src/mesa/main/glheader.h

   1 /* $Id: glheader.h,v 1.28 2002/06/15 02:38:15 brianp Exp $ */
   2
   3 /*
   4  * Mesa 3-D graphics library
   5  * Version:  4.1
   6  *
   7  * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.
   8  *
   9  * Permission is hereby granted, free of charge, to any person obtaining a
  10  * copy of this software and associated documentation files (the "Software"),
  11  * to deal in the Software without restriction, including without limitation
  12  * the rights to use, copy, modify, merge, publish, distribute, sublicense,
  13  * and/or sell copies of the Software, and to permit persons to whom the
  14  * Software is furnished to do so, subject to the following conditions:
  15  *
  16  * The above copyright notice and this permission notice shall be included
  17  * in all copies or substantial portions of the Software.
  18  *
  19  * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS
  20  * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
  21  * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL
  22  * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN
  23  * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN
  24  * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
  25  */
  26
  27
  28 #ifndef GLHEADER_H
  29 #define GLHEADER_H
  30
  31
  32 /*
  33  * This is the top-most include file of the Mesa sources.
  34  * It includes gl.h and all system headers which are needed.
  35  * Other Mesa source files should _not_ directly include any system
  36  * headers.  This allows Mesa to be integrated into XFree86 and
  37  * allows system-dependent hacks/work-arounds to be collected in one place.
  38  *
  39  * If you touch this file, everything gets recompiled!
  40  *
  41  * This file should be included before any other header in the .c files.
  42  *
  43  * Put compiler/OS/assembly pragmas and macros here to avoid
  44  * cluttering other source files.
  45  */
  46
  47
  48
  49 #ifdef XFree86LOADER
  50 #include "xf86_ansic.h"
  51 #else
  52 #include <assert.h>
  53 #include <ctype.h>
  54 /* If we can use Compaq's Fast Math Library on Alpha */
  55 #if defined(__alpha__) && defined(CCPML)
  56 #include <cpml.h>
  57 #else
  58 #include <math.h>
  59 #endif
  60 #include <limits.h>
  61 #include <stdlib.h>
  62 #include <stdio.h>
  63 #include <string.h>
  64 #if defined(__linux__) && defined(__i386__)
  65 #include <fpu_control.h>
  66 #endif
  67 #endif
  68 #include <float.h>
  69 #include <stdarg.h>
  70
  71
  72 #ifdef HAVE_CONFIG_H
  73 #include "conf.h"
  74 #endif
  75
  76
  77 #if defined(_WIN32) && !defined(__WIN32__) && !defined(__CYGWIN__)
  78 #       define __WIN32__
  79 #       define finite _finite
  80 #endif
  81
  82 #if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__))
  83 #  pragma warning( disable : 4068 ) /* unknown pragma */
  84 #  pragma warning( disable : 4710 ) /* function 'foo' not inlined */
  85 #  pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */
  86 #  pragma warning( disable : 4127 ) /* conditional expression is constant */
  87 #  if defined(MESA_MINWARN)
  88 #    pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */
  89 #    pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */
  90 #    pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */
  91 #    pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */
  92 #    pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */
  93 #  endif
  94 #  if defined(_MSC_VER) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */
  95 #    define GLAPI __declspec(dllexport)
  96 #    define WGLAPI __declspec(dllexport)
  97 #  elif defined(_MSC_VER) && defined(_DLL) /* tag specifying we're building for DLL runtime support */
  98 #    define GLAPI __declspec(dllimport)
  99 #    define WGLAPI __declspec(dllimport)
 100 #  else /* for use with static link lib build of Win32 edition only */
 101 #    define GLAPI extern
 102 #    define WGLAPI __declspec(dllimport)
 103 #  endif /* _STATIC_MESA support */
 104 #  define GLAPIENTRY __stdcall
 105 #  define GLAPIENTRYP __stdcall *
 106 #  define GLCALLBACK __stdcall
 107 #  define GLCALLBACKP __stdcall *
 108 #  if defined(__CYGWIN__)
 109 #    define GLCALLBACKPCAST *
 110 #  else
 111 #    define GLCALLBACKPCAST __stdcall *
 112 #  endif
 113 #  define GLWINAPI __stdcall
 114 #  define GLWINAPIV __cdecl
 115 #else
 116 /* non-Windows compilation */
 117 #  define GLAPI extern
 118 #  define GLAPIENTRY
 119 #  define GLAPIENTRYP *
 120 #  define GLCALLBACK
 121 #  define GLCALLBACKP *
 122 #  define GLCALLBACKPCAST *
 123 #  define GLWINAPI
 124 #  define GLWINAPIV
 125 #endif /* WIN32 / CYGWIN bracket */
 126
 127 /* compatability guard so we don't need to change client code */
 128
 129 #if defined(_WIN32) && !defined(_WINDEF_) && !defined(_GNU_H_WINDOWS32_BASE) && !defined(OPENSTEP) && !defined(__CYGWIN__)
 130 #if 0
 131 #       define CALLBACK GLCALLBACK
 132 typedef void *HGLRC;
 133 typedef void *HDC;
 134 #endif
 135 typedef int (GLAPIENTRY *PROC)();
 136 typedef unsigned long COLORREF;
 137 #endif
 138
 139
 140 /* Make sure we include glext.h from gl.h */
 141 #define GL_GLEXT_PROTOTYPES
 142
 143
 144 #if defined(_WIN32) && !defined(_WINGDI_) && !defined(_GNU_H_WINDOWS32_DEFINES) && !defined(OPENSTEP)
 145 #       define WGL_FONT_LINES      0
 146 #       define WGL_FONT_POLYGONS   1
 147 #ifndef _GNU_H_WINDOWS32_FUNCTIONS
 148 #       ifdef UNICODE
 149 #               define wglUseFontBitmaps  wglUseFontBitmapsW
 150 #               define wglUseFontOutlines  wglUseFontOutlinesW
 151 #       else
 152 #               define wglUseFontBitmaps  wglUseFontBitmapsA
 153 #               define wglUseFontOutlines  wglUseFontOutlinesA
 154 #       endif /* !UNICODE */
 155 #endif /* _GNU_H_WINDOWS32_FUNCTIONS */
 156 typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;
 157 typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;
 158 typedef struct tagPIXELFORMATDESCRIPTOR PIXELFORMATDESCRIPTOR, *PPIXELFORMATDESCRIPTOR, *LPPIXELFORMATDESCRIPTOR;
 159 #if !defined(GLX_USE_MESA)
 160 #include <gl/mesa_wgl.h>
 161 #endif
 162 #endif
 163
 164
 165 /*
 166  * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN.
 167  * Do not use them unless absolutely necessary!
 168  * Try to use a runtime test instead.
 169  * For now, only used by some DRI hardware drivers for color/texel packing.
 170  */
 171 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
 172 #if defined(__linux__)
 173 #include <byteswap.h>
 174 #define CPU_TO_LE32( x )        bswap_32( x )
 175 #else /*__linux__*/
 176 #define CPU_TO_LE32( x )        ( x )  /* fix me for non-Linux big-endian! */
 177 #endif /*__linux__*/
 178 #define MESA_BIG_ENDIAN 1
 179 #else
 180 #define CPU_TO_LE32( x )        ( x )
 181 #define MESA_LITTLE_ENDIAN 1
 182 #endif
 183 #define LE32_TO_CPU( x )        CPU_TO_LE32( x )
 184
 185
 186 /* This is a macro on IRIX */
 187 #ifdef _P
 188 #undef _P
 189 #endif
 190
 191
 192
 193 #include "GL/gl.h"
 194 #include "GL/glext.h"
 195
 196
 197 #ifndef CAPI
 198 #ifdef WIN32
 199 #define CAPI _cdecl
 200 #else
 201 #define CAPI
 202 #endif
 203 #endif
 204 #include <GL/internal/glcore.h>
 205
 206
 207
 208 /* Disable unreachable code warnings for Watcom C++ */
 209 #ifdef  __WATCOMC__
 210 #pragma disable_message(201)
 211 #endif
 212
 213
 214 /* Turn off macro checking systems used by other libraries */
 215 #ifdef CHECK
 216 #undef CHECK
 217 #endif
 218
 219
 220 /* Create a macro so that asm functions can be linked into compilers other
 221  * than GNU C
 222  */
 223 #ifndef _ASMAPI
 224 #if !defined( __GNUC__ ) && !defined( VMS )
 225 #define _ASMAPI __cdecl
 226 #else
 227 #define _ASMAPI
 228 #endif
 229 #ifdef  PTR_DECL_IN_FRONT
 230 #define _ASMAPIP * _ASMAPI
 231 #else
 232 #define _ASMAPIP _ASMAPI *
 233 #endif
 234 #endif
 235
 236 #ifdef USE_X86_ASM
 237 #define _NORMAPI _ASMAPI
 238 #define _NORMAPIP _ASMAPIP
 239 #else
 240 #define _NORMAPI
 241 #define _NORMAPIP *
 242 #endif
 243
 244
 245 /* Function inlining */
 246 #if defined(__GNUC__)
 247 #  define INLINE __inline__
 248 #elif defined(__MSC__)
 249 #  define INLINE __inline
 250 #elif defined(_MSC_VER)
 251 #  define INLINE __inline
 252 #elif defined(__ICL)
 253 #  define INLINE __inline
 254 #else
 255 #  define INLINE
 256 #endif
 257
 258
 259 /*
 260  * Provide a reasonable replacement for __FUNCTION__ when using
 261  * non-GNU C compilers.
 262  */
 263 #if !defined(__GNUC__)
 264 #define STRINGIZE(x) #x
 265 #define STRINGIZE_EVAL(x) STRINGIZE(x)
 266 #define __FUNCTION__ STRINGIZE_EVAL(__FILE__) ", line " STRINGIZE_EVAL(__LINE__)
 267 #endif
 268
 269
 270 /* Some compilers don't like some of Mesa's const usage */
 271 #ifdef NO_CONST
 272 #  define CONST
 273 #else
 274 #  define CONST const
 275 #endif
 276
 277
 278 #ifdef DEBUG
 279 #  define ASSERT(X)   assert(X)
 280 #else
 281 #  define ASSERT(X)
 282 #endif
 283
 284
 285 /*
 286  * Sometimes we treat GLfloats as GLints.  On x86 systems, moving a float
 287  * as a int (thereby using integer registers instead of fp registers) is
 288  * a performance win.  Typically, this can be done with ordinary casts.
 289  * But with gcc's -fstrict-aliasing flag (which defaults to on in gcc 3.0)
 290  * these casts generate warnings.
 291  * The following union typedef is used to solve that.
 292  */
 293 typedef union { GLfloat f; GLint i; } fi_type;
 294
 295
 296 #endif /* GLHEADER_H */