src/mesa/main/glheader.h

   1 /**
   2  * \file glheader.h
   3  * Top-most include file.
   4  *
   5  * This is the top-most include file of the Mesa sources.
   6  * It includes gl.h and all system headers which are needed.
   7  * Other Mesa source files should \e not directly include any system
   8  * headers.  This allows Mesa to be integrated into XFree86 and
   9  * allows system-dependent hacks/workarounds to be collected in one place.
  10  *
  11  * \note Actually, a lot of system-dependent stuff is now in imports.[ch].
  12  *
  13  * If you touch this file, everything gets recompiled!
  14  *
  15  * This file should be included before any other header in the .c files.
  16  *
  17  * Put compiler/OS/assembly pragmas and macros here to avoid
  18  * cluttering other source files.
  19  */
  20
  21 /*
  22  * Mesa 3-D graphics library
  23  * Version:  6.3
  24  *
  25  * Copyright (C) 1999-2005  Brian Paul   All Rights Reserved.
  26  *
  27  * Permission is hereby granted, free of charge, to any person obtaining a
  28  * copy of this software and associated documentation files (the "Software"),
  29  * to deal in the Software without restriction, including without limitation
  30  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  31  * and/or sell copies of the Software, and to permit persons to whom the
  32  * Software is furnished to do so, subject to the following conditions:
  33  *
  34  * The above copyright notice and this permission notice shall be included
  35  * in all copies or substantial portions of the Software.
  36  *
  37  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  38  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  39  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  40  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  41  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  42  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  43  */
  44
  45
  46 #ifndef GLHEADER_H
  47 #define GLHEADER_H
  48
  49
  50 #if defined(XFree86LOADER) && defined(IN_MODULE)
  51 #include "xf86_ansic.h"
  52 #else
  53 #include <assert.h>
  54 #include <ctype.h>
  55 /* If we can use Compaq's Fast Math Library on Alpha */
  56 #if defined(__alpha__) && defined(CCPML)
  57 #include <cpml.h>
  58 #else
  59 #include <math.h>
  60 #endif
  61 #include <limits.h>
  62 #include <stdlib.h>
  63 #include <stdio.h>
  64 #include <string.h>
  65 #if defined(__linux__) && defined(__i386__)
  66 #include <fpu_control.h>
  67 #endif
  68 #endif
  69 #include <float.h>
  70 #include <stdarg.h>
  71
  72
  73 /* This is no longer uses since we dumped autoconf/automake! */
  74 #ifdef HAVE_CONFIG_H
  75 #include "conf.h"
  76 #endif
  77
  78 /* Get typedefs for uintptr_t and friends */
  79 #if defined(_WIN32)
  80 #include <BaseTsd.h>
  81 #if _MSC_VER == 1200
  82 typedef UINT_PTR uintptr_t;
  83 #endif
  84 #if defined(__MINGW32__)
  85 #include <stdint.h>
  86 #endif
  87 #else
  88 #include <inttypes.h>
  89 #endif
  90
  91 #if defined(_WIN32) && !defined(__WIN32__) && !defined(__CYGWIN__) && !defined(BUILD_FOR_SNAP)
  92 #  define __WIN32__
  93 #  define finite _finite
  94 #endif
  95
  96 #if defined(__WATCOMC__)
  97 #  define finite _finite
  98 #  pragma disable_message(201) /* Disable unreachable code warnings */
  99 #endif
 100
 101
 102 #if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__)) && !defined(BUILD_FOR_SNAP)
 103 #  if !defined(__GNUC__) /* mingw environment */
 104 #    pragma warning( disable : 4068 ) /* unknown pragma */
 105 #    pragma warning( disable : 4710 ) /* function 'foo' not inlined */
 106 #    pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
 107 #    pragma warning( disable : 4127 ) /* conditional expression is constant */
 108 #    if defined(MESA_MINWARN)
 109 #      pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
 110 #      pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
 111 #      pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
 112 #      pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
 113 #      pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
 114 #    endif
 115 #  endif
 116 #  if (defined(_MSC_VER) || defined(__MINGW32__)) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
 117 #    define WGLAPI __declspec(dllexport)
 118 #  elif (defined(_MSC_VER) || defined(__MINGW32__)) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
 119 #    define WGLAPI __declspec(dllimport)
 120 #  else /* for use with static link lib build of Win32 edition only */
 121 #    define WGLAPI __declspec(dllimport)
 122 #  endif /* _STATIC_MESA support */
 123 #endif /* WIN32 / CYGWIN bracket */
 124
 125
 126 #ifndef __MINGW32__
 127 /* XXX why is this here?
 128  * It should probaby be somewhere in src/mesa/drivers/windows/
 129  */
 130 #if defined(_WIN32) && !defined(_WINGDI_) && !defined(_WINGDI_H) && !defined(_GNU_H_WINDOWS32_DEFINES) && !defined(OPENSTEP) && !defined(BUILD_FOR_SNAP)
 131 #       define WGL_FONT_LINES      0
 132 #       define WGL_FONT_POLYGONS   1
 133 #ifndef _GNU_H_WINDOWS32_FUNCTIONS
 134 #       ifdef UNICODE
 135 #               define wglUseFontBitmaps  wglUseFontBitmapsW
 136 #               define wglUseFontOutlines  wglUseFontOutlinesW
 137 #       else
 138 #               define wglUseFontBitmaps  wglUseFontBitmapsA
 139 #               define wglUseFontOutlines  wglUseFontOutlinesA
 140 #       endif /* !UNICODE */
 141 #endif /* _GNU_H_WINDOWS32_FUNCTIONS */
 142 typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;
 143 typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;
 144 typedef struct tagPIXELFORMATDESCRIPTOR PIXELFORMATDESCRIPTOR, *PPIXELFORMATDESCRIPTOR, *LPPIXELFORMATDESCRIPTOR;
 145 #if !defined(GLX_USE_MESA)
 146 #include <GL/mesa_wgl.h>
 147 #endif
 148 #endif
 149 #endif /* !__MINGW32__ */
 150
 151
 152 /*
 153  * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN.
 154  * Do not use them unless absolutely necessary!
 155  * Try to use a runtime test instead.
 156  * For now, only used by some DRI hardware drivers for color/texel packing.
 157  */
 158 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
 159 #if defined(__linux__)
 160 #include <byteswap.h>
 161 #define CPU_TO_LE32( x )        bswap_32( x )
 162 #else /*__linux__*/
 163 #define CPU_TO_LE32( x )        ( x )  /* fix me for non-Linux big-endian! */
 164 #endif /*__linux__*/
 165 #define MESA_BIG_ENDIAN 1
 166 #else
 167 #define CPU_TO_LE32( x )        ( x )
 168 #define MESA_LITTLE_ENDIAN 1
 169 #endif
 170 #define LE32_TO_CPU( x )        CPU_TO_LE32( x )
 171
 172
 173 #define GL_GLEXT_PROTOTYPES
 174 #include "GL/gl.h"
 175 #include "GL/glext.h"
 176
 177
 178 #if !defined(CAPI) && defined(WIN32) && !defined(BUILD_FOR_SNAP)
 179 #define CAPI _cdecl
 180 #endif
 181 #include <GL/internal/glcore.h>
 182
 183
 184 /* This is a macro on IRIX */
 185 #ifdef _P
 186 #undef _P
 187 #endif
 188
 189
 190 /* Turn off macro checking systems used by other libraries */
 191 #ifdef CHECK
 192 #undef CHECK
 193 #endif
 194
 195
 196 /* Create a macro so that asm functions can be linked into compilers other
 197  * than GNU C
 198  */
 199 #ifndef _ASMAPI
 200 #if defined(WIN32) && !defined(BUILD_FOR_SNAP)/* was: !defined( __GNUC__ ) && !defined( VMS ) && !defined( __INTEL_COMPILER )*/
 201 #define _ASMAPI __cdecl
 202 #else
 203 #define _ASMAPI
 204 #endif
 205 #ifdef  PTR_DECL_IN_FRONT
 206 #define _ASMAPIP * _ASMAPI
 207 #else
 208 #define _ASMAPIP _ASMAPI *
 209 #endif
 210 #endif
 211
 212 #ifdef USE_X86_ASM
 213 #define _NORMAPI _ASMAPI
 214 #define _NORMAPIP _ASMAPIP
 215 #else
 216 #define _NORMAPI
 217 #define _NORMAPIP *
 218 #endif
 219
 220
 221 /* Function inlining */
 222 #if defined(__GNUC__)
 223 #  define INLINE __inline__
 224 #elif defined(__MSC__)
 225 #  define INLINE __inline
 226 #elif defined(_MSC_VER)
 227 #  define INLINE __inline
 228 #elif defined(__ICL)
 229 #  define INLINE __inline
 230 #elif defined(__INTEL_COMPILER)
 231 #  define INLINE inline
 232 #elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
 233 #  define INLINE __inline
 234 #else
 235 #  define INLINE
 236 #endif
 237
 238
 239 /* If we build the library with gcc's -fvisibility=hidden flag, we'll
 240  * use the PUBLIC macro to mark functions that are to be exported.
 241  *
 242  * We also need to define a USED attribute, so the optimizer doesn't
 243  * inline a static function that we later use in an alias. - ajax
 244  */
 245 #if defined(__GNUC__) && (__GNUC__ * 100 + __GNUC_MINOR__) >= 303
 246 #  define PUBLIC __attribute__((visibility("default")))
 247 #  define USED __attribute__((used))
 248 #else
 249 #  define PUBLIC
 250 #  define USED
 251 #endif
 252
 253
 254 /* Some compilers don't like some of Mesa's const usage */
 255 #ifdef NO_CONST
 256 #  define CONST
 257 #else
 258 #  define CONST const
 259 #endif
 260
 261
 262 #if defined(BUILD_FOR_SNAP) && defined(CHECKED)
 263 #  define ASSERT(X)   _CHECK(X)
 264 #elif defined(DEBUG)
 265 #  define ASSERT(X)   assert(X)
 266 #else
 267 #  define ASSERT(X)
 268 #endif
 269
 270
 271 #if !defined __GNUC__ || __GNUC__ < 3
 272 #  define __builtin_expect(x, y) x
 273 #endif
 274
 275 /* Windows does not have the ffs() function */
 276 #if defined(_WIN32) && !defined(__MINGW32__)
 277 int INLINE ffs(int value)
 278 {
 279     int bit;
 280     if (value == 0)
 281         return 0;
 282     for (bit=1; !(value & 1); bit++)
 283         value >>= 1;
 284     return bit;
 285 }
 286 #endif
 287
 288
 289 /* The __FUNCTION__ gcc variable is generally only used for debugging.
 290  * If we're not using gcc, define __FUNCTION__ as a cpp symbol here.
 291  */
 292 #if defined(__VMS)
 293 #define __FUNCTION__ "VMS$NL:"
 294 #elif !(defined(__GNUC__) && __GNUC__ >= 2)
 295 #define __FUNCTION__ "unknown"
 296 #endif
 297
 298
 299 #include "config.h"
 300
 301 #endif /* GLHEADER_H */