vertexProgARB.h

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//////////////////////////////////////////////////////////////////////
// 10/3/02      Joe M. Kniss    Scientific Computing and Imaging Institute
// School of Computing          University of Utah
//
//  This library is free software; you can redistribute it and/or
//  modify it under the terms of the GNU Lesser General Public
//  License as published by the Free Software Foundation; either
//  version 2.1 of the License, or (at your option) any later version.
//
//  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 __VERTEX_PROGRAM_ARB_DOT_H
#define __VERTEX_PROGRAM_ARB_DOT_H

#include "stateGLI.h"
#include "pbuffGlift.h"
#include <GL/glew.h>

namespace glift {

/////////////////////////////////////////////////////////////////////////
///
/// VertexProgARB.h: interface for the VertexProgARB class.
///
/// - Class for an ARB vertex programs.
///////////////////////////////////////////////////////////////////////

class VertexProgARB : public VertexShader
{
public:
   //construct a vertex program
   //  if isFileName is true, assumes the vertProg is a file, and tries to 
   //     read it, then loads the text in this file, othewize it assumes you
   //     passed in the string that is the vertex program itself
   VertexProgARB( const char *vertProg, 
                  bool isFileName = false, 
                  PBuffGlift* pbuff=NULL,
                  bool noload = false); 

   VertexProgARB( const VertexProgARB &rhs); 
   VertexProgARB& operator=( const VertexProgARB& rhs );


   virtual ~VertexProgARB();

   void         init();
   virtual void reset(); //Destroy OpenGL shader object and re-initialize shader.
   virtual void reload(const char *shader);

   virtual void setLocalConstf(unsigned int constNum, const gutz::vec4f& constant);
   virtual void setLocalConstd(unsigned int constNum, const gutz::vec4d& constant);

   virtual char *getProgText() { return m_vertProg; }
   virtual char *getProgFile() { return m_vertProgFile; }
   virtual void  setProgFile(const char *name);

protected:
   virtual void bindDef();
   virtual void releaseDef();

private:
   char        *m_vertProg;
   char        *m_vertProgFile;
   GLuint                m_shaderNum;           /// OpenGL shader object number
   PBuffGlift*   m_pbuff;                       /// The pbuffer context in which this shader exists (optional)
   int                   m_maxLocalParams;

   void destroy();
   void initMembers( const char *vertProg, bool isFileName, GLuint shaderNum, PBuffGlift* pbuff );
   void initMembers( const VertexProgARB &rhs);

};

typedef gutz::SmartPtr<VertexProgARB> VertexProgARBSP;

} //end namespace glift


#endif

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