glfw/lib/init.c

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//========================================================================
// GLFW - An OpenGL framework
// Platform: Any
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// API version: 3.0
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// WWW: http://www.glfw.org/
//------------------------------------------------------------------------
// Copyright (c) 2002-2006 Marcus Geelnard
// Copyright (c) 2006-2010 Camilla Berglund <elmindreda@elmindreda.org>
//
// This software is provided 'as-is', without any express or implied
// warranty. In no event will the authors be held liable for any damages
// arising from the use of this software.
//
// Permission is granted to anyone to use this software for any purpose,
// including commercial applications, and to alter it and redistribute it
// freely, subject to the following restrictions:
//
// 1. The origin of this software must not be misrepresented; you must not
// claim that you wrote the original software. If you use this software
// in a product, an acknowledgment in the product documentation would
// be appreciated but is not required.
//
// 2. Altered source versions must be plainly marked as such, and must not
// be misrepresented as being the original software.
//
// 3. This notice may not be removed or altered from any source
// distribution.
//
//========================================================================
#define _init_c_
#include "internal.h"
//************************************************************************
//**** GLFW user functions ****
//************************************************************************
//========================================================================
// Initialize various GLFW state
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//========================================================================
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GLFWAPI int glfwInit(void)
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{
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if (_glfwInitialized)
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return GL_TRUE;
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memset(&_glfwLibrary, 0, sizeof(_glfwLibrary));
memset(&_glfwWin, 0, sizeof(_glfwWin ));
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// Window is not yet opened
_glfwWin.opened = GL_FALSE;
// Default enable/disable settings
_glfwWin.sysKeysDisabled = GL_FALSE;
// Clear window hints
_glfwClearWindowHints();
// Platform specific initialization
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if (!_glfwPlatformInit())
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return GL_FALSE;
// Form now on, GLFW state is valid
_glfwInitialized = GL_TRUE;
return GL_TRUE;
}
//========================================================================
// Close window and shut down library
//========================================================================
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GLFWAPI void glfwTerminate(void)
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{
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if (!_glfwInitialized)
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return;
// Platform specific termination
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if (!_glfwPlatformTerminate())
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return;
// GLFW is no longer initialized
_glfwInitialized = GL_FALSE;
}
//========================================================================
// Get GLFW version
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//========================================================================
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GLFWAPI void glfwGetVersion(int* major, int* minor, int* rev)
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{
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if (major != NULL)
*major = GLFW_VERSION_MAJOR;
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if (minor != NULL)
*minor = GLFW_VERSION_MINOR;
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if (rev != NULL)
*rev = GLFW_VERSION_REVISION;
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}