rename trunk to 1.1svn/1.1 github/svn/1.1

git-svn-id: svn://svn.code.sf.net/p/ultrastardx/svn/branches/1.1@2662 b956fd51-792f-4845-bead-9b4dfca2ff2c
author: tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c> 2010-10-10 22:59:33 +0000
committer: tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c> 2010-10-10 22:59:33 +0000
commit: 35187604cef84864a908972d07361a5bd57e29ca (patch)
tree: dc95a8b1abeabd3a466729056ab8d37aaa6e72ea /src/lua
parent: 58c1daf3692d4c5c534750a4fda97e087b0f0cbb (diff)
parent: 02bd10f0798829ab69d2028b988cb2a54eae292a (diff)
download: usdx-github/svn/1.1.tar.gz
usdx-github/svn/1.1.tar.xz
usdx-github/svn/1.1.zip
10 files changed, 4503 insertions, 0 deletions
diff --git a/src/lua/UHookableEvent.pas b/src/lua/UHookableEvent.pas
new file mode 100644
index 00000000..8ad7ea9c
--- /dev/null
+++ b/src/lua/UHookableEvent.pas
@@ -0,0 +1,380 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit UHookableEvent;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses ULua;
+
+type
+  { Record holding information about a hook of an event }
+  PHook = ^THook;
+  THook = record
+    Handle: Integer; //< Handle to identify the hook, e.g. for unhooking by plugin
+    Parent: Integer; //< Lua Core Handle this hook belongs to
+
+    Func: String;   //< Name of the global that holds the function
+
+    Next: PHook; //< Next Hook in list (nil for the first)
+  end;
+
+  { procedure is called before each call to the hooking lua functions, to push values on stack
+    returns the number of pushed arguments}
+  PrepareStackProc = Function(L: PLua_State): Integer;
+
+  { class representing a hookable event }
+  THookableEvent = class
+    private
+      iHandle: Integer; //< used to unregister at lua core
+      LastHook: PHook;  //< last hook in hook list, first to be called
+      NextHookHandle: Integer;  //< handle to identify next hook
+
+      sName: String;    //< the events name
+
+      PrepareStack: PrepareStackProc; //< prepare stack procedure passed to constructor
+      CallinProcess: boolean; //< true if a chain call is in process, to prepare unhooking during calls
+      HooksToRemove: array of PHook; // hooks to delete after chaincall
+
+      procedure RemoveWaitingHooks;
+    public
+      constructor Create(Name: String; const Proc: PrepareStackProc = nil);
+
+      property Name: String read sName;             //< returns the events name
+      property Handle: Integer read iHandle;        //< returns the events name
+
+      procedure Hook(L: Plua_State; Parent: Integer; Func: String); //< pushes hook object/table to the lua stack
+      procedure UnHook(L: Plua_State; hHook: Integer);              //< unhook by plugin. push true or error string to lua stack
+
+      procedure UnHookByParent(Parent: Integer);     //< deletes all hooks by a specified parent (unhook by core)
+
+      function CallHookChain(Breakable: Boolean): PLua_State;   //< calls the events hookchain. if breakable, plugin can breake the chain by returning a value != 0 or false or nil
+
+      destructor Destroy; override;
+  end;
+
+{ the default function for THookableEvent.PrepareStack it don't pass any arguments }
+function PrepareStack_Dummy(L: PLua_State): Integer;
+
+{ function in resulting hook table. it calls the unhook command of the event on plugins demand }
+function LuaHook_UnHook(L: Plua_State): Integer; cdecl;
+
+implementation
+uses ULuaCore;
+
+constructor THookableEvent.Create(Name: String; const Proc: PrepareStackProc);
+begin
+  inherited Create;
+  
+  Self.sName := Name;
+
+  if (@Proc = nil) then
+    Self.PrepareStack := @PrepareStack_Dummy
+  else
+    Self.PrepareStack := Proc;
+
+  //init LastHook pointer w/ nil
+  LastHook := nil;
+  NextHookHandle := 1;
+
+  iHandle := LuaCore.RegisterEvent(Self);
+end;
+
+destructor THookableEvent.Destroy;
+var
+  Prev: PHook;
+  Cur:  PHook;
+begin
+  //delete all hooks
+  Cur := LastHook;
+  While (Cur <> nil) do
+  begin
+    Prev := Cur;
+    Cur := Prev.Next;
+
+    Dispose(Prev);
+  end;
+
+  //remove from luacores list
+  LuaCore.UnRegisterEvent(iHandle);
+
+  inherited;
+end;
+
+{ adds hook to events list and pushes hook object/table to the lua stack }
+procedure  THookableEvent.Hook(L: PLua_State; Parent: Integer; Func: String);
+  var
+    Item: PHook;
+    P: TLuaPlugin;
+begin
+  P := LuaCore.GetPluginById(Parent);
+  if (P <> nil) then
+  begin
+    // get mem and fill it w/ data
+    New(Item);
+    Item.Handle := NextHookHandle;
+    Inc(NextHookHandle);
+
+    Item.Parent := Parent;
+    Item.Func := Func;
+
+    // add at front of the hook chain
+    Item.Next := LastHook;
+    LastHook := Item;
+
+    //we need 2 free stack slots
+    lua_checkstack(L, 2);
+
+    //create the hook table, we need 2 elements (event name and unhook function)
+    lua_createtable(L, 0, 2);
+
+    //push events name
+    lua_pushstring(L, PAnsiChar(Name));
+
+    //add the name to the table
+    lua_setfield(L, -2, 'Event');
+
+    //push hook id to the stack
+    lua_pushinteger(L, Item.Handle);
+
+    //create a c closure, append one value from stack(the id)
+    //this will pop both, the function and the id
+    lua_pushcclosure(L, LuaHook_UnHook, 1);
+
+    //add the function to our table
+    lua_setfield(L, -2, 'Unhook');
+
+    //the table is left on the stack, it is our result
+  end;
+end;
+
+{ removes hooks in HookstoRemove array from chain }
+procedure THookableEvent.RemoveWaitingHooks;
+  function IsInArray(Cur: PHook): boolean;
+    var I: Integer;
+  begin
+    Result := false;
+    for I := 0 to high(HooksToRemove) do
+      if (HooksToRemove[I] = Cur) then
+      begin
+        Result := true;
+        Break;
+      end;
+  end;
+
+  var
+    Cur, Prev: PHook;
+begin
+  Prev := nil;
+  Cur := LastHook;
+
+  while (Cur <> nil) do
+  begin
+    if (IsInArray(Cur)) then
+    begin //we found the hook
+      if (prev <> nil) then
+        Prev.Next := Cur.Next
+      else //last hook found
+        LastHook := Cur.Next;
+
+      //free hooks memory
+      Dispose(Cur);
+
+      if (prev <> nil) then
+        Cur := Prev.Next
+      else
+        Cur := LastHook;
+    end
+    else
+    begin
+      Prev := Cur;
+      Cur := Prev.Next;
+    end;
+  end;
+
+  SetLength(HooksToRemove, 0);
+end;
+
+{ unhook by plugin. push true or error string to lua stack }
+procedure  THookableEvent.UnHook(L: Plua_State; hHook: Integer);
+  var
+    Cur, Prev: PHook;
+    Len: integer;
+begin
+  if (hHook < NextHookHandle) and (hHook > 0) then
+  begin
+    //Search for the Hook
+    Prev := nil;
+    Cur := LastHook;
+
+    while (Cur <> nil) do
+    begin
+      if (Cur.Handle = hHook) then
+      begin //we found the hook
+        if not CallinProcess then
+        begin // => remove it
+          if (prev <> nil) then
+            Prev.Next := Cur.Next
+          else //last hook found
+            LastHook := Cur.Next;
+
+          //free hooks memory
+          Dispose(Cur);
+        end
+        else
+        begin // add to list of hooks to remove
+          Len := Length(HooksToRemove);
+          SetLength(HooksToRemove, Len + 1);
+          HooksToRemove[Len] := Cur;
+        end;
+        
+        //indicate success
+        lua_pushboolean(L, True);
+        exit; //break the chain and exit the function
+      end;
+      Prev := Cur;
+      Cur := Prev.Next;
+    end;
+
+    lua_pushstring(L, PAnsiChar('handle already unhooked')); //the error description
+  end
+  else
+    lua_pushstring(L, PAnsiChar('undefined hook handle')); //the error description
+end;
+
+{ deletes all hooks by a specified parent (unhook by core) }
+procedure  THookableEvent.UnHookByParent(Parent: Integer);
+  var
+    Cur, Prev: PHook;
+begin
+  Prev := nil;
+  Cur := LastHook;
+
+  While (Cur <> nil) do
+  begin
+    if (Cur.Parent = Parent) then
+    begin //found a hook from parent => remove it
+      if (Prev <> nil) then
+        Prev.Next := Cur.Next
+      Else
+        LastHook := Cur.Next;
+
+      Dispose(Cur);
+
+      if (Prev <> nil) then
+        Cur := Prev.Next
+      else
+        Cur := LastHook;
+    end
+    else //move through the chain
+    begin
+      Prev := Cur;
+      Cur := Prev.Next;
+    end;
+  end;
+end;
+
+{ calls the events hookchain. if breakable, plugin can breake the chain
+  by returning a value
+  breakable is pushed as the first parameter to the hooking functions
+  if chain is broken the LuaStack is returned, with all results left
+  you may call lua_clearstack }
+function  THookableEvent.CallHookChain(Breakable: Boolean): Plua_State;
+  var
+    Cur: PHook;
+    P: TLuaPlugin;
+begin
+  Result := nil;
+
+  CallinProcess := true;
+  
+  Cur := LastHook;
+  While (Cur <> nil) do
+  begin
+    P := LuaCore.GetPluginById(Cur.Parent);
+    lua_pushboolean(P.LuaState, Breakable);
+
+    if  (P.CallFunctionByName(Cur.Func, 1 + PrepareStack(P.LuaState), LUA_MULTRET))
+    and Breakable
+    and (lua_gettop(P.LuaState) > 0) then
+    begin //Chain Broken
+      Result := P.LuaState;
+      Break;
+    end;
+
+    Cur := Cur.Next;
+  end;
+
+  RemoveWaitingHooks;
+  CallinProcess := false;
+end;
+
+{ the default function for THookableEvent.PrepareStack it don't pass any arguments }
+function PrepareStack_Dummy(L: PLua_State): Integer;
+begin
+  Result := 0;
+end;
+
+{ function in resulting hook table. it calls the unhook command of the event on plugins demand }
+function LuaHook_UnHook(L: Plua_State): Integer; cdecl;
+  var
+    Name: string;
+    Event: THookableEvent;
+    hHook: integer;
+begin
+  Result := 0;
+
+  if not lua_isTable(L, 1) then
+    LuaL_Error(L, 'Can''t find hook table in LuaHook_Unhook. Please call Unhook with method seperator (colon) instead of a point.');
+
+  // get event name
+  Lua_GetField(L, 1, 'Event');
+  if not lua_isString(L, -1) then
+    LuaL_Error(L, 'Can''t get event name in LuaHook_Unhook');
+
+  Name := Lua_ToString(L, -1);
+
+  // get event by name
+  Event := LuaCore.GetEventbyName(Name);
+
+  // free stack slots
+  Lua_pop(L, Lua_GetTop(L));
+
+  if (Event = nil) then
+    LuaL_Error(L, PAnsiChar('event ' + Name + ' does not exist (anymore?) in LuaHook_Unhook'));
+
+  // get the hookid
+  hHook := lua_ToInteger(L, lua_upvalueindex(1));
+
+  Event.UnHook(L, hHook);
+end;
+
+end.
+\ No newline at end of file
diff --git a/src/lua/ULuaCore.pas b/src/lua/ULuaCore.pas
new file mode 100644
index 00000000..ea9fd991
--- /dev/null
+++ b/src/lua/ULuaCore.pas
@@ -0,0 +1,1021 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit ULuaCore;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses SysUtils, ULua, UHookableEvent, UPath;
+
+type
+  { this exception is raised when the lua panic function
+    is called. Only in case we use call instead of pcall.
+    it has the lua error string in its message attribute }
+  ELuaException = class(Exception);
+
+  { record represents item of Eventlist of TLuaCore }
+  PEventListItem = ^TEventListItem;
+  TEventListItem = record
+    Event: THookableEvent;
+    Next:  PEventListItem;
+  end;
+
+  { record represents a module }
+  TLuaModule = record
+    Name:      string;
+    Functions: array of luaL_reg; //modules functions, w/ trailing nils this time
+  end;
+
+  TLuaPlugin_Status = (psNone, psRunning, psClosed, psErrorOnLoad, psErrorOnCall, psErrorInInit, psErrorOnRun);
+  { class represents a loaded plugin }
+  TLuaPlugin = class
+    private
+      iId:        integer;
+      Filename:   IPath;
+      State:      Plua_State; //< all functions of this plugin are called with this Lua state
+      bPaused:    boolean;    //< If true no lua functions from this state are called
+      ErrorCount: integer;    //< counts the errors that occured during function calls of this plugin
+      ShutDown:   boolean;    //< for self shutdown by plugin. true if plugin wants to be unloaded after execution of current function
+
+      sName:    string;
+      sVersion: string;
+      sAuthor:  string;
+      sURL:     string;
+
+      sStatus:  TLuaPlugin_Status;
+    public
+      constructor Create(Filename: IPath; Id: integer);
+
+      property Id:      integer read iId;
+      property Name:    string read sName;
+      property Version: string read sVersion;
+      property Author:  string read sAuthor;
+      property Url:     string read sUrl;
+
+      property Status:      TLuaPlugin_Status read sStatus;
+      property CountErrors: integer read ErrorCount;
+
+      property LuaState:    Plua_State read State;
+
+      procedure Load;
+
+      procedure Register(Name, Version, Author, Url: string);
+      function HasRegistred: boolean;
+
+      procedure PausePlugin(doPause: boolean);
+      property Paused: boolean read bPaused write PausePlugin;
+
+      procedure ShutMeDown;
+
+      { calls the lua function in the global w/ the given name.
+        the arguments to the function have to be pushed to the stack
+        before calling this function.
+        the arguments and the function will be removed from stack
+        results will not be removed.
+        if result is false there was an error calling the function
+        if ReportErrors is true the errorstring is popped from stack
+        and written to error.log otherwise it is left on stack}
+      function CallFunctionByName(Name:               string; 
+                                  const nArgs:        integer = 0;
+				  const nResults:     integer = 0;
+				  const ReportErrors: boolean = true): boolean;
+      procedure ClearStack;
+
+      procedure Unload; //< Destroys the Luastate, and frees as much mem as possible, w/o destroying the class and important information 
+
+      destructor Destroy; override;
+  end;
+
+  { class managing the plugins w/ their LuaStates, the events and modules
+    it also offers the usdx table to the plugins w/ some basic functionality
+    like self unload or hook getting}
+  TLuaCore = class
+    private
+      EventList:         PEventListItem;  //< pointer to first registred Event, ordered by name
+      EventHandles:      array of string; //< Index is Events handle, value is events name. if length(value) is 0 handle is considered unregistred
+
+      Plugins:           array of TLuaPlugin;
+
+      eLoadingFinished: THookableEvent;
+    protected
+      Modules: array of TLuaModule; //< modules that has been registred, has to be proctected because fucntions of this unit need to get access
+
+      function GetModuleIdByName(Name: string): integer; //returns id of given module, or -1 if module is not found
+    public
+      constructor Create;
+      destructor Destroy; override;
+
+      procedure LoadPlugins;                         //< calls LoadPlugin w/ Plugindir and LoadingFinished Eventchain
+
+      procedure BrowseDir(Dir: IPath);               //< searches for files w/ extension .usdx in the specified dir and tries to load them w/ lua
+      procedure LoadPlugin(Filename: IPath);         //< tries to load filename w/ lua and creates the default usdx lua environment for the plugins state
+
+      function GetPluginByName(Name: string): TLuaPlugin;
+      function GetPluginById(Id: integer): TLuaPlugin;
+
+      { this function adds a module loader for your functions
+        name is the name the script needs to write in its require()
+        Functions is an array of lua calling compatible functions
+        w/o trailing nils! }
+      procedure RegisterModule(Name: string; const Functions: array of luaL_reg);
+
+      function RegisterEvent(Event: THookableEvent): integer; //< adds the event to eventlist and returns its handle
+      procedure UnRegisterEvent(hEvent: integer);             //< removes the event from eventlist by handle
+
+      function GetEventbyName(Name: string): THookableEvent;       //< tries to find the event w/ the given name in the list
+      function GetEventbyHandle(hEvent: integer): THookableEvent;  //< tries to find the event w/ the given handle
+
+      procedure UnHookByParent(Parent: integer); //< remove all hooks by given parent id from all events
+
+      procedure PrepareState(L: Plua_State);
+
+      procedure DumpPlugins; //< prints plugin runtime information w/ Log.LogStatus
+  end;
+
+//some luastyle functions to call from lua scripts
+{ register global, used by plugins to identify
+  register(plugin name, plugin version, [plugin author], [plugin homepage])
+  can only be called once since the global "register" is niled by the function
+  returns true on success. (name does not exist)}
+function TLuaPlugin_Register (L: Plua_State): integer; cdecl;
+
+{ moduleloader for usdx.* modules
+  stored in package.loaders[3]
+  package.loaders[3] (module name)
+  returns a function to load the requested module or a error
+  description(string) when the module is not found }
+function TLuaCore_ModuleLoader (L: Plua_State): integer; cdecl;
+
+{ loads module specified by a cfunction upvalue to
+  usdx.modulename and returns it.
+  loadmodule(module name) }
+function TLuaCore_LoadModule (L: Plua_State): integer; cdecl;
+
+{ custom lua panic function
+  it writes error string to error.log and raises an ELuaException
+  that may be caught }
+function TLua_CustomPanic (L: Plua_State): integer; cdecl;
+
+{ replacement for luas require function
+  can be called with more than one parameter to require
+  some modules at once. e.g.: require('math', 'Usdx.Log')
+  modules are loaded from right to left
+  unlike standard require the module tables are not returned
+  the standard require function in _require is called by
+  this function }
+function TLua_CustomRequire(L: PLua_State): integer; cdecl;
+
+
+var
+  LuaCore: TLuaCore;
+
+implementation
+uses
+  StrUtils,
+  ULog,
+  UFilesystem,
+  ULuaUsdx,
+  UPathUtils,
+  ULuaUtils;
+
+constructor TLuaCore.Create;
+begin
+  inherited;
+
+  //init EventList w/ nil
+  EventList := nil;
+
+  eLoadingFinished := nil;
+end;
+
+destructor TLuaCore.Destroy;
+var
+  Cur:  PEventListItem;
+  Prev: PEventListItem;
+begin
+  SetLength(EventHandles, 0);
+
+  //delete event list
+  Cur := EventList;
+
+  while(Cur <> nil) do
+  begin
+    Prev := Cur;
+    Cur := Prev.Next;
+
+    Dispose(Prev);
+  end;
+
+  inherited;
+end;
+
+{ calls BrowseDir w/ plugin dir and LoadingFinished eventchain }
+procedure TLuaCore.LoadPlugins;
+begin
+  // we have to create event here, because in create it can
+  // not be registred, because LuaCore is no assigned
+  if (not Assigned(eLoadingFinished)) then
+    eLoadingFinished := THookableEvent.Create('Usdx.LoadingFinished');
+
+  BrowseDir(PluginPath);
+  eLoadingFinished.CallHookChain(false);
+end;
+
+{ searches for files w/ extension .usdx in the specified
+  dir and tries to load them w/ lua }
+procedure TLuaCore.BrowseDir(Dir: IPath);
+  var
+    Iter:     IFileIterator;
+    FileInfo: TFileInfo;
+    FileName: IPath;
+    Ext:      IPath;
+begin
+  Ext := Path('.usdx');
+
+  // search for all files and directories
+  Iter := FileSystem.FileFind(Dir.Append('*'), faAnyFile);
+  while (Iter.HasNext) do
+  begin
+    FileInfo := Iter.Next;
+    FileName := FileInfo.Name;
+    if ((FileInfo.Attr and faDirectory) <> 0) then
+    begin
+      if (not FileName.Equals('.')) and (not FileName.Equals('..')) then
+        BrowseDir(Dir.Append(FileName));
+    end
+    else
+    begin
+      if (Ext.Equals(FileName.GetExtension(), true)) then
+      begin
+        LoadPlugin(Dir.Append(FileName));
+      end;
+    end;
+  end;
+end;
+
+{ tries to load filename w/ lua and creates the default
+  usdx lua environment for the plugins state }
+procedure TLuaCore.LoadPlugin(Filename: IPath);
+  var
+    Len: integer;  
+begin
+  Len := Length(Plugins);
+  SetLength(Plugins, Len + 1);
+  Plugins[Len] := TLuaPlugin.Create(Filename, Len);
+  Plugins[Len].Load;
+end;
+
+{ returns Plugin on success nil on failure }
+function TLuaCore.GetPluginByName(Name: string): TLuaPlugin;
+  var
+    I: integer;
+begin
+  Result := nil;
+  Name := lowercase(Name);
+
+  for I := 0 to High(Plugins) do
+    if (lowercase(Plugins[I].Name) = Name) then
+    begin
+      Result := GetPluginById(I);
+      Exit;
+    end;
+end;
+
+{ returns Plugin on success nil on failure }
+function TLuaCore.GetPluginById(Id: integer): TLuaPlugin;
+begin
+  if (Id >= 0) and (Id <= High(Plugins)) then
+    Result := Plugins[Id]
+  else
+    Result := nil;
+end;
+
+{ this function adds a module loader for your functions
+  name is the name the script needs to write in its require()
+  Functions is an array of lua calling compatible functions
+  w/o trailing nils! }
+procedure TLuaCore.RegisterModule(Name: string; const Functions: array of luaL_reg);
+  var
+    Len:     integer;
+    FuncLen: integer;
+    I:       integer;
+begin
+  Len := Length(Modules);
+  SetLength(Modules, Len + 1);
+  Modules[Len].Name := Name;
+
+  FuncLen := Length(Functions);
+  SetLength(Modules[Len].Functions, FuncLen + 1);
+  
+  for I := 0 to FuncLen-1 do
+    Modules[Len].Functions[I] := Functions[I];
+
+  Modules[Len].Functions[FuncLen].name := nil;
+  Modules[Len].Functions[FuncLen].func := nil;
+end;
+
+{ adds the event to eventlist and returns its handle
+  called by THookableEvent on creation }
+function TLuaCore.RegisterEvent(Event: THookableEvent): integer;
+var
+  Cur, Prev, Item: PEventListItem;
+begin
+  if (Event <> nil) and (Length(Event.Name) > 0) then
+  begin
+    Result := Length(EventHandles);
+    SetLength(EventHandles, Result + 1); //get Handle and copy it to result
+
+    EventHandles[Result] := Event.Name;
+
+    //create eventlist item
+    New(Item);
+    Item.Event := Event;
+
+    //search for a place for this event in alphabetical order
+    Prev := nil;
+    Cur := EventList;
+
+    while (Cur <> nil) and (CompareStr(Cur.Event.Name, EventHandles[Result]) < 0) do
+    begin
+      Prev := Cur;
+      Cur := Prev.Next;
+    end;
+
+    //found the place => add new item
+    if (Prev <> nil) then
+      Prev.Next := Item
+    else //first item
+      EventList := Item;
+
+    Item.Next := Cur;
+  end
+  else
+    Result := -1;
+end;
+
+{ removes the event from eventlist by handle }
+procedure TLuaCore.UnRegisterEvent(hEvent: integer);
+  var
+    Cur, Prev: PEventListItem;
+begin
+  if (hEvent >= 0) and (hEvent <= High(EventHandles)) and (Length(EventHandles[hEvent]) > 0) then
+  begin //hEvent in bounds and not already deleted
+    //delete from eventlist
+    Prev := nil;
+    Cur  := EventList;
+
+    while (Cur <> nil) and (CompareStr(Cur.Event.Name, EventHandles[hEvent]) < 0) do
+    begin
+      Prev := Cur;
+      Cur  := Prev.Next;
+    end;
+
+    if (Cur <> nil) and (Cur.Event.Name = EventHandles[hEvent]) then
+    begin //delete if found
+      Prev.Next := Cur.Next; // remove from list
+      Dispose(Cur); // free memory
+    end;
+
+    //delete from handle array
+    EventHandles[hEvent] := '';
+  end;
+end;
+
+{ tries to find the event w/ the given name in the list
+  to-do : use binary search algorithm instead of linear search here
+          check whether this is possible (events are saved in a pointer list) }
+function TLuaCore.GetEventbyName(Name: string): THookableEvent;
+  var
+    Cur: PEventListItem;
+begin
+  Result := nil;
+
+  if (Length(Name) > 0) then
+  begin
+    //search in eventlist
+    Cur := EventList;
+
+    while (Cur <> nil) and (CompareStr(Cur.Event.Name, Name) < 0) do
+    begin
+      Cur := Cur.Next;
+    end;
+
+    if (Cur <> nil) and (Cur.Event.Name = Name) then
+    begin //we found what we want to find
+      Result := Cur.Event;
+    end;
+  end;
+end;
+
+{ tries to find the event w/ the given handle }
+function TLuaCore.GetEventbyHandle(hEvent: integer): THookableEvent;
+begin
+  if (hEvent >= 0) and (hEvent <= High(EventHandles)) and (Length(EventHandles[hEvent]) > 0) then
+  begin //hEvent in bounds and not already deleted
+    Result := GetEventByName(EventHandles[hEvent]);
+  end
+  else
+    Result := nil;
+end;
+
+{ remove all hooks by given parent id from all events }
+procedure TLuaCore.UnHookByParent(Parent: integer);
+  var
+    Cur: PEventListItem;
+begin
+  if (Parent >= 0) and (Parent <= High(Plugins)) then
+  begin
+    // go through event list
+    Cur := EventList;
+
+    while (Cur <> nil) do
+    begin
+      Cur.Event.UnHookByParent(Parent);
+      Cur := Cur.Next;
+    end;
+  end;
+end;
+
+{ prepares the given already opened Lua state with the
+  basic usdx environment, e.g.: base and package Modules,
+  usdx moduleloader and usdx table }
+procedure TLuaCore.PrepareState(L: Plua_State);
+begin
+  //load basic lib functionality
+  lua_pushcfunction(L, luaopen_base);
+  lua_call(L, 0, 0);
+  lua_pop(L, lua_gettop(L)); //pop the results
+
+  //load module functionality
+  lua_pushcfunction(L, luaopen_package);
+  lua_call(L, 0, 0);
+  lua_pop(L, lua_gettop(L)); //pop the results
+
+  { adds the loader for the other standard lib to package.preload table
+    plugins can call e.g. require('math') if they need math functionality }
+
+  // we need 3 free stack slots
+  lua_checkstack(L, 3);
+
+  // get package table
+  lua_getglobal (L, PChar('package'));
+
+  // get package.preload table
+  lua_getfield (L, -1, PChar('preload'));
+
+  {**** add string lib }
+
+  // push loader function
+  lua_pushcfunction(L, luaopen_string);
+
+  // set package.preload.x loader
+  lua_setfield (L, -2, PChar('string'));
+
+  {**** add table lib }
+
+  // push loader function
+  lua_pushcfunction(L, luaopen_table);
+
+  // set package.preload.x loader
+  lua_setfield (L, -2, PChar('table'));
+
+  {**** add math lib }
+
+  // push loader function
+  lua_pushcfunction(L, luaopen_math);
+
+  // set package.preload.x loader
+  lua_setfield (L, -2, PChar('math'));
+
+  {**** add os lib }
+
+  // push loader function
+  lua_pushcfunction(L, luaopen_os);
+
+  // set package.preload.x loader
+  lua_setfield (L, -2, PChar('os'));
+
+  //pop package.preload table from stack
+  lua_pop(L, 1);
+
+  // get package.loaders table
+  lua_getfield (L, -1, PChar('loaders'));
+
+  {**** Move C-Library and all-in-one module loader backwards,
+        slot 3 is free now }
+  // get package.loaders[4] function
+  lua_pushinteger(L, 5); //push new index
+  lua_pushinteger(L, 4); //push old index
+  lua_gettable (L, -3);
+
+  // and move it to package.loaders[5]
+  lua_settable (L, -3);
+
+  // get package.loaders[3] function
+  lua_pushinteger(L, 4); //push new index
+  lua_pushinteger(L, 3); //push old index
+  lua_gettable (L, -3);
+
+  // and move it to package.loaders[4]
+  lua_settable (L, -3);
+
+  {**** now we add the core module to package.loaders[3] }
+  lua_pushinteger(L, 3); //push new loaders index
+  lua_pushcfunction(L, TLuaCore_ModuleLoader);
+
+  // and move it to package.loaders[3]
+  lua_settable (L, -3);
+
+  //pop both package and package.loaders tables from stack
+  lua_pop(L, 2);
+
+  {**** replace the standard require w/ our custom require function }
+  // first move standard require function to _require
+  lua_getfield(L, LUA_GLOBALSINDEX, PChar('require'));
+  lua_setfield(L, LUA_GLOBALSINDEX, PChar('_require'));
+
+  // then save custom require function to require
+  lua_pushcfunction(L, TLua_CustomRequire);
+  lua_setfield(L, LUA_GLOBALSINDEX, PChar('require'));
+
+  {**** now we create the usdx table }
+  //at first functions from ULuaUsdx
+  luaL_register(L, 'Usdx', @ULuaUsdx_Lib_f[0]);
+end;
+
+{ returns id of given module, or -1 if module is not found }
+function TLuaCore.GetModuleIdByName(Name: string): integer;
+  var
+    I: integer;
+begin
+  Result := -1;
+  
+  for I := 0 to High(Modules) do
+    if (Modules[I].Name = Name) then
+    begin
+      Result := I;
+      Exit;
+    end;
+end;
+
+{ moduleloader for usdx.* modules
+  stored in package.loaders[3]
+  package.loaders[3] (module name)
+  returns a function to load the requested module or an error
+  description(string) when the module is not found }
+function TLuaCore_ModuleLoader (L: Plua_State): integer; cdecl;
+  var
+    Name: string;
+    ID:   integer;
+begin
+  Result := 1; //we will return one value in any case (or never return in case of an error)
+
+  if (lua_gettop(L) >= 1) then
+  begin
+    // pop all arguments but the first
+    if (lua_gettop(L) > 1) then
+      lua_pop(L, lua_gettop(L)-1);
+
+
+    if (lua_IsString(L, 1)) then
+    begin //we got the name => go get it
+      Name := lua_toString(L, 1);
+
+      //we need at least 6 letters
+      //and first 5 letters have to be usdx.
+      if (Length(Name) > 5) and (lowercase(copy(Name, 1, 5))='usdx.') then
+      begin
+        ID := LuaCore.GetModuleIdByName(copy(Name, 6, Length(Name) - 5));
+        if (ID >= 0) then
+        begin //found the module -> return loader function
+          lua_pushinteger(L, Id);
+          lua_pushcclosure(L, TLuaCore_LoadModule, 1);
+          //the function is the result, so we leave it on stack
+        end
+        else
+          lua_pushString(L, PChar('usdx module "' + Name + '" couldn''t be found'));
+      end
+      else
+        lua_pushString(L, PChar('module doesn''t have "Usdx." prefix'));
+
+    end
+    else
+      luaL_argerror(L, 1, PChar('string expected'));
+  end
+  else
+    luaL_error(L, PChar('no modulename specified in usdx moduleloader')); 
+end;
+
+{ loads module specified by a cfunction upvalue to
+  usdx.modulename and returns it.
+  loadmodule(module name) }
+function TLuaCore_LoadModule (L: Plua_State): integer; cdecl;
+  var
+    Id: integer;
+begin
+  if (not lua_isnoneornil(L, lua_upvalueindex(1))) then
+  begin
+    Id := lua_ToInteger(L, lua_upvalueindex(1));
+
+    luaL_register(L, PChar('Usdx.' + LuaCore.Modules[Id].Name), @LuaCore.Modules[Id].Functions[0]);
+
+    // set the modules table as global "modulename"
+    // so it can be accessed either by Usdx.modulename.x() or
+    // by modulename.x()
+    lua_setglobal(L, PChar(LuaCore.Modules[Id].Name));
+
+    // no we net to push the table again to return it
+    lua_getglobal(L, PChar(LuaCore.Modules[Id].Name));
+
+    Result := 1; //return table
+  end
+  else
+    luaL_error(L, PChar('no upvalue found in LuaCore_LoadModule'));
+end;
+
+{ prints plugin runtime information w/ Log.LogStatus }
+procedure TLuaCore.DumpPlugins;
+  function PluginStatusToString(Status: TLuaPlugin_Status): string;
+  begin
+    case Status of
+      psNone:        Result := 'not loaded';
+      psRunning:     Result := 'running';
+      psClosed:      Result := 'closed';
+      psErrorOnLoad: Result := 'error during load';
+      psErrorOnCall: Result := 'error during call';
+      psErrorInInit: Result := 'error in plugin_init()';
+      psErrorOnRun:  Result := 'error on function call';
+      else           Result := 'unknown';
+    end;
+  end;
+
+var
+  I: integer;
+begin
+  // print table header
+  Log.LogStatus(Format('%3s %-30s %-8s %-10s %-7s %-6s', [
+      '#', 'Name', 'Version', 'Status', 'Paused', '#Errors'
+  ]), 'LuaCore Plugins');
+
+  for I := 0 to High(Plugins) do
+    Log.LogStatus(Format('%3d %-30s %-8s %-10s %-7s %-6d', [
+        Plugins[I].Id, Plugins[I].Name, Plugins[I].Version,
+        PluginStatusToString(Plugins[I].Status),
+        BoolToStr(Plugins[I].Paused, true),
+        Plugins[I].CountErrors
+    ]), 'LuaCore Plugins');
+  if (High(Plugins) < 0) then
+    Log.LogError(' no plugins loaded ', 'LuaCore Plugins');
+end;
+
+// Implementation of TLuaPlugin
+//--------
+constructor TLuaPlugin.Create(Filename: IPath; Id: integer);
+begin
+  inherited Create;
+  Self.iId := Id;
+  Self.Filename := Filename;
+
+  // set some default attributes
+  Self.bPaused    := false;
+  Self.ErrorCount := 0;
+  Self.sName      := 'not registred';
+  Self.sStatus    := psNone;
+  Self.ShutDown   := false;
+
+  State := nil; //< to prevent calls to unopened state
+end;
+
+destructor TLuaPlugin.Destroy;
+begin
+  Unload;
+  inherited;
+end;
+
+{ does the main loading part
+  can not be called by create, because Plugins[Id] isn't defined there }
+procedure TLuaPlugin.Load;
+begin
+  // create Lua state for this plugin
+  State := luaL_newstate;
+
+  //set our custom panic function if s/t went wrong along the init
+  //we don't expect
+  lua_atPanic(State, TLua_CustomPanic);
+
+  if (LuaL_LoadFile(State, PChar(Filename.ToNative)) = 0) then
+  begin // file loaded successful
+    { note: we run the file here, but the environment isn't
+            set up now. it just causes the functions to
+            register in globals and runs the code in the file
+            body. At least there should be no code, it could
+            neither use functions from baselibs nor load libs
+            with require, this code would be useless. }
+    if (lua_pcall(State, 0, 0, 0) = 0) then
+    begin // file called successful
+
+      //let the core prepare our state
+      LuaCore.PrepareState(State);
+
+      // set register function
+      lua_checkstack(State, 2);
+      lua_pushinteger(State, Id);
+      lua_pushcclosure(State, TLuaPlugin_Register, 1); 
+      lua_setglobal(State, PChar('register'));
+
+      // write plugin id to registry
+      lua_pushinteger(State, iId);
+      lua_setfield (State, LUA_REGISTRYINDEX, '_USDX_STATE_ID');
+      lua_pop(State, Lua_GetTop(State));
+
+      // now run the plugin_init function
+      // plugin_init() if false or nothing is returned plugin init is aborted
+      if (CallFunctionByName('plugin_init', 0, 1)) then
+      begin
+        if (HasRegistred) and (sStatus = psNone) and (lua_toBoolean(State, 1)) then
+        begin
+          sStatus := psRunning;
+          ClearStack;
+        end
+        else
+          Unload;
+      end
+      else
+      begin
+        sStatus := psErrorInInit;
+        Log.LogError('error in plugin_init: ' + Self.Filename.ToNative, 'lua');
+        Unload;
+      end;
+    end
+    else
+    begin
+      sStatus := psErrorOnLoad;
+      Log.LogError(String(lua_toString(State, 1)), 'lua');
+      Log.LogError('unable to call file: ' + Self.Filename.ToNative, 'lua');
+      Unload;
+    end;
+
+  end
+  else
+  begin
+    sStatus := psErrorOnLoad;
+    Log.LogError(String(lua_toString(State, 1)), 'lua');
+    Log.LogError('unable to load file: ' + Self.Filename.ToNative, 'lua');
+    Unload;
+  end;
+end;
+
+procedure TLuaPlugin.Register(Name, Version, Author, Url: string);
+begin
+  sName    := Name;
+  sVersion := Version;
+  sAuthor  := Author;
+  sURL     := Url;
+end;
+
+{ returns true if plugin has called register }
+function TLuaPlugin.HasRegistred: boolean;
+begin
+  Result := (Self.sName <> 'not registred');
+end;
+
+procedure TLuaPlugin.PausePlugin(doPause: boolean);
+begin
+  bPaused := doPause;
+end;
+
+{ unload plugin after execution of the current function }
+procedure TLuaPlugin.ShutMeDown;
+begin
+  ShutDown := true;
+end;
+
+{ calls the lua function in the global w/ the given name.
+  the arguments to the function have to be pushed to the stack
+  before calling this function.
+  the arguments and the function will be removed from stack
+  results will not be removed.
+  if result is false there was an error calling the function,
+  if ReportErrors is true the errorstring is popped from stack
+  and written to error.log otherwise it is left on stack}
+function TLuaPlugin.CallFunctionByName(Name:               string; 
+                                       const nArgs:        integer;
+				       const nResults:     integer;
+				       const ReportErrors: boolean): boolean;
+begin
+  Result := false;
+  if (State <> nil) then
+  begin
+    if (not bPaused) then
+    begin
+      // we need at least one stack slot free
+      lua_checkstack(State, 1);
+
+      // lua_getglobal(State, PChar(Name)); //this is just a macro:
+      lua_getfield(State, LUA_GLOBALSINDEX, PChar(Name));
+
+      if (lua_isfunction(State, -1)) then
+      begin //we got a function
+        // move function in front of the arguments (if any)
+        if (nArgs > 0) then
+          lua_insert(State, -(nArgs + 1));
+
+        // call it!
+        if (lua_pcall(State, nArgs, nResults, 0) = 0) then
+          Result := true //called w/o errors
+        else //increase error counter
+          Inc (ErrorCount);
+      end
+      else
+      begin //we have to pop the args and the field we pushed from stack
+        lua_pop(State, nArgs + 1);
+        //leave an errormessage on stack
+        lua_pushstring(State, Pchar('could not find function named ' + Name));
+      end;
+    end
+    else
+    begin //we have to pop the args from stack
+      lua_pop(State, nArgs);
+      //leave an errormessage on stack
+      lua_pushstring(State, PChar('plugin paused'));
+    end;
+
+    if (not Result) and (ReportErrors) then
+      Log.LogError(lua_toString(State, -1), 'lua/' + sName);
+
+    if ShutDown then
+    begin // plugin indicates self shutdown
+      ShutDown := false;
+      Unload;
+      Result := false;
+    end
+  end
+  else
+  begin
+    Log.LogError('trying to call function of closed or not opened lua state', IfThen(HasRegistred, Name, Filename.ToUTF8));
+  end;
+end;
+
+{ removes all values from stack }
+procedure TLuaPlugin.ClearStack;
+begin
+  if (State <> nil) and (lua_gettop(State) > 0) then
+    lua_pop(State, lua_gettop(State));
+end;
+
+{ destroys the lua state, and frees as much mem as possible,
+  w/o destroying the class and important information }
+procedure TLuaPlugin.Unload;
+begin
+  if (State <> nil) then
+  begin
+    if (Status in [psRunning, psErrorOnRun]) then
+      CallFunctionByName('plugin_unload');
+
+    ClearStack;
+    lua_close(State);
+    State := nil; //don't forget to nil it ;)
+
+    LuaCore.UnHookByParent(iId);
+
+    if (sStatus = psRunning) then
+      sStatus := psClosed;
+  end;
+end;
+
+function TLuaPlugin_Register (L: Plua_State): integer; cdecl;
+  var
+    Id: integer;
+    P:  TLuaPlugin;
+    Name, Version, Author, Url: string;
+begin
+  if (lua_gettop(L) >= 2) then
+  begin // we got at least name and version
+    if (not lua_isNumber(L, lua_upvalueindex(1))) then
+      luaL_Error(L, PChar('upvalue missing'));
+
+    if (not lua_isString(L, 1)) then
+      luaL_ArgError(L, 1, 'string expected');
+
+    if (not lua_isString(L, 2)) then
+      luaL_ArgError(L, 1, 'string expected');
+
+    Id := lua_ToInteger(L, lua_upvalueindex(1));
+
+    //get version and name
+    Name    := lua_tostring(L, 1);
+    Version := lua_tostring(L, 2);
+
+    //get optional parameters
+    if (lua_isString(L, 3)) then //author
+      Author := lua_toString(L, 3)
+    else
+    begin
+      Author := 'unknown';
+    end;
+
+    // homepage
+    if (lua_isString(L, 4)) then
+      Url := lua_toString(L, 4)
+    else
+    begin
+      Url := '';
+    end;
+
+    //clear stack
+    if (lua_gettop(L) > 0) then
+      lua_pop(L, lua_gettop(L));
+
+    //call register
+    P := LuaCore.GetPluginById(Id);
+    if (P <> nil) then
+      P.Register(Name, Version, Author, Url)
+    else
+      luaL_error(L, PChar('wrong id in upstream'));
+
+    // remove function from global register
+    lua_pushnil(L);
+    lua_setglobal(L, PChar('register'));
+
+    // return true
+    Result := 1;
+    lua_pushboolean(L, true);  
+  end
+  else
+    luaL_error(L, PChar('not enough arguments, at least 2 expected. in TLuaPlugin_Register'));
+end;
+
+{ custom lua panic function
+  it writes error string to error.log and raises an ELuaException
+  that may be caught }
+function TLua_CustomPanic (L: Plua_State): integer; cdecl;
+  var
+    Msg: string;
+begin
+  if (lua_isString(L, -1)) then
+    Msg := lua_toString(L, -1)
+  else
+    Msg := 'undefined lua panic';
+
+  Log.LogError(Msg, 'lua');
+
+  raise ELuaException.Create(Msg);;
+
+  Result := 0;
+end;
+
+{ replacement for luas require function
+  can be called with more than one parameter to require
+  some modules at once. e.g.: require('math', 'Usdx.Log')
+  modules are loaded from right to left
+  unlike standard require the module tables are not returned
+  the standard require function in _require is called by
+  this function }
+function TLua_CustomRequire(L: PLua_State): integer; cdecl;
+begin
+  // no results
+  Result := 0;
+
+  // move through parameters
+  while (lua_getTop(L) >= 1) do
+  begin
+    // get luas require function
+    lua_getfield(L, LUA_GLOBALSINDEX, PChar('_require'));
+
+    // move it under the top param
+    lua_insert(L, -2);
+
+    // call it w/ next param (function + param are poped from stack)
+    lua_call(L, 1, 0);
+  end;
+end;
+
+end.
+\ No newline at end of file
diff --git a/src/lua/ULuaGl.pas b/src/lua/ULuaGl.pas
new file mode 100644
index 00000000..178853b6
--- /dev/null
+++ b/src/lua/ULuaGl.pas
@@ -0,0 +1,1513 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit ULuaGl;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+  SysUtils,
+  gl,
+  ULua;
+
+function luaopen_gl (L: Plua_State): Integer; cdecl;
+function ULuaGl_StringToEnum(Str: String): GLenum;
+
+{ lua lib functions }
+function ULuaGl_Begin(L: Plua_State): Integer; cdecl;
+function ULuaGl_BindTexture(L: Plua_State): Integer; cdecl;
+function ULuaGl_BlendFunc(L: Plua_State): Integer; cdecl;
+function ULuaGl_Clear(L: Plua_State): Integer; cdecl;
+function ULuaGl_ClearAccum(L: Plua_State): Integer; cdecl;
+function ULuaGl_ClearColor(L: Plua_State): Integer; cdecl;
+function ULuaGl_Color(L: Plua_State): Integer; cdecl;
+function ULuaGl_CullFace(L: Plua_State): Integer; cdecl;
+function ULuaGl_DepthFunc(L: Plua_State): Integer; cdecl;
+function ULuaGl_DepthRange(L: Plua_State): Integer; cdecl;
+function ULuaGl_Disable(L: Plua_State): Integer; cdecl;
+function ULuaGl_DisableClientState(L: Plua_State): Integer; cdecl;
+function ULuaGl_DrawBuffer(L: Plua_State): Integer; cdecl;
+function ULuaGl_Enable(L: Plua_State): Integer; cdecl;
+function ULuaGl_EnableClientState(L: Plua_State): Integer; cdecl;
+function ULuaGl_End(L: Plua_State): Integer; cdecl;
+function ULuaGl_EndList(L: Plua_State): Integer; cdecl;
+function ULuaGl_Finish(L: Plua_State): Integer; cdecl;
+function ULuaGl_Flush(L: Plua_State): Integer; cdecl;
+function ULuaGl_FrontFace(L: Plua_State): Integer; cdecl;
+function ULuaGl_InitNames(L: Plua_State): Integer; cdecl;
+function ULuaGl_LoadIdentity(L: Plua_State): Integer; cdecl;
+function ULuaGl_LogicOp(L: Plua_State): Integer; cdecl;
+function ULuaGl_MatrixMode(L: Plua_State): Integer; cdecl;
+function ULuaGl_Ortho(L: Plua_State): Integer; cdecl;
+function ULuaGl_PopAttrib(L: Plua_State): Integer; cdecl;
+function ULuaGl_PopClientAttrib(L: Plua_State): Integer; cdecl;
+function ULuaGl_PopMatrix(L: Plua_State): Integer; cdecl;
+function ULuaGl_PopName(L: Plua_State): Integer; cdecl;
+function ULuaGl_PushMatrix(L: Plua_State): Integer; cdecl;
+function ULuaGl_RasterPos(L: Plua_State): Integer; cdecl;
+function ULuaGl_ReadBuffer(L: Plua_State): Integer; cdecl;
+function ULuaGl_Rect(L: Plua_State): Integer; cdecl;
+function ULuaGl_Rotate(L: Plua_State): Integer; cdecl;
+function ULuaGl_Scale(L: Plua_State): Integer; cdecl;
+function ULuaGl_ShadeModel(L: Plua_State): Integer; cdecl;
+function ULuaGl_TexCoord(L: Plua_State): Integer; cdecl;
+function ULuaGl_Translate(L: Plua_State): Integer; cdecl;
+function ULuaGl_Vertex(L: Plua_State): Integer; cdecl;
+function ULuaGl_Viewport(L: Plua_State): Integer; cdecl;
+function ULuaGl_Dummy(L: Plua_State): Integer; cdecl;
+
+const
+  ULuaGl_Lib_f: array [0..40] of lual_reg = (
+   (name:'Begin';func:ULuaGl_Begin),
+   (name:'BindTexture';func:ULuaGl_BindTexture),
+   (name:'BlendFunc';func:ULuaGl_BlendFunc),
+   (name:'Clear';func:ULuaGl_Clear),
+   (name:'ClearAccum';func:ULuaGl_ClearAccum),
+   (name:'ClearColor';func:ULuaGl_ClearColor),
+   (name:'Color';func:ULuaGl_Color),
+   (name:'CullFace';func:ULuaGl_CullFace),
+   (name:'DepthFunc';func:ULuaGl_DepthFunc),
+   (name:'DepthRange';func:ULuaGl_DepthRange),
+   (name:'Disable';func:ULuaGl_Disable),
+   (name:'DisableClientState';func:ULuaGl_DisableClientState),
+   (name:'DrawBuffer';func:ULuaGl_DrawBuffer),
+   (name:'Enable';func:ULuaGl_Enable),
+   (name:'EnableClientState';func:ULuaGl_EnableClientState),
+   (name:'End';func:ULuaGl_End),
+   (name:'EndList';func:ULuaGl_EndList),
+   (name:'Finish';func:ULuaGl_Finish),
+   (name:'Flush';func:ULuaGl_Flush),
+   (name:'FrontFace';func:ULuaGl_FrontFace),
+   (name:'InitNames';func:ULuaGl_InitNames),
+   (name:'LoadIdentity';func:ULuaGl_LoadIdentity),
+   (name:'LogicOp';func:ULuaGl_LogicOp),
+   (name:'MatrixMode';func:ULuaGl_MatrixMode),
+   (name:'Ortho';func:ULuaGl_Ortho),
+   (name:'PopAttrib';func:ULuaGl_PopAttrib),
+   (name:'PopClientAttrib';func:ULuaGl_PopClientAttrib),
+   (name:'PopMatrix';func:ULuaGl_PopMatrix),
+   (name:'PopName';func:ULuaGl_PopName),
+   (name:'PushMatrix';func:ULuaGl_PushMatrix),
+   (name:'RasterPos';func:ULuaGl_RasterPos),
+   (name:'ReadBuffer';func:ULuaGl_ReadBuffer),
+   (name:'Rotate';func:ULuaGl_Rotate),
+   (name:'Rect';func:ULuaGl_Rect),
+   (name:'Scale';func:ULuaGl_Scale),
+   (name:'ShadeModel';func:ULuaGl_ShadeModel),
+   (name:'TexCoord';func:ULuaGl_TexCoord),
+   (name:'Translate';func:ULuaGl_Translate),
+   (name:'Vertex';func:ULuaGl_Vertex),
+   (name:'Viewport';func:ULuaGl_Viewport),
+   (name:nil;func:nil)
+   );
+
+implementation
+
+uses
+   ULog;
+
+type
+  TULuaGl_Enums = record
+    Text:       string;
+    Value:      GLenum;
+  end;
+const
+  ULuaGl_EnumERROR = $fffffffe;
+
+function ULuaGl_Begin(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.Begin''');
+
+  glBegin(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_BindTexture(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.BindTexture''');
+
+  glBindTexture(e,lual_checkinteger(L,2));
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_BlendFunc(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+  f : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+  f := ULuaGl_StringToEnum(lual_checkstring(L,2));
+
+  if (e = ULuaGl_EnumERROR) or (f = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.BlendFunc''');
+
+  glBlendFunc(e,f);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_Clear(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.Clear''');
+
+  glClear(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_ClearAccum(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) then
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+
+  if (lua_istable(L, 1) and (lua_objlen(L,1) = 4)) or (lua_gettop(L) = 4) then
+    glClearAccum(lual_checknumber(L,-4),
+                 lual_checknumber(L,-3),
+                 lual_checknumber(L,-2),
+                 lual_checknumber(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.ClearAccum''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_ClearColor(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) then
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+
+  if (lua_istable(L, 1) and (lua_objlen(L,1) = 4)) or (lua_gettop(L) = 4) then
+    glClearColor(lual_checknumber(L,-4),
+                 lual_checknumber(L,-3),
+                 lual_checknumber(L,-2),
+                 lual_checknumber(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.ClearColor''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_Color(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) then
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+
+  if (lua_istable(L, 1) and (lua_objlen(L,1) = 3)) or (lua_gettop(L) = 3) then
+    glColor3d(GLdouble(lual_checknumber(L,-3)),
+              GLdouble(lual_checknumber(L,-2)),
+              GLdouble(lual_checknumber(L,-1)))
+  else if (lua_istable(L, 1) and (lua_objlen(L,1) = 4)) or (lua_gettop(L) = 4) then
+    glColor4d(GLdouble(lual_checknumber(L,-4)),
+              GLdouble(lual_checknumber(L,-3)),
+              GLdouble(lual_checknumber(L,-2)),
+              GLdouble(lual_checknumber(L,-1)))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.Color''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_CullFace(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.CullFace''');
+
+  glCullFace(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_DepthFunc(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.DepthFunc''');
+
+  glDepthFunc(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_DepthRange(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) then
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+
+  if  (lua_istable(L, 1) and (lua_objlen(L,1) = 2))
+  or  (lua_gettop(L) = 2) then
+    glDepthRange(lual_checkinteger(L,-2),
+                 lual_checkinteger(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.DepthRange''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_Disable(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.Disable''');
+
+  glDisable(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_DisableClientState(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.DisableClientState''');
+
+  glDisableClientState(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_DrawBuffer(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.DrawBuffer''');
+
+  glDrawBuffer(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_Enable(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.Enable''');
+
+  glEnable(e);
+  result:=0; // number of results
+end;
+
+function ULuaGl_EnableClientState(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.EnableClientState''');
+
+  glEnableClientState(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_End(L: Plua_State): Integer; cdecl;
+begin
+  glEnd();
+  result:=0; // number of results
+end;
+
+function ULuaGl_EndList(L: Plua_State): Integer; cdecl;
+begin
+  glEndList();
+  result:=0; // number of results
+end;
+
+function ULuaGl_Finish(L: Plua_State): Integer; cdecl;
+begin
+  glFinish();
+  result:=0; // number of results
+end;
+
+function ULuaGl_Flush(L: Plua_State): Integer; cdecl;
+begin
+  glFlush();
+  result:=0; // number of results
+end;
+
+function ULuaGl_FrontFace(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.FrontFace''');
+
+  glFrontFace(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_InitNames(L: Plua_State): Integer; cdecl;
+begin
+  glInitNames();
+  result:=0; // number of results
+end;
+
+function ULuaGl_LoadIdentity(L: Plua_State): Integer; cdecl;
+begin
+  glLoadIdentity();
+  result:=0; // number of results
+end;
+
+function ULuaGl_LogicOp(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.LogicOp''');
+
+  glLogicOp(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_MatrixMode(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.MatrixMode''');
+
+  glMatrixMode(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_Ortho(L: Plua_State): Integer; cdecl;
+begin
+  if  (lua_gettop(L) = 6) then
+    glOrtho(lual_checkinteger(L,-6),
+            lual_checkinteger(L,-5),
+            lual_checkinteger(L,-4),
+            lual_checkinteger(L,-3),
+            lual_checkinteger(L,-2),
+            lual_checkinteger(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.Ortho''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_PopAttrib(L: Plua_State): Integer; cdecl;
+begin
+  glPopAttrib();
+  result:=0; // number of results
+end;
+
+function ULuaGl_PopClientAttrib(L: Plua_State): Integer; cdecl;
+begin
+  glPopClientAttrib();
+  result:=0; // number of results
+end;
+
+function ULuaGl_PopMatrix(L: Plua_State): Integer; cdecl;
+begin
+  glPopMatrix();
+  result:=0; // number of results
+end;
+
+function ULuaGl_PopName(L: Plua_State): Integer; cdecl;
+begin
+  glPopName();
+  result:=0; // number of results
+end;
+
+function ULuaGl_PushMatrix(L: Plua_State): Integer; cdecl;
+begin
+  glPopName();
+  result:=0; // number of results
+end;
+
+function ULuaGl_RasterPos(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) then
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+
+  if (lua_istable(L, 1) and (lua_objlen(L,1) = 2)) or (lua_gettop(L) = 2) then
+    glRasterPos2d(GLdouble(lual_checknumber(L,-2)),
+                  GLdouble(lual_checknumber(L,-1)))
+  else if (lua_istable(L, 1) and (lua_objlen(L,1) = 3)) or (lua_gettop(L) = 3) then
+    glRasterPos3d(GLdouble(lual_checknumber(L,-3)),
+                  GLdouble(lual_checknumber(L,-2)),
+                  GLdouble(lual_checknumber(L,-1)))
+  else if (lua_istable(L, 1) and (lua_objlen(L,1) = 4)) or (lua_gettop(L) = 4) then
+    glRasterPos4d(GLdouble(lual_checknumber(L,-4)),
+                  GLdouble(lual_checknumber(L,-3)),
+                  GLdouble(lual_checknumber(L,-2)),
+                  GLdouble(lual_checknumber(L,-1)))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.RasterPos''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_ReadBuffer(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.ReadBuffer''');
+
+  glReadBuffer(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_Rect(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) and lua_istable(L, 2) then
+  begin
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+    for i := 1 to lua_objlen(L,2) do
+      lua_rawgeti(L,2,i);
+  end;
+
+  if  (lua_istable(L, 1) and (lua_objlen(L,1) = 2))
+  and (lua_istable(L, 2) and (lua_objlen(L,2) = 2))
+  or  (lua_gettop(L) = 4) then
+    glRectD(lual_checknumber(L,-4),
+            lual_checknumber(L,-3),
+            lual_checknumber(L,-2),
+            lual_checknumber(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.Rect''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_Rotate(L: Plua_State): Integer; cdecl;
+begin
+  if  (lua_gettop(L) = 3) then
+    glRotated(lual_checkinteger(L,-4),
+              lual_checkinteger(L,-3),
+              lual_checkinteger(L,-2),
+              lual_checkinteger(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.Rotate''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_Scale(L: Plua_State): Integer; cdecl;
+begin
+  if  (lua_gettop(L) = 3) then
+    glScaled(lual_checkinteger(L,-3),
+             lual_checkinteger(L,-2),
+             lual_checkinteger(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.Scale''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_ShadeModel(L: Plua_State): Integer; cdecl;
+var
+  e : GLenum;
+begin
+  e := ULuaGl_StringToEnum(lual_checkstring(L,1));
+
+  if (e = ULuaGl_EnumERROR) then
+    luaL_error(L, 'incorrect string argument to function ''gl.ShadeModel''');
+
+  glShadeModel(e);
+
+  result:=0; // number of results
+end;
+
+function ULuaGl_TexCoord(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) then
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+
+  if (lua_istable(L, 1) and (lua_objlen(L,1) = 1)) or (lua_gettop(L) = 1) then
+    glTexCoord1d(GLdouble(lual_checknumber(L,-1)))
+  else if (lua_istable(L, 1) and (lua_objlen(L,1) = 2)) or (lua_gettop(L) = 2) then
+    glTexCoord2d(GLdouble(lual_checknumber(L,-2)),
+                 GLdouble(lual_checknumber(L,-1)))
+  else if (lua_istable(L, 1) and (lua_objlen(L,1) = 3)) or (lua_gettop(L) = 3) then
+    glTexCoord3d(GLdouble(lual_checknumber(L,-3)),
+                 GLdouble(lual_checknumber(L,-2)),
+                 GLdouble(lual_checknumber(L,-1)))
+  else if (lua_istable(L, 1) and (lua_objlen(L,1) = 4)) or (lua_gettop(L) = 4) then
+    glTexCoord4d(GLdouble(lual_checknumber(L,-4)),
+                 GLdouble(lual_checknumber(L,-3)),
+                 GLdouble(lual_checknumber(L,-2)),
+                 GLdouble(lual_checknumber(L,-1)))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.TexCoord''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_Translate(L: Plua_State): Integer; cdecl;
+begin
+  if  (lua_gettop(L) = 3) then
+    glTranslated(lual_checkinteger(L,-3),
+                 lual_checkinteger(L,-2),
+                 lual_checkinteger(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.Translate''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_Vertex(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) then
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+
+  if (lua_istable(L, 1) and (lua_objlen(L,1) = 2)) or (lua_gettop(L) = 2) then
+    glVertex2d(GLdouble(lual_checknumber(L,-2)),
+               GLdouble(lual_checknumber(L,-1)))
+  else if (lua_istable(L, 1) and (lua_objlen(L,1) = 3)) or (lua_gettop(L) = 3) then
+    glVertex3d(GLdouble(lual_checknumber(L,-3)),
+               GLdouble(lual_checknumber(L,-2)),
+               GLdouble(lual_checknumber(L,-1)))
+  else if (lua_istable(L, 1) and (lua_objlen(L,1) = 4)) or (lua_gettop(L) = 4) then
+    glVertex4d(GLdouble(lual_checknumber(L,-4)),
+               GLdouble(lual_checknumber(L,-3)),
+               GLdouble(lual_checknumber(L,-2)),
+               GLdouble(lual_checknumber(L,-1)))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.Vertex''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_Viewport(L: Plua_State): Integer; cdecl;
+var
+  i: Integer;
+begin
+  if lua_istable(L, 1) and lua_istable(L, 2) then
+  begin
+    for i := 1 to lua_objlen(L,1) do
+      lua_rawgeti(L,1,i);
+    for i := 1 to lua_objlen(L,2) do
+      lua_rawgeti(L,2,i);
+  end;
+
+  if  (lua_istable(L, 1) and (lua_objlen(L,1) = 2))
+  and (lua_istable(L, 2) and (lua_objlen(L,2) = 2))
+  or  (lua_gettop(L) = 4) then
+    glViewport(lual_checkinteger(L,-4),
+               lual_checkinteger(L,-3),
+               lual_checkinteger(L,-2),
+               lual_checkinteger(L,-1))
+  else
+    luaL_error(L, 'incorrect argument to function ''gl.Viewport''');
+  result:=0; // number of results
+end;
+
+function ULuaGl_Dummy(L: Plua_State): Integer; cdecl;
+begin
+  result:=0; // number of results
+end;
+
+function luaopen_gl (L: Plua_State): Integer; cdecl;
+begin
+    luaL_register(L,'gl',@ULuaGl_Lib_f[0]);
+    result:=1;
+end;
+
+(*
+  glAccum: procedure(op: GLenum; value: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAlphaFunc: procedure(func: GLenum; ref: GLclampf); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glAreTexturesResident: function (n: GLsizei; const textures: PGLuint; residences: PGLboolean): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glArrayElement: procedure(i: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glBitmap: procedure (width, height: GLsizei; xorig, yorig: GLfloat; xmove, ymove: GLfloat; const bitmap: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCallList: procedure(list: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCallLists: procedure(n: GLsizei; atype: GLenum; const lists: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClearDepth: procedure(depth: GLclampd); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClearIndex: procedure(c: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClearStencil: procedure(s: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glClipPlane: procedure(plane: GLenum; const equation: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  glColorMask: procedure(red, green, blue, alpha: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorMaterial: procedure(face, mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glColorPointer: procedure(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyPixels: procedure(x, y: GLint; width, height: GLsizei; atype: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexImage1D: procedure (target: GLenum; level: GLint; internalFormat: GLenum; x, y: GLint; width: GLsizei; border: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexImage2D: procedure(target: GLenum; level: GLint; internalFormat: GLenum; x, y: GLint; width, height: GLsizei; border: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexSubImage1D: procedure(target: GLenum; level, xoffset, x, y: GLint; width: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glCopyTexSubImage2D: procedure(target: GLenum; level, xoffset, yoffset, x, y: GLint; width, height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteLists: procedure(list: GLuint; range: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDeleteTextures: procedure(n: GLsizei; const textures: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDepthMask: procedure(flag: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawArrays: procedure(mode: GLenum; first: GLint; count: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawElements: procedure(mode: GLenum; count: GLsizei; atype: GLenum; const indices: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glDrawPixels: procedure(width, height: GLsizei; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEdgeFlag: procedure(flag: GLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEdgeFlagPointer: procedure(stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEdgeFlagv: procedure(const flag: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  glEvalCoord1d: procedure(u: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord1dv: procedure(const u: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord1f: procedure(u: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord1fv: procedure(const u: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord2d: procedure(u, v: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord2dv: procedure(const u: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord2f: procedure(u, v: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalCoord2fv: procedure(const u: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  glEvalMesh1: procedure(mode: GLenum; i1, i2: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalMesh2: procedure(mode: GLenum; i1, i2, j1, j2: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalPoint1: procedure(i: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glEvalPoint2: procedure(i, j: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFeedbackBuffer: procedure(size: GLsizei; atype: GLenum; buffer: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogf: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogfv: procedure(pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogi: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFogiv: procedure(pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glFrustum: procedure(left, right, bottom, top, zNear, zFar: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenLists: function(range: GLsizei): GLuint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGenTextures: procedure(n: GLsizei; textures: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetBooleanv: procedure(pname: GLenum; params: PGLboolean); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetClipPlane: procedure(plane: GLenum; equation: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetDoublev: procedure(pname: GLenum; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+//  glGetError: function: GLenum; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetFloatv: procedure(pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetIntegerv: procedure(pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetLightfv: procedure(light, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetLightiv: procedure(light, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapdv: procedure(target, query: GLenum; v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapfv: procedure(target, query: GLenum; v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMapiv: procedure(target, query: GLenum; v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMaterialfv: procedure(face, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetMaterialiv: procedure(face, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPixelMapfv: procedure(map: GLenum; values: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPixelMapuiv: procedure(map: GLenum; values: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPixelMapusv: procedure(map: GLenum; values: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPointerv: procedure(pname: GLenum; params: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetPolygonStipple: procedure(mask: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+/  glGetString: function(name: GLenum): PChar; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexEnvfv: procedure(target, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexEnviv: procedure(target, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexGendv: procedure(coord, pname: GLenum; params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexGenfv: procedure(coord, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexGeniv: procedure(coord, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexImage: procedure(target: GLenum; level: GLint; format: GLenum; atype: GLenum; pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexLevelParameterfv: procedure(target: GLenum; level: GLint; pname: GLenum; params: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexLevelParameteriv: procedure(target: GLenum; level: GLint; pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexParameterfv: procedure(target, pname: GLenum; params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glGetTexParameteriv: procedure(target, pname: GLenum; params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glHint: procedure(target, mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexMask: procedure(mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  glIndexPointer: procedure(atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexd: procedure(c: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexdv: procedure(const c: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexf: procedure(c: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexfv: procedure(const c: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexi: procedure(c: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexiv: procedure(const c: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexs: procedure(c: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexsv: procedure(const c: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexub: procedure(c: GLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIndexubv: procedure(const c: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  glInterleavedArrays: procedure(format: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+/  glIsEnabled: function(cap: GLenum): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsList: function(list: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glIsTexture: function(texture: GLuint): GLboolean; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightModelf: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightModelfv: procedure(pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightModeli: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightModeliv: procedure(pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightf: procedure(light, pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightfv: procedure(light, pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLighti: procedure(light, pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLightiv: procedure(light, pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLineStipple: procedure(factor: GLint; pattern: GLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLineWidth: procedure(width: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glListBase: procedure(base: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadMatrixd: procedure(const m: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadMatrixf: procedure(const m: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glLoadName: procedure(name: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMap1d: procedure(target: GLenum; u1, u2: GLdouble; stride, order: GLint; const points: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMap1f: procedure(target: GLenum; u1, u2: GLfloat; stride, order: GLint; const points: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMap2d: procedure(target: GLenum; u1, u2: GLdouble; ustride, uorder: GLint; v1, v2: GLdouble; vstride, vorder: GLint; const points: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMap2f: procedure(target: GLenum; u1, u2: GLfloat; ustride, uorder: GLint; v1, v2: GLfloat; vstride, vorder: GLint; const points: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapGrid1d: procedure(un: GLint; u1, u2: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapGrid1f: procedure(un: GLint; u1, u2: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapGrid2d: procedure(un: GLint; u1, u2: GLdouble; vn: GLint; v1, v2: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMapGrid2f: procedure(un: GLint; u1, u2: GLfloat; vn: GLint; v1, v2: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMaterialf: procedure(face, pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMaterialfv: procedure(face, pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMateriali: procedure(face, pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMaterialiv: procedure(face, pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultMatrixd: procedure(const m: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glMultMatrixf: procedure(const m: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNewList: procedure(list: GLuint; mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3b: procedure(nx, ny, nz: GLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3bv: procedure(const v: PGLbyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3d: procedure(nx, ny, nz: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3dv: procedure(const v: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3f: procedure(nx, ny, nz: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3fv: procedure(const v: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3i: procedure(nx, ny, nz: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3iv: procedure(const v: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3s: procedure(nx, ny, nz: GLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormal3sv: procedure(const v: PGLshort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glNormalPointer: procedure(atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPassThrough: procedure(token: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelMapfv: procedure(map: GLenum; mapsize: GLsizei; const values: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelMapuiv: procedure(map: GLenum; mapsize: GLsizei; const values: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelMapusv: procedure(map: GLenum; mapsize: GLsizei; const values: PGLushort); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelStoref: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelStorei: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelTransferf: procedure(pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelTransferi: procedure(pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPixelZoom: procedure(xfactor, yfactor: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPointSize: procedure(size: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPolygonMode: procedure(face, mode: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPolygonOffset: procedure(factor, units: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPolygonStipple: procedure(const mask: PGLubyte); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPrioritizeTextures: procedure(n: GLsizei; const textures: PGLuint; const priorities: PGLclampf); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPushAttrib: procedure(mask: GLbitfield); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPushClientAttrib: procedure(mask: GLbitfield); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glPushName: procedure(name: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glReadPixels: procedure(x, y: GLint; width, height: GLsizei; format, atype: GLenum; pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  glRenderMode: function(mode: GLint): GLint; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glScissor: procedure(x, y: GLint; width, height: GLsizei); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glSelectBuffer: procedure(size: GLsizei; buffer: PGLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilFunc: procedure(func: GLenum; ref: GLint; mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilMask: procedure(mask: GLuint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glStencilOp: procedure(fail, zfail, zpass: GLenum); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+
+  glTexCoordPointer: procedure(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexEnvf: procedure(target: GLenum; pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexEnvfv: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexEnvi: procedure(target: GLenum; pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexEnviv: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGend: procedure(coord: GLenum; pname: GLenum; param: GLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGendv: procedure(coord: GLenum; pname: GLenum; const params: PGLdouble); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGenf: procedure(coord: GLenum; pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGenfv: procedure(coord: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGeni: procedure(coord: GLenum; pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexGeniv: procedure(coord: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexImage1D: procedure(target: GLenum; level, internalformat: GLint; width: GLsizei; border: GLint; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexImage2D: procedure(target: GLenum; level, internalformat: GLint; width, height: GLsizei; border: GLint; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexParameterf: procedure(target: GLenum; pname: GLenum; param: GLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexParameterfv: procedure(target: GLenum; pname: GLenum; const params: PGLfloat); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexParameteri: procedure(target: GLenum; pname: GLenum; param: GLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexParameteriv: procedure(target: GLenum; pname: GLenum; const params: PGLint); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexSubImage1D: procedure(target: GLenum; level, xoffset: GLint; width: GLsizei; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glTexSubImage2D: procedure(target: GLenum; level, xoffset, yoffset: GLint; width, height: GLsizei; format, atype: GLenum; const pixels: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  glVertexPointer: procedure(size: GLint; atype: GLenum; stride: GLsizei; const pointer: Pointer); {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  {$IFDEF WINDOWS}
+  ChoosePixelFormat: function(DC: HDC; p2: PPixelFormatDescriptor): Integer; {$IFDEF WINDOWS}stdcall;{$ELSE}cdecl;{$ENDIF}
+  {$ENDIF}
+  *)
+
+  const
+  ULuaGl_Enum: array [0..579] of TULuaGl_Enums = (
+    (Text:'GL_VERSION_1_1';Value:GL_VERSION_1_1),
+    (Text:'GL_ACCUM';Value:GL_ACCUM),
+    (Text:'GL_LOAD';Value:GL_LOAD),
+    (Text:'GL_RETURN';Value:GL_RETURN),
+    (Text:'GL_MULT';Value:GL_MULT),
+    (Text:'GL_ADD';Value:GL_ADD),
+    (Text:'GL_NEVER';Value:GL_NEVER),
+    (Text:'GL_LESS';Value:GL_LESS),
+    (Text:'GL_EQUAL';Value:GL_EQUAL),
+    (Text:'GL_LEQUAL';Value:GL_LEQUAL),
+    (Text:'GL_GREATER';Value:GL_GREATER),
+    (Text:'GL_NOTEQUAL';Value:GL_NOTEQUAL),
+    (Text:'GL_GEQUAL';Value:GL_GEQUAL),
+    (Text:'GL_ALWAYS';Value:GL_ALWAYS),
+    (Text:'GL_CURRENT_BIT';Value:GL_CURRENT_BIT),
+    (Text:'GL_POINT_BIT';Value:GL_POINT_BIT),
+    (Text:'GL_LINE_BIT';Value:GL_LINE_BIT),
+    (Text:'GL_POLYGON_BIT';Value:GL_POLYGON_BIT),
+    (Text:'GL_POLYGON_STIPPLE_BIT';Value:GL_POLYGON_STIPPLE_BIT),
+    (Text:'GL_PIXEL_MODE_BIT';Value:GL_PIXEL_MODE_BIT),
+    (Text:'GL_LIGHTING_BIT';Value:GL_LIGHTING_BIT),
+    (Text:'GL_FOG_BIT';Value:GL_FOG_BIT),
+    (Text:'GL_DEPTH_BUFFER_BIT';Value:GL_DEPTH_BUFFER_BIT),
+    (Text:'GL_ACCUM_BUFFER_BIT';Value:GL_ACCUM_BUFFER_BIT),
+    (Text:'GL_STENCIL_BUFFER_BIT';Value:GL_STENCIL_BUFFER_BIT),
+    (Text:'GL_VIEWPORT_BIT';Value:GL_VIEWPORT_BIT),
+    (Text:'GL_TRANSFORM_BIT';Value:GL_TRANSFORM_BIT),
+    (Text:'GL_ENABLE_BIT';Value:GL_ENABLE_BIT),
+    (Text:'GL_COLOR_BUFFER_BIT';Value:GL_COLOR_BUFFER_BIT),
+    (Text:'GL_HINT_BIT';Value:GL_HINT_BIT),
+    (Text:'GL_EVAL_BIT';Value:GL_EVAL_BIT),
+    (Text:'GL_LIST_BIT';Value:GL_LIST_BIT),
+    (Text:'GL_TEXTURE_BIT';Value:GL_TEXTURE_BIT),
+    (Text:'GL_SCISSOR_BIT';Value:GL_SCISSOR_BIT),
+    (Text:'GL_ALL_ATTRIB_BITS';Value:GL_ALL_ATTRIB_BITS),
+    (Text:'GL_POINTS';Value:GL_POINTS),
+    (Text:'GL_LINES';Value:GL_LINES),
+    (Text:'GL_LINE_LOOP';Value:GL_LINE_LOOP),
+    (Text:'GL_LINE_STRIP';Value:GL_LINE_STRIP),
+    (Text:'GL_TRIANGLES';Value:GL_TRIANGLES),
+    (Text:'GL_TRIANGLE_STRIP';Value:GL_TRIANGLE_STRIP),
+    (Text:'GL_TRIANGLE_FAN';Value:GL_TRIANGLE_FAN),
+    (Text:'GL_QUADS';Value:GL_QUADS),
+    (Text:'GL_QUAD_STRIP';Value:GL_QUAD_STRIP),
+    (Text:'GL_POLYGON';Value:GL_POLYGON),
+    (Text:'GL_ZERO';Value:GL_ZERO),
+    (Text:'GL_ONE';Value:GL_ONE),
+    (Text:'GL_SRC_COLOR';Value:GL_SRC_COLOR),
+    (Text:'GL_ONE_MINUS_SRC_COLOR';Value:GL_ONE_MINUS_SRC_COLOR),
+    (Text:'GL_SRC_ALPHA';Value:GL_SRC_ALPHA),
+    (Text:'GL_ONE_MINUS_SRC_ALPHA';Value:GL_ONE_MINUS_SRC_ALPHA),
+    (Text:'GL_DST_ALPHA';Value:GL_DST_ALPHA),
+    (Text:'GL_ONE_MINUS_DST_ALPHA';Value:GL_ONE_MINUS_DST_ALPHA),
+    (Text:'GL_DST_COLOR';Value:GL_DST_COLOR),
+    (Text:'GL_ONE_MINUS_DST_COLOR';Value:GL_ONE_MINUS_DST_COLOR),
+    (Text:'GL_SRC_ALPHA_SATURATE';Value:GL_SRC_ALPHA_SATURATE),
+    (Text:'GL_TRUE';Value:GL_TRUE),
+    (Text:'GL_FALSE';Value:GL_FALSE),
+    (Text:'GL_CLIP_PLANE0';Value:GL_CLIP_PLANE0),
+    (Text:'GL_CLIP_PLANE1';Value:GL_CLIP_PLANE1),
+    (Text:'GL_CLIP_PLANE2';Value:GL_CLIP_PLANE2),
+    (Text:'GL_CLIP_PLANE3';Value:GL_CLIP_PLANE3),
+    (Text:'GL_CLIP_PLANE4';Value:GL_CLIP_PLANE4),
+    (Text:'GL_CLIP_PLANE5';Value:GL_CLIP_PLANE5),
+    (Text:'GL_BYTE';Value:GL_BYTE),
+    (Text:'GL_UNSIGNED_BYTE';Value:GL_UNSIGNED_BYTE),
+    (Text:'GL_SHORT';Value:GL_SHORT),
+    (Text:'GL_UNSIGNED_SHORT';Value:GL_UNSIGNED_SHORT),
+    (Text:'GL_INT';Value:GL_INT),
+    (Text:'GL_UNSIGNED_INT';Value:GL_UNSIGNED_INT),
+    (Text:'GL_FLOAT';Value:GL_FLOAT),
+    (Text:'GL_2_BYTES';Value:GL_2_BYTES),
+    (Text:'GL_3_BYTES';Value:GL_3_BYTES),
+    (Text:'GL_4_BYTES';Value:GL_4_BYTES),
+    (Text:'GL_DOUBLE';Value:GL_DOUBLE),
+    (Text:'GL_NONE';Value:GL_NONE),
+    (Text:'GL_FRONT_LEFT';Value:GL_FRONT_LEFT),
+    (Text:'GL_FRONT_RIGHT';Value:GL_FRONT_RIGHT),
+    (Text:'GL_BACK_LEFT';Value:GL_BACK_LEFT),
+    (Text:'GL_BACK_RIGHT';Value:GL_BACK_RIGHT),
+    (Text:'GL_FRONT';Value:GL_FRONT),
+    (Text:'GL_BACK';Value:GL_BACK),
+    (Text:'GL_LEFT';Value:GL_LEFT),
+    (Text:'GL_RIGHT';Value:GL_RIGHT),
+    (Text:'GL_FRONT_AND_BACK';Value:GL_FRONT_AND_BACK),
+    (Text:'GL_AUX0';Value:GL_AUX0),
+    (Text:'GL_AUX1';Value:GL_AUX1),
+    (Text:'GL_AUX2';Value:GL_AUX2),
+    (Text:'GL_AUX3';Value:GL_AUX3),
+    (Text:'GL_NO_ERROR';Value:GL_NO_ERROR),
+    (Text:'GL_INVALID_ENUM';Value:GL_INVALID_ENUM),
+    (Text:'GL_INVALID_VALUE';Value:GL_INVALID_VALUE),
+    (Text:'GL_INVALID_OPERATION';Value:GL_INVALID_OPERATION),
+    (Text:'GL_STACK_OVERFLOW';Value:GL_STACK_OVERFLOW),
+    (Text:'GL_STACK_UNDERFLOW';Value:GL_STACK_UNDERFLOW),
+    (Text:'GL_OUT_OF_MEMORY';Value:GL_OUT_OF_MEMORY),
+    (Text:'GL_2D';Value:GL_2D),
+    (Text:'GL_3D';Value:GL_3D),
+    (Text:'GL_3D_COLOR';Value:GL_3D_COLOR),
+    (Text:'GL_3D_COLOR_TEXTURE';Value:GL_3D_COLOR_TEXTURE),
+    (Text:'GL_4D_COLOR_TEXTURE';Value:GL_4D_COLOR_TEXTURE),
+    (Text:'GL_PASS_THROUGH_TOKEN';Value:GL_PASS_THROUGH_TOKEN),
+    (Text:'GL_POINT_TOKEN';Value:GL_POINT_TOKEN),
+    (Text:'GL_LINE_TOKEN';Value:GL_LINE_TOKEN),
+    (Text:'GL_POLYGON_TOKEN';Value:GL_POLYGON_TOKEN),
+    (Text:'GL_BITMAP_TOKEN';Value:GL_BITMAP_TOKEN),
+    (Text:'GL_DRAW_PIXEL_TOKEN';Value:GL_DRAW_PIXEL_TOKEN),
+    (Text:'GL_COPY_PIXEL_TOKEN';Value:GL_COPY_PIXEL_TOKEN),
+    (Text:'GL_LINE_RESET_TOKEN';Value:GL_LINE_RESET_TOKEN),
+    (Text:'GL_EXP';Value:GL_EXP),
+    (Text:'GL_EXP2';Value:GL_EXP2),
+    (Text:'GL_CW';Value:GL_CW),
+    (Text:'GL_CCW';Value:GL_CCW),
+    (Text:'GL_COEFF';Value:GL_COEFF),
+    (Text:'GL_ORDER';Value:GL_ORDER),
+    (Text:'GL_DOMAIN';Value:GL_DOMAIN),
+    (Text:'GL_CURRENT_COLOR';Value:GL_CURRENT_COLOR),
+    (Text:'GL_CURRENT_INDEX';Value:GL_CURRENT_INDEX),
+    (Text:'GL_CURRENT_NORMAL';Value:GL_CURRENT_NORMAL),
+    (Text:'GL_CURRENT_TEXTURE_COORDS';Value:GL_CURRENT_TEXTURE_COORDS),
+    (Text:'GL_CURRENT_RASTER_COLOR';Value:GL_CURRENT_RASTER_COLOR),
+    (Text:'GL_CURRENT_RASTER_INDEX';Value:GL_CURRENT_RASTER_INDEX),
+    (Text:'GL_CURRENT_RASTER_TEXTURE_COORDS';Value:GL_CURRENT_RASTER_TEXTURE_COORDS),
+    (Text:'GL_CURRENT_RASTER_POSITION';Value:GL_CURRENT_RASTER_POSITION),
+    (Text:'GL_CURRENT_RASTER_POSITION_VALID';Value:GL_CURRENT_RASTER_POSITION_VALID),
+    (Text:'GL_CURRENT_RASTER_DISTANCE';Value:GL_CURRENT_RASTER_DISTANCE),
+    (Text:'GL_POINT_SMOOTH';Value:GL_POINT_SMOOTH),
+    (Text:'GL_POINT_SIZE';Value:GL_POINT_SIZE),
+    (Text:'GL_POINT_SIZE_RANGE';Value:GL_POINT_SIZE_RANGE),
+    (Text:'GL_POINT_SIZE_GRANULARITY';Value:GL_POINT_SIZE_GRANULARITY),
+    (Text:'GL_LINE_SMOOTH';Value:GL_LINE_SMOOTH),
+    (Text:'GL_LINE_WIDTH';Value:GL_LINE_WIDTH),
+    (Text:'GL_LINE_WIDTH_RANGE';Value:GL_LINE_WIDTH_RANGE),
+    (Text:'GL_LINE_WIDTH_GRANULARITY';Value:GL_LINE_WIDTH_GRANULARITY),
+    (Text:'GL_LINE_STIPPLE';Value:GL_LINE_STIPPLE),
+    (Text:'GL_LINE_STIPPLE_PATTERN';Value:GL_LINE_STIPPLE_PATTERN),
+    (Text:'GL_LINE_STIPPLE_REPEAT';Value:GL_LINE_STIPPLE_REPEAT),
+    (Text:'GL_LIST_MODE';Value:GL_LIST_MODE),
+    (Text:'GL_MAX_LIST_NESTING';Value:GL_MAX_LIST_NESTING),
+    (Text:'GL_LIST_BASE';Value:GL_LIST_BASE),
+    (Text:'GL_LIST_INDEX';Value:GL_LIST_INDEX),
+    (Text:'GL_POLYGON_MODE';Value:GL_POLYGON_MODE),
+    (Text:'GL_POLYGON_SMOOTH';Value:GL_POLYGON_SMOOTH),
+    (Text:'GL_POLYGON_STIPPLE';Value:GL_POLYGON_STIPPLE),
+    (Text:'GL_EDGE_FLAG';Value:GL_EDGE_FLAG),
+    (Text:'GL_CULL_FACE';Value:GL_CULL_FACE),
+    (Text:'GL_CULL_FACE_MODE';Value:GL_CULL_FACE_MODE),
+    (Text:'GL_FRONT_FACE';Value:GL_FRONT_FACE),
+    (Text:'GL_LIGHTING';Value:GL_LIGHTING),
+    (Text:'GL_LIGHT_MODEL_LOCAL_VIEWER';Value:GL_LIGHT_MODEL_LOCAL_VIEWER),
+    (Text:'GL_LIGHT_MODEL_TWO_SIDE';Value:GL_LIGHT_MODEL_TWO_SIDE),
+    (Text:'GL_LIGHT_MODEL_AMBIENT';Value:GL_LIGHT_MODEL_AMBIENT),
+    (Text:'GL_SHADE_MODEL';Value:GL_SHADE_MODEL),
+    (Text:'GL_COLOR_MATERIAL_FACE';Value:GL_COLOR_MATERIAL_FACE),
+    (Text:'GL_COLOR_MATERIAL_PARAMETER';Value:GL_COLOR_MATERIAL_PARAMETER),
+    (Text:'GL_COLOR_MATERIAL';Value:GL_COLOR_MATERIAL),
+    (Text:'GL_FOG';Value:GL_FOG),
+    (Text:'GL_FOG_INDEX';Value:GL_FOG_INDEX),
+    (Text:'GL_FOG_DENSITY';Value:GL_FOG_DENSITY),
+    (Text:'GL_FOG_START';Value:GL_FOG_START),
+    (Text:'GL_FOG_END';Value:GL_FOG_END),
+    (Text:'GL_FOG_MODE';Value:GL_FOG_MODE),
+    (Text:'GL_FOG_COLOR';Value:GL_FOG_COLOR),
+    (Text:'GL_DEPTH_RANGE';Value:GL_DEPTH_RANGE),
+    (Text:'GL_DEPTH_TEST';Value:GL_DEPTH_TEST),
+    (Text:'GL_DEPTH_WRITEMASK';Value:GL_DEPTH_WRITEMASK),
+    (Text:'GL_DEPTH_CLEAR_VALUE';Value:GL_DEPTH_CLEAR_VALUE),
+    (Text:'GL_DEPTH_FUNC';Value:GL_DEPTH_FUNC),
+    (Text:'GL_ACCUM_CLEAR_VALUE';Value:GL_ACCUM_CLEAR_VALUE),
+    (Text:'GL_STENCIL_TEST';Value:GL_STENCIL_TEST),
+    (Text:'GL_STENCIL_CLEAR_VALUE';Value:GL_STENCIL_CLEAR_VALUE),
+    (Text:'GL_STENCIL_FUNC';Value:GL_STENCIL_FUNC),
+    (Text:'GL_STENCIL_VALUE_MASK';Value:GL_STENCIL_VALUE_MASK),
+    (Text:'GL_STENCIL_FAIL';Value:GL_STENCIL_FAIL),
+    (Text:'GL_STENCIL_PASS_DEPTH_FAIL';Value:GL_STENCIL_PASS_DEPTH_FAIL),
+    (Text:'GL_STENCIL_PASS_DEPTH_PASS';Value:GL_STENCIL_PASS_DEPTH_PASS),
+    (Text:'GL_STENCIL_REF';Value:GL_STENCIL_REF),
+    (Text:'GL_STENCIL_WRITEMASK';Value:GL_STENCIL_WRITEMASK),
+    (Text:'GL_MATRIX_MODE';Value:GL_MATRIX_MODE),
+    (Text:'GL_NORMALIZE';Value:GL_NORMALIZE),
+    (Text:'GL_VIEWPORT';Value:GL_VIEWPORT),
+    (Text:'GL_MODELVIEW_STACK_DEPTH';Value:GL_MODELVIEW_STACK_DEPTH),
+    (Text:'GL_PROJECTION_STACK_DEPTH';Value:GL_PROJECTION_STACK_DEPTH),
+    (Text:'GL_TEXTURE_STACK_DEPTH';Value:GL_TEXTURE_STACK_DEPTH),
+    (Text:'GL_MODELVIEW_MATRIX';Value:GL_MODELVIEW_MATRIX),
+    (Text:'GL_PROJECTION_MATRIX';Value:GL_PROJECTION_MATRIX),
+    (Text:'GL_TEXTURE_MATRIX';Value:GL_TEXTURE_MATRIX),
+    (Text:'GL_ATTRIB_STACK_DEPTH';Value:GL_ATTRIB_STACK_DEPTH),
+    (Text:'GL_CLIENT_ATTRIB_STACK_DEPTH';Value:GL_CLIENT_ATTRIB_STACK_DEPTH),
+    (Text:'GL_ALPHA_TEST';Value:GL_ALPHA_TEST),
+    (Text:'GL_ALPHA_TEST_FUNC';Value:GL_ALPHA_TEST_FUNC),
+    (Text:'GL_ALPHA_TEST_REF';Value:GL_ALPHA_TEST_REF),
+    (Text:'GL_DITHER';Value:GL_DITHER),
+    (Text:'GL_BLEND_DST';Value:GL_BLEND_DST),
+    (Text:'GL_BLEND_SRC';Value:GL_BLEND_SRC),
+    (Text:'GL_BLEND';Value:GL_BLEND),
+    (Text:'GL_LOGIC_OP_MODE';Value:GL_LOGIC_OP_MODE),
+    (Text:'GL_INDEX_LOGIC_OP';Value:GL_INDEX_LOGIC_OP),
+    (Text:'GL_COLOR_LOGIC_OP';Value:GL_COLOR_LOGIC_OP),
+    (Text:'GL_AUX_BUFFERS';Value:GL_AUX_BUFFERS),
+    (Text:'GL_DRAW_BUFFER';Value:GL_DRAW_BUFFER),
+    (Text:'GL_READ_BUFFER';Value:GL_READ_BUFFER),
+    (Text:'GL_SCISSOR_BOX';Value:GL_SCISSOR_BOX),
+    (Text:'GL_SCISSOR_TEST';Value:GL_SCISSOR_TEST),
+    (Text:'GL_INDEX_CLEAR_VALUE';Value:GL_INDEX_CLEAR_VALUE),
+    (Text:'GL_INDEX_WRITEMASK';Value:GL_INDEX_WRITEMASK),
+    (Text:'GL_COLOR_CLEAR_VALUE';Value:GL_COLOR_CLEAR_VALUE),
+    (Text:'GL_COLOR_WRITEMASK';Value:GL_COLOR_WRITEMASK),
+    (Text:'GL_INDEX_MODE';Value:GL_INDEX_MODE),
+    (Text:'GL_RGBA_MODE';Value:GL_RGBA_MODE),
+    (Text:'GL_DOUBLEBUFFER';Value:GL_DOUBLEBUFFER),
+    (Text:'GL_STEREO';Value:GL_STEREO),
+    (Text:'GL_RENDER_MODE';Value:GL_RENDER_MODE),
+    (Text:'GL_PERSPECTIVE_CORRECTION_HINT';Value:GL_PERSPECTIVE_CORRECTION_HINT),
+    (Text:'GL_POINT_SMOOTH_HINT';Value:GL_POINT_SMOOTH_HINT),
+    (Text:'GL_LINE_SMOOTH_HINT';Value:GL_LINE_SMOOTH_HINT),
+    (Text:'GL_POLYGON_SMOOTH_HINT';Value:GL_POLYGON_SMOOTH_HINT),
+    (Text:'GL_FOG_HINT';Value:GL_FOG_HINT),
+    (Text:'GL_TEXTURE_GEN_S';Value:GL_TEXTURE_GEN_S),
+    (Text:'GL_TEXTURE_GEN_T';Value:GL_TEXTURE_GEN_T),
+    (Text:'GL_TEXTURE_GEN_R';Value:GL_TEXTURE_GEN_R),
+    (Text:'GL_TEXTURE_GEN_Q';Value:GL_TEXTURE_GEN_Q),
+    (Text:'GL_PIXEL_MAP_I_TO_I';Value:GL_PIXEL_MAP_I_TO_I),
+    (Text:'GL_PIXEL_MAP_S_TO_S';Value:GL_PIXEL_MAP_S_TO_S),
+    (Text:'GL_PIXEL_MAP_I_TO_R';Value:GL_PIXEL_MAP_I_TO_R),
+    (Text:'GL_PIXEL_MAP_I_TO_G';Value:GL_PIXEL_MAP_I_TO_G),
+    (Text:'GL_PIXEL_MAP_I_TO_B';Value:GL_PIXEL_MAP_I_TO_B),
+    (Text:'GL_PIXEL_MAP_I_TO_A';Value:GL_PIXEL_MAP_I_TO_A),
+    (Text:'GL_PIXEL_MAP_R_TO_R';Value:GL_PIXEL_MAP_R_TO_R),
+    (Text:'GL_PIXEL_MAP_G_TO_G';Value:GL_PIXEL_MAP_G_TO_G),
+    (Text:'GL_PIXEL_MAP_B_TO_B';Value:GL_PIXEL_MAP_B_TO_B),
+    (Text:'GL_PIXEL_MAP_A_TO_A';Value:GL_PIXEL_MAP_A_TO_A),
+    (Text:'GL_PIXEL_MAP_I_TO_I_SIZE';Value:GL_PIXEL_MAP_I_TO_I_SIZE),
+    (Text:'GL_PIXEL_MAP_S_TO_S_SIZE';Value:GL_PIXEL_MAP_S_TO_S_SIZE),
+    (Text:'GL_PIXEL_MAP_I_TO_R_SIZE';Value:GL_PIXEL_MAP_I_TO_R_SIZE),
+    (Text:'GL_PIXEL_MAP_I_TO_G_SIZE';Value:GL_PIXEL_MAP_I_TO_G_SIZE),
+    (Text:'GL_PIXEL_MAP_I_TO_B_SIZE';Value:GL_PIXEL_MAP_I_TO_B_SIZE),
+    (Text:'GL_PIXEL_MAP_I_TO_A_SIZE';Value:GL_PIXEL_MAP_I_TO_A_SIZE),
+    (Text:'GL_PIXEL_MAP_R_TO_R_SIZE';Value:GL_PIXEL_MAP_R_TO_R_SIZE),
+    (Text:'GL_PIXEL_MAP_G_TO_G_SIZE';Value:GL_PIXEL_MAP_G_TO_G_SIZE),
+    (Text:'GL_PIXEL_MAP_B_TO_B_SIZE';Value:GL_PIXEL_MAP_B_TO_B_SIZE),
+    (Text:'GL_PIXEL_MAP_A_TO_A_SIZE';Value:GL_PIXEL_MAP_A_TO_A_SIZE),
+    (Text:'GL_UNPACK_SWAP_BYTES';Value:GL_UNPACK_SWAP_BYTES),
+    (Text:'GL_UNPACK_LSB_FIRST';Value:GL_UNPACK_LSB_FIRST),
+    (Text:'GL_UNPACK_ROW_LENGTH';Value:GL_UNPACK_ROW_LENGTH),
+    (Text:'GL_UNPACK_SKIP_ROWS';Value:GL_UNPACK_SKIP_ROWS),
+    (Text:'GL_UNPACK_SKIP_PIXELS';Value:GL_UNPACK_SKIP_PIXELS),
+    (Text:'GL_UNPACK_ALIGNMENT';Value:GL_UNPACK_ALIGNMENT),
+    (Text:'GL_PACK_SWAP_BYTES';Value:GL_PACK_SWAP_BYTES),
+    (Text:'GL_PACK_LSB_FIRST';Value:GL_PACK_LSB_FIRST),
+    (Text:'GL_PACK_ROW_LENGTH';Value:GL_PACK_ROW_LENGTH),
+    (Text:'GL_PACK_SKIP_ROWS';Value:GL_PACK_SKIP_ROWS),
+    (Text:'GL_PACK_SKIP_PIXELS';Value:GL_PACK_SKIP_PIXELS),
+    (Text:'GL_PACK_ALIGNMENT';Value:GL_PACK_ALIGNMENT),
+    (Text:'GL_MAP_COLOR';Value:GL_MAP_COLOR),
+    (Text:'GL_MAP_STENCIL';Value:GL_MAP_STENCIL),
+    (Text:'GL_INDEX_SHIFT';Value:GL_INDEX_SHIFT),
+    (Text:'GL_INDEX_OFFSET';Value:GL_INDEX_OFFSET),
+    (Text:'GL_RED_SCALE';Value:GL_RED_SCALE),
+    (Text:'GL_RED_BIAS';Value:GL_RED_BIAS),
+    (Text:'GL_ZOOM_X';Value:GL_ZOOM_X),
+    (Text:'GL_ZOOM_Y';Value:GL_ZOOM_Y),
+    (Text:'GL_GREEN_SCALE';Value:GL_GREEN_SCALE),
+    (Text:'GL_GREEN_BIAS';Value:GL_GREEN_BIAS),
+    (Text:'GL_BLUE_SCALE';Value:GL_BLUE_SCALE),
+    (Text:'GL_BLUE_BIAS';Value:GL_BLUE_BIAS),
+    (Text:'GL_ALPHA_SCALE';Value:GL_ALPHA_SCALE),
+    (Text:'GL_ALPHA_BIAS';Value:GL_ALPHA_BIAS),
+    (Text:'GL_DEPTH_SCALE';Value:GL_DEPTH_SCALE),
+    (Text:'GL_DEPTH_BIAS';Value:GL_DEPTH_BIAS),
+    (Text:'GL_MAX_EVAL_ORDER';Value:GL_MAX_EVAL_ORDER),
+    (Text:'GL_MAX_LIGHTS';Value:GL_MAX_LIGHTS),
+    (Text:'GL_MAX_CLIP_PLANES';Value:GL_MAX_CLIP_PLANES),
+    (Text:'GL_MAX_TEXTURE_SIZE';Value:GL_MAX_TEXTURE_SIZE),
+    (Text:'GL_MAX_PIXEL_MAP_TABLE';Value:GL_MAX_PIXEL_MAP_TABLE),
+    (Text:'GL_MAX_ATTRIB_STACK_DEPTH';Value:GL_MAX_ATTRIB_STACK_DEPTH),
+    (Text:'GL_MAX_MODELVIEW_STACK_DEPTH';Value:GL_MAX_MODELVIEW_STACK_DEPTH),
+    (Text:'GL_MAX_NAME_STACK_DEPTH';Value:GL_MAX_NAME_STACK_DEPTH),
+    (Text:'GL_MAX_PROJECTION_STACK_DEPTH';Value:GL_MAX_PROJECTION_STACK_DEPTH),
+    (Text:'GL_MAX_TEXTURE_STACK_DEPTH';Value:GL_MAX_TEXTURE_STACK_DEPTH),
+    (Text:'GL_MAX_VIEWPORT_DIMS';Value:GL_MAX_VIEWPORT_DIMS),
+    (Text:'GL_MAX_CLIENT_ATTRIB_STACK_DEPTH';Value:GL_MAX_CLIENT_ATTRIB_STACK_DEPTH),
+    (Text:'GL_SUBPIXEL_BITS';Value:GL_SUBPIXEL_BITS),
+    (Text:'GL_INDEX_BITS';Value:GL_INDEX_BITS),
+    (Text:'GL_RED_BITS';Value:GL_RED_BITS),
+    (Text:'GL_GREEN_BITS';Value:GL_GREEN_BITS),
+    (Text:'GL_BLUE_BITS';Value:GL_BLUE_BITS),
+    (Text:'GL_ALPHA_BITS';Value:GL_ALPHA_BITS),
+    (Text:'GL_DEPTH_BITS';Value:GL_DEPTH_BITS),
+    (Text:'GL_STENCIL_BITS';Value:GL_STENCIL_BITS),
+    (Text:'GL_ACCUM_RED_BITS';Value:GL_ACCUM_RED_BITS),
+    (Text:'GL_ACCUM_GREEN_BITS';Value:GL_ACCUM_GREEN_BITS),
+    (Text:'GL_ACCUM_BLUE_BITS';Value:GL_ACCUM_BLUE_BITS),
+    (Text:'GL_ACCUM_ALPHA_BITS';Value:GL_ACCUM_ALPHA_BITS),
+    (Text:'GL_NAME_STACK_DEPTH';Value:GL_NAME_STACK_DEPTH),
+    (Text:'GL_AUTO_NORMAL';Value:GL_AUTO_NORMAL),
+    (Text:'GL_MAP1_COLOR_4';Value:GL_MAP1_COLOR_4),
+    (Text:'GL_MAP1_INDEX';Value:GL_MAP1_INDEX),
+    (Text:'GL_MAP1_NORMAL';Value:GL_MAP1_NORMAL),
+    (Text:'GL_MAP1_TEXTURE_COORD_1';Value:GL_MAP1_TEXTURE_COORD_1),
+    (Text:'GL_MAP1_TEXTURE_COORD_2';Value:GL_MAP1_TEXTURE_COORD_2),
+    (Text:'GL_MAP1_TEXTURE_COORD_3';Value:GL_MAP1_TEXTURE_COORD_3),
+    (Text:'GL_MAP1_TEXTURE_COORD_4';Value:GL_MAP1_TEXTURE_COORD_4),
+    (Text:'GL_MAP1_VERTEX_3';Value:GL_MAP1_VERTEX_3),
+    (Text:'GL_MAP1_VERTEX_4';Value:GL_MAP1_VERTEX_4),
+    (Text:'GL_MAP2_COLOR_4';Value:GL_MAP2_COLOR_4),
+    (Text:'GL_MAP2_INDEX';Value:GL_MAP2_INDEX),
+    (Text:'GL_MAP2_NORMAL';Value:GL_MAP2_NORMAL),
+    (Text:'GL_MAP2_TEXTURE_COORD_1';Value:GL_MAP2_TEXTURE_COORD_1),
+    (Text:'GL_MAP2_TEXTURE_COORD_2';Value:GL_MAP2_TEXTURE_COORD_2),
+    (Text:'GL_MAP2_TEXTURE_COORD_3';Value:GL_MAP2_TEXTURE_COORD_3),
+    (Text:'GL_MAP2_TEXTURE_COORD_4';Value:GL_MAP2_TEXTURE_COORD_4),
+    (Text:'GL_MAP2_VERTEX_3';Value:GL_MAP2_VERTEX_3),
+    (Text:'GL_MAP2_VERTEX_4';Value:GL_MAP2_VERTEX_4),
+    (Text:'GL_MAP1_GRID_DOMAIN';Value:GL_MAP1_GRID_DOMAIN),
+    (Text:'GL_MAP1_GRID_SEGMENTS';Value:GL_MAP1_GRID_SEGMENTS),
+    (Text:'GL_MAP2_GRID_DOMAIN';Value:GL_MAP2_GRID_DOMAIN),
+    (Text:'GL_MAP2_GRID_SEGMENTS';Value:GL_MAP2_GRID_SEGMENTS),
+    (Text:'GL_TEXTURE_1D';Value:GL_TEXTURE_1D),
+    (Text:'GL_TEXTURE_2D';Value:GL_TEXTURE_2D),
+    (Text:'GL_FEEDBACK_BUFFER_POINTER';Value:GL_FEEDBACK_BUFFER_POINTER),
+    (Text:'GL_FEEDBACK_BUFFER_SIZE';Value:GL_FEEDBACK_BUFFER_SIZE),
+    (Text:'GL_FEEDBACK_BUFFER_TYPE';Value:GL_FEEDBACK_BUFFER_TYPE),
+    (Text:'GL_SELECTION_BUFFER_POINTER';Value:GL_SELECTION_BUFFER_POINTER),
+    (Text:'GL_SELECTION_BUFFER_SIZE';Value:GL_SELECTION_BUFFER_SIZE),
+    (Text:'GL_TEXTURE_WIDTH';Value:GL_TEXTURE_WIDTH),
+    (Text:'GL_TEXTURE_HEIGHT';Value:GL_TEXTURE_HEIGHT),
+    (Text:'GL_TEXTURE_INTERNAL_FORMAT';Value:GL_TEXTURE_INTERNAL_FORMAT),
+    (Text:'GL_TEXTURE_BORDER_COLOR';Value:GL_TEXTURE_BORDER_COLOR),
+    (Text:'GL_TEXTURE_BORDER';Value:GL_TEXTURE_BORDER),
+    (Text:'GL_DONT_CARE';Value:GL_DONT_CARE),
+    (Text:'GL_FASTEST';Value:GL_FASTEST),
+    (Text:'GL_NICEST';Value:GL_NICEST),
+    (Text:'GL_LIGHT0';Value:GL_LIGHT0),
+    (Text:'GL_LIGHT1';Value:GL_LIGHT1),
+    (Text:'GL_LIGHT2';Value:GL_LIGHT2),
+    (Text:'GL_LIGHT3';Value:GL_LIGHT3),
+    (Text:'GL_LIGHT4';Value:GL_LIGHT4),
+    (Text:'GL_LIGHT5';Value:GL_LIGHT5),
+    (Text:'GL_LIGHT6';Value:GL_LIGHT6),
+    (Text:'GL_LIGHT7';Value:GL_LIGHT7),
+    (Text:'GL_AMBIENT';Value:GL_AMBIENT),
+    (Text:'GL_DIFFUSE';Value:GL_DIFFUSE),
+    (Text:'GL_SPECULAR';Value:GL_SPECULAR),
+    (Text:'GL_POSITION';Value:GL_POSITION),
+    (Text:'GL_SPOT_DIRECTION';Value:GL_SPOT_DIRECTION),
+    (Text:'GL_SPOT_EXPONENT';Value:GL_SPOT_EXPONENT),
+    (Text:'GL_SPOT_CUTOFF';Value:GL_SPOT_CUTOFF),
+    (Text:'GL_CONSTANT_ATTENUATION';Value:GL_CONSTANT_ATTENUATION),
+    (Text:'GL_LINEAR_ATTENUATION';Value:GL_LINEAR_ATTENUATION),
+    (Text:'GL_QUADRATIC_ATTENUATION';Value:GL_QUADRATIC_ATTENUATION),
+    (Text:'GL_COMPILE';Value:GL_COMPILE),
+    (Text:'GL_COMPILE_AND_EXECUTE';Value:GL_COMPILE_AND_EXECUTE),
+    (Text:'GL_CLEAR';Value:GL_CLEAR),
+    (Text:'GL_AND';Value:GL_AND),
+    (Text:'GL_AND_REVERSE';Value:GL_AND_REVERSE),
+    (Text:'GL_COPY';Value:GL_COPY),
+    (Text:'GL_AND_INVERTED';Value:GL_AND_INVERTED),
+    (Text:'GL_NOOP';Value:GL_NOOP),
+    (Text:'GL_XOR';Value:GL_XOR),
+    (Text:'GL_OR';Value:GL_OR),
+    (Text:'GL_NOR';Value:GL_NOR),
+    (Text:'GL_EQUIV';Value:GL_EQUIV),
+    (Text:'GL_INVERT';Value:GL_INVERT),
+    (Text:'GL_OR_REVERSE';Value:GL_OR_REVERSE),
+    (Text:'GL_COPY_INVERTED';Value:GL_COPY_INVERTED),
+    (Text:'GL_OR_INVERTED';Value:GL_OR_INVERTED),
+    (Text:'GL_NAND';Value:GL_NAND),
+    (Text:'GL_SET';Value:GL_SET),
+    (Text:'GL_EMISSION';Value:GL_EMISSION),
+    (Text:'GL_SHININESS';Value:GL_SHININESS),
+    (Text:'GL_AMBIENT_AND_DIFFUSE';Value:GL_AMBIENT_AND_DIFFUSE),
+    (Text:'GL_COLOR_INDEXES';Value:GL_COLOR_INDEXES),
+    (Text:'GL_MODELVIEW';Value:GL_MODELVIEW),
+    (Text:'GL_PROJECTION';Value:GL_PROJECTION),
+    (Text:'GL_TEXTURE';Value:GL_TEXTURE),
+    (Text:'GL_COLOR';Value:GL_COLOR),
+    (Text:'GL_DEPTH';Value:GL_DEPTH),
+    (Text:'GL_STENCIL';Value:GL_STENCIL),
+    (Text:'GL_COLOR_INDEX';Value:GL_COLOR_INDEX),
+    (Text:'GL_STENCIL_INDEX';Value:GL_STENCIL_INDEX),
+    (Text:'GL_DEPTH_COMPONENT';Value:GL_DEPTH_COMPONENT),
+    (Text:'GL_RED';Value:GL_RED),
+    (Text:'GL_GREEN';Value:GL_GREEN),
+    (Text:'GL_BLUE';Value:GL_BLUE),
+    (Text:'GL_ALPHA';Value:GL_ALPHA),
+    (Text:'GL_RGB';Value:GL_RGB),
+    (Text:'GL_RGBA';Value:GL_RGBA),
+    (Text:'GL_LUMINANCE';Value:GL_LUMINANCE),
+    (Text:'GL_LUMINANCE_ALPHA';Value:GL_LUMINANCE_ALPHA),
+    (Text:'GL_BITMAP';Value:GL_BITMAP),
+    (Text:'GL_POINT';Value:GL_POINT),
+    (Text:'GL_LINE';Value:GL_LINE),
+    (Text:'GL_FILL';Value:GL_FILL),
+    (Text:'GL_RENDER';Value:GL_RENDER),
+    (Text:'GL_FEEDBACK';Value:GL_FEEDBACK),
+    (Text:'GL_SELECT';Value:GL_SELECT),
+    (Text:'GL_FLAT';Value:GL_FLAT),
+    (Text:'GL_SMOOTH';Value:GL_SMOOTH),
+    (Text:'GL_KEEP';Value:GL_KEEP),
+    (Text:'GL_REPLACE';Value:GL_REPLACE),
+    (Text:'GL_INCR';Value:GL_INCR),
+    (Text:'GL_DECR';Value:GL_DECR),
+    (Text:'GL_VENDOR';Value:GL_VENDOR),
+    (Text:'GL_RENDERER';Value:GL_RENDERER),
+    (Text:'GL_VERSION';Value:GL_VERSION),
+    (Text:'GL_EXTENSIONS';Value:GL_EXTENSIONS),
+    (Text:'GL_S';Value:GL_S),
+    (Text:'GL_T';Value:GL_T),
+    (Text:'GL_R';Value:GL_R),
+    (Text:'GL_Q';Value:GL_Q),
+    (Text:'GL_MODULATE';Value:GL_MODULATE),
+    (Text:'GL_DECAL';Value:GL_DECAL),
+    (Text:'GL_TEXTURE_ENV_MODE';Value:GL_TEXTURE_ENV_MODE),
+    (Text:'GL_TEXTURE_ENV_COLOR';Value:GL_TEXTURE_ENV_COLOR),
+    (Text:'GL_TEXTURE_ENV';Value:GL_TEXTURE_ENV),
+    (Text:'GL_EYE_LINEAR';Value:GL_EYE_LINEAR),
+    (Text:'GL_OBJECT_LINEAR';Value:GL_OBJECT_LINEAR),
+    (Text:'GL_SPHERE_MAP';Value:GL_SPHERE_MAP),
+    (Text:'GL_TEXTURE_GEN_MODE';Value:GL_TEXTURE_GEN_MODE),
+    (Text:'GL_OBJECT_PLANE';Value:GL_OBJECT_PLANE),
+    (Text:'GL_EYE_PLANE';Value:GL_EYE_PLANE),
+    (Text:'GL_NEAREST';Value:GL_NEAREST),
+    (Text:'GL_LINEAR';Value:GL_LINEAR),
+    (Text:'GL_NEAREST_MIPMAP_NEAREST';Value:GL_NEAREST_MIPMAP_NEAREST),
+    (Text:'GL_LINEAR_MIPMAP_NEAREST';Value:GL_LINEAR_MIPMAP_NEAREST),
+    (Text:'GL_NEAREST_MIPMAP_LINEAR';Value:GL_NEAREST_MIPMAP_LINEAR),
+    (Text:'GL_LINEAR_MIPMAP_LINEAR';Value:GL_LINEAR_MIPMAP_LINEAR),
+    (Text:'GL_TEXTURE_MAG_FILTER';Value:GL_TEXTURE_MAG_FILTER),
+    (Text:'GL_TEXTURE_MIN_FILTER';Value:GL_TEXTURE_MIN_FILTER),
+    (Text:'GL_TEXTURE_WRAP_S';Value:GL_TEXTURE_WRAP_S),
+    (Text:'GL_TEXTURE_WRAP_T';Value:GL_TEXTURE_WRAP_T),
+    (Text:'GL_CLAMP';Value:GL_CLAMP),
+    (Text:'GL_REPEAT';Value:GL_REPEAT),
+    (Text:'GL_CLIENT_PIXEL_STORE_BIT';Value:GL_CLIENT_PIXEL_STORE_BIT),
+    (Text:'GL_CLIENT_VERTEX_ARRAY_BIT';Value:GL_CLIENT_VERTEX_ARRAY_BIT),
+    (Text:'GL_CLIENT_ALL_ATTRIB_BITS';Value:GL_CLIENT_ALL_ATTRIB_BITS),
+    (Text:'GL_POLYGON_OFFSET_FACTOR';Value:GL_POLYGON_OFFSET_FACTOR),
+    (Text:'GL_POLYGON_OFFSET_UNITS';Value:GL_POLYGON_OFFSET_UNITS),
+    (Text:'GL_POLYGON_OFFSET_POINT';Value:GL_POLYGON_OFFSET_POINT),
+    (Text:'GL_POLYGON_OFFSET_LINE';Value:GL_POLYGON_OFFSET_LINE),
+    (Text:'GL_POLYGON_OFFSET_FILL';Value:GL_POLYGON_OFFSET_FILL),
+    (Text:'GL_ALPHA4';Value:GL_ALPHA4),
+    (Text:'GL_ALPHA8';Value:GL_ALPHA8),
+    (Text:'GL_ALPHA12';Value:GL_ALPHA12),
+    (Text:'GL_ALPHA16';Value:GL_ALPHA16),
+    (Text:'GL_LUMINANCE4';Value:GL_LUMINANCE4),
+    (Text:'GL_LUMINANCE8';Value:GL_LUMINANCE8),
+    (Text:'GL_LUMINANCE12';Value:GL_LUMINANCE12),
+    (Text:'GL_LUMINANCE16';Value:GL_LUMINANCE16),
+    (Text:'GL_LUMINANCE4_ALPHA4';Value:GL_LUMINANCE4_ALPHA4),
+    (Text:'GL_LUMINANCE6_ALPHA2';Value:GL_LUMINANCE6_ALPHA2),
+    (Text:'GL_LUMINANCE8_ALPHA8';Value:GL_LUMINANCE8_ALPHA8),
+    (Text:'GL_LUMINANCE12_ALPHA4';Value:GL_LUMINANCE12_ALPHA4),
+    (Text:'GL_LUMINANCE12_ALPHA12';Value:GL_LUMINANCE12_ALPHA12),
+    (Text:'GL_LUMINANCE16_ALPHA16';Value:GL_LUMINANCE16_ALPHA16),
+    (Text:'GL_INTENSITY';Value:GL_INTENSITY),
+    (Text:'GL_INTENSITY4';Value:GL_INTENSITY4),
+    (Text:'GL_INTENSITY8';Value:GL_INTENSITY8),
+    (Text:'GL_INTENSITY12';Value:GL_INTENSITY12),
+    (Text:'GL_INTENSITY16';Value:GL_INTENSITY16),
+    (Text:'GL_R3_G3_B2';Value:GL_R3_G3_B2),
+    (Text:'GL_RGB4';Value:GL_RGB4),
+    (Text:'GL_RGB5';Value:GL_RGB5),
+    (Text:'GL_RGB8';Value:GL_RGB8),
+    (Text:'GL_RGB10';Value:GL_RGB10),
+    (Text:'GL_RGB12';Value:GL_RGB12),
+    (Text:'GL_RGB16';Value:GL_RGB16),
+    (Text:'GL_RGBA2';Value:GL_RGBA2),
+    (Text:'GL_RGBA4';Value:GL_RGBA4),
+    (Text:'GL_RGB5_A1';Value:GL_RGB5_A1),
+    (Text:'GL_RGBA8';Value:GL_RGBA8),
+    (Text:'GL_RGB10_A2';Value:GL_RGB10_A2),
+    (Text:'GL_RGBA12';Value:GL_RGBA12),
+    (Text:'GL_RGBA16';Value:GL_RGBA16),
+    (Text:'GL_TEXTURE_RED_SIZE';Value:GL_TEXTURE_RED_SIZE),
+    (Text:'GL_TEXTURE_GREEN_SIZE';Value:GL_TEXTURE_GREEN_SIZE),
+    (Text:'GL_TEXTURE_BLUE_SIZE';Value:GL_TEXTURE_BLUE_SIZE),
+    (Text:'GL_TEXTURE_ALPHA_SIZE';Value:GL_TEXTURE_ALPHA_SIZE),
+    (Text:'GL_TEXTURE_LUMINANCE_SIZE';Value:GL_TEXTURE_LUMINANCE_SIZE),
+    (Text:'GL_TEXTURE_INTENSITY_SIZE';Value:GL_TEXTURE_INTENSITY_SIZE),
+    (Text:'GL_PROXY_TEXTURE_1D';Value:GL_PROXY_TEXTURE_1D),
+    (Text:'GL_PROXY_TEXTURE_2D';Value:GL_PROXY_TEXTURE_2D),
+    (Text:'GL_TEXTURE_PRIORITY';Value:GL_TEXTURE_PRIORITY),
+    (Text:'GL_TEXTURE_RESIDENT';Value:GL_TEXTURE_RESIDENT),
+    (Text:'GL_TEXTURE_BINDING_1D';Value:GL_TEXTURE_BINDING_1D),
+    (Text:'GL_TEXTURE_BINDING_2D';Value:GL_TEXTURE_BINDING_2D),
+    (Text:'GL_VERTEX_ARRAY';Value:GL_VERTEX_ARRAY),
+    (Text:'GL_NORMAL_ARRAY';Value:GL_NORMAL_ARRAY),
+    (Text:'GL_COLOR_ARRAY';Value:GL_COLOR_ARRAY),
+    (Text:'GL_INDEX_ARRAY';Value:GL_INDEX_ARRAY),
+    (Text:'GL_TEXTURE_COORD_ARRAY';Value:GL_TEXTURE_COORD_ARRAY),
+    (Text:'GL_EDGE_FLAG_ARRAY';Value:GL_EDGE_FLAG_ARRAY),
+    (Text:'GL_VERTEX_ARRAY_SIZE';Value:GL_VERTEX_ARRAY_SIZE),
+    (Text:'GL_VERTEX_ARRAY_TYPE';Value:GL_VERTEX_ARRAY_TYPE),
+    (Text:'GL_VERTEX_ARRAY_STRIDE';Value:GL_VERTEX_ARRAY_STRIDE),
+    (Text:'GL_NORMAL_ARRAY_TYPE';Value:GL_NORMAL_ARRAY_TYPE),
+    (Text:'GL_NORMAL_ARRAY_STRIDE';Value:GL_NORMAL_ARRAY_STRIDE),
+    (Text:'GL_COLOR_ARRAY_SIZE';Value:GL_COLOR_ARRAY_SIZE),
+    (Text:'GL_COLOR_ARRAY_TYPE';Value:GL_COLOR_ARRAY_TYPE),
+    (Text:'GL_COLOR_ARRAY_STRIDE';Value:GL_COLOR_ARRAY_STRIDE),
+    (Text:'GL_INDEX_ARRAY_TYPE';Value:GL_INDEX_ARRAY_TYPE),
+    (Text:'GL_INDEX_ARRAY_STRIDE';Value:GL_INDEX_ARRAY_STRIDE),
+    (Text:'GL_TEXTURE_COORD_ARRAY_SIZE';Value:GL_TEXTURE_COORD_ARRAY_SIZE),
+    (Text:'GL_TEXTURE_COORD_ARRAY_TYPE';Value:GL_TEXTURE_COORD_ARRAY_TYPE),
+    (Text:'GL_TEXTURE_COORD_ARRAY_STRIDE';Value:GL_TEXTURE_COORD_ARRAY_STRIDE),
+    (Text:'GL_EDGE_FLAG_ARRAY_STRIDE';Value:GL_EDGE_FLAG_ARRAY_STRIDE),
+    (Text:'GL_VERTEX_ARRAY_POINTER';Value:GL_VERTEX_ARRAY_POINTER),
+    (Text:'GL_NORMAL_ARRAY_POINTER';Value:GL_NORMAL_ARRAY_POINTER),
+    (Text:'GL_COLOR_ARRAY_POINTER';Value:GL_COLOR_ARRAY_POINTER),
+    (Text:'GL_INDEX_ARRAY_POINTER';Value:GL_INDEX_ARRAY_POINTER),
+    (Text:'GL_TEXTURE_COORD_ARRAY_POINTER';Value:GL_TEXTURE_COORD_ARRAY_POINTER),
+    (Text:'GL_EDGE_FLAG_ARRAY_POINTER';Value:GL_EDGE_FLAG_ARRAY_POINTER),
+    (Text:'GL_V2F';Value:GL_V2F),
+    (Text:'GL_V3F';Value:GL_V3F),
+    (Text:'GL_C4UB_V2F';Value:GL_C4UB_V2F),
+    (Text:'GL_C4UB_V3F';Value:GL_C4UB_V3F),
+    (Text:'GL_C3F_V3F';Value:GL_C3F_V3F),
+    (Text:'GL_N3F_V3F';Value:GL_N3F_V3F),
+    (Text:'GL_C4F_N3F_V3F';Value:GL_C4F_N3F_V3F),
+    (Text:'GL_T2F_V3F';Value:GL_T2F_V3F),
+    (Text:'GL_T4F_V4F';Value:GL_T4F_V4F),
+    (Text:'GL_T2F_C4UB_V3F';Value:GL_T2F_C4UB_V3F),
+    (Text:'GL_T2F_C3F_V3F';Value:GL_T2F_C3F_V3F),
+    (Text:'GL_T2F_N3F_V3F';Value:GL_T2F_N3F_V3F),
+    (Text:'GL_T2F_C4F_N3F_V3F';Value:GL_T2F_C4F_N3F_V3F),
+    (Text:'GL_T4F_C4F_N3F_V4F';Value:GL_T4F_C4F_N3F_V4F),
+    (Text:'GL_EXT_vertex_array';Value:GL_EXT_vertex_array),
+    (Text:'GL_WIN_swap_hint';Value:GL_WIN_swap_hint),
+    (Text:'GL_EXT_bgra';Value:GL_EXT_bgra),
+    (Text:'GL_EXT_paletted_texture';Value:GL_EXT_paletted_texture),
+    (Text:'GL_VERTEX_ARRAY_EXT';Value:GL_VERTEX_ARRAY_EXT),
+    (Text:'GL_NORMAL_ARRAY_EXT';Value:GL_NORMAL_ARRAY_EXT),
+    (Text:'GL_COLOR_ARRAY_EXT';Value:GL_COLOR_ARRAY_EXT),
+    (Text:'GL_INDEX_ARRAY_EXT';Value:GL_INDEX_ARRAY_EXT),
+    (Text:'GL_TEXTURE_COORD_ARRAY_EXT';Value:GL_TEXTURE_COORD_ARRAY_EXT),
+    (Text:'GL_EDGE_FLAG_ARRAY_EXT';Value:GL_EDGE_FLAG_ARRAY_EXT),
+    (Text:'GL_VERTEX_ARRAY_SIZE_EXT';Value:GL_VERTEX_ARRAY_SIZE_EXT),
+    (Text:'GL_VERTEX_ARRAY_TYPE_EXT';Value:GL_VERTEX_ARRAY_TYPE_EXT),
+    (Text:'GL_VERTEX_ARRAY_STRIDE_EXT';Value:GL_VERTEX_ARRAY_STRIDE_EXT),
+    (Text:'GL_VERTEX_ARRAY_COUNT_EXT';Value:GL_VERTEX_ARRAY_COUNT_EXT),
+    (Text:'GL_NORMAL_ARRAY_TYPE_EXT';Value:GL_NORMAL_ARRAY_TYPE_EXT),
+    (Text:'GL_NORMAL_ARRAY_STRIDE_EXT';Value:GL_NORMAL_ARRAY_STRIDE_EXT),
+    (Text:'GL_NORMAL_ARRAY_COUNT_EXT';Value:GL_NORMAL_ARRAY_COUNT_EXT),
+    (Text:'GL_COLOR_ARRAY_SIZE_EXT';Value:GL_COLOR_ARRAY_SIZE_EXT),
+    (Text:'GL_COLOR_ARRAY_TYPE_EXT';Value:GL_COLOR_ARRAY_TYPE_EXT),
+    (Text:'GL_COLOR_ARRAY_STRIDE_EXT';Value:GL_COLOR_ARRAY_STRIDE_EXT),
+    (Text:'GL_COLOR_ARRAY_COUNT_EXT';Value:GL_COLOR_ARRAY_COUNT_EXT),
+    (Text:'GL_INDEX_ARRAY_TYPE_EXT';Value:GL_INDEX_ARRAY_TYPE_EXT),
+    (Text:'GL_INDEX_ARRAY_STRIDE_EXT';Value:GL_INDEX_ARRAY_STRIDE_EXT),
+    (Text:'GL_INDEX_ARRAY_COUNT_EXT';Value:GL_INDEX_ARRAY_COUNT_EXT),
+    (Text:'GL_TEXTURE_COORD_ARRAY_SIZE_EXT';Value:GL_TEXTURE_COORD_ARRAY_SIZE_EXT),
+    (Text:'GL_TEXTURE_COORD_ARRAY_TYPE_EXT';Value:GL_TEXTURE_COORD_ARRAY_TYPE_EXT),
+    (Text:'GL_TEXTURE_COORD_ARRAY_STRIDE_EXT';Value:GL_TEXTURE_COORD_ARRAY_STRIDE_EXT),
+    (Text:'GL_TEXTURE_COORD_ARRAY_COUNT_EXT';Value:GL_TEXTURE_COORD_ARRAY_COUNT_EXT),
+    (Text:'GL_EDGE_FLAG_ARRAY_STRIDE_EXT';Value:GL_EDGE_FLAG_ARRAY_STRIDE_EXT),
+    (Text:'GL_EDGE_FLAG_ARRAY_COUNT_EXT';Value:GL_EDGE_FLAG_ARRAY_COUNT_EXT),
+    (Text:'GL_VERTEX_ARRAY_POINTER_EXT';Value:GL_VERTEX_ARRAY_POINTER_EXT),
+    (Text:'GL_NORMAL_ARRAY_POINTER_EXT';Value:GL_NORMAL_ARRAY_POINTER_EXT),
+    (Text:'GL_COLOR_ARRAY_POINTER_EXT';Value:GL_COLOR_ARRAY_POINTER_EXT),
+    (Text:'GL_INDEX_ARRAY_POINTER_EXT';Value:GL_INDEX_ARRAY_POINTER_EXT),
+    (Text:'GL_TEXTURE_COORD_ARRAY_POINTER_EXT';Value:GL_TEXTURE_COORD_ARRAY_POINTER_EXT),
+    (Text:'GL_EDGE_FLAG_ARRAY_POINTER_EXT';Value:GL_EDGE_FLAG_ARRAY_POINTER_EXT),
+    (Text:'GL_DOUBLE_EXT';Value:GL_DOUBLE_EXT),
+    (Text:'GL_BGR_EXT';Value:GL_BGR_EXT),
+    (Text:'GL_BGRA_EXT';Value:GL_BGRA_EXT),
+    (Text:'GL_COLOR_TABLE_FORMAT_EXT';Value:GL_COLOR_TABLE_FORMAT_EXT),
+    (Text:'GL_COLOR_TABLE_WIDTH_EXT';Value:GL_COLOR_TABLE_WIDTH_EXT),
+    (Text:'GL_COLOR_TABLE_RED_SIZE_EXT';Value:GL_COLOR_TABLE_RED_SIZE_EXT),
+    (Text:'GL_COLOR_TABLE_GREEN_SIZE_EXT';Value:GL_COLOR_TABLE_GREEN_SIZE_EXT),
+    (Text:'GL_COLOR_TABLE_BLUE_SIZE_EXT';Value:GL_COLOR_TABLE_BLUE_SIZE_EXT),
+    (Text:'GL_COLOR_TABLE_ALPHA_SIZE_EXT';Value:GL_COLOR_TABLE_ALPHA_SIZE_EXT),
+    (Text:'GL_COLOR_TABLE_LUMINANCE_SIZE_EXT';Value:GL_COLOR_TABLE_LUMINANCE_SIZE_EXT),
+    (Text:'GL_COLOR_TABLE_INTENSITY_SIZE_EXT';Value:GL_COLOR_TABLE_INTENSITY_SIZE_EXT),
+    (Text:'GL_COLOR_INDEX1_EXT';Value:GL_COLOR_INDEX1_EXT),
+    (Text:'GL_COLOR_INDEX2_EXT';Value:GL_COLOR_INDEX2_EXT),
+    (Text:'GL_COLOR_INDEX4_EXT';Value:GL_COLOR_INDEX4_EXT),
+    (Text:'GL_COLOR_INDEX8_EXT';Value:GL_COLOR_INDEX8_EXT),
+    (Text:'GL_COLOR_INDEX12_EXT';Value:GL_COLOR_INDEX12_EXT),
+    (Text:'GL_COLOR_INDEX16_EXT';Value:GL_COLOR_INDEX16_EXT)
+   );
+
+function ULuaGl_StringToEnum(Str: String): GLenum;
+  function GetEnum(const Str: String): GLenum;
+  var
+    i : Integer;
+  begin
+    for i := 0 to high(ULuaGl_Enum) do
+    begin
+      if 0 = AnsiCompareText(Str, ULuaGl_Enum[i].Text) then
+      begin
+        Result := ULuaGl_Enum[i].Value;
+        Exit;
+      end;
+    end;
+    Result := ULuaGl_EnumERROR;
+  end;
+  var
+    i : Integer;
+    j : Integer;
+    temp : GLenum;
+begin
+  Result := 0;
+  j := 1;
+  for i := 1 to Length(Str) do
+  begin
+    if Str[i] = ',' then
+    begin
+      temp := GetEnum(Copy(Str,j,i-j));
+      if temp <> ULuaGl_EnumERROR then
+        Result := Result or temp;
+      j := i + 1;
+    end;
+  end;
+
+  temp := GetEnum(Copy(Str,j,MaxInt));
+  if (temp = ULuaGl_EnumERROR) then
+  begin
+    if Result = 0 then
+      Result := ULuaGl_EnumERROR;
+    exit;
+  end;
+  Result := Result or temp;
+end;
+end.
+
diff --git a/src/lua/ULuaLog.pas b/src/lua/ULuaLog.pas
new file mode 100644
index 00000000..95efaa19
--- /dev/null
+++ b/src/lua/ULuaLog.pas
@@ -0,0 +1,167 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit ULuaLog;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+  SysUtils,
+  ULog,
+  ULua;
+
+function luaopen_Log (L: Plua_State): Integer; cdecl;
+
+function ULuaLog_LogError(L: Plua_State): Integer; cdecl;
+function ULuaLog_LogMsg(L: Plua_State): Integer; cdecl;
+function ULuaLog_BenchmarkStart(L: Plua_State): Integer; cdecl;
+function ULuaLog_BenchmarkEnd(L: Plua_State): Integer; cdecl;
+function ULuaLog_LogBenchmark(L: Plua_State): Integer; cdecl;
+function ULuaLog_LogDebug(L: Plua_State): Integer; cdecl;
+function ULuaLog_LogInfo(L: Plua_State): Integer; cdecl;
+function ULuaLog_LogStatus(L: Plua_State): Integer; cdecl;
+function ULuaLog_LogWarn(L: Plua_State): Integer; cdecl;
+function ULuaLog_LogCritical(L: Plua_State): Integer; cdecl;
+function ULuaLog_CriticalError(L: Plua_State): Integer; cdecl;
+function ULuaLog_GetLogLevel(L: Plua_State): Integer; cdecl;
+function ULuaLog_SetLogLevel(L: Plua_State): Integer; cdecl;
+
+
+const
+  ULuaLog_Lib_f: array [0..13] of lual_reg = (
+   (name:'LogError';func:ULuaLog_LogError),
+   (name:'LogMsg';func:ULuaLog_LogMsg),
+   (name:'BenchmarkStart';func:ULuaLog_BenchmarkStart),
+   (name:'BenchmarkEnd';func:ULuaLog_BenchmarkEnd),
+   (name:'LogBenchmark';func:ULuaLog_LogBenchmark),
+   (name:'LogDebug';func:ULuaLog_LogDebug),
+   (name:'LogInfo';func:ULuaLog_LogInfo),
+   (name:'LogStatus';func:ULuaLog_LogStatus),
+   (name:'LogWarn';func:ULuaLog_LogWarn),
+   (name:'LogCritical';func:ULuaLog_LogCritical),
+   (name:'CriticalError';func:ULuaLog_CriticalError),
+   (name:'SetLogLevel';func:ULuaLog_GetLogLevel),
+   (name:'GetLogLevel';func:ULuaLog_SetLogLevel),
+   (name:nil;func:nil)
+   );
+
+implementation
+
+function ULuaLog_LogError(L: Plua_State): Integer; cdecl;
+begin
+  if (lua_gettop(L) > 1) then
+    Log.LogError(luaL_checkstring(L,-2),luaL_checkstring(L,-1))
+  else
+    Log.LogError(luaL_checkstring(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_LogMsg(L: Plua_State): Integer; cdecl;
+begin
+  if (lua_gettop(L) > 2) then
+    Log.LogMsg(luaL_checkstring(L,-3),luaL_checkstring(L,-1),luaL_checkinteger(L,-2))
+  else
+    Log.LogMsg(luaL_checkstring(L,-2),luaL_checkinteger(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_BenchmarkStart(L: Plua_State): Integer; cdecl;
+begin
+  Log.BenchmarkStart(luaL_checkinteger(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_BenchmarkEnd(L: Plua_State): Integer; cdecl;
+begin
+  Log.BenchmarkEnd(luaL_checkinteger(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_LogBenchmark(L: Plua_State): Integer; cdecl;
+begin
+  Log.LogBenchmark(luaL_checkstring(L,-2),luaL_checkinteger(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_LogDebug(L: Plua_State): Integer; cdecl;
+begin
+  Log.LogDebug(luaL_checkstring(L,-2),luaL_checkstring(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_LogInfo(L: Plua_State): Integer; cdecl;
+begin
+  Log.LogInfo(luaL_checkstring(L,-2),luaL_checkstring(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_LogStatus(L: Plua_State): Integer; cdecl;
+begin
+  Log.LogStatus(luaL_checkstring(L,-2),luaL_checkstring(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_LogWarn(L: Plua_State): Integer; cdecl;
+begin
+  Log.LogWarn(luaL_checkstring(L,-2),luaL_checkstring(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_LogCritical(L: Plua_State): Integer; cdecl;
+begin
+  Log.LogCritical(luaL_checkstring(L,-2),luaL_checkstring(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_CriticalError(L: Plua_State): Integer; cdecl;
+begin
+  Log.CriticalError(luaL_checkstring(L,-1));
+  result:=0; // number of results
+end;
+
+function ULuaLog_GetLogLevel(L: Plua_State): Integer; cdecl;
+begin
+  lua_pushinteger(L,Log.GetLogLevel());
+  result:=1; // number of results
+end;
+
+function ULuaLog_SetLogLevel(L: Plua_State): Integer; cdecl;
+begin
+  Log.SetLogLevel(luaL_checkinteger(L,-1));
+  result:=0; // number of results
+end;
+
+function luaopen_Log (L: Plua_State): Integer; cdecl;
+begin
+    luaL_register(L,'Log',@ULuaLog_Lib_f[0]);
+    result:=1;
+end;
+end.
diff --git a/src/lua/ULuaParty.pas b/src/lua/ULuaParty.pas
new file mode 100644
index 00000000..69096e97
--- /dev/null
+++ b/src/lua/ULuaParty.pas
@@ -0,0 +1,391 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit ULuaParty;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses ULua;
+
+{ lua c functions from Party table. Enables creating of party modes w/ lua scripts }
+
+{ Party.Register - register party mode at party manager
+  arguments: info: table
+                   Name: String;          //< Name used as identifier (language strings, etc.). Has to be set.
+                   CanNonParty: Boolean   //< mode is playable when not in party mode. defaulted to false if not set
+                   CanParty: Boolean      //< mode is playable in party mode. defaulted to false if not set
+                   PlayerCount: Table     //< playable with one, two, three etc. players per team. defaulted to no restrictions if not set. (use table constructor e.g. {1, 2, 3) means playable w/ 1, 2 or three players)
+                   TeamCount: Table       //< playable with one, two, three etc. different teams. defaulted to no restrictions if not set. (use table constructor e.g. {1, 2, 3) means playable w/ 1, 2 or three players)
+
+                   BeforeSongSelect: String   //< name of global that will be called before song select screen is shown (if nil, not callable or returns true, default action will be executed)
+                   AfterSongSelect: String    //< name of global that will be called after song is selected (if nil, not callable or returns true, default action will be executed)
+
+                   BeforeSing: String         //< name of global that will be called before song select screen is shown (if nil, not callable or returns true, default action will be executed)
+                   OnSing: String             //< name of global that will be called before song select screen is shown (if nil, not callable or returns true, default action will be executed)
+                   AfterSing: String          //< name of global that will be called before song select screen is shown (if nil, not callable or returns true, default action will be executed)}
+function ULuaParty_Register(L: Plua_State): Integer; cdecl;
+
+{ Party.GameFinished - returns true if no party game is running or all rounds
+  of current game were played }
+function ULuaParty_GameFinished(L: Plua_State): Integer; cdecl;
+
+(* Party.SetRoundRanking - sets ranking of current party round,
+  arguments: Ranking: table
+  ranking of team i is the value (integer from 1 to number of teams) of the
+  table with index [i: number].
+  you may call this function in the following way:
+    Party.SetRoundRanking({3, 1, 2});
+    this means: team 1 is ranked third, team 2 is ranked first and team 3 is
+    ranked second.
+  if no party game is started or party game is finished
+  it will raise an error *)
+function ULuaParty_SetRoundRanking(L: Plua_State): Integer; cdecl;
+
+{ Party.GetTeams - returns a table with all information and structure as
+  in the TPartyGame.Teams array }
+function ULuaParty_GetTeams(L: Plua_State): Integer; cdecl;
+
+{ Party.SetTeams - changes all fields from TPartyGame.Teams that have been
+  set in the table given as first argument}
+function ULuaParty_SetTeams(L: Plua_State): Integer; cdecl;
+
+const
+  ULuaParty_Lib_f: array [0..4] of lual_reg = (
+    (name:'Register'; func:ULuaParty_Register),
+    (name:'GameFinished'; func:ULuaParty_GameFinished),
+    (name:'SetRoundRanking'; func:ULuaParty_SetRoundRanking),
+    (name:'GetTeams'; func:ULuaParty_GetTeams),
+    (name:'SetTeams'; func:ULuaParty_SetTeams)
+  );
+
+implementation
+uses ULuaCore, ULuaUtils, UParty, SysUtils;
+
+
+{ Party.Register - register party mode at party manager
+  arguments: info: table
+                   Name: String;          //< Name used as identifier (language strings, etc.). Has to be set.
+                   CanNonParty: Boolean   //< mode is playable when not in party mode. defaulted to false if not set
+                   CanParty: Boolean      //< mode is playable in party mode. defaulted to false if not set
+                   PlayerCount: Table     //< playable with one, two, three etc. players per team. defaulted to no restrictions if not set. (use table constructor e.g. {1, 2, 3) means playable w/ 1, 2 or three players)
+                   TeamCount: Table       //< playable with one, two, three etc. different teams. defaulted to no restrictions if not set. (use table constructor e.g. {1, 2, 3) means playable w/ 1, 2 or three players)
+
+                   BeforeSongSelect: String   //< name of global that will be called before song select screen is shown (if nil, not callable or returns true, default action will be executed)
+                   AfterSongSelect: String    //< name of global that will be called after song is selected (if nil, not callable or returns true, default action will be executed)
+
+                   BeforeSing: String         //< name of global that will be called before song select screen is shown (if nil, not callable or returns true, default action will be executed)
+                   OnSing: String             //< name of global that will be called before song select screen is shown (if nil, not callable or returns true, default action will be executed)
+                   AfterSing: String          //< name of global that will be called before song select screen is shown (if nil, not callable or returns true, default action will be executed)}
+function ULuaParty_Register(L: Plua_State): Integer; cdecl;
+  var
+    Info: TParty_ModeInfo;
+    Key: String;
+    P: TLuaPlugin;
+begin
+  Result := 0;
+  
+  // check for table on stack
+  luaL_checkType(L, 1, LUA_TTABLE);
+
+  // get parent id
+  P := Lua_GetOwner(L);
+
+
+  // set mode info to default
+  Party.DefaultModeInfo(Info);
+
+
+  // set parent in info rec and pop it from stack
+  Info.Parent := P.Id;
+
+  // go through table elements
+  lua_pushNil(L);
+  while (lua_Next(L, 1) <> 0) do
+  begin
+    Key := lowercase(lua_ToString(L, -2));
+
+    if (Key = 'name') and lua_isString(L, -1) then
+      Info.Name := lua_toString(L, -1)
+    else if (Key = 'cannonparty') and lua_isBoolean(L, -1) then
+      Info.CanNonParty := lua_toBoolean(L, -1)
+    else if (Key = 'canparty') and lua_isBoolean(L, -1) then
+      Info.CanParty := lua_toBoolean(L, -1)
+    else if (Key = 'playercount') and lua_isTable(L, -1) then
+      Info.PlayerCount := lua_toBinInt(L, -1)
+    else if (Key = 'teamcount') and lua_isTable(L, -1) then
+      Info.TeamCount := lua_toBinInt(L, -1)
+    else if (Key = 'beforesongselect') and lua_isString(L, -1) then
+      Info.Functions.BeforeSongSelect := lua_toString(L, -1)
+    else if (Key = 'aftersongselect') and lua_isString(L, -1) then
+      Info.Functions.AfterSongSelect := lua_toString(L, -1)
+    else if (Key = 'beforesing') and lua_isString(L, -1) then
+      Info.Functions.BeforeSing := lua_toString(L, -1)
+    else if (Key = 'onsing') and lua_isString(L, -1) then
+      Info.Functions.OnSing := lua_toString(L, -1)
+    else if (Key = 'aftersing') and lua_isString(L, -1) then
+      Info.Functions.AfterSing := lua_toString(L, -1);
+
+    // pop value from stack so key is on top
+    lua_pop(L, 1);
+  end;
+
+  // clear stack from table
+  lua_pop(L, lua_gettop(L));
+
+  if not Party.RegisterMode(Info) then
+    luaL_error(L, PChar('can''t register party mode at party manager in Party.Register. Is Info.Name defined or is there another mode with this name?'));
+end;
+
+{ Party.GameFinished - returns true if no party game is running or all rounds
+  of current game were played }
+function ULuaParty_GameFinished(L: Plua_State): Integer; cdecl;
+begin
+  // clear stack
+  lua_pop(L, lua_gettop(L));
+
+  // push result
+  lua_pushBoolean(L, Party.GameFinished);
+
+  //we return one value
+  Result := 1;
+end;
+
+{ Party.SetRoundRanking - sets ranking of current party round,
+  if no party game is started or party game is finished
+  it will raise an error }
+function ULuaParty_SetRoundRanking(L: Plua_State): Integer; cdecl;
+var
+  R: AParty_TeamRanking;
+  I: Integer;
+  Rank: Integer;
+begin
+  Result := 0;
+
+  luaL_checktype(L, 1, LUA_TTABLE);
+
+  lua_checkstack(L, 1);
+
+  SetLength(R, Length(Party.Teams));
+
+  for I := 0 to High(R) do
+  begin
+    lua_pushInteger(L, (I+1));
+    lua_gettable(L, 1);
+
+    R[I].Rank := Length(R);
+    R[I].Team := I;
+    if (lua_isnumber(L, -1)) then
+    begin
+      Rank := lua_toInteger(L, -1);
+      if (Rank >= 1) and (Rank <= Length(R)) then
+        R[I].Rank := Rank
+    end;
+
+    lua_pop(L, 1);
+    
+  end;
+
+  // pop table
+  lua_pop(L, 1);
+
+  if (not Party.SetRanking(R)) then
+    luaL_error(L, PChar('cann''t set party round ranking. Is party started and not finished yet?'));
+end;
+
+{ Party.GetTeams - returns a table with all information and structure as
+  in the TPartyGame.Teams array }
+function ULuaParty_GetTeams(L: Plua_State): Integer; cdecl;
+  var
+    Team: Integer;
+    Player: Integer;
+begin
+  // clear stack
+  lua_pop(L, lua_gettop(L));
+
+  // ensure we have enough stack slots left
+  lua_checkstack(L, 7);
+
+  // create the table we want to return
+  lua_createtable(L, Length(Party.Teams), 0);
+
+  // add the teams
+  for Team := 0 to High(Party.Teams) do
+  begin
+    // push key for current teams value. lua array beggins at 1
+    lua_pushInteger(L, Team + 1);
+
+    // push table containing team info and players table
+    lua_createtable(L, 0, 5);
+
+    // team name
+    lua_pushString(L, PChar(Party.Teams[Team].Name));
+    lua_setField(L, -2, 'Name');
+
+    // team score
+    lua_pushInteger(L, Party.Teams[Team].Score);
+    lua_setField(L, -2, 'Score');
+
+    // team jokers left
+    lua_pushInteger(L, Party.Teams[Team].JokersLeft);
+    lua_setField(L, -2, 'JokersLeft');
+
+    // team nextPlayer
+    lua_pushInteger(L, Party.Teams[Team].NextPlayer);
+    lua_setField(L, -2, 'NextPlayer');
+
+    // team players table
+    lua_createtable(L, Length(Party.Teams[Team].Players), 0);
+
+    //add players
+    for Player := 0 to High(Party.Teams[Team].Players) do
+    begin
+      // push key for current players value. lua array beggins at 1
+      lua_pushInteger(L, Player + 1);
+
+      // push table containing player info
+      lua_createTable(L, 0, 2);
+
+      // player name
+      lua_PushString(L, PChar(Party.Teams[Team].Players[Player].Name));
+      lua_SetField(L, -2, 'Name');
+
+      // players times played
+      lua_PushInteger(L, Party.Teams[Team].Players[Player].TimesPlayed);
+      lua_SetField(L, -2, 'TimesPlayed');
+
+      // add value - key - pair to teams player table
+      lua_setTable(L, -3);
+    end;
+
+    lua_setField(L, -2, 'Players');
+
+    // add value - key - pair to returned table
+    lua_setTable(L, -3);
+  end;
+
+  // we return 1 value (the first table)
+  Result := 1;
+end;
+
+{ Party.SetTeams - changes all fields from TPartyGame.Teams that have been
+  set in the table given as first argument}
+function ULuaParty_SetTeams(L: Plua_State): Integer; cdecl;
+
+  procedure Do_Player(Team, Player: Integer);
+    var
+      Key: String;
+  begin
+    if (Player >= 0) and (Player <= High(Party.Teams[Team].Players)) then
+    begin
+      // go through table elements
+      lua_pushNil(L);
+      while (lua_Next(L, -2) <> 0) do
+      begin
+        Key := lowercase(lua_ToString(L, -2));
+
+        if (Key = 'name') and lua_isString(L, -1) then
+          Party.Teams[Team].Players[Player].Name := lua_toString(L, -1)
+        else if (Key = 'timesplayed') and lua_isNumber(L, -1) then
+          Party.Teams[Team].Players[Player].TimesPlayed := lua_toInteger(L, -1);
+
+        // pop value from stack so key is on top
+        lua_pop(L, 1);
+      end;
+    end;
+  end;
+
+  procedure Do_Players(Team: Integer);
+  begin
+    // go through table elements
+    lua_pushNil(L);
+    while (lua_Next(L, -2) <> 0) do
+    begin
+      // check if key is a number and value is a table
+      if (lua_isNumber(L, -2)) and (lua_isTable(L, -1)) then
+        Do_Player(Team, lua_toInteger(L, -2));
+
+      // pop value from stack so key is on top
+      lua_pop(L, 1);
+    end;
+  end;
+
+  procedure Do_Team(Team: Integer);
+    var
+      Key: String;
+  begin
+    if (Team >= 0) and (Team <= High(Party.Teams)) then
+    begin
+      // go through table elements
+      lua_pushNil(L);
+      while (lua_Next(L, -2) <> 0) do
+      begin
+        Key := lowercase(lua_ToString(L, -2));
+
+        if (Key = 'name') and lua_isString(L, -1) then
+          Party.Teams[Team].Name := lua_toString(L, -1)
+        else if (Key = 'score') and lua_isNumber(L, -1) then
+          Party.Teams[Team].Score := lua_toInteger(L, -1)
+        else if (Key = 'jokersleft') and lua_isNumber(L, -1) then
+          Party.Teams[Team].JokersLeft := lua_toInteger(L, -1)
+        else if (Key = 'currentplayer') and lua_isNumber(L, -1) then
+          Party.Teams[Team].NextPlayer := lua_toInteger(L, -1)
+        else if (Key = 'players') and lua_isTable(L, -1) then
+          Do_Players(Team);
+
+        // pop value from stack so key is on top
+        lua_pop(L, 1);
+      end;
+    end;
+  end;
+begin
+  Result := 0;
+  
+  // check for table on stack
+  luaL_checkType(L, 1, LUA_TTABLE);
+
+
+  // go through table elements
+  lua_pushNil(L);
+  while (lua_Next(L, 1) <> 0) do
+  begin
+    // check if key is a number and value is a table
+    if (lua_isNumber(L, -2)) and (lua_isTable(L, -1)) then
+      Do_Team(lua_toInteger(L, -2));
+
+    // pop value from stack so key is on top
+    lua_pop(L, 1);
+  end;
+
+  // clear stack from table
+  lua_pop(L, lua_gettop(L));
+end;
+
+end.
+\ No newline at end of file
diff --git a/src/lua/ULuaScreenSing.pas b/src/lua/ULuaScreenSing.pas
new file mode 100644
index 00000000..7e17224c
--- /dev/null
+++ b/src/lua/ULuaScreenSing.pas
@@ -0,0 +1,489 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL: https://ultrastardx.svn.sourceforge.net/svnroot/ultrastardx/branches/experimental/Lua/src/lua/ULuaTexture.pas $
+ * $Id: ULuaTexture.pas 1551 2009-01-04 14:08:33Z Hawkear $
+ *}
+
+unit ULuaScreenSing;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+  ULua;
+
+{ returns a table with following structure:
+    t[1..playercount] = score of player i }
+function ULuaScreenSing_GetScores(L: Plua_State): Integer; cdecl;
+
+{ returns a table with following structure:
+    t[1..playercount] = rating of player i range: [0..1] }
+function ULuaScreenSing_GetRating(L: Plua_State): Integer; cdecl;
+
+{ returns a table with following structure:
+    t[1..playercount] = rect of players score background: table(x, y, w, h) }
+function ULuaScreenSing_GetScoreBGRect(L: Plua_State): Integer; cdecl;
+
+{ returns a table with following structure:
+    t[1..playercount] = rect of players rating bar: table(x, y, w, h) }
+function ULuaScreenSing_GetRBRect(L: Plua_State): Integer; cdecl;
+
+{ ScreenSing.GetBPM - no arguments
+  returns the beats per minutes of the current song in quarts }
+function ULuaScreenSing_GetBPM(L: Plua_State): Integer; cdecl;
+
+{ ScreenSing.BeatsToSeconds(Beats: float)
+  returns the time in seconds that the given number of beats (in quarts) last }
+function ULuaScreenSing_BeatsToSeconds(L: Plua_State): Integer; cdecl;
+
+{ ScreenSing.SecondsToBeats(Seconds: float)
+  returns the Beats in quarts that the given seconds last }
+function ULuaScreenSing_SecondsToBeats(L: Plua_State): Integer; cdecl;
+
+{ ScreenSing.GetBeat() - returns current beat of lyricstate (in quarts) }
+function ULuaScreenSing_GetBeat(L: Plua_State): Integer; cdecl;
+
+{ finishes current song, if sing screen is not shown it will raise
+  an error }
+function ULuaScreenSing_Finish(L: Plua_State): Integer; cdecl;
+
+{ ScreenSing.GetSettings - no arguments
+  returns a table filled with the data of TScreenSing.Settings }
+function ULuaScreenSing_GetSettings(L: Plua_State): Integer; cdecl;
+
+{ ScreenSing.SetSettings - arguments: Table
+  sets all attributes of TScreenSing.Settings that are
+  unequal to nil in Table }
+function ULuaScreenSing_SetSettings(L: Plua_State): Integer; cdecl;
+
+{ ScreenSing.GetSongLines - no arguments
+  returns a table filled with lines of the loaded song or
+  nil if no song is loaded (singscreen is not displayed)
+  structure of returned table:
+    array [1.."count of lines"]
+     \
+     | Start: integer - beat the line is displayed at (on top of lyrics display)
+     | Lyric: string  - full lyric of the line
+     | Notes: array [1.."count notes of this line"]
+     \
+      | Start: integer    - beat the note starts at
+      | Length: integer   - length in beats
+      | Tone: integer     - pitch that has to be sung, full range
+      | NoteType: integer - 0 for freestyle, 1 for normal, 2 for golden
+      | Text: string      - text of this fragment }
+function ULuaScreenSing_GetSongLines(L: Plua_State): Integer; cdecl;
+
+const
+  ULuaScreenSing_Lib_f: array [0..11] of lual_reg = (
+    (name:'GetScores';func:ULuaScreenSing_GetScores),
+    (name:'GetRating';func:ULuaScreenSing_GetRating),
+    (name:'GetBPM';func:ULuaScreenSing_GetBPM),
+    (name:'BeatsToSeconds';func:ULuaScreenSing_BeatsToSeconds),
+    (name:'SecondsToBeats';func:ULuaScreenSing_SecondsToBeats),
+    (name:'GetBeat';func:ULuaScreenSing_GetBeat),
+    (name:'GetScoreBGRect';func:ULuaScreenSing_GetScoreBGRect),
+    (name:'GetRBRect';func:ULuaScreenSing_GetRBRect),
+    (name:'Finish';func:ULuaScreenSing_Finish),
+    (name:'GetSettings';func:ULuaScreenSing_GetSettings),
+    (name:'SetSettings';func:ULuaScreenSing_SetSettings),
+    (name:'GetSongLines';func:ULuaScreenSing_GetSongLines)
+  );
+
+implementation
+uses UScreenSing, UNote, UDisplay, UGraphic, UMusic, ULuaUtils, SysUtils;
+
+{ returns a table with following structure:
+    t[1..playercount] = score of player i }
+function ULuaScreenSing_GetScores(L: Plua_State): Integer; cdecl;
+  var
+    Top: Integer;
+    I: Integer;
+begin
+  Result := 1;
+
+  // pop arguments
+  Top := lua_getTop(L);
+  if (Top > 0) then
+    lua_pop(L, Top);
+
+  // create table
+  lua_createtable(L, Length(Player), 0);
+
+  // fill w/ values
+  for I := 0 to High(Player) do
+  begin
+    lua_pushInteger(L, I + 1);
+    lua_pushInteger(L, Player[I].ScoreTotalInt);
+
+    lua_settable(L, -3);
+  end;
+
+  // leave table on stack, it is our result
+end;
+
+{ returns a table with following structure:
+    t[1..playercount] = rating of player i range: [0..1] }
+function ULuaScreenSing_GetRating(L: Plua_State): Integer; cdecl;
+  var
+    Top: Integer;
+    I: Integer;
+begin
+  Result := 1;
+
+  // pop arguments
+  Top := lua_getTop(L);
+  if (Top > 0) then
+    lua_pop(L, Top);
+
+  // create table
+  lua_createtable(L, Length(Player), 0);
+
+  // fill w/ values
+  for I := 0 to High(ScreenSing.Scores.Players) do
+  begin
+    lua_pushInteger(L, I + 1);
+    lua_pushNumber(L, ScreenSing.Scores.Players[I].RBPos);
+
+    lua_settable(L, -3);
+  end;
+
+  // leave table on stack, it is our result
+end;
+
+{ ScreenSing.GetBPM - no arguments
+  returns the beats per minutes of the current song in quarts }
+function ULuaScreenSing_GetBPM(L: Plua_State): Integer; cdecl;
+begin
+  lua_ClearStack(L);
+  Result := 1;
+
+  if (CurrentSong = nil) or (Length(CurrentSong.BPM) = 0) or (Display.CurrentScreen <> @ScreenSing) then
+    lua_PushNumber(L, 0) // in case of error
+  else if (Length(CurrentSong.BPM) = 1) then
+    lua_PushNumber(L, CurrentSong.BPM[0].BPM)
+  else
+  begin
+    // to-do: do this for songs w/ BPM changes
+    //        or drop support for BPM changes?!
+  end;
+end;
+
+{ ScreenSing.BeatsToSeconds(Beats: float)
+  returns the time in seconds that the given number of beats (in quarts) last }
+function ULuaScreenSing_BeatsToSeconds(L: Plua_State): Integer; cdecl;
+begin
+  Result := 1;
+
+  if (CurrentSong = nil) or (Length(CurrentSong.BPM) = 0) or (Display.CurrentScreen <> @ScreenSing) then
+    lua_PushNumber(L, 0) // in case of error
+  else if (Length(CurrentSong.BPM) = 1) then
+    lua_PushNumber(L, luaL_CheckNumber(L, 1) * 60 / CurrentSong.BPM[0].BPM)
+  else
+  begin
+    // to-do: do this for songs w/ BPM changes
+    //        or drop support for BPM changes?!
+  end;
+end;
+
+{ ScreenSing.BeatsToSeconds(Seconds: float)
+  returns the Beats in quarts that the given seconds last }
+function ULuaScreenSing_SecondsToBeats(L: Plua_State): Integer; cdecl;
+begin
+  Result := 1;
+
+  if (CurrentSong = nil) or (Length(CurrentSong.BPM) = 0) or (Display.CurrentScreen <> @ScreenSing) then
+    lua_PushNumber(L, 0)
+  else if (Length(CurrentSong.BPM) = 1) then
+    lua_PushNumber(L, luaL_CheckNumber(L, 1) * CurrentSong.BPM[0].BPM / 60)
+  else
+  begin
+    // to-do: do this for songs w/ BPM changes
+    //        or drop support for BPM changes?!
+  end;
+end;
+
+{ ScreenSing.GetBeat() - returns current beat of lyricstate (in quarts) }
+function ULuaScreenSing_GetBeat(L: Plua_State): Integer; cdecl;
+var top: Integer;
+begin
+  //remove arguments (if any)
+  top := lua_gettop(L);
+
+  if (top > 0) then
+    lua_pop(L, top);
+
+  //push result
+  lua_pushnumber(L, LyricsState.MidBeat);
+  Result := 1; //one result
+end;
+
+{ returns a table with following structure:
+    t[1..playercount] = rect of players ScoreBG: table(x, y, w, h) }
+function ULuaScreenSing_GetScoreBGRect(L: Plua_State): Integer; cdecl;
+  var
+    Top: Integer;
+    I: Integer;
+begin
+  Result := 1;
+
+  // pop arguments
+  Top := lua_getTop(L);
+  if (Top > 0) then
+    lua_pop(L, Top);
+
+  // create table
+  lua_createtable(L, Length(ScreenSing.Scores.Players), 0);
+
+  // fill w/ values
+  for I := 0 to High(ScreenSing.Scores.Players) do
+  begin
+    lua_pushInteger(L, I + 1);
+
+    if (ScreenSing.Scores.Players[I].Position = High(Byte)) then
+      // player has no position, prevent crash by pushing nil
+      lua_pushNil(L)
+    else
+      with ScreenSing.Scores.Positions[ScreenSing.Scores.Players[I].Position] do
+        lua_PushRect(L, BGX, BGY, BGW, BGH);
+
+
+    lua_settable(L, -3);
+  end;
+
+  // leave table on stack, it is our result
+end;
+
+{ returns a table with following structure:
+    t[1..playercount] = rect of players rating bar: table(x, y, w, h) }
+function ULuaScreenSing_GetRBRect(L: Plua_State): Integer; cdecl;
+  var
+    Top: Integer;
+    I: Integer;
+begin
+  Result := 1;
+
+  // pop arguments
+  Top := lua_getTop(L);
+  if (Top > 0) then
+    lua_pop(L, Top);
+
+  // create table
+  lua_createtable(L, Length(ScreenSing.Scores.Players), 0);
+
+  // fill w/ values
+  for I := 0 to High(ScreenSing.Scores.Players) do
+  begin
+    lua_pushInteger(L, I + 1);
+
+    if (ScreenSing.Scores.Players[I].Position = High(Byte)) then
+      // player has no position, prevent crash by pushing nil
+      lua_pushNil(L)
+    else
+      with ScreenSing.Scores.Positions[ScreenSing.Scores.Players[I].Position] do
+        lua_PushRect(L, RBX, RBY, RBW, RBH);
+
+
+    lua_settable(L, -3);
+  end;
+
+  // leave table on stack, it is our result
+end;
+
+{ finishes current song, if sing screen is not shown it will raise
+  an error }
+function ULuaScreenSing_Finish(L: Plua_State): Integer; cdecl;
+  var Top: Integer;
+begin
+  Result := 0;
+
+  // pop arguments
+  Top := lua_getTop(L);
+  if (Top > 0) then
+    lua_pop(L, Top);
+
+  if (Display.CurrentScreen^ = ScreenSing) then
+  begin
+    ScreenSing.EndSong;
+  end
+  else
+    LuaL_error(L, 'Usdx.ScreenSing.Finish is called, but sing screen is not shown.'); 
+end;
+
+{ ScreenSing.GetSettings - no arguments
+  returns a table filled with the data of TScreenSing }
+function ULuaScreenSing_GetSettings(L: Plua_State): Integer; cdecl;
+  var Top: Integer;
+begin
+  // pop arguments
+  Top := lua_getTop(L);
+  if (Top > 0) then
+    lua_pop(L, Top);
+
+  lua_createtable(L, 0, 3);
+
+  //fill table w/ info
+  lua_pushBoolean(L, ScreenSing.Settings.LyricsVisible);
+  lua_setField(L, -2, 'LyricsVisible');
+
+  lua_pushBinInt(L, ScreenSing.Settings.NotesVisible);
+  lua_setField(L, -2, 'NotesVisible');
+
+  lua_pushBinInt(L, ScreenSing.Settings.PlayerEnabled);
+  lua_setField(L, -2, 'PlayerEnabled');
+
+
+  Result := 1;
+end;
+
+{ ScreenSing.SetSettings - arguments: Table
+  sets all attributes of TScreenSing.Settings that are
+  unequal to nil in Table }
+function ULuaScreenSing_SetSettings(L: Plua_State): Integer; cdecl;
+  var
+    Key: String;
+begin
+  Result := 0;
+
+  // check for table on stack
+  luaL_checkType(L, 1, LUA_TTABLE);
+
+  // go through table elements
+  lua_pushNil(L);
+  while (lua_Next(L, 1) <> 0) do
+  begin
+    Key := lowercase(lua_ToString(L, -2));
+
+    if (Key = 'lyricsvisible') and (lua_isBoolean(L, -1)) then
+      ScreenSing.settings.LyricsVisible := lua_toBoolean(L, -1)
+    else if (Key = 'notesvisible') and (lua_isTable(L, -1)) then
+      ScreenSing.settings.NotesVisible := lua_toBinInt(L, -1)
+    else if (Key = 'playerenabled') and (lua_isTable(L, -1)) then
+      ScreenSing.settings.PlayerEnabled := lua_toBinInt(L, -1);
+
+    // pop value from stack so key is on top
+    lua_pop(L, 1);
+  end;
+
+  // clear stack from table
+  lua_pop(L, lua_gettop(L));
+
+  ScreenSing.ApplySettings;
+end;
+
+{ ScreenSing.GetSongLines - no arguments
+  returns a table filled with lines of the loaded song or
+  nil if no song is loaded (singscreen is not displayed)
+  structure of returned table:
+    array [1.."count of lines"]
+     \
+     | Start: integer - beat the line is displayed at (on top of lyrics display)
+     | Lyric: string  - full lyric of the line
+     | Notes: array [1.."count notes of this line"]
+     \
+      | Start: integer    - beat the note starts at
+      | Length: integer   - length in beats
+      | Tone: integer     - pitch that has to be sung, full range
+      | NoteType: integer - 0 for freestyle, 1 for normal, 2 for golden
+      | Text: string      - text of this fragment }
+function ULuaScreenSing_GetSongLines(L: Plua_State): Integer; cdecl;
+  var
+    I, J: Integer;
+begin
+  Result := 1;
+  if  (Length(Lines) >= 1) then
+  begin
+    lua_ClearStack(L);
+
+    if not lua_CheckStack(L, 7) then
+      luaL_Error(L, PChar('can''t allocate enough stack space in ULuaScreenSing_GetSongLines'));
+
+    // lines array table
+    lua_CreateTable(L, Length(Lines[0].Line), 0);
+
+    for I := 0 to High(Lines[0].Line) do
+    with Lines[0].Line[I] do
+    begin
+      lua_pushInteger(L, I+1);
+
+      // line struct table
+      lua_CreateTable(L, 0, 3);
+
+      // line start
+      lua_PushInteger(L, Start);
+      lua_SetField(L, -2, PChar('Start'));
+
+      // line lyric
+      lua_PushString(L, PChar(Lyric));
+      lua_SetField(L, -2, PChar('Lyric'));
+
+      //line notes array table
+      lua_CreateTable(L, Length(Note), 0);
+
+      for J := 0 to High(Note) do
+      begin
+        lua_PushInteger(L, J + 1);
+
+        // note struct table
+        lua_CreateTable(L, 0, 5);
+
+        // Notes[J+1].Start
+        lua_PushInteger(L, Note[J].Start);
+        lua_SetField(L, -2, PChar('Start'));
+
+        // Notes[J+1].Length
+        lua_PushInteger(L, Note[J].Length);
+        lua_SetField(L, -2, PChar('Length'));
+
+        // Notes[J+1].Tone
+        lua_PushInteger(L, Note[J].Tone);
+        lua_SetField(L, -2, PChar('Tone'));
+
+        // Notes[J+1].NoteType
+        lua_PushInteger(L, Integer(Note[J].NoteType));
+        lua_SetField(L, -2, PChar('NoteType'));
+
+        // Notes[J+1].Text
+        lua_PushString(L, PChar(Note[J].Text));
+        lua_SetField(L, -2, PChar('Text'));
+
+        lua_SetTable(L, -3);
+      end;
+
+      lua_SetField(L, -2, PChar('Notes'));
+
+      // save line to array table
+      lua_setTable(L, -3);
+    end;
+  end
+  else
+  begin
+    lua_ClearStack(L);
+    lua_pushNil(L);
+  end;
+end;
+
+end.
+\ No newline at end of file
diff --git a/src/lua/ULuaTextGL.pas b/src/lua/ULuaTextGL.pas
new file mode 100644
index 00000000..2e70a2c1
--- /dev/null
+++ b/src/lua/ULuaTextGL.pas
@@ -0,0 +1,148 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit ULuaTextGL;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+  TextGL,
+  SysUtils,
+  ULua;
+
+{ TextGl.Pos(X, Y: Float) : sets font position }
+function ULuaTextGL_Pos(L: Plua_State): Integer; cdecl;
+
+{ TextGl.Size(Size: Float) : sets font size }
+function ULuaTextGL_Size(L: Plua_State): Integer; cdecl;
+
+{ TextGl.Style(Style: int) : sets font style (from 0 to 3) }
+function ULuaTextGL_Style(L: Plua_State): Integer; cdecl;
+
+{ TextGl.Italic(isItalic: boolean) : sets if font is italic }
+function ULuaTextGL_Italic(L: Plua_State): Integer; cdecl;
+
+{ TextGl.Width(Text: String) : returns width of Text if printed
+  w/ current settings in pixels }
+function ULuaTextGL_Width(L: Plua_State): Integer; cdecl;
+
+{ TextGl.Print(Text: String) : prints text to screen w/ current
+  settings}
+function ULuaTextGL_Print(L: Plua_State): Integer; cdecl;
+
+const
+  ULuaTextGl_Lib_f: array [0..5] of lual_reg = (
+    (name:'Pos'; func:ULuaTextGl_Pos),
+    (name:'Size'; func:ULuaTextGl_Size),
+    (name:'Style'; func:ULuaTextGl_Style),
+    (name:'Italic'; func:ULuaTextGl_Italic),
+    (name:'Width'; func:ULuaTextGl_Width),
+    (name:'Print'; func:ULuaTextGl_Print)
+  );
+
+
+implementation
+
+{ TextGl.Pos(X, Y: Float) : sets font position }
+function ULuaTextGL_Pos(L: Plua_State): Integer; cdecl;
+  var X, Y: Double;
+begin
+  X := luaL_checknumber(L, 1);
+  Y := luaL_checknumber(L, 2);
+
+  SetFontPos(X, Y);
+
+  Result := 0;
+end;
+
+{ TextGl.Size(Size: Float) : sets font size }
+function ULuaTextGL_Size(L: Plua_State): Integer; cdecl;
+  var Size: Double;
+begin
+  Size := luaL_checknumber(L, 1);
+
+  SetFontSize(Size);
+  
+  Result := 0;
+end;
+
+{ TextGl.Style(Style: int) : sets font style (from 0 to 3) }
+function ULuaTextGL_Style(L: Plua_State): Integer; cdecl;
+  var Style: Integer;
+begin
+  Style := luaL_checkinteger(L, 1);
+
+  if (Style >= 0) and (Style < Length(Fonts)) then
+    SetFontStyle(Style)
+  else
+    luaL_ArgError(L, 1, PChar('number from 0 to ' + IntToStr(High(Fonts)) + ' expected'));
+
+  Result := 0;
+end;
+
+{ TextGl.Italic(isItalic: boolean) : sets if font is italic }
+function ULuaTextGL_Italic(L: Plua_State): Integer; cdecl;
+  var isItalic: Boolean;
+begin
+  luaL_checkany(L, 1);
+  isItalic := lua_toBoolean(L, 1);
+
+  SetFontItalic(isItalic);
+  
+  Result := 0;
+end;
+
+{ TextGl.Width(Text: String) : returns width of Text if printed
+  w/ current settings in pixels }
+function ULuaTextGL_Width(L: Plua_State): Integer; cdecl;
+  var Text: String;
+begin
+  Text := luaL_checkstring(L, 1);
+  lua_pop(L, lua_gettop(L));
+
+  lua_PushNumber(L, glTextWidth(Text));
+
+  Result := 1;
+end;
+
+{ TextGl.Print(Text: String) : prints text to screen w/ current
+  settings}
+function ULuaTextGL_Print(L: Plua_State): Integer; cdecl;
+  var Text: String;
+begin
+  Text := luaL_checkstring(L, 1);
+
+  glPrint(Text);
+
+  Result := 0;
+end;
+
+end.
diff --git a/src/lua/ULuaTexture.pas b/src/lua/ULuaTexture.pas
new file mode 100644
index 00000000..931c0405
--- /dev/null
+++ b/src/lua/ULuaTexture.pas
@@ -0,0 +1,63 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit ULuaTexture;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses
+  SysUtils,
+  ULua,
+  UTexture;
+
+function luaopen_Texture (L: Plua_State): Integer; cdecl;
+
+function ULuaTexture_Dummy(L: Plua_State): Integer; cdecl;
+
+implementation
+
+function ULuaTexture_Dummy(L: Plua_State): Integer; cdecl;
+begin
+  result:=0; // number of results
+end;
+
+const
+  ULuaTexture_Lib_f: array [0..1] of lual_reg = (
+   (name:'Add';func:ULuaTexture_Dummy),
+   (name:nil;func:nil)
+   );
+
+function luaopen_Texture (L: Plua_State): Integer; cdecl;
+begin
+    luaL_register(L,'Texture',@ULuaTexture_Lib_f[0]);
+    result:=1;
+end;
+end.
diff --git a/src/lua/ULuaUsdx.pas b/src/lua/ULuaUsdx.pas
new file mode 100644
index 00000000..d92289b1
--- /dev/null
+++ b/src/lua/ULuaUsdx.pas
@@ -0,0 +1,145 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit ULuaUsdx;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses ULua;
+
+{ some basic lua c functions from usdx table }
+
+{ Usdx.Time - returns sdl_time to have time numbers comparable with
+              ultrastar deluxe ones. no arguments }
+function ULuaUsdx_Time(L: Plua_State): Integer; cdecl;
+
+{ Usdx.Version - returns Usdx version string (the same that US_Version
+  language-constant does). no arguments }
+function ULuaUsdx_Version(L: Plua_State): Integer; cdecl;
+
+{ Usdx.Hook - returns an hook table with name and Unhook function
+              arguments: event_name: string }
+function ULuaUsdx_Hook(L: Plua_State): Integer; cdecl;
+
+{ Usdx.ShutMeDown - no results, no arguments
+  unloads the calling plugin }
+function ULuaUsdx_ShutMeDown(L: Plua_State): Integer; cdecl;
+
+const
+  ULuaUsdx_Lib_f: array [0..4] of lual_reg = (
+    (name:'Version'; func:ULuaUsdx_Version),
+    (name:'Time'; func:ULuaUsdx_Time),
+    (name:'Hook'; func:ULuaUsdx_Hook),
+    (name:'ShutMeDown'; func:ULuaUsdx_ShutMeDown),
+    (name:nil;func:nil)
+  );
+
+implementation
+uses SDL, ULuaCore, ULuaUtils, UHookableEvent, UConfig;
+
+{ Usdx.Time - returns sdl_time to have time numbers comparable with
+              ultrastar deluxe ones. no arguments }
+function ULuaUsdx_Time(L: Plua_State): Integer; cdecl;
+  var top: Integer;
+begin
+  //remove arguments (if any)
+  top := lua_gettop(L);
+
+  if (top > 0) then
+    lua_pop(L, top);
+
+  //push result
+  lua_pushinteger(L, SDL_GetTicks);
+  Result := 1; //one result
+end;
+
+{ Usdx.Version - returns Usdx version string (the same that US_Version
+  language-constant does). no arguments }
+function ULuaUsdx_Version(L: Plua_State): Integer; cdecl;
+  var top: Integer;
+begin
+  //remove arguments (if any)
+  top := lua_gettop(L);
+
+  if (top > 0) then
+    lua_pop(L, top);
+
+  //push result
+  lua_pushstring(L, PChar(USDXVersionStr()));
+  Result := 1; //one result
+end;
+
+{ Usdx.Hook - returns an hook table with name and Unhook function
+              arguments: event_name: string; function_name: string }
+function ULuaUsdx_Hook(L: Plua_State): Integer; cdecl;
+var
+  EventName: String;
+  FunctionName: String;
+  P: TLuaPlugin;
+  Event: THookableEvent;
+begin
+  EventName := luaL_checkstring(L, 1);
+  FunctionName := luaL_checkstring(L, 2);
+
+  P := Lua_GetOwner(L);
+
+  lua_pop(L, lua_gettop(L)); //clear stack
+
+  Result := 1;
+
+  Event := LuaCore.GetEventByName(EventName);
+  if (Event <> nil) then
+  begin
+    Event.Hook(L, P.Id, FunctionName);
+  end
+  else
+    luaL_error(L, PChar('event does not exist: ' + EventName));
+end;
+
+function ULuaUsdx_ShutMeDown(L: Plua_State): Integer; cdecl;
+  var
+    top: Integer;
+    P: TLuaPlugin;
+begin
+  Result := 0;
+  
+  //remove arguments (if any)
+  top := lua_gettop(L);
+
+  if (top > 0) then
+    lua_pop(L, top);
+
+  P := Lua_GetOwner(L);
+
+  P.ShutMeDown;
+end;
+
+end.
+\ No newline at end of file
diff --git a/src/lua/ULuaUtils.pas b/src/lua/ULuaUtils.pas
new file mode 100644
index 00000000..143b34d4
--- /dev/null
+++ b/src/lua/ULuaUtils.pas
@@ -0,0 +1,186 @@
+{* UltraStar Deluxe - Karaoke Game
+ *
+ * UltraStar Deluxe is the legal property of its developers, whose names
+ * are too numerous to list here. Please refer to the COPYRIGHT
+ * file distributed with this source distribution.
+ *
+ * This program 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 2
+ * of the License, or (at your option) any later version.
+ *
+ * This program 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 this program; see the file COPYING. If not, write to
+ * the Free Software Foundation, Inc., 51 Franklin Street, Fifth Floor,
+ * Boston, MA 02110-1301, USA.
+ *
+ * $URL$
+ * $Id$
+ *}
+
+unit ULuaUtils;
+
+interface
+
+{$IFDEF FPC}
+  {$MODE Delphi}
+{$ENDIF}
+
+{$I switches.inc}
+
+uses ULua, ULuaCore;
+
+{ converts a lua table with a structure like:
+    * = 1 , * = 4 , * = 5
+  to an integer with the value:
+    0b11001
+  does not pop anything }
+function Lua_ToBinInt(L: PLua_State; idx: Integer): Integer;
+
+{ converts an integer with the value:
+    0b11001
+  to a lua table with a structure like:
+    * = 1 , * = 4 , * = 5
+  and pushed the table onto the stack }
+procedure Lua_PushBinInt(L: PLua_State; BinInt: Integer);
+
+{ pushes a table with position and size of a rectangle
+  t.x => position of the rectangle in pixels at x-axis
+  t.y => position of the rectangle in pixels at y-axis
+  t.w => width of the rectangle
+  t.h => height of the rectangle }
+procedure Lua_PushRect(L: PLua_State; X, Y, W, H: Double);
+
+{ returns plugin that is the owner of the given state
+  may raise a lua error if the parent id is not found
+  in states registry, if state owner does not exists
+  or is not loaded. So a check for a nil value is not
+  necessary }
+function Lua_GetOwner(L: PLua_State): TLuaPlugin;
+
+{ this is a helper in case an evenet owner don't has no use for the results
+  returns number of popped elements }
+function Lua_ClearStack(L: Plua_State): Integer;
+
+
+implementation
+
+{ converts a lua table with a structure like:
+    * = 1 , * = 4 , * = 5
+  to an integer with the value:
+    0b11001
+  does not pop anything }
+function Lua_ToBinInt(L: PLua_State; idx: Integer): Integer;
+  var
+    I: Integer;
+begin
+  // default: no bits set
+  Result := 0;
+
+  lua_checkstack(L, 2);
+
+  if (idx < 0) then
+    dec(idx); // we will push one value before using this
+
+  lua_PushNil(L);
+  while (lua_next(L, idx) <> 0) do
+  begin
+    if (lua_isNumber(L, -1)) then
+    begin //check if we got an integer value from 1 to 32
+      I := lua_toInteger(L, -1);
+      if (I >= 1) and (I <= 32) then
+        Result := Result or 1 shl (I - 1);
+    end;
+
+    // pop value, so key is on top
+    lua_pop(L, 1);
+  end;
+end;
+
+{ converts an integer with the value:
+    0b11001
+  to a lua table with a structure like:
+    * = 1 , * = 4 , * = 5
+  and pushed the table onto the stack }
+procedure Lua_PushBinInt(L: PLua_State; BinInt: Integer);
+var
+  I, Index: Integer;
+begin
+  lua_newTable(L);
+
+
+  Index := 1; //< lua starts w/ index 1
+  for I := 0 to 31 do
+    if (BinInt and (1 shl I) <> 0) then
+    begin
+      lua_pushInteger(L, Index);
+      lua_pushInteger(L, I);
+      lua_settable(L, -3);
+
+      Inc(Index);
+    end;
+end;
+
+{ pushes a table with position and size of a rectangle
+  t.x => position of the rectangle in pixels at x-axis
+  t.y => position of the rectangle in pixels at y-axis
+  t.w => width of the rectangle
+  t.h => height of the rectangle }
+procedure Lua_PushRect(L: PLua_State; X, Y, W, H: Double);
+begin
+  lua_createtable(L, 0, 4); // table w/ 4 record fields
+
+  // x pos
+  lua_pushNumber(L, X);
+  lua_setField(L, -2, 'x');
+
+  // y pos
+  lua_pushNumber(L, Y);
+  lua_setField(L, -2, 'y');
+
+  // width
+  lua_pushNumber(L, W);
+  lua_setField(L, -2, 'w');
+
+  // height
+  lua_pushNumber(L, H);
+  lua_setField(L, -2, 'h');
+end;
+
+{ returns plugin that is the owner of the given state
+  may raise a lua error if the parent id is not found
+  in states registry, if state owner does not exists
+  or is not loaded. So a check for a nil value is not
+  necessary }
+function Lua_GetOwner(L: PLua_State): TLuaPlugin;
+begin
+  lua_checkstack(L, 1);
+
+  lua_getfield (L, LUA_REGISTRYINDEX, '_USDX_STATE_ID');
+  if (not lua_isNumber(L, -1)) then
+    luaL_error(L, 'unable to get _USDX_STATE_ID');
+
+  Result := LuaCore.GetPluginById(lua_toInteger(L, -1));
+
+  lua_pop(L, 1); //< remove state id from stack
+
+  if (Result = nil) then
+    luaL_error(L, '_USDX_STATE_ID has invalid value')
+  else if (Result.Status > psRunning) then
+    luaL_error(L, 'owning plugin is not loaded or already unloaded in Lua_GetOwner');
+end;
+
+{ this is a helper in case an evenet owner don't has no use for the results
+  returns number of popped elements }
+function Lua_ClearStack(L: Plua_State): Integer;
+begin
+  Result := lua_gettop(L);
+  lua_pop(L, Result);
+end;
+
+end.
+\ No newline at end of file
author	tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>	2010-10-10 22:59:33 +0000
committer	tobigun <tobigun@b956fd51-792f-4845-bead-9b4dfca2ff2c>	2010-10-10 22:59:33 +0000
commit	35187604cef84864a908972d07361a5bd57e29ca (patch)
tree	dc95a8b1abeabd3a466729056ab8d37aaa6e72ea /src/lua
parent	58c1daf3692d4c5c534750a4fda97e087b0f0cbb (diff)
parent	02bd10f0798829ab69d2028b988cb2a54eae292a (diff)
download	usdx-github/svn/1.1.tar.gz usdx-github/svn/1.1.tar.xz usdx-github/svn/1.1.zip