texture.h

/* -*- Mode: C++; tab-width: 2; indent-tabs-mode: nil; c-basic-offset: 2 -*- */
/***************************************************************************
 *            texture.h
 *
 *  Fri Dec 17 10:58:05 CET 2004
 *  Copyright  2004  Jesper Fruergaard and Bent Bisballe
 *  {deva,jesper}@daimi.au.dk
 ****************************************************************************/

/*
 *  This program 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.
 *
 *  This program 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 Library General Public License for more details.
 *
 *  You should have received a copy of the GNU General Public License
 *  along with this program; if not, write to the Free Software
 *  Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA.
 */

#ifndef __LIBGPU_TEXTURE_H__
#define __LIBGPU_TEXTURE_H__

#include "glstuff.h"
//#include "cgstuff.h"
#include "types.h"

#include "gpu.h"

class FragmentProgram;

class Texture {
friend class Gpu;
friend class Kernel;
friend class Parameter;
public:
  Texture(int _width, int _height, int _bits = 32);
  ~Texture();

  void upload(float4 *data);

  void download(float4 *data);

  void clear(float4 *val = NULL);

  float4 reduce(FragmentProgram* prg);

  float4 max();

  float4 min();

  float4 avg();

  float4 sum();

  void show();

private:
  bool setup;
  GLuint getId();
  GLint getInternalFormat() {
    return internalFormat;
  }

  void grabPBuffer();

  bool is2Dtype() {
    return target == GL_TEXTURE_2D;
  }
  bool isRECTtype() {
    return target == GL_TEXTURE_RECTANGLE_NV;
  }

  int width;
  int height;
  int bits;
  GLint internalFormat;
  GLenum target;
  Gpu* gpu;
  GLuint id;
};


#endif/*__LIBGPU_TEXTURE_H__*/

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