|
|
{
|
|
assign_statements.Add(String.Format(" {0} = *{0}_ptr;", p.Name));
|
|
}
|
|
|
|
p.Name = p.Name + "_ptr";
|
|
}
|
|
else
|
|
{
|
|
throw new ApplicationException("Unknown parameter type");
|
|
}
|
|
}
|
|
}
|
|
|
|
//if (!f.Unsafe && (fixed_statements.Count > 0 || fixed_statements.Count > 0))
|
|
{
|
|
f.Body.Add("unsafe");
|
|
f.Body.Add("{");
|
|
f.Body.Indent();
|
|
}
|
|
|
|
if (fixed_statements.Count > 0)
|
|
{
|
|
f.Body.AddRange(fixed_statements);
|
|
f.Body.Add("{");
|
|
f.Body.Indent();
|
|
}
|
|
|
|
if (handle_statements.Count > 0)
|
|
{
|
|
f.Body.AddRange(handle_statements);
|
|
f.Body.Add("try");
|
|
f.Body.Add("{");
|
|
f.Body.Indent();
|
|
}
|
|
|
|
if (f.ReturnType.CurrentType.ToLower().Contains("void"))
|
|
{
|
|
f.Body.Add(String.Format("{0};", f.CallString()));
|
|
}
|
|
else
|
|
{
|
|
f.Body.Add(String.Format("{0} {1} = {2};", f.ReturnType.CurrentType, "retval", f.CallString()));
|
|
}
|
|
|
|
if (assign_statements.Count > 0)
|
|
{
|
|
f.Body.AddRange(assign_statements);
|
|
}
|
|
|
|
// Return:
|
|
if (!f.ReturnType.CurrentType.ToLower().Contains("void"))
|
|
{
|
|
f.Body.Add("return retval;");
|
|
}
|
|
|
|
// Free all allocated GCHandles
|
|
if (handle_statements.Count > 0)
|
|
{
|
|
f.Body.Unindent();
|
|
f.Body.Add("}");
|
|
f.Body.Add("finally");
|
|
f.Body.Add("{");
|
|
f.Body.Indent();
|
|
|
|
f.Body.AddRange(handle_release_statements);
|
|
|
|
f.Body.Unindent();
|
|
f.Body.Add("}");
|
|
}
|
|
|
|
if (fixed_statements.Count > 0)
|
|
{
|
|
f.Body.Unindent();
|
|
f.Body.Add("}");
|
|
}
|
|
|
|
//if (!f.Unsafe && (fixed_statements.Count > 0 || fixed_statements.Count > 0))
|
|
{
|
|
f.Body.Unindent();
|
|
f.Body.Add("}");
|
|
}
|
|
|
|
return f.Body;
|
|
}
|
|
|
|
#endregion
|
|
|
|
#endregion
|
|
|
|
#region Translate
|
|
|
|
/// <summary>
|
|
/// Translates the opengl return type to the equivalent C# type.
|
|
/// </summary>
|
|
/// <param name="d">The opengl function to translate.</param>
|
|
/// <remarks>
|
|
/// First, we use the official typemap (gl.tm) to get the correct type.
|
|
/// Then we override this, when it is:
|
|
/// 1) A string (we have to use Marshal.PtrToStringAnsi, to avoid heap corruption)
|
|
/// 2) An array (translates to IntPtr)
|
|
/// 3) A generic object or void* (translates to IntPtr)
|
|
/// 4) A GLenum (translates to int on Legacy.Tao or GL.Enums.GLenum otherwise).
|
|
/// Return types must always be CLS-compliant, because .Net does not support overloading on return types.
|
|
/// </remarks>
|
|
protected virtual void TranslateReturnType()
|
|
{
|
|
if (Bind.Structures.Type.GLTypes.ContainsKey(ReturnType.CurrentType))
|
|
ReturnType.CurrentType = Bind.Structures.Type.GLTypes[ReturnType.CurrentType];
|
|
|
|
if (Bind.Structures.Type.CSTypes.ContainsKey(ReturnType.CurrentType))
|
|
ReturnType.CurrentType = Bind.Structures.Type.CSTypes[ReturnType.CurrentType];
|
|
|
|
if (ReturnType.CurrentType.ToLower().Contains("void") && ReturnType.Pointer)
|
|
{
|
|
ReturnType.WrapperType = WrapperTypes.GenericReturnType;
|
|
}
|
|
|
|
if (ReturnType.CurrentType.ToLower().Contains("string"))
|
|
{
|
|
ReturnType.CurrentType = "IntPtr";
|
|
ReturnType.WrapperType = WrapperTypes.StringReturnType;
|
|
}
|
|
|
|
if (ReturnType.CurrentType.ToLower().Contains("object"))
|
|
{
|
|
ReturnType.CurrentType = "IntPtr";
|
|
ReturnType.WrapperType |= WrapperTypes.GenericReturnType;
|
|
}
|
|
|
|
if (ReturnType.CurrentType.Contains("GLenum"))
|
|
{
|
|
if (Settings.Compatibility == Settings.Legacy.None)
|
|
ReturnType.CurrentType =
|
|
String.Format("{0}.{1}",
|
|
Settings.NormalEnumsClass,
|
|
Settings.CompleteEnumName);
|
|
else
|
|
ReturnType.CurrentType = "int";
|
|
}
|
|
|
|
if (ReturnType.CurrentType.ToLower().Contains("bool"))
|
|
{
|
|
// TODO: Is the translation to 'int' needed 100%? It breaks WGL.
|
|
/*
|
|
if (Settings.Compatibility == Settings.Legacy.Tao)
|
|
{
|
|
ReturnType.CurrentType = "int";
|
|
}
|
|
else
|
|
{
|
|
}
|
|
*/
|
|
|
|
//ReturnType.WrapperType = WrapperTypes.ReturnsBool;
|
|
}
|
|
|
|
ReturnType.CurrentType = ReturnType.GetCLSCompliantType();
|
|
}
|
|
|
|
protected virtual void TranslateParameters()
|
|
{
|
|
if (this.Name.Contains("SetLayerPaletteEntries"))
|
|
{
|
|
// Console.WriteLine();
|
|
}
|
|
for (int i = 0; i < Parameters.Count; i++)
|
|
{
|
|
Parameters[i] = Parameter.Translate(Parameters[i], this.Category);
|
|
|
|
// Special cases: glLineStipple and gl(Get)ShaderSource:
|
|
// Check for LineStipple (should be unchecked)
|
|
if (Parameters[i].CurrentType == "UInt16" && Name.Contains("LineStipple"))
|
|
{
|
|
Parameters[i].WrapperType = WrapperTypes.UncheckedParameter;
|
|
}
|
|
|
|
if (Name.Contains("ShaderSource") && Parameters[i].CurrentType.ToLower().Contains("string"))
|
|
{
|
|
// Special case: these functions take a string[]
|
|
//IsPointer = true;
|
|
Parameters[i].Array = 1;
|
|
}
|
|
}
|
|
}
|
|
|
|
internal void Translate()
|
|
{
|
|
TranslateReturnType();
|
|
TranslateParameters();
|
|
|
|
CreateWrappers();
|
|
}
|
|
|
|
#endregion
|
|
}
|
|
|
|
#region class DelegateCollection : Dictionary<string, Delegate>
|
|
|
|
class DelegateCollection : Dictionary<string, Delegate>
|
|
{
|
|
public void Add(Delegate d)
|
|
{
|
|
if (!this.ContainsKey(d.Name))
|
|
{
|
|
this.Add(d.Name, d);
|
|
}
|
|
else
|
|
{
|
|
Trace.WriteLine(String.Format(
|
|
"Spec error: function {0} redefined, ignoring second definition.",
|
|
d.Name));
|
|
}
|
|
}
|
|
}
|
|
|
|
#endregion
|
|
}
|