env.cpp

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/*
 * The ManaPlus Client
 * Copyright (C) 2011-2019 The ManaPlus Developers
 * Copyright (C) 2019-2021 Andrei Karas
 *
 * This file is part of The ManaPlus Client.
 *
 * 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
 * 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 for more details.
 *
 * You should have received a copy of the GNU General Public License
 * along with this program. If not, see <http://www.gnu.org/licenses/>.
 */
 
#include "utils/env.h"
 
#include "configuration.h"
#include "logger.h"
#include "settings.h"
 
#include "debug.h"
 
void updateEnv()
{
#if defined(WIN32) || defined(__APPLE__)
 if (config.getBoolValue("centerwindow"))
 setEnv("SDL_VIDEO_CENTERED", "1");
 else
 setEnv("SDL_VIDEO_CENTERED", "0");
#endif // defined(WIN32) || defined(__APPLE__)
 
#ifndef WIN32
 const int vsync = settings.options.test.empty()
 ? config.getIntValue("vsync") : 1;
 // __GL_SYNC_TO_VBLANK is nvidia variable.
 // vblank_mode is MESA variable.
 switch (vsync)
 {
 case 1:
 setEnv("__GL_SYNC_TO_VBLANK", "0");
 setEnv("vblank_mode", "0");
 break;
 case 2:
 setEnv("__GL_SYNC_TO_VBLANK", "1");
 setEnv("vblank_mode", "2");
 break;
 default:
 break;
 }
#endif // WIN32
}
 
void setEnv(const char *const name, const char *const value)
{
 if ((name == nullptr) || (value == nullptr))
 return;
#ifdef WIN32
 if (putenv(const_cast<char*>((std::string(name)
 + "=" + value).c_str())))
#else // WIN32
 
 if (setenv(name, value, 1) != 0)
#endif // WIN32
 {
 logger->log("setenv failed: %s=%s", name, value);
 }
}