src/libprojectM/Renderer/FBO.hpp

/**
 * projectM -- Milkdrop-esque visualisation SDK
 * Copyright (C)2003-2007 projectM Team
 *
 * 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
 * See 'LICENSE.txt' included within this release
 *
 */
/**
 * $Id: FBO.hpp,v 1.1.1.1 2005/12/23 18:05:00 psperl Exp $
 *
 * Opaque render target
 *
 */
#ifndef _RENDERTARGET_H
#define _RENDERTARGET_H

#ifdef MACOS
#include <OpenGL/gl.h>
#include <AGL/agl.h>
#endif /** MACOS */

#ifdef WIN32
#include <windows.h>
#endif /** WIN32 */

#ifdef LINUX
#ifdef USE_GLES1
#include <GLES/gl.h>
#include <GLES/glext.h>
#else
#include <GL/gl.h>
#include <GL/glx.h>
#endif
#endif


typedef enum {
  SCALE_NEAREST,
  SCALE_MAGNIFY,
  SCALE_MINIFY
} TextureScale;


class RenderTarget {
public:
  /** Texture size */
  int texsize;

  int useFBO;
  int renderToTexture;

  ~RenderTarget();

  RenderTarget( int texsize, int width, int height );
  void lock();
  void unlock();
  GLuint initRenderToTexture();
  int nearestPower2( int value, TextureScale scaleRule );
  void fallbackRescale(int width, int height);

  /** Opaque pbuffer context and pbuffer */
  /*
#ifdef MACOS
  void *origContext;
  void *pbufferContext;
  void *pbuffer;
#endif
  */
  /** Render target texture ID for non-pbuffer systems */
  GLuint textureID[3];
#ifdef USE_FBO
  GLuint fbuffer[2];
  GLuint depthb[2];
#endif
};


#endif /** !_RENDERTARGET_H */