MeVis/ThirdParty/Sources/Inventor/inventor/lib/mevis/include/Inventor/misc/SoVBO.h

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/*
 *
 *  Copyright (C) 2011 MeVis Medical Solutions AG  All Rights Reserved.
 *
 *  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.
 *
 *  Further, this software is distributed without any warranty that it is
 *  free of the rightful claim of any third person regarding infringement
 *  or the like.  Any license provided herein, whether implied or
 *  otherwise, applies only to this software file.  Patent licenses, if
 *  any, provided herein do not apply to combinations of this program with
 *  other software, or any other product whatsoever.
 *
 *  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
 *
 *  Contact information: MeVis, Center for Medical Diagnostic Systems and
 *  Visualization GmbH, Universitätsallee 29, D-28359 Bremen, GERMANY, or:
 *
 *  http://www.mevis.de
 *
 */

/*
 Author: Florian Link
 Date:   09-2011
*/

#ifndef _SO_VBO_
#define _SO_VBO_

#include <Inventor/SbBasic.h>
#include <Inventor/system/SbOpenGL.h>

class SoState;
class SoGLDisplayList;

class INVENTOR_API SoVBO
{
public:
  SoVBO(GLenum type);
  ~SoVBO();

  static bool shouldUseVBO(SoState* state, int numData);

  static bool isVertexArrayRenderingAllowed();

  bool bind(SoState* state);

  void unbind();

  void setData(int numBytes, const void* data, int nodeId, SoState* state);

  uint32_t getDataId() const { return _nodeId; }

  void clearData();

  const void* getData() const { return _data; }

  void freeGL(SoState* state = NULL);

  bool hasSwappedRGBAData() const { return _hasSwappedRGBAData; }

  void copyAndSwapPackedRGBA(SoState* state);

private:
  void allocateData(int numBytes, int nodeId, SoState* state);

  void copyAndSwapPackedRGBA(int numValues, const uint32_t* values, int nodeId, SoState* state);

  GLenum _type;

  const void* _data;
  int      _numBytes;
  uint32_t _nodeId;

  SoGLDisplayList* _glBuffer;

  bool _ownsData;
  bool _hasSwappedRGBAData;
  bool _hadGLError;

  static int _vboMinimumSizeLimit;
  static int _vboMaximumSizeLimit;
};

#endif