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 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
21 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
22 * CONNECTION WITH THE SOFTWARE OR THE USE OR 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.
48 /* opengl.dll does not export _glapi_* */
50 #define _GLAPI_NO_EXPORTS
53 #ifdef _GLAPI_NO_EXPORTS
54 # define _GLAPI_EXPORT
55 #else /* _GLAPI_NO_EXPORTS */
57 # ifdef _GLAPI_DLL_EXPORTS
58 # define _GLAPI_EXPORT __declspec(dllexport)
60 # define _GLAPI_EXPORT __declspec(dllimport)
62 # elif defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590))
63 # define _GLAPI_EXPORT __attribute__((visibility("default")))
65 # define _GLAPI_EXPORT
67 #endif /* _GLAPI_NO_EXPORTS */
70 /* Is this needed? It is incomplete anyway. */
71 #ifdef USE_MGL_NAMESPACE
72 #define _glapi_set_dispatch _mglapi_set_dispatch
73 #define _glapi_get_dispatch _mglapi_get_dispatch
74 #define _glapi_set_context _mglapi_set_context
75 #define _glapi_get_context _mglapi_get_context
76 #define _glapi_Dispatch _mglapi_Dispatch
77 #define _glapi_Context _mglapi_Context
80 #include "glapi/glthread.h"
82 typedef void (*_glapi_proc
)(void);
86 #if defined (GLX_USE_TLS)
88 _GLAPI_EXPORT
extern __thread
struct _glapi_table
* _glapi_tls_Dispatch
89 __attribute__((tls_model("initial-exec")));
91 _GLAPI_EXPORT
extern __thread
void * _glapi_tls_Context
92 __attribute__((tls_model("initial-exec")));
94 _GLAPI_EXPORT
extern const struct _glapi_table
*_glapi_Dispatch
;
95 _GLAPI_EXPORT
extern const void *_glapi_Context
;
97 # define GET_DISPATCH() _glapi_tls_Dispatch
98 # define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_tls_Context
102 _GLAPI_EXPORT
extern struct _glapi_table
*_glapi_Dispatch
;
103 _GLAPI_EXPORT
extern void *_glapi_Context
;
107 # define GET_DISPATCH() \
108 (likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch())
110 # define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) \
111 (likely(_glapi_Context) ? _glapi_Context : _glapi_get_context())
115 # define GET_DISPATCH() _glapi_Dispatch
116 # define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_Context
120 #endif /* defined (GLX_USE_TLS) */
124 _glapi_destroy_multithread(void);
128 _glapi_check_multithread(void);
132 _glapi_set_context(void *context
);
136 _glapi_get_context(void);
140 _glapi_set_dispatch(struct _glapi_table
*dispatch
);
143 _GLAPI_EXPORT
struct _glapi_table
*
144 _glapi_get_dispatch(void);
147 _GLAPI_EXPORT
unsigned int
148 _glapi_get_dispatch_table_size(void);
152 _glapi_add_dispatch( const char * const * function_names
,
153 const char * parameter_signature
);
156 _glapi_get_proc_offset(const char *funcName
);
159 _GLAPI_EXPORT _glapi_proc
160 _glapi_get_proc_address(const char *funcName
);
163 _GLAPI_EXPORT
const char *
164 _glapi_get_proc_name(unsigned int offset
);
167 _GLAPI_EXPORT
unsigned long
168 _glthread_GetID(void);
172 * These stubs are kept so that the old DRI drivers still load.
175 _glapi_noop_enable_warnings(unsigned char enable
);
179 _glapi_set_warning_func(_glapi_proc func
);
182 #endif /* _GLAPI_H */