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__) && !defined(BUILD_FOR_SNAP)
  79 #       define __WIN32__
  80 #       define finite _finite
  81 #endif
  82
  83 #if defined(__WATCOMC__)
  84 #       define finite _finite
  85 #endif
  86
  87 #if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__)) && !defined(BUILD_FOR_SNAP)
  88 #  pragma warning( disable : 4068 ) /* unknown pragma */
  89 #  pragma warning( disable : 4710 ) /* function 'foo' not inlined */
  90 #  pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
  91 #  pragma warning( disable : 4127 ) /* conditional expression is constant */
  92 #  if defined(MESA_MINWARN)
  93 #    pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
  94 #    pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
  95 #    pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
  96 #    pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
  97 #    pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
  98 #  endif
  99 #  if defined(_MSC_VER) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
 100 #    define GLAPI __declspec(dllexport)
 101 #    define WGLAPI __declspec(dllexport)
 102 #  elif defined(_MSC_VER) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
 103 #    define GLAPI __declspec(dllimport)
 104 #    define WGLAPI __declspec(dllimport)
 105 #  else /* for use with static link lib build of Win32 edition only */
 106 #    define GLAPI extern
 107 #    define WGLAPI __declspec(dllimport)
 108 #  endif /* _STATIC_MESA support */
 109 #  define GLAPIENTRY __stdcall
 110 #  define GLAPIENTRYP __stdcall *
 111 #  define GLCALLBACK __stdcall
 112 #  define GLCALLBACKP __stdcall *
 113 #  if defined(__CYGWIN__)
 114 #    define GLCALLBACKPCAST *
 115 #  else
 116 #    define GLCALLBACKPCAST __stdcall *
 117 #  endif
 118 #  define GLWINAPI __stdcall
 119 #  define GLWINAPIV __cdecl
 120 #elif !defined(BUILD_FOR_SNAP)
 121 /* non-Windows compilation */
 122 #  define GLAPI extern
 123 #  define GLAPIENTRY
 124 #  define GLAPIENTRYP *
 125 #  define GLCALLBACK
 126 #  define GLCALLBACKP *
 127 #  define GLCALLBACKPCAST *
 128 #  define GLWINAPI
 129 #  define GLWINAPIV
 130 #endif /* WIN32 / CYGWIN bracket */
 131
 132 /* compatibility guard so we don't need to change client code */
 133
 134 #if defined(_WIN32) && !defined(_WINDEF_) && !defined(_WINDEF_H) && !defined(_GNU_H_WINDOWS32_BASE) && !defined(OPENSTEP) && !defined(__CYGWIN__) && !defined(BUILD_FOR_SNAP)
 135 #if 0
 136 #       define CALLBACK GLCALLBACK
 137 typedef void *HGLRC;
 138 typedef void *HDC;
 139 #endif
 140 typedef int (GLAPIENTRY *PROC)();
 141 typedef unsigned long COLORREF;
 142 #endif
 143
 144
 145 /* Make sure we include glext.h from gl.h */
 146 #define GL_GLEXT_PROTOTYPES
 147
 148
 149 #if defined(_WIN32) && !defined(_WINGDI_) && !defined(_WINGDI_H) && !defined(_GNU_H_WINDOWS32_DEFINES) && !defined(OPENSTEP) && !defined(BUILD_FOR_SNAP)
 150 #       define WGL_FONT_LINES      0
 151 #       define WGL_FONT_POLYGONS   1
 152 #ifndef _GNU_H_WINDOWS32_FUNCTIONS
 153 #       ifdef UNICODE
 154 #               define wglUseFontBitmaps  wglUseFontBitmapsW
 155 #               define wglUseFontOutlines  wglUseFontOutlinesW
 156 #       else
 157 #               define wglUseFontBitmaps  wglUseFontBitmapsA
 158 #               define wglUseFontOutlines  wglUseFontOutlinesA
 159 #       endif /* !UNICODE */
 160 #endif /* _GNU_H_WINDOWS32_FUNCTIONS */
 161 typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;
 162 typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;
 163 typedef struct tagPIXELFORMATDESCRIPTOR PIXELFORMATDESCRIPTOR, *PPIXELFORMATDESCRIPTOR, *LPPIXELFORMATDESCRIPTOR;
 164 #if !defined(GLX_USE_MESA)
 165 #include <gl/mesa_wgl.h>
 166 #endif
 167 #endif
 168
 169
 170 /*
 171  * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN.
 172  * Do not use them unless absolutely necessary!
 173  * Try to use a runtime test instead.
 174  * For now, only used by some DRI hardware drivers for color/texel packing.
 175  */
 176 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
 177 #if defined(__linux__)
 178 #include <byteswap.h>
 179 #define CPU_TO_LE32( x )        bswap_32( x )
 180 #else /*__linux__*/
 181 #define CPU_TO_LE32( x )        ( x )  /* fix me for non-Linux big-endian! */
 182 #endif /*__linux__*/
 183 #define MESA_BIG_ENDIAN 1
 184 #else
 185 #define CPU_TO_LE32( x )        ( x )
 186 #define MESA_LITTLE_ENDIAN 1
 187 #endif
 188 #define LE32_TO_CPU( x )        CPU_TO_LE32( x )
 189
 190
 191 /* This is a macro on IRIX */
 192 #ifdef _P
 193 #undef _P
 194 #endif
 195
 196
 197
 198 #include "GL/gl.h"
 199 #include "GL/glext.h"
 200
 201
 202 #ifndef CAPI
 203 #if defined(WIN32) && !defined(BUILD_FOR_SNAP)
 204 #define CAPI _cdecl
 205 #else
 206 #define CAPI
 207 #endif
 208 #endif
 209 #include <GL/internal/glcore.h>
 210
 211
 212
 213 /* Disable unreachable code warnings for Watcom C++ */
 214 #ifdef  __WATCOMC__
 215 #pragma disable_message(201)
 216 #endif
 217
 218
 219 /* Turn off macro checking systems used by other libraries */
 220 #ifdef CHECK
 221 #undef CHECK
 222 #endif
 223
 224
 225 /* Create a macro so that asm functions can be linked into compilers other
 226  * than GNU C
 227  */
 228 #ifndef _ASMAPI
 229 #if !defined( __GNUC__ ) && !defined( VMS )
 230 #define _ASMAPI __cdecl
 231 #else
 232 #define _ASMAPI
 233 #endif
 234 #ifdef  PTR_DECL_IN_FRONT
 235 #define _ASMAPIP * _ASMAPI
 236 #else
 237 #define _ASMAPIP _ASMAPI *
 238 #endif
 239 #endif
 240
 241 #ifdef USE_X86_ASM
 242 #define _NORMAPI _ASMAPI
 243 #define _NORMAPIP _ASMAPIP
 244 #else
 245 #define _NORMAPI
 246 #define _NORMAPIP *
 247 #endif
 248
 249
 250 /* Function inlining */
 251 #if defined(__GNUC__)
 252 #  define INLINE __inline__
 253 #elif defined(__MSC__)
 254 #  define INLINE __inline
 255 #elif defined(_MSC_VER)
 256 #  define INLINE __inline
 257 #elif defined(__ICL)
 258 #  define INLINE __inline
 259 #elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
 260 #  define INLINE __inline
 261 #else
 262 #  define INLINE
 263 #endif
 264
 265
 266 /*
 267  * Provide a reasonable replacement for __FUNCTION__ when using
 268  * non-GNU C compilers. Watcom C/C++ 11.0 and later provide this also.
 269  */
 270 #if !defined(__GNUC__) && !(defined(__WATCOMC__) && (__WATCOMC__ >= 1100))
 271 #define STRINGIZE(x) #x
 272 #define STRINGIZE_EVAL(x) STRINGIZE(x)
 273 #define __FUNCTION__ STRINGIZE_EVAL(__FILE__) ", line " STRINGIZE_EVAL(__LINE__)
 274 #endif
 275
 276
 277 /* Some compilers don't like some of Mesa's const usage */
 278 #ifdef NO_CONST
 279 #  define CONST
 280 #else
 281 #  define CONST const
 282 #endif
 283
 284
 285 #if defined(BUILD_FOR_SNAP) && defined(CHECKED)
 286 #  define ASSERT(X)   _CHECK(X)
 287 #elif defined(DEBUG)
 288 #  define ASSERT(X)   assert(X)
 289 #else
 290 #  define ASSERT(X)
 291 #endif
 292
 293
 294 /**
 295  * Sometimes we treat GLfloats as GLints.  On x86 systems, moving a float
 296  * as a int (thereby using integer registers instead of FP registers) is
 297  * a performance win.  Typically, this can be done with ordinary casts.
 298  * But with gcc's -fstrict-aliasing flag (which defaults to on in gcc 3.0)
 299  * these casts generate warnings.
 300  * The following union typedef is used to solve that.
 301  */
 302 typedef union { GLfloat f; GLint i; } fi_type;
 303
 304
 305 #include "config.h"
 306
 307 #endif /* GLHEADER_H */