checkGLError.h

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/****************************************************************************
* MeshLab                                                           o o     *
* An extendible mesh processor                                    o     o   *
*                                                                _   O  _   *
* Copyright(C) 2005, 2009                                          \/)\/    *
* Visual Computing Lab                                            /\/|      *
* ISTI - Italian National Research Council                           |      *
*                                                                    \      *
* All rights reserved.                                                      *
*                                                                           *
* 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 General Public License (http://www.gnu.org/licenses/gpl.txt)          *
* for more details.                                                         *
*                                                                           *
****************************************************************************/

#pragma once
#include <QMessageBox>
class checkGLError
{
public:
  static QString makeString(const char* m)
  {
    QString message(m);

    switch(glGetError()) {
    case GL_NO_ERROR: return QString();

    case GL_INVALID_ENUM:                     message+=("invalid enum");                  break;
    case GL_INVALID_VALUE:                    message+=("invalid value");                 break;
    case GL_INVALID_OPERATION:                message+=("invalid operation");             break;
    case GL_STACK_OVERFLOW:                   message+=("stack overflow");                break;
    case GL_STACK_UNDERFLOW:                  message+=("stack underflow");               break;
    case GL_OUT_OF_MEMORY:                    message+=("out of memory");                 break;
    case GL_INVALID_FRAMEBUFFER_OPERATION:    message+=("invalid framebuffer operation"); break;
    }
    return message;
  }

  static void debugInfo(const char* m) {
    QString message=makeString(m);
    if(message.isEmpty()) return;
    ::qDebug("%s",qPrintable(message));
  }

  static void QMessageBox(const char* m, const char* title) {
    QString message=makeString(m);
    QMessageBox::warning(0, title,message);
  }
  static void QMessageBox(const char* m) {QMessageBox(m,"GL error");}
};