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/*
* Mesa 3-D graphics library
* Version: 6.3
*
* Copyright (C) 1999-2004 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
#include "GL/gl.h"
struct _glapi_table;
typedef void (*_glapi_warning_func)(void *ctx, const char *str, ...);
typedef void (*_glapi_proc)(void); /* generic function pointer */
#if defined (GLX_USE_TLS)
const extern void *_glapi_Context;
const extern struct _glapi_table *_glapi_Dispatch;
extern __thread void * _glapi_tls_Context
__attribute__((tls_model("initial-exec")));
# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_tls_Context
#else
extern void *_glapi_Context;
extern struct _glapi_table *_glapi_Dispatch;
/**
* Macro for declaration and fetching the current context.
*
* \param C local variable which will hold the current context.
*
* It should be used in the variable declaration area of a function:
* \code
* ...
* {
* GET_CURRENT_CONTEXT(ctx);
* ...
* \endcode
*/
# ifdef THREADS
# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) (_glapi_Context ? _glapi_Context : _glapi_get_context())
# else
# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_Context
# endif
#endif /* defined (GLX_USE_TLS) */
extern void
_glapi_noop_enable_warnings(GLboolean enable);
extern void
_glapi_set_warning_func(_glapi_warning_func func);
extern void
_glapi_check_multithread(void);
extern void
_glapi_set_context(void *context);
extern void *
_glapi_get_context(void);
extern void
_glapi_set_dispatch(struct _glapi_table *dispatch);
extern struct _glapi_table *
_glapi_get_dispatch(void);
extern int
_glapi_begin_dispatch_override(struct _glapi_table *override);
extern void
_glapi_end_dispatch_override(int layer);
struct _glapi_table *
_glapi_get_override_dispatch(int layer);
extern GLuint
_glapi_get_dispatch_table_size(void);
extern const char *
_glapi_get_version(void);
extern void
_glapi_check_table(const struct _glapi_table *table);
extern GLboolean
_glapi_add_entrypoint(const char *funcName, GLuint offset);
extern GLint
_glapi_get_proc_offset(const char *funcName);
extern const _glapi_proc
_glapi_get_proc_address(const char *funcName);
extern const char *
_glapi_get_proc_name(GLuint offset);
#endif
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