198 lines
5.0 KiB
C
198 lines
5.0 KiB
C
/*
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* Mesa 3-D graphics library
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*
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* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
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*
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* Permission is hereby granted, free of charge, to any person obtaining a
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* copy of this software and associated documentation files (the "Software"),
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* to deal in the Software without restriction, including without limitation
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* the rights to use, copy, modify, merge, publish, distribute, sublicense,
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* and/or sell copies of the Software, and to permit persons to whom the
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* Software is furnished to do so, subject to the following conditions:
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*
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* The above copyright notice and this permission notice shall be included
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* in all copies or substantial portions of the Software.
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*
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* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
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* OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
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* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
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* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR
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* OTHER LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE,
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* ARISING FROM, OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR
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* OTHER DEALINGS IN THE SOFTWARE.
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*/
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/**
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* \mainpage Mesa GL API Module
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*
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* \section GLAPIIntroduction Introduction
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*
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* The Mesa GL API module is responsible for dispatching all the
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* gl*() functions. All GL functions are dispatched by jumping through
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* the current dispatch table (basically a struct full of function
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* pointers.)
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*
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* A per-thread current dispatch table and per-thread current context
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* pointer are managed by this module too.
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*
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* This module is intended to be non-Mesa-specific so it can be used
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* with the X/DRI libGL also.
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*/
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#ifndef _GLAPI_H
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#define _GLAPI_H
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#include "util/macros.h"
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#include "util/u_thread.h"
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#ifdef __cplusplus
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extern "C" {
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#endif
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#ifdef _GLAPI_NO_EXPORTS
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# define _GLAPI_EXPORT
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#else /* _GLAPI_NO_EXPORTS */
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# ifdef _WIN32
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# ifdef _GLAPI_DLL_EXPORTS
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# define _GLAPI_EXPORT __declspec(dllexport)
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# else
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# define _GLAPI_EXPORT __declspec(dllimport)
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# endif
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# elif defined(__GNUC__)
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# define _GLAPI_EXPORT __attribute__((visibility("default")))
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# else
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# define _GLAPI_EXPORT
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# endif
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#endif /* _GLAPI_NO_EXPORTS */
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typedef void (*_glapi_proc)(void);
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typedef void (*_glapi_nop_handler_proc)(const char *name);
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struct _glapi_table;
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#if defined (USE_ELF_TLS)
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#ifdef _MSC_VER
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extern __declspec(thread) struct _glapi_table * _glapi_tls_Dispatch;
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extern __declspec(thread) void * _glapi_tls_Context;
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#else
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_GLAPI_EXPORT extern __THREAD_INITIAL_EXEC struct _glapi_table * _glapi_tls_Dispatch;
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_GLAPI_EXPORT extern __THREAD_INITIAL_EXEC void * _glapi_tls_Context;
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#endif
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_GLAPI_EXPORT extern const struct _glapi_table *_glapi_Dispatch;
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_GLAPI_EXPORT extern const void *_glapi_Context;
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#if defined (USE_TLS_BEHIND_FUNCTIONS)
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# define GET_DISPATCH() _glapi_get_dispatch()
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# define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_get_context()
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#else
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# define GET_DISPATCH() _glapi_tls_Dispatch
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# define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) _glapi_tls_Context
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#endif
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#else
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_GLAPI_EXPORT extern struct _glapi_table *_glapi_Dispatch;
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_GLAPI_EXPORT extern void *_glapi_Context;
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#define GET_DISPATCH() \
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(likely(_glapi_Dispatch) ? _glapi_Dispatch : _glapi_get_dispatch())
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#define GET_CURRENT_CONTEXT(C) struct gl_context *C = (struct gl_context *) \
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(likely(_glapi_Context) ? _glapi_Context : _glapi_get_context())
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#endif /* defined (USE_ELF_TLS) */
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_GLAPI_EXPORT void
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_glapi_destroy_multithread(void);
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_GLAPI_EXPORT void
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_glapi_check_multithread(void);
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_GLAPI_EXPORT void
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_glapi_set_context(void *context);
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_GLAPI_EXPORT void *
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_glapi_get_context(void);
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_GLAPI_EXPORT void
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_glapi_set_dispatch(struct _glapi_table *dispatch);
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_GLAPI_EXPORT struct _glapi_table *
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_glapi_get_dispatch(void);
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_GLAPI_EXPORT unsigned int
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_glapi_get_dispatch_table_size(void);
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_GLAPI_EXPORT int
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_glapi_add_dispatch( const char * const * function_names,
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const char * parameter_signature );
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_GLAPI_EXPORT int
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_glapi_get_proc_offset(const char *funcName);
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_GLAPI_EXPORT _glapi_proc
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_glapi_get_proc_address(const char *funcName);
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_GLAPI_EXPORT const char *
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_glapi_get_proc_name(unsigned int offset);
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#if defined(GLX_USE_APPLEGL) || defined(GLX_USE_WINDOWSGL)
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_GLAPI_EXPORT struct _glapi_table *
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_glapi_create_table_from_handle(void *handle, const char *symbol_prefix);
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_GLAPI_EXPORT void
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_glapi_table_patch(struct _glapi_table *, const char *name, void *wrapper);
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#endif
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_GLAPI_EXPORT void
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_glapi_set_nop_handler(_glapi_nop_handler_proc func);
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/** Return pointer to new dispatch table filled with no-op functions */
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_GLAPI_EXPORT struct _glapi_table *
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_glapi_new_nop_table(unsigned num_entries);
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/** Deprecated function */
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_GLAPI_EXPORT unsigned long
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_glthread_GetID(void);
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/*
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* These stubs are kept so that the old DRI drivers still load.
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*/
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_GLAPI_EXPORT void
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_glapi_noop_enable_warnings(unsigned char enable);
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_GLAPI_EXPORT void
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_glapi_set_warning_func(_glapi_proc func);
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#ifdef __cplusplus
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}
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#endif
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#endif /* _GLAPI_H */
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