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175b343ee6
J?rgen Tjern? If you #define NO_SDL_GLEXT before including SDL_opengl.h, it still includes the platform-provided glext.h. The comments indicate that this define is intended to be used when you provide your own glext.h (quote from SDL_opengl.h: "Define this if you have your own version of glext.h and want to disable the version included in SDL_opengl.h.") This is a problem because glext.h depends on the contents of gl.h, and it's practical to let SDL_opengl.h pick the right #include for gl.h for our platform.
88 lines
2.4 KiB
C
88 lines
2.4 KiB
C
/*
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Simple DirectMedia Layer
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Copyright (C) 1997-2014 Sam Lantinga <slouken@libsdl.org>
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This software is provided 'as-is', without any express or implied
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warranty. In no event will the authors be held liable for any damages
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arising from the use of this software.
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Permission is granted to anyone to use this software for any purpose,
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including commercial applications, and to alter it and redistribute it
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freely, subject to the following restrictions:
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1. The origin of this software must not be misrepresented; you must not
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claim that you wrote the original software. If you use this software
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in a product, an acknowledgment in the product documentation would be
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appreciated but is not required.
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2. Altered source versions must be plainly marked as such, and must not be
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misrepresented as being the original software.
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3. This notice may not be removed or altered from any source distribution.
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*/
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/**
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* \file SDL_opengl.h
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*
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* This is a simple file to encapsulate the OpenGL API headers.
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*/
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#ifndef _SDL_opengl_h
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#define _SDL_opengl_h
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#include "SDL_config.h"
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#ifndef __IPHONEOS__
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#ifdef __WIN32__
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#ifndef WIN32_LEAN_AND_MEAN
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#define WIN32_LEAN_AND_MEAN
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#endif
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#ifndef NOMINMAX
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#define NOMINMAX /* Don't defined min() and max() */
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#endif
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#include <windows.h>
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#endif
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#ifdef __glext_h_
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/* Someone has already included glext.h */
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#define NO_SDL_GLEXT
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#else
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#define _SDL_CLEAR_GLEXT_HEADERGUARD
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#define __glext_h_ /* Don't let gl.h include glext.h */
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#endif
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#if defined(__MACOSX__)
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#include <OpenGL/gl.h> /* Header File For The OpenGL Library */
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#define __X_GL_H
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#else
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#include <GL/gl.h> /* Header File For The OpenGL Library */
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#endif
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#ifdef _SDL_CLEAR_GLEXT_HEADERGUARD
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#undef __glext_h_
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#endif
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/**
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* \file SDL_opengl.h
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*
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* This file is included because glext.h is not available on some systems.
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* If you don't want this version included, simply define ::NO_SDL_GLEXT.
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*
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* The latest version is available from:
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* http://www.opengl.org/registry/
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*/
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/**
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* \def NO_SDL_GLEXT
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*
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* Define this if you have your own version of glext.h and want to disable the
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* version included in SDL_opengl.h.
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*/
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#if !defined(NO_SDL_GLEXT) && !defined(GL_GLEXT_LEGACY)
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#include "SDL_opengl_glext.h"
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#endif /* NO_SDL_GLEXT */
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#endif /* !__IPHONEOS__ */
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#endif /* _SDL_opengl_h */
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/* vi: set ts=4 sw=4 expandtab: */
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