forked from bartvdbraak/blender
113 lines
3.1 KiB
C
113 lines
3.1 KiB
C
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/*
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* ***** BEGIN GPL LICENSE BLOCK *****
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version 2
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* of the License, or (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program; if not, write to the Free Software Foundation,
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* Inc., 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301, USA.
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*
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* The Original Code is Copyright (C) 2014 Blender Foundation.
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* All rights reserved.
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*
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* The Original Code is: all of this file.
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*
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* Contributor(s): Jason Wilkins
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*
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* ***** END GPL LICENSE BLOCK *****
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*/
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/** \file glew-mx.h
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* \ingroup glew-mx
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*
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* Support for GLEW Multiple rendering conteXts (MX)
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* Maintained as a Blender Library.
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*
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* Different rendering contexts may have different entry points
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* to extension functions of the same name. So it can cause
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* problems if, for example, a second context uses a pointer to
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* say, glActiveTextureARB, that was queried from the first context.
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*
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* GLEW has basic support for multiple contexts by enabling WITH_GLEW_MX,
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* but it does not provide a full implementation. This is because
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* there are too many questions about thread safety and memory
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* allocation that are up to the user of GLEW.
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*
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* This implementation is very basic and isn't thread safe.
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* For a single context the overhead should be
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* no more than using GLEW without WITH_GLEW_MX enabled.
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*/
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#ifndef __GLEW_MX_H__
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#define __GLEW_MX_H__
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#ifdef WITH_GLEW_MX
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/* glew itself expects this */
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# define GLEW_MX 1
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# define glewGetContext() (&(_mx_context->glew_context))
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#endif
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#include <GL/glew.h>
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#ifdef __cplusplus
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extern "C" {
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#endif
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/* MXContext is used instead of GLEWContext directly so that
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extending what data is held by a context is easier.
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*/
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typedef struct MXContext {
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#ifdef WITH_GLEW_MX
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GLEWContext glew_context;
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#endif
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int reserved; /* structs need at least one member */
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} MXContext;
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#ifdef WITH_GLEW_MX
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extern MXContext *_mx_context;
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#endif
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#include "intern/symbol-binding.h"
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/* If compiling only for OpenGL 3.2 Core Profile then we should make sure
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* no legacy API entries or symbolic constants are used.
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*/
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#if defined(WITH_GL_PROFILE_CORE) && !defined(WITH_GL_PROFILE_COMPAT) && !defined(WITH_GL_PROFILE_ES20)
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# include "intern/gl-deprecated.h"
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#endif
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MXContext *mxCreateContext (void);
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MXContext *mxGetCurrentContext (void);
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void mxMakeCurrentContext(MXContext *ctx);
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void mxDestroyContext (MXContext *ctx);
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GLenum glew_chk(GLenum error, const char *file, int line, const char *text);
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#ifndef NDEBUG
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# define GLEW_CHK(x) glew_chk((x), __FILE__, __LINE__, #x)
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#else
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# define GLEW_CHK(x) glew_chk((x), NULL, 0, NULL)
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#endif
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#ifdef __cplusplus
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}
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#endif
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#endif /* __GLEW_MX_H__ */
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