1 /* 2 * Mesa 3-D graphics library 3 * Version: 7.1 4 * 5 * Copyright (C) 1999-2008 Brian Paul All Rights Reserved. 6 * 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: 13 * 14 * The above copyright notice and this permission notice shall be included 15 * in all copies or substantial portions of the Software. 16 * 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. 23 */ 24 25 26 /** 27 * \mainpage Mesa GL API Module 28 * 29 * \section GLAPIIntroduction Introduction 30 * 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 34 * pointers.) 35 * 36 * A per-thread current dispatch table and per-thread current context 37 * pointer are managed by this module too. 38 * 39 * This module is intended to be non-Mesa-specific so it can be used 40 * with the X/DRI libGL also. 41 */ 42 43 44 #ifndef _GLAPI_H 45 #define _GLAPI_H 46 47 #include "glapi/glthread.h" 48 49 50 #ifdef __cplusplus 51 extern "C" { 52 #endif 53 54 55 #ifdef _GLAPI_NO_EXPORTS 56 # define _GLAPI_EXPORT 57 #else /* _GLAPI_NO_EXPORTS */ 58 # ifdef _WIN32 59 # ifdef _GLAPI_DLL_EXPORTS 60 # define _GLAPI_EXPORT __declspec(dllexport) 61 # else 62 # define _GLAPI_EXPORT __declspec(dllimport) 63 # endif 64 # elif defined(__GNUC__) || (defined(__SUNPRO_C) && (__SUNPRO_C >= 0x590)) 65 # define _GLAPI_EXPORT __attribute__((visibility("default"))) 66 # else 67 # define _GLAPI_EXPORT 68 # endif 69 #endif /* _GLAPI_NO_EXPORTS */ 70 71 72 /* Is this needed? It is incomplete anyway. */ 73 #ifdef USE_MGL_NAMESPACE 74 #define _glapi_set_dispatch _mglapi_set_dispatch 75 #define _glapi_get_dispatch _mglapi_get_dispatch 76 #define _glapi_set_context _mglapi_set_context 77 #define _glapi_get_context _mglapi_get_context 78 #define _glapi_Dispatch _mglapi_Dispatch 79 #define _glapi_Context _mglapi_Context 80 #endif 81 82 typedef void (*_glapi_proc)(void); 83 struct _glapi_table; 84 85 86 #if defined (GLX_USE_TLS) 87 88 _GLAPI_EXPORT extern __thread struct _glapi_table * _glapi_tls_Dispatch 89 __attribute__((tls_model("initial-exec"))); 90 91 _GLAPI_EXPORT extern __thread void * _glapi_tls_Context 92 __attribute__((tls_model("initial-exec"))); 93 94 _GLAPI_EXPORT extern const struct _glapi_table *_glapi_Dispatch; 95 _GLAPI_EXPORT extern const void *_glapi_Context; 96 97 # define GET_DISPATCH() _glapi_tls_Dispatch 98 # define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_tls_Context 99 100 #else 101 102 _GLAPI_EXPORT extern struct _glapi_table *_glapi_Dispatch; 103 _GLAPI_EXPORT extern void *_glapi_Context; 104 105 # ifdef THREADS 106 107 # define GET_DISPATCH() \ 108 (likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch()) 109 110 # define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) \ 111 (likely(_glapi_Context) ? _glapi_Context : _glapi_get_context()) 112 113 # else 114 115 # define GET_DISPATCH() _glapi_Dispatch 116 # define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_Context 117 118 # endif 119 120 #endif /* defined (GLX_USE_TLS) */ 121 122 123 void 124 _glapi_destroy_multithread(void); 125 126 127 _GLAPI_EXPORT void 128 _glapi_check_multithread(void); 129 130 131 _GLAPI_EXPORT void 132 _glapi_set_context(void *context); 133 134 135 _GLAPI_EXPORT void * 136 _glapi_get_context(void); 137 138 139 _GLAPI_EXPORT void 140 _glapi_set_dispatch(struct _glapi_table *dispatch); 141 142 143 _GLAPI_EXPORT struct _glapi_table * 144 _glapi_get_dispatch(void); 145 146 147 _GLAPI_EXPORT unsigned int 148 _glapi_get_dispatch_table_size(void); 149 150 151 _GLAPI_EXPORT int 152 _glapi_add_dispatch( const char * const * function_names, 153 const char * parameter_signature ); 154 155 _GLAPI_EXPORT int 156 _glapi_get_proc_offset(const char *funcName); 157 158 159 _GLAPI_EXPORT _glapi_proc 160 _glapi_get_proc_address(const char *funcName); 161 162 163 _GLAPI_EXPORT const char * 164 _glapi_get_proc_name(unsigned int offset); 165 166 167 _GLAPI_EXPORT struct _glapi_table * 168 _glapi_create_table_from_handle(void *handle, const char *symbol_prefix); 169 170 171 _GLAPI_EXPORT unsigned long 172 _glthread_GetID(void); 173 174 175 /* 176 * These stubs are kept so that the old DRI drivers still load. 177 */ 178 _GLAPI_EXPORT void 179 _glapi_noop_enable_warnings(unsigned char enable); 180 181 182 _GLAPI_EXPORT void 183 _glapi_set_warning_func(_glapi_proc func); 184 185 186 #ifdef __cplusplus 187 } 188 #endif 189 190 #endif /* _GLAPI_H */ 191
