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# GraphicsContext.hpp

    00001
    00002 //
    00003 // SFML - Simple and Fast Multimedia Library
    00004 // Copyright (C) 2007-2009 Laurent Gomila (laurent.gom@gmail.com)
    00005 //
    00006 // This software is provided 'as-is', without any express or implied warranty.
    00007 // In no event will the authors be held liable for any damages arising from the use of this software.
    00008 //
    00009 // Permission is granted to anyone to use this software for any purpose,
    00010 // including commercial applications, and to alter it and redistribute it freely,
    00011 // subject to the following restrictions:
    00012 //
    00013 // 1. The origin of this software must not be misrepresented;
    00014 //    you must not claim that you wrote the original software.
    00015 //    If you use this software in a product, an acknowledgment
    00016 //    in the product documentation would be appreciated but is not required.
    00017 //
    00018 // 2. Altered source versions must be plainly marked as such,
    00019 //    and must not be misrepresented as being the original software.
    00020 //
    00021 // 3. This notice may not be removed or altered from any source distribution.
    00022 //
    00024
    00025 #ifndef SFML_GRAPHICSCONTEXT_HPP
    00026 #define SFML_GRAPHICSCONTEXT_HPP
    00027
    00029 // Headers
    00031 #include <SFML/Config.hpp>
    00032 #include <SFML/System/NonCopyable.hpp>
    00033 #include <SFML/Graphics/GLEW/glew.h>
    00034 #include <iostream>
    00035 #include <string>
    00036
    00037
    00038 namespace sf
    00039 {
    00040 class Context;
    00041
    00042 namespace priv
    00043 {
    00052 class GraphicsContext : NonCopyable
    00053 {
    00054 public :
    00055
    00061     GraphicsContext();
    00062
    00068     ~GraphicsContext();
    00069
    00070 private :
    00071
    00073     // Member data
    00075     bool myActivated;
    00076 };
    00077
    00078 } // namespace priv
    00079
    00080
    00085 #ifdef SFML_DEBUG
    00086
    00087     // In debug mode, perform a test on every OpenGL call
    00088     #define GLCheck(Func) ((Func), GLCheckError(__FILE__, __LINE__))
    00089
    00090 #else
    00091
    00092     // Else, we don't add any overhead
    00093     #define GLCheck(Func) (Func)
    00094
    00095 #endif
    00096
    00097
    00102 inline void GLCheckError(const std::string& File, unsigned int Line)
    00103 {
    00104     // Get the last error
    00105     GLenum ErrorCode = glGetError();
    00106
    00107     if (ErrorCode != GL_NO_ERROR)
    00108     {
    00109         std::string Error = "unknown error";
    00110         std::string Desc  = "no description";
    00111
    00112         // Decode the error code
    00113         switch (ErrorCode)
    00114         {
    00115             case GL_INVALID_ENUM :
    00116             {
    00117                 Error = "GL_INVALID_ENUM";
    00118                 Desc  = "an unacceptable value has been specified for an enumerated argument";
    00119                 break;
    00120             }
    00121
    00122             case GL_INVALID_VALUE :
    00123             {
    00124                 Error = "GL_INVALID_VALUE";
    00125                 Desc  = "a numeric argument is out of range";
    00126                 break;
    00127             }
    00128
    00129             case GL_INVALID_OPERATION :
    00130             {
    00131                 Error = "GL_INVALID_OPERATION";
    00132                 Desc  = "the specified operation is not allowed in the current state";
    00133                 break;
    00134             }
    00135
    00136             case GL_STACK_OVERFLOW :
    00137             {
    00138                 Error = "GL_STACK_OVERFLOW";
    00139                 Desc  = "this command would cause a stack overflow";
    00140                 break;
    00141             }
    00142
    00143             case GL_STACK_UNDERFLOW :
    00144             {
    00145                 Error = "GL_STACK_UNDERFLOW";
    00146                 Desc  = "this command would cause a stack underflow";
    00147                 break;
    00148             }
    00149
    00150             case GL_OUT_OF_MEMORY :
    00151             {
    00152                 Error = "GL_OUT_OF_MEMORY";
    00153                 Desc  = "there is not enough memory left to execute the command";
    00154                 break;
    00155             }
    00156
    00157             case GL_INVALID_FRAMEBUFFER_OPERATION_EXT :
    00158             {
    00159                 Error = "GL_INVALID_FRAMEBUFFER_OPERATION_EXT";
    00160                 Desc  = "the object bound to FRAMEBUFFER_BINDING_EXT is not \"framebuffer complete\"";
    00161                 break;
    00162             }
    00163         }
    00164
    00165         // Log the error
    00166         std::cerr << "An internal OpenGL call failed in "
    00167                   << File.substr(File.find_last_of("\\/") + 1) << " (" << Line << ") : "
    00168                   << Error << ", " << Desc
    00169                   << std::endl;
    00170     }
    00171 }
    00172
    00173 } // namespace sf
    00174
    00175
    00176 #endif // SFML_GRAPHICSCONTEXT_HPP

:: Copyright © 2007-2008 Laurent Gomila, all rights reserved :: Documentation generated by doxygen 1.5.2 ::