2 * Mesa 3-D graphics library
4 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
6 * Permission is hereby granted, free of charge, to any person obtaining a
7 * copy of this software and associated documentation files (the "Software"),
8 * to deal in the Software without restriction, including without limitation
9 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
10 * and/or sell copies of the Software, and to permit persons to whom the
11 * Software is furnished to do so, subject to the following conditions:
13 * The above copyright notice and this permission notice shall be included
14 * in all copies or substantial portions of the Software.
16 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
17 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
18 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
19 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
20 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
21 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
22 * OTHER DEALINGS IN THE SOFTWARE.
27 * \mainpage Mesa GL API Module
29 * \section GLAPIIntroduction Introduction
31 * The Mesa GL API module is responsible for dispatching all the
32 * gl*() functions. All GL functions are dispatched by jumping through
33 * the current dispatch table (basically a struct full of function
36 * A per-thread current dispatch table and per-thread current context
37 * pointer are managed by this module too.
39 * This module is intended to be non-Mesa-specific so it can be used
40 * with the X/DRI libGL also.
47 #include "util/macros.h"
56 #ifdef _GLAPI_NO_EXPORTS
57 # define _GLAPI_EXPORT
58 #else /* _GLAPI_NO_EXPORTS */
60 # ifdef _GLAPI_DLL_EXPORTS
61 # define _GLAPI_EXPORT __declspec(dllexport)
63 # define _GLAPI_EXPORT __declspec(dllimport)
65 # elif defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
66 # define _GLAPI_EXPORT __attribute__((visibility("default")))
68 # define _GLAPI_EXPORT
70 #endif /* _GLAPI_NO_EXPORTS */
73 /* Is this needed? It is incomplete anyway. */
74 #ifdef USE_MGL_NAMESPACE
75 #define _glapi_set_dispatch _mglapi_set_dispatch
76 #define _glapi_get_dispatch _mglapi_get_dispatch
77 #define _glapi_set_context _mglapi_set_context
78 #define _glapi_get_context _mglapi_get_context
79 #define _glapi_Dispatch _mglapi_Dispatch
80 #define _glapi_Context _mglapi_Context
83 typedef void (*_glapi_proc
)(void);
87 #if defined (GLX_USE_TLS)
89 _GLAPI_EXPORT
extern __thread
struct _glapi_table
* _glapi_tls_Dispatch
90 __attribute__((tls_model("initial-exec")));
92 _GLAPI_EXPORT
extern __thread
void * _glapi_tls_Context
93 __attribute__((tls_model("initial-exec")));
95 _GLAPI_EXPORT
extern const struct _glapi_table
*_glapi_Dispatch
;
96 _GLAPI_EXPORT
extern const void *_glapi_Context
;
98 # define GET_DISPATCH() _glapi_tls_Dispatch
99 # define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_tls_Context
103 _GLAPI_EXPORT
extern struct _glapi_table
*_glapi_Dispatch
;
104 _GLAPI_EXPORT
extern void *_glapi_Context
;
106 #define GET_DISPATCH() \
107 (likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch())
109 #define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) \
110 (likely(_glapi_Context) ? _glapi_Context : _glapi_get_context())
112 #endif /* defined (GLX_USE_TLS) */
116 _glapi_destroy_multithread(void);
120 _glapi_check_multithread(void);
124 _glapi_set_context(void *context
);
128 _glapi_get_context(void);
132 _glapi_set_dispatch(struct _glapi_table
*dispatch
);
135 _GLAPI_EXPORT
struct _glapi_table
*
136 _glapi_get_dispatch(void);
139 _GLAPI_EXPORT
unsigned int
140 _glapi_get_dispatch_table_size(void);
144 _glapi_add_dispatch( const char * const * function_names
,
145 const char * parameter_signature
);
148 _glapi_get_proc_offset(const char *funcName
);
151 _GLAPI_EXPORT _glapi_proc
152 _glapi_get_proc_address(const char *funcName
);
155 _GLAPI_EXPORT
const char *
156 _glapi_get_proc_name(unsigned int offset
);
159 _GLAPI_EXPORT
struct _glapi_table
*
160 _glapi_create_table_from_handle(void *handle
, const char *symbol_prefix
);
163 /** Deprecated function */
164 _GLAPI_EXPORT
unsigned long
165 _glthread_GetID(void);
169 * These stubs are kept so that the old DRI drivers still load.
172 _glapi_noop_enable_warnings(unsigned char enable
);
176 _glapi_set_warning_func(_glapi_proc func
);
183 #endif /* _GLAPI_H */