IABSD.fr/xenocara/xserver/glx/glapi.h

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• Author : matthieu
  Date : 2008-11-02 15:26:08
  Hash : 60021fe9
  Message : xserver 1.5.2. tested by ckuethe@, oga@, and others.

• xserver/glx/glapi.h

• /*
   * Mesa 3-D graphics library
   * Version:  6.5
   *
   * Copyright (C) 1999-2006  Brian Paul   All Rights Reserved.
   *
   * Permission is hereby granted, free of charge, to any person obtaining a
   * copy of this software and associated documentation files (the "Software"),
   * to deal in the Software without restriction, including without limitation
   * the rights to use, copy, modify, merge, publish, distribute, sublicense,
   * and/or sell copies of the Software, and to permit persons to whom the
   * Software is furnished to do so, subject to the following conditions:
   *
   * The above copyright notice and this permission notice shall be included
   * in all copies or substantial portions of the Software.
   *
   * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
   * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
   * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
   * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
   * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
   * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
   */
  
  
  /**
   * \mainpage Mesa GL API Module
   *
   * \section GLAPIIntroduction Introduction
   *
   * The Mesa GL API module is responsible for dispatching all the
   * gl*() functions.  All GL functions are dispatched by jumping through
   * the current dispatch table (basically a struct full of function
   * pointers.)
   *
   * A per-thread current dispatch table and per-thread current context
   * pointer are managed by this module too.
   *
   * This module is intended to be non-Mesa-specific so it can be used
   * with the X/DRI libGL also.
   */
  
  
  #ifndef _GLAPI_H
  #define _GLAPI_H
  
  
  #include "GL/gl.h"
  #include "glapitable.h"
  #include "glthread.h"
  
  
  typedef void (*_glapi_warning_func)(void *ctx, const char *str, ...);
  
  
  #if defined(USE_MGL_NAMESPACE)
  #define _glapi_set_dispatch _mglapi_set_dispatch
  #define _glapi_get_dispatch _mglapi_get_dispatch
  #define _glapi_set_context _mglapi_set_context
  #define _glapi_get_context _mglapi_get_context
  #define _glapi_Context _mglapi_Context
  #define _glapi_Dispatch _mglapi_Dispatch
  #endif
  
  
  /**
   ** Define the GET_CURRENT_CONTEXT() macro.
   ** \param C local variable which will hold the current context.
   **/
  #if defined (GLX_USE_TLS)
  
  const extern void *_glapi_Context;
  const extern struct _glapi_table *_glapi_Dispatch;
  
  extern __thread void * _glapi_tls_Context
      __attribute__((tls_model("initial-exec")));
  
  # define GET_CURRENT_CONTEXT(C)  GLcontext *C = (GLcontext *) _glapi_tls_Context
  
  #else
  
  extern void *_glapi_Context;
  extern struct _glapi_table *_glapi_Dispatch;
  
  # ifdef THREADS
  #  define GET_CURRENT_CONTEXT(C)  GLcontext *C = (GLcontext *) (_glapi_Context ? _glapi_Context : _glapi_get_context())
  # else
  #  define GET_CURRENT_CONTEXT(C)  GLcontext *C = (GLcontext *) _glapi_Context
  # endif
  
  #endif /* defined (GLX_USE_TLS) */
  
  
  /**
   ** GL API public functions
   **/
  
  extern void
  _glapi_noop_enable_warnings(GLboolean enable);
  
  extern void
  _glapi_set_warning_func(_glapi_warning_func func);
  
  extern void
  _glapi_check_multithread(void);
  
  
  extern void
  _glapi_set_context(void *context);
  
  
  extern void *
  _glapi_get_context(void);
  
  
  extern void
  _glapi_set_dispatch(struct _glapi_table *dispatch);
  
  
  extern struct _glapi_table *
  _glapi_get_dispatch(void);
  
  
  extern int
  _glapi_begin_dispatch_override(struct _glapi_table *override);
  
  
  extern void
  _glapi_end_dispatch_override(int layer);
  
  
  struct _glapi_table *
  _glapi_get_override_dispatch(int layer);
  
  
  extern GLuint
  _glapi_get_dispatch_table_size(void);
  
  
  extern void
  _glapi_check_table(const struct _glapi_table *table);
  
  
  extern int
  _glapi_add_dispatch( const char * const * function_names,
  		     const char * parameter_signature );
  
  extern GLint
  _glapi_get_proc_offset(const char *funcName);
  
  
  extern _glapi_proc
  _glapi_get_proc_address(const char *funcName);
  
  
  extern const char *
  _glapi_get_proc_name(GLuint offset);
  
  
  #endif