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109 lines
2.3 KiB
Plaintext
109 lines
2.3 KiB
Plaintext
{
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$Id$
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Translation of the Mesa GLUT headers for FreePascal
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Linux Version, Copyright (C) 1999 Sebastian Guenther
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Mesa 3-D graphics library
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Version: 3.0
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Copyright (C) 1995-1998 Brian Paul
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This library is free software; you can redistribute it and/or
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modify it under the terms of the GNU Library General Public
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License as published by the Free Software Foundation; either
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version 2 of the License, or (at your option) any later version.
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This library is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
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Library General Public License for more details.
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You should have received a copy of the GNU Library General Public
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License along with this library; if not, write to the Free
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Software Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
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}
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{$MODE delphi}
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unit GLUT;
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interface
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{$MACRO ON}
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{$IFDEF Linux}
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{$DEFINE gldecl := cdecl;}
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{$DEFINE extdecl := cdecl;}
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uses GL;
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{$ELSE}
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{$MESSAGE Unsupported platform.}
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{$ENDIF}
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function InitGLUTFromLibrary(libname: PChar): Boolean;
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// determines automatically which library to use:
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function InitGLUT: Boolean;
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var
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GLUTDumpUnresolvedFunctions,
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GLUTInitialized: Boolean;
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%GLUTDeclsIF
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var
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%GLUTProcsPD
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implementation
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{$LINKLIB Xmu}
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function dlopen(AFile: PChar; mode: LongInt): Pointer; external 'dl';
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function dlclose(handle: Pointer): LongInt; external 'dl';
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function dlsym(handle: Pointer; name: PChar): Pointer; external 'dl';
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function LoadLibrary(name: PChar): Pointer;
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begin
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Result := dlopen(name, $101 {RTLD_GLOBAL or RTLD_LAZY});
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end;
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function GetProc(handle: Pointer; name: PChar): Pointer;
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begin
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Result := dlsym(handle, name);
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if (Result = nil) and GLUTDumpUnresolvedFunctions then
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WriteLn('Unresolved: ', name);
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end;
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var
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libGLUT: Pointer;
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function InitGLUTFromLibrary(libname: PChar): Boolean;
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begin
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Result := False;
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libGLUT := LoadLibrary(libname);
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if not Assigned(libGLUT) then exit;
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%GLUTProcsPL
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GLUTInitialized := True;
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Result := True;
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end;
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function InitGLUT: Boolean;
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begin
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Result := InitGLUTFromLibrary('libglut.so') or
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InitGLUTFromLibrary('libglut.so.3');
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end;
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initialization
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InitGLUT;
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finalization
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if Assigned(libGLUT) then dlClose(libGLUT);
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end.
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