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:  5.1
  24  *
  25  * Copyright (C) 1999-2003  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 #ifdef HAVE_CONFIG_H
  74 #include "conf.h"
  75 #endif
  76
  77
  78 #if defined(_WIN32) && !defined(__WIN32__) && !defined(__CYGWIN__)
  79 #       define __WIN32__
  80 #       define finite _finite
  81 #endif
  82
  83 #if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__))
  84 #  pragma warning( disable : 4068 ) /* unknown pragma */
  85 #  pragma warning( disable : 4710 ) /* function 'foo' not inlined */
  86 #  pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
  87 #  pragma warning( disable : 4127 ) /* conditional expression is constant */
  88 #  if defined(MESA_MINWARN)
  89 #    pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
  90 #    pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
  91 #    pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
  92 #    pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
  93 #    pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
  94 #  endif
  95 #  if defined(_MSC_VER) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
  96 #    define GLAPI __declspec(dllexport)
  97 #    define WGLAPI __declspec(dllexport)
  98 #  elif defined(_MSC_VER) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
  99 #    define GLAPI __declspec(dllimport)
 100 #    define WGLAPI __declspec(dllimport)
 101 #  else /* for use with static link lib build of Win32 edition only */
 102 #    define GLAPI extern
 103 #    define WGLAPI __declspec(dllimport)
 104 #  endif /* _STATIC_MESA support */
 105 #  define GLAPIENTRY __stdcall
 106 #  define GLAPIENTRYP __stdcall *
 107 #  define GLCALLBACK __stdcall
 108 #  define GLCALLBACKP __stdcall *
 109 #  if defined(__CYGWIN__)
 110 #    define GLCALLBACKPCAST *
 111 #  else
 112 #    define GLCALLBACKPCAST __stdcall *
 113 #  endif
 114 #  define GLWINAPI __stdcall
 115 #  define GLWINAPIV __cdecl
 116 #else
 117 /* non-Windows compilation */
 118 #  define GLAPI extern
 119 #  define GLAPIENTRY
 120 #  define GLAPIENTRYP *
 121 #  define GLCALLBACK
 122 #  define GLCALLBACKP *
 123 #  define GLCALLBACKPCAST *
 124 #  define GLWINAPI
 125 #  define GLWINAPIV
 126 #endif /* WIN32 / CYGWIN bracket */
 127
 128 /* compatibility guard so we don't need to change client code */
 129
 130 #if defined(_WIN32) && !defined(_WINDEF_) && !defined(_WINDEF_H) && !defined(_GNU_H_WINDOWS32_BASE) && !defined(OPENSTEP) && !defined(__CYGWIN__)
 131 #if 0
 132 #       define CALLBACK GLCALLBACK
 133 typedef void *HGLRC;
 134 typedef void *HDC;
 135 #endif
 136 typedef int (GLAPIENTRY *PROC)();
 137 typedef unsigned long COLORREF;
 138 #endif
 139
 140
 141 /* Make sure we include glext.h from gl.h */
 142 #define GL_GLEXT_PROTOTYPES
 143
 144
 145 #if defined(_WIN32) && !defined(_WINGDI_) && !defined(_WINGDI_H) && !defined(_GNU_H_WINDOWS32_DEFINES) && !defined(OPENSTEP)
 146 #       define WGL_FONT_LINES      0
 147 #       define WGL_FONT_POLYGONS   1
 148 #ifndef _GNU_H_WINDOWS32_FUNCTIONS
 149 #       ifdef UNICODE
 150 #               define wglUseFontBitmaps  wglUseFontBitmapsW
 151 #               define wglUseFontOutlines  wglUseFontOutlinesW
 152 #       else
 153 #               define wglUseFontBitmaps  wglUseFontBitmapsA
 154 #               define wglUseFontOutlines  wglUseFontOutlinesA
 155 #       endif /* !UNICODE */
 156 #endif /* _GNU_H_WINDOWS32_FUNCTIONS */
 157 typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;
 158 typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;
 159 typedef struct tagPIXELFORMATDESCRIPTOR PIXELFORMATDESCRIPTOR, *PPIXELFORMATDESCRIPTOR, *LPPIXELFORMATDESCRIPTOR;
 160 #if !defined(GLX_USE_MESA)
 161 #include <gl/mesa_wgl.h>
 162 #endif
 163 #endif
 164
 165
 166 /*
 167  * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN.
 168  * Do not use them unless absolutely necessary!
 169  * Try to use a runtime test instead.
 170  * For now, only used by some DRI hardware drivers for color/texel packing.
 171  */
 172 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
 173 #if defined(__linux__)
 174 #include <byteswap.h>
 175 #define CPU_TO_LE32( x )        bswap_32( x )
 176 #else /*__linux__*/
 177 #define CPU_TO_LE32( x )        ( x )  /* fix me for non-Linux big-endian! */
 178 #endif /*__linux__*/
 179 #define MESA_BIG_ENDIAN 1
 180 #else
 181 #define CPU_TO_LE32( x )        ( x )
 182 #define MESA_LITTLE_ENDIAN 1
 183 #endif
 184 #define LE32_TO_CPU( x )        CPU_TO_LE32( x )
 185
 186
 187 /* This is a macro on IRIX */
 188 #ifdef _P
 189 #undef _P
 190 #endif
 191
 192
 193
 194 #include "GL/gl.h"
 195 #include "GL/glext.h"
 196
 197
 198 #ifndef CAPI
 199 #ifdef WIN32
 200 #define CAPI _cdecl
 201 #else
 202 #define CAPI
 203 #endif
 204 #endif
 205 #include <GL/internal/glcore.h>
 206
 207
 208
 209 /* Disable unreachable code warnings for Watcom C++ */
 210 #ifdef  __WATCOMC__
 211 #pragma disable_message(201)
 212 #endif
 213
 214
 215 /* Turn off macro checking systems used by other libraries */
 216 #ifdef CHECK
 217 #undef CHECK
 218 #endif
 219
 220
 221 /* Create a macro so that asm functions can be linked into compilers other
 222  * than GNU C
 223  */
 224 #ifndef _ASMAPI
 225 #if !defined( __GNUC__ ) && !defined( VMS )
 226 #define _ASMAPI __cdecl
 227 #else
 228 #define _ASMAPI
 229 #endif
 230 #ifdef  PTR_DECL_IN_FRONT
 231 #define _ASMAPIP * _ASMAPI
 232 #else
 233 #define _ASMAPIP _ASMAPI *
 234 #endif
 235 #endif
 236
 237 #ifdef USE_X86_ASM
 238 #define _NORMAPI _ASMAPI
 239 #define _NORMAPIP _ASMAPIP
 240 #else
 241 #define _NORMAPI
 242 #define _NORMAPIP *
 243 #endif
 244
 245
 246 /* Function inlining */
 247 #if defined(__GNUC__)
 248 #  define INLINE __inline__
 249 #elif defined(__MSC__)
 250 #  define INLINE __inline
 251 #elif defined(_MSC_VER)
 252 #  define INLINE __inline
 253 #elif defined(__ICL)
 254 #  define INLINE __inline
 255 #else
 256 #  define INLINE
 257 #endif
 258
 259
 260 /*
 261  * Provide a reasonable replacement for __FUNCTION__ when using
 262  * non-GNU C compilers.
 263  */
 264 #if !defined(__GNUC__)
 265 #define STRINGIZE(x) #x
 266 #define STRINGIZE_EVAL(x) STRINGIZE(x)
 267 #define __FUNCTION__ STRINGIZE_EVAL(__FILE__) ", line " STRINGIZE_EVAL(__LINE__)
 268 #endif
 269
 270
 271 /* Some compilers don't like some of Mesa's const usage */
 272 #ifdef NO_CONST
 273 #  define CONST
 274 #else
 275 #  define CONST const
 276 #endif
 277
 278
 279 #ifdef DEBUG
 280 #  define ASSERT(X)   assert(X)
 281 #else
 282 #  define ASSERT(X)
 283 #endif
 284
 285
 286 /**
 287  * Sometimes we treat GLfloats as GLints.  On x86 systems, moving a float
 288  * as a int (thereby using integer registers instead of FP registers) is
 289  * a performance win.  Typically, this can be done with ordinary casts.
 290  * But with gcc's -fstrict-aliasing flag (which defaults to on in gcc 3.0)
 291  * these casts generate warnings.
 292  * The following union typedef is used to solve that.
 293  */
 294 typedef union { GLfloat f; GLint i; } fi_type;
 295
 296
 297 #include "config.h"
 298
 299 #endif /* GLHEADER_H */