ProgramGPU.h

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//  File:       ProgramGPU.h
//  Author:     Changchang Wu
//  Description : Based class for GPU programs
//      ProgramGPU: base class of ProgramGLSL
//      FilterProgram:  base class of FilterGLSL, FilterPKSL
//
//  Copyright (c) 2007 University of North Carolina at Chapel Hill
//  All Rights Reserved
//
//  Permission to use, copy, modify and distribute this software and its
//  documentation for educational, research and non-profit purposes, without
//  fee, and without a written agreement is hereby granted, provided that the
//  above copyright notice and the following paragraph appear in all copies.
//  
//  The University of North Carolina at Chapel Hill make no representations
//  about the suitability of this software for any purpose. It is provided
//  'as is' without express or implied warranty. 
//
//  Please send BUG REPORTS to ccwu@cs.unc.edu
//
 
 
#ifndef _PROGRAM_GPU_H
#define _PROGRAM_GPU_H
 
//class     ProgramGPU
//description:  pure virtual class
//              provides a common interface for shader programs
class ProgramGPU
{
public:
    //use a gpu program
    virtual int     UseProgram() = 0;
    virtual void*   GetProgramID() = 0;
    //not used
    virtual ~ProgramGPU(){};
};
 
//class         FilterProgram
class  FilterProgram
{
public:
    ProgramGPU*  s_shader_h;
    ProgramGPU*  s_shader_v;
    int          _size;
    int          _id; 
public:
    FilterProgram()          {  s_shader_h = s_shader_v = NULL; _size = _id = 0; }
    virtual ~FilterProgram() {  if(s_shader_h) delete s_shader_h;   if(s_shader_v) delete s_shader_v;}
};
 
#endif