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/*
* Copyright (C) 2005-2022 Centre National d'Etudes Spatiales (CNES)
*
* This file is part of Orfeo Toolbox
*
* https://www.orfeo-toolbox.org/
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
#ifndef otb_GlError_h
#define otb_GlError_h
#include "OTBIceExport.h"
#ifdef _WIN32
# include <windows.h>
#endif
#include <GL/glew.h>
#include <cassert>
#include <iostream>
#include <stdexcept>
#include <sstream>
#ifdef _MSC_VER
#pragma warning(push)
#pragma warning(disable: 4275) // warning C4275: non-DLL-interface std::runtime_error used as base for DLL-interface Error
#endif
namespace otb { namespace gl {
/**
* @class OpenGL-specific exception.
*/
struct OTBIce_EXPORT Error : public std::runtime_error
{
/** Construct an OpenGL exception related to the OpenGL error code.
*/
Error( GLenum code ):
std::runtime_error(
[ code ]()
{
std::ostringstream oss;
oss << "OpenGL error #" << code << ": '" << gluErrorString( code ) << "'";
return oss.str();
}()
) {}
}; // End class GlError
enum class error : int
{
clear = 0,
trace,
assertion,
exception,
};
template< error E = error::exception >
GLenum
CheckError()
{
GLenum glError = glGetError();
if( E>=error::trace )
if( glError!=GL_NO_ERROR )
std::cerr
<< "OPenGL error #" << glError << ": '" << gluErrorString( glError ) << "'"
<< std::endl;
if( E>=error::assertion )
assert( glError==GL_NO_ERROR );
// When assert is removed (NDEBUG) and Throw is false, this function
// body is empty and the C++ compiler should optimize the call by
// removing it.
//
// N.B.: equivalent of a scoped (and breakpoint-friendly) macro.
// Condition is split because first is determined at compile time
// and may be removed (see above) and second is determined at
// runtime.
if( E>=error::exception )
if( glError!=GL_NO_ERROR )
throw Error( glError );
return glError;
}
} // End of namespace gl.
} // End namespace otb.
#ifdef _MSC_VER
#pragma warning(pop)
#endif
#endif // otb_GlError_h
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