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/*
* Mesa 3-D graphics library
* Version: 7.1
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
* Permission is hereby granted, free of charge, to any person obtaining a
* copy of this software and associated documentation files (the "Software"),
* to deal in the Software without restriction, including without limitation
* the rights to use, copy, modify, merge, publish, distribute, sublicense,
* and/or sell copies of the Software, and to permit persons to whom the
* Software is furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included
* in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
* CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
/**
* \mainpage Mesa GL API Module
*
* \section GLAPIIntroduction Introduction
*
* The Mesa GL API module is responsible for dispatching all the
* gl*() functions. All GL functions are dispatched by jumping through
* the current dispatch table (basically a struct full of function
* pointers.)
*
* A per-thread current dispatch table and per-thread current context
* pointer are managed by this module too.
*
* This module is intended to be non-Mesa-specific so it can be used
* with the X/DRI libGL also.
*/
#ifndef _GLAPI_H
#define _GLAPI_H
#define GL_GLEXT_PROTOTYPES
#if GLAMOR_GLES2
#include <GLES2/gl2.h>
#include <GLES2/gl2ext.h>
#else
#include <GL/gl.h>
#include "GL/glext.h"
#endif
/* Is this needed? It is incomplete anyway. */
#ifdef USE_MGL_NAMESPACE
#define _glapi_set_dispatch _mglapi_set_dispatch
#define _glapi_get_dispatch _mglapi_get_dispatch
#define _glapi_set_context _mglapi_set_context
#define _glapi_get_context _mglapi_get_context
#define _glapi_Dispatch _mglapi_Dispatch
#define _glapi_Context _mglapi_Context
#endif
typedef void (*_glapi_proc) (void);
struct _glapi_table;
#if defined (GLX_USE_TLS)
extern __thread struct _glapi_table *_glapi_tls_Dispatch
__attribute__ ((tls_model("initial-exec")));
extern __thread void *_glapi_tls_Context
__attribute__ ((tls_model("initial-exec")));
extern const struct _glapi_table *_glapi_Dispatch;
extern const void *_glapi_Context;
#define GET_DISPATCH() _glapi_tls_Dispatch
#define GET_CURRENT_CONTEXT(C) C = (typeof(C)) _glapi_tls_Context
#define SET_CURRENT_CONTEXT(C) _glapi_tls_Context = (void*)C
#else
extern struct _glapi_table *_glapi_Dispatch;
extern void *_glapi_Context;
#ifdef THREADS
#define GET_DISPATCH() \
(_X_LIKELY(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch())
#define GET_CURRENT_CONTEXT(C) C = (typeof(C)) \
(_X_LIKELY(_glapi_Context) ? _glapi_Context : _glapi_get_context())
#define SET_CURRENT_CONTEXT(C) do { if (_X_LIKELY(_glapi_Context)) \
_glapi_Context = (void*)C; \
else \
_glapi_set_context(C); } while(0)
#else
#define GET_DISPATCH() _glapi_Dispatch
#define GET_CURRENT_CONTEXT(C) C = (typeof(C)) _glapi_Context
#define SET_CURRENT_CONTEXT(C) _glapi_Context = (void*)C
#endif
#endif /* defined (GLX_USE_TLS) */
extern void
_glapi_set_context(void *context);
extern void *_glapi_get_context(void);
#endif
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