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/*************************************************************************
 *
 *  OpenOffice.org - a multi-platform office productivity suite
 *
 *  $RCSfile: salogl.h,v $
 *
 *  $Revision: 1.4 $
 *
 *  last change: $Author: rt $ $Date: 2005-09-09 12:46:10 $
 *
 *  The Contents of this file are made available subject to
 *  the terms of GNU Lesser General Public License Version 2.1.
 *
 *
 *    GNU Lesser General Public License Version 2.1
 *    =============================================
 *    Copyright 2005 by Sun Microsystems, Inc.
 *    901 San Antonio Road, Palo Alto, CA 94303, USA
 *
 *    This library is free software; you can redistribute it and/or
 *    modify it under the terms of the GNU Lesser General Public
 *    License version 2.1, as published by the Free Software Foundation.
 *
 *    This library 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
 *    Lesser General Public License for more details.
 *
 *    You should have received a copy of the GNU Lesser General Public
 *    License along with this library; if not, write to the Free Software
 *    Foundation, Inc., 59 Temple Place, Suite 330, Boston,
 *    MA  02111-1307  USA
 *
 ************************************************************************/

#ifndef _SV_SALOGL_H
#define _SV_SALOGL_H

#if defined EXPLICITLY_INCLUDE_GLX_H
#include <prex.h>
#define GL_H
#include <GL/glx.h>
#include <postx.h>
#else
typedef void* GLXContext;
typedef XID   GLXDrawable;
// needed GLX_ constants
#define GLX_USE_GL          1
#define GLX_DOUBLEBUFFER    5
#endif

#ifndef _SV_SALOGL_HXX
#include <salogl.hxx>
#endif

#ifndef _OSL_MODULE_H
#include <osl/module.h>
#endif

// -------------
// - SalOpenGL -
// -------------

class SalGraphics;

class X11SalOpenGL : public SalOpenGL
{
private:
    static oslModule        mpGLLib;
    static GLXContext       maGLXContext;
    static ULONG            mnOGLState;
    static Display*     mpDisplay;
    static XVisualInfo* mpVisualInfo;
    static BOOL         mbHaveGLVisual;

    static BOOL         ImplInit();

    static GLXContext (*pCreateContext)( Display *, XVisualInfo *, GLXContext, Bool );
    static void       (*pDestroyContext)( Display *, GLXContext );
    static GLXContext (*pGetCurrentContext)( );
    static Bool       (*pMakeCurrent)( Display *, GLXDrawable, GLXContext );
    static void     (*pSwapBuffers)( Display*, GLXDrawable );
    static int      (*pGetConfig)( Display*, XVisualInfo*, int, int* );
    static void     (*pFlush)();

    Drawable            maDrawable;

    static void* resolveSymbol( const char* pSym );
public:

    X11SalOpenGL( SalGraphics* pGraphics );
    ~X11SalOpenGL();

    static void     Release();
    static void     ReleaseLib();
    static void     MakeVisualWeights(
                                      Display *pDisplay,
                                      XVisualInfo* pInfos,
                                      int* pWeights,
                                      int nVisuals
                                      );

    // overload all pure virtual methods
    virtual bool        IsValid();
    virtual void*       GetOGLFnc( const char * );
    virtual void        OGLEntry( SalGraphics* pGraphics );
    virtual void        OGLExit( SalGraphics* pGraphics );
    virtual void        StartScene( SalGraphics* pGraphics );
    virtual void        StopScene();
};

#endif // _SV_SALOGL_H