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:  6.1
  24  *
  25  * Copyright (C) 1999-2004  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 GLAPIENTRY *
 111 #  define GLCALLBACK __stdcall
 112 #  define GLCALLBACKP GLCALLBACK *
 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 #  ifndef GLAPIENTRYP
 125 #    define GLAPIENTRYP *
 126 #  endif
 127 #  define GLCALLBACK
 128 #  define GLCALLBACKP *
 129 #  define GLCALLBACKPCAST *
 130 #  define GLWINAPI
 131 #  define GLWINAPIV
 132 #endif /* WIN32 / CYGWIN bracket */
 133
 134 /* compatibility guard so we don't need to change client code */
 135
 136 #if defined(_WIN32) && !defined(_WINDEF_) && !defined(_WINDEF_H) && !defined(_GNU_H_WINDOWS32_BASE) && !defined(OPENSTEP) && !defined(__CYGWIN__) && !defined(BUILD_FOR_SNAP)
 137 #if 0
 138 #       define CALLBACK GLCALLBACK
 139 typedef void *HGLRC;
 140 typedef void *HDC;
 141 #endif
 142 typedef int (GLAPIENTRY *PROC)();
 143 typedef unsigned long COLORREF;
 144 #endif
 145
 146
 147 /* Make sure we include glext.h from gl.h */
 148 #define GL_GLEXT_PROTOTYPES
 149
 150
 151 #if defined(_WIN32) && !defined(_WINGDI_) && !defined(_WINGDI_H) && !defined(_GNU_H_WINDOWS32_DEFINES) && !defined(OPENSTEP) && !defined(BUILD_FOR_SNAP)
 152 #       define WGL_FONT_LINES      0
 153 #       define WGL_FONT_POLYGONS   1
 154 #ifndef _GNU_H_WINDOWS32_FUNCTIONS
 155 #       ifdef UNICODE
 156 #               define wglUseFontBitmaps  wglUseFontBitmapsW
 157 #               define wglUseFontOutlines  wglUseFontOutlinesW
 158 #       else
 159 #               define wglUseFontBitmaps  wglUseFontBitmapsA
 160 #               define wglUseFontOutlines  wglUseFontOutlinesA
 161 #       endif /* !UNICODE */
 162 #endif /* _GNU_H_WINDOWS32_FUNCTIONS */
 163 typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;
 164 typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;
 165 typedef struct tagPIXELFORMATDESCRIPTOR PIXELFORMATDESCRIPTOR, *PPIXELFORMATDESCRIPTOR, *LPPIXELFORMATDESCRIPTOR;
 166 #if !defined(GLX_USE_MESA)
 167 #include <GL/mesa_wgl.h>
 168 #endif
 169 #endif
 170
 171
 172 /*
 173  * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN.
 174  * Do not use them unless absolutely necessary!
 175  * Try to use a runtime test instead.
 176  * For now, only used by some DRI hardware drivers for color/texel packing.
 177  */
 178 #if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN
 179 #if defined(__linux__)
 180 #include <byteswap.h>
 181 #define CPU_TO_LE32( x )        bswap_32( x )
 182 #else /*__linux__*/
 183 #define CPU_TO_LE32( x )        ( x )  /* fix me for non-Linux big-endian! */
 184 #endif /*__linux__*/
 185 #define MESA_BIG_ENDIAN 1
 186 #else
 187 #define CPU_TO_LE32( x )        ( x )
 188 #define MESA_LITTLE_ENDIAN 1
 189 #endif
 190 #define LE32_TO_CPU( x )        CPU_TO_LE32( x )
 191
 192
 193 /* This is a macro on IRIX */
 194 #ifdef _P
 195 #undef _P
 196 #endif
 197
 198
 199
 200 #include "GL/gl.h"
 201 #include "GL/glext.h"
 202
 203
 204 #ifndef CAPI
 205 #if defined(WIN32) && !defined(BUILD_FOR_SNAP)
 206 #define CAPI _cdecl
 207 #else
 208 #define CAPI
 209 #endif
 210 #endif
 211 #include <GL/internal/glcore.h>
 212
 213
 214 /* XXX temporary hack */
 215 #ifndef GL_PIXEL_PACK_BUFFER_EXT
 216 #define GL_PIXEL_PACK_BUFFER_EXT                        0x88EB
 217 #define GL_PIXEL_UNPACK_BUFFER_EXT                      0x88EC
 218 #define GL_PIXEL_PACK_BUFFER_BINDING_EXT                0x88ED
 219 #define GL_PIXEL_UNPACK_BUFFER_BINDING_EXT              0x88EF
 220 #endif
 221
 222
 223 /* XXX temporary hack */
 224 #ifndef GL_ARB_half_float_pixel
 225 #define GL_ARB_half_float_pixel 1
 226 #define GL_HALF_FLOAT_ARB 0x140B
 227 typedef GLushort GLhalfARB;
 228 #endif
 229
 230
 231 /* XXX temporary hack */
 232 #ifndef GL_ARB_texture_float
 233 #define GL_ARB_texture_float 1
 234 #define GL_TEXTURE_RED_TYPE_ARB             0x9000
 235 #define GL_TEXTURE_GREEN_TYPE_ARB           0x9001
 236 #define GL_TEXTURE_BLUE_TYPE_ARB            0x9002
 237 #define GL_TEXTURE_ALPHA_TYPE_ARB           0x9003
 238 #define GL_TEXTURE_LUMINANCE_TYPE_ARB       0x9004
 239 #define GL_TEXTURE_INTENSITY_TYPE_ARB       0x9005
 240 #define GL_TEXTURE_DEPTH_TYPE_ARB           0x9006
 241 #define GL_UNSIGNED_NORMALIZED_ARB          0x9007
 242 #define GL_RGBA32F_ARB                      0x8814
 243 #define GL_RGB32F_ARB                       0x8815
 244 #define GL_ALPHA32F_ARB                     0x8816
 245 #define GL_INTENSITY32F_ARB                 0x8817
 246 #define GL_LUMINANCE32F_ARB                 0x8818
 247 #define GL_LUMINANCE_ALPHA32F_ARB           0x8819
 248 #define GL_RGBA16F_ARB                      0x881A
 249 #define GL_RGB16F_ARB                       0x881B
 250 #define GL_ALPHA16F_ARB                     0x881C
 251 #define GL_INTENSITY16F_ARB                 0x881D
 252 #define GL_LUMINANCE16F_ARB                 0x881E
 253 #define GL_LUMINANCE_ALPHA16F_ARB           0x881F
 254 #endif
 255
 256
 257
 258
 259 /* Disable unreachable code warnings for Watcom C++ */
 260 #ifdef  __WATCOMC__
 261 #pragma disable_message(201)
 262 #endif
 263
 264
 265 /* Turn off macro checking systems used by other libraries */
 266 #ifdef CHECK
 267 #undef CHECK
 268 #endif
 269
 270
 271 /* Create a macro so that asm functions can be linked into compilers other
 272  * than GNU C
 273  */
 274 #ifndef _ASMAPI
 275 #if defined(WIN32) && !defined(BUILD_FOR_SNAP)/* was: !defined( __GNUC__ ) && !defined( VMS ) && !defined( __INTEL_COMPILER )*/
 276 #define _ASMAPI __cdecl
 277 #else
 278 #define _ASMAPI
 279 #endif
 280 #ifdef  PTR_DECL_IN_FRONT
 281 #define _ASMAPIP * _ASMAPI
 282 #else
 283 #define _ASMAPIP _ASMAPI *
 284 #endif
 285 #endif
 286
 287 #ifdef USE_X86_ASM
 288 #define _NORMAPI _ASMAPI
 289 #define _NORMAPIP _ASMAPIP
 290 #else
 291 #define _NORMAPI
 292 #define _NORMAPIP *
 293 #endif
 294
 295
 296 /* Function inlining */
 297 #if defined(__GNUC__)
 298 #  define INLINE __inline__
 299 #elif defined(__MSC__)
 300 #  define INLINE __inline
 301 #elif defined(_MSC_VER)
 302 #  define INLINE __inline
 303 #elif defined(__ICL)
 304 #  define INLINE __inline
 305 #elif defined(__INTEL_COMPILER)
 306 #  define INLINE inline
 307 #elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
 308 #  define INLINE __inline
 309 #else
 310 #  define INLINE
 311 #endif
 312
 313
 314 /* Some compilers don't like some of Mesa's const usage */
 315 #ifdef NO_CONST
 316 #  define CONST
 317 #else
 318 #  define CONST const
 319 #endif
 320
 321
 322 #if defined(BUILD_FOR_SNAP) && defined(CHECKED)
 323 #  define ASSERT(X)   _CHECK(X)
 324 #elif defined(DEBUG)
 325 #  define ASSERT(X)   assert(X)
 326 #else
 327 #  define ASSERT(X)
 328 #endif
 329
 330
 331 #if !defined __GNUC__ || __GNUC__ < 3
 332 # define __builtin_expect(x, y) x
 333 #endif
 334
 335
 336
 337 /**
 338  * Sometimes we treat GLfloats as GLints.  On x86 systems, moving a float
 339  * as a int (thereby using integer registers instead of FP registers) is
 340  * a performance win.  Typically, this can be done with ordinary casts.
 341  * But with gcc's -fstrict-aliasing flag (which defaults to on in gcc 3.0)
 342  * these casts generate warnings.
 343  * The following union typedef is used to solve that.
 344  */
 345 typedef union { GLfloat f; GLint i; } fi_type;
 346
 347
 348 #include "config.h"
 349
 350 #endif /* GLHEADER_H */