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/*
* ***** BEGIN GPL LICENSE BLOCK *****
*
* 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 (at your option) 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, write to the Free Software Foundation,
* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
*
* The Original Code is Copyright (C) 2014 Blender Foundation.
* All rights reserved.
*
* The Original Code is: all of this file.
*
* Contributor(s): Jason Wilkins
*
* ***** END GPL LICENSE BLOCK *****
*/
/** \file glew-mx.h
* \ingroup glew-mx
*
* Support for GLEW Multiple rendering conteXts (MX)
* Maintained as a Blender Library.
*
* Different rendering contexts may have different entry points
* to extension functions of the same name. So it can cause
* problems if, for example, a second context uses a pointer to
* say, glActiveTextureARB, that was queried from the first context.
*
* GLEW has basic support for multiple contexts by enabling WITH_GLEW_MX,
* but it does not provide a full implementation. This is because
* there are too many questions about thread safety and memory
* allocation that are up to the user of GLEW.
*
* This implementation is very basic and isn't thread safe.
* For a single context the overhead should be
* no more than using GLEW without WITH_GLEW_MX enabled.
*/
#ifndef __GLEW_MX_H__
#define __GLEW_MX_H__
#ifdef WITH_GLEW_MX
/* glew itself expects this */
# define GLEW_MX 1
# define glewGetContext() (&(_mx_context->glew_context))
#endif
#include <GL/glew.h>
#ifdef __cplusplus
extern "C" {
#endif
/* MXContext is used instead of GLEWContext directly so that
extending what data is held by a context is easier.
*/
typedef struct MXContext {
#ifdef WITH_GLEW_MX
GLEWContext glew_context;
#endif
int reserved; /* structs need at least one member */
} MXContext;
#ifdef WITH_GLEW_MX
extern MXContext *_mx_context;
#endif
#include "intern/symbol-binding.h"
/* If compiling only for OpenGL 3.2 Core Profile then we should make sure
* no legacy API entries or symbolic constants are used.
*/
#if defined(WITH_GL_PROFILE_CORE) && !defined(WITH_GL_PROFILE_COMPAT) && !defined(WITH_GL_PROFILE_ES20)
# include "intern/gl-deprecated.h"
#endif
MXContext *mxCreateContext (void);
MXContext *mxGetCurrentContext (void);
void mxMakeCurrentContext(MXContext *ctx);
void mxDestroyContext (MXContext *ctx);
void mxIgnoreNoVersion(int ignore);
GLenum glew_chk(GLenum error, const char *file, int line, const char *text);
#ifndef NDEBUG
# define GLEW_CHK(x) glew_chk((x), __FILE__, __LINE__, #x)
#else
# define GLEW_CHK(x) glew_chk((x), NULL, 0, NULL)
#endif
#ifdef __cplusplus
}
#endif
#endif /* __GLEW_MX_H__ */
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