150 lines
3.9 KiB
C
150 lines
3.9 KiB
C
/*
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* Mesa 3-D graphics library
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* Version: 7.1
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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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* BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
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* AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
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* CONNECTION WITH THE SOFTWARE OR THE USE OR 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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#define GL_GLEXT_PROTOTYPES
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#include "GL/gl.h"
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#include "GL/glext.h"
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#include "glthread.h"
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struct _glapi_table;
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typedef void (*_glapi_proc)(void); /* generic function pointer */
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typedef void (*_glapi_warning_func)(void *ctx, const char *str, ...);
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#if defined(USE_MGL_NAMESPACE)
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#define _glapi_set_dispatch _mglapi_set_dispatch
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#define _glapi_get_dispatch _mglapi_get_dispatch
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#define _glapi_set_context _mglapi_set_context
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#define _glapi_get_context _mglapi_get_context
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#define _glapi_Context _mglapi_Context
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#define _glapi_Dispatch _mglapi_Dispatch
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#endif
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/*
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* Number of extension functions which we can dynamically add at runtime.
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*/
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#define MAX_EXTENSION_FUNCS 300
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/**
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** Define the GET_CURRENT_CONTEXT() macro.
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** \param C local variable which will hold the current context.
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**/
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#if defined (GLX_USE_TLS)
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const extern void *_glapi_Context;
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const extern struct _glapi_table *_glapi_Dispatch;
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extern __thread void * _glapi_tls_Context
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__attribute__((tls_model("initial-exec")));
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# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_tls_Context
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#else
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extern void *_glapi_Context;
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extern struct _glapi_table *_glapi_Dispatch;
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# ifdef THREADS
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# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) (_glapi_Context ? _glapi_Context : _glapi_get_context())
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# else
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# define GET_CURRENT_CONTEXT(C) GLcontext *C = (GLcontext *) _glapi_Context
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# endif
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#endif /* defined (GLX_USE_TLS) */
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/**
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** GL API public functions
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**/
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extern void
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_glapi_noop_enable_warnings(GLboolean enable);
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extern void
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_glapi_set_warning_func(_glapi_warning_func func);
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extern void
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_glapi_check_multithread(void);
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extern void
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_glapi_set_context(void *context);
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extern void *
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_glapi_get_context(void);
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extern void
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_glapi_set_dispatch(struct _glapi_table *dispatch);
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extern struct _glapi_table *
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_glapi_get_dispatch(void);
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extern int
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_glapi_begin_dispatch_override(struct _glapi_table *override);
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extern void
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_glapi_end_dispatch_override(int layer);
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struct _glapi_table *
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_glapi_get_override_dispatch(int layer);
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extern GLuint
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_glapi_get_dispatch_table_size(void);
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extern 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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extern _glapi_proc
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_glapi_get_proc_address(const char *funcName);
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#endif
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