2 * Mesa 3-D graphics library
5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
7 * Permission is hereby granted, free of charge, to any person obtaining a
8 * copy of this software and associated documentation files (the "Software"),
9 * to deal in the Software without restriction, including without limitation
10 * the rights to use, copy, modify, merge, publish, distribute, sublicense,
11 * and/or sell copies of the Software, and to permit persons to whom the
12 * Software is furnished to do so, subject to the following conditions:
14 * The above copyright notice and this permission notice shall be included
15 * in all copies or substantial portions of the Software.
17 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
18 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
19 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
20 * THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
21 * OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
22 * ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
23 * OTHER DEALINGS IN THE SOFTWARE.
28 * \mainpage Mesa GL API Module
30 * \section GLAPIIntroduction Introduction
32 * The Mesa GL API module is responsible for dispatching all the
33 * gl*() functions. All GL functions are dispatched by jumping through
34 * the current dispatch table (basically a struct full of function
37 * A per-thread current dispatch table and per-thread current context
38 * pointer are managed by this module too.
40 * This module is intended to be non-Mesa-specific so it can be used
41 * with the X/DRI libGL also.
48 #include "glapi/glthread.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
;
108 # define GET_DISPATCH() \
109 (likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch())
111 # define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) \
112 (likely(_glapi_Context) ? _glapi_Context : _glapi_get_context())
116 # define GET_DISPATCH() _glapi_Dispatch
117 # define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_Context
121 #endif /* defined (GLX_USE_TLS) */
125 _glapi_destroy_multithread(void);
129 _glapi_check_multithread(void);
133 _glapi_set_context(void *context
);
137 _glapi_get_context(void);
141 _glapi_set_dispatch(struct _glapi_table
*dispatch
);
144 _GLAPI_EXPORT
struct _glapi_table
*
145 _glapi_get_dispatch(void);
148 _GLAPI_EXPORT
unsigned int
149 _glapi_get_dispatch_table_size(void);
153 _glapi_add_dispatch( const char * const * function_names
,
154 const char * parameter_signature
);
157 _glapi_get_proc_offset(const char *funcName
);
160 _GLAPI_EXPORT _glapi_proc
161 _glapi_get_proc_address(const char *funcName
);
164 _GLAPI_EXPORT
const char *
165 _glapi_get_proc_name(unsigned int offset
);
168 _GLAPI_EXPORT
struct _glapi_table
*
169 _glapi_create_table_from_handle(void *handle
, const char *symbol_prefix
);
172 _GLAPI_EXPORT
unsigned long
173 _glthread_GetID(void);
177 * These stubs are kept so that the old DRI drivers still load.
180 _glapi_noop_enable_warnings(unsigned char enable
);
184 _glapi_set_warning_func(_glapi_proc func
);
191 #endif /* _GLAPI_H */