PackagedShader.h

Go to the documentation of this file.

//    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 __PACKAGEDSHADER_H__
#define __PACKAGEDSHADER_H__

#include "X3DShaderNode.h"
#include "X3DProgrammableShaderObject.h"
#include "X3DUrlObject.h"
#include <GL/glew.h>

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

namespace H3D {

  class H3DAPI_API PackagedShader : 
    public X3DShaderNode, 
    public X3DUrlObject,
    public X3DProgrammableShaderObject {
  public:
  
    PackagedShader( Inst< DisplayList  > _displayList = 0,
                    Inst< SFNode       > _metadata    = 0,
                    Inst< SFBool       > _isSelected  = 0,
                    Inst< SFBool       > _isValid     = 0,
                    Inst< SFBool       > _activate    = 0,
                    Inst< SFString     > _language    = 0,
                    Inst< MFString     > _url         = 0 );

    virtual bool isSupported() {
      const string &l = language->getValue();
      bool is_cg = 
        ( l == "CG" || l == "CG_OPENGL_ARB" || l == "CG_OPENGL_NV40" 
          || l == "CG_OPENGL_NV30" || l == "CG_OPENGL_NV20" );
#ifndef HAVE_CG
      if( is_cg ) {
        Console(4) << "Warning: H3D API compiled without cg support. ProgramShader "
                   << " node will not support CG." << endl;
      }
      return false;
#endif
      return is_cg;  
    }


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

    virtual void render();

    virtual void preRender();

    virtual void postRender();

    virtual void initCGShaderProgram();
#endif

    static H3DNodeDatabase database;

#ifdef HAVE_CG
  protected:
    CGprofile cg_vertex_profile;
    CGprofile cg_fragment_profile;
    CGcontext cg_context;
    CGprogram cg_vertex_program;
    CGprogram cg_fragment_program;
    string source_url;
#endif
  };
}

#endif

---