mglfunctions.h

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/*
 * The ManaPlus Client
 * Copyright (C) 2012-2019 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/>.
 */
 
#ifndef RENDER_OPENGL_MGLFUNCTIONS_H
#define RENDER_OPENGL_MGLFUNCTIONS_H
 
#ifdef USE_OPENGL
 
#include "logger.h"
 
LOGGER_H
 
#ifdef WIN32
#define getFunction(name) wglGetProcAddress(name)
#elif defined ANDROID
#define getFunction(name) eglGetProcAddress(name)
#elif defined __APPLE__
#define getFunction(name) nullptr
#elif defined __native_client__
#define getFunction(name) glGetProcAddressREGAL(name)
#elif defined(__SWITCH__)
#define getFunction(name) SDL_GL_GetProcAddress(name)
#else // WIN32
#define getFunction(name) glXGetProcAddress(\
 reinterpret_cast<const GLubyte*>(name))
#endif // WIN32
 
#define assignFunction(func) \
 { \
 m##func = reinterpret_cast<func##_t>(getFunction(#func)); \
 if (m##func == nullptr) \
 logger->log("function not found: " #func); \
 else \
 logger->log("assigned function: " #func); \
 }
 
#define assignFunction3(func, ext) \
 { \
 m##func = reinterpret_cast<func##_t>(getFunction(#func#ext)); \
 if (m##func == nullptr) \
 { \
 logger->log("function not found: " #func#ext); \
 m##func = reinterpret_cast<func##_t>(getFunction(#func)); \
 if (m##func == nullptr) \
 logger->log("function not found: " #func); \
 else \
 logger->log("assigned function: " #func); \
 } \
 else \
 { \
 logger->log("assigned function: " #func#ext); \
 } \
 }
 
#define assignFunctionARB(func) assignFunction3(func, ARB)
 
#define assignFunctionEXT(func) assignFunction3(func, EXT)
 
#define assignFunction2(func, name) \
 { \
 m##func = reinterpret_cast<func##_t>(getFunction(name)); \
 if (m##func == nullptr) \
 logger->log(std::string("function not found: ") + name); \
 else \
 logger->log(std::string("assigned function: ") + name); \
 }
 
#define assignFunctionEmu2(func, name) \
 { \
 m##func = reinterpret_cast<func##_t>(getFunction(name)); \
 if (m##func == nullptr) \
 { \
 m##func = emu##func; \
 logger->log(std::string("emulated function: ") + name); \
 } \
 else \
 { \
 logger->log(std::string("assigned function: ") + name); \
 } \
 }
 
#define emulateFunction(func) m##func = emu##func; \
 logger->log("emulated function: " #func)
 
#endif // USE_OPENGL
#endif // RENDER_OPENGL_MGLFUNCTIONS_H