Quadrotor

////////////////////////////////////////////////////////////////////////////

//        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