ShaderProgram.h

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//    Copyright 2004, SenseGraphics AB
//
//    This file is part of H3D API.
//
//    H3D API 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.
//
//    H3D API 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 H3D API; if not, write to the Free Software
//    Foundation, Inc., 59 Temple Place, Suite 330, Boston, MA  02111-1307  USA
//
//    A commercial license is also available. Please contact us at 
//    www.sensegraphics.com for more information.
//
//
//
#ifndef __SHADERPROGRAM_H__
#define __SHADERPROGRAM_H__

#include "X3DNode.h"
#include "X3DUrlObject.h"
#include "X3DProgrammableShaderObject.h"
#include "H3DDisplayListObject.h"
#include "SFString.h"

#ifdef HAVE_CG
#include <GL/glew.h>
#include <Cg/cg.h>
#include <Cg/cgGL.h>
#endif

namespace H3D {

  class H3DAPI_API ShaderProgram : 
    public X3DNode, 
    public X3DUrlObject,
    public X3DProgrammableShaderObject,
    public H3DDisplayListObject {
  public:
  
    ShaderProgram( Inst< SFNode      > _metadata = 0,
                   Inst< DisplayList > _displayList = 0,
                   Inst< MFString    > _url      = 0,
                   Inst< SFString    > _type     = 0 );
    
#ifdef HAVE_CG

    virtual ~ShaderProgram();

    virtual void enableCGShaderProgram();

    virtual void disableCGShaderProgram();

    virtual void initCGShaderProgram();

    virtual void destroyCGShaderProgram(); 

    virtual void setCGProfile( const string &profile ); 

    virtual void render();

    virtual bool addField( const string &name,
                           const Field::AccessType &access,
                           Field *field );
#endif

    virtual string defaultXMLContainerField() {
      return "programs";
    }

    auto_ptr< SFString > type;

    static H3DNodeDatabase database;
    
  protected:
#ifdef HAVE_CG
    CGprofile cg_profile;
    CGcontext cg_context;
    CGprogram cg_program;
    string cg_profile_string;
    string source_url;
#endif
  };
}

#endif

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