glheader.h revision 47b0bc1a36f4a6c3af1c9c76ee96e97c29376d71
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 137typedef void *HGLRC; 138typedef void *HDC; 139#endif 140typedef int (GLAPIENTRY *PROC)(); 141typedef 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 */ 161typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR; 162typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT; 163typedef 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/* Some compilers don't like some of Mesa's const usage */ 267#ifdef NO_CONST 268# define CONST 269#else 270# define CONST const 271#endif 272 273 274#if defined(BUILD_FOR_SNAP) && defined(CHECKED) 275# define ASSERT(X) _CHECK(X) 276#elif defined(DEBUG) 277# define ASSERT(X) assert(X) 278#else 279# define ASSERT(X) 280#endif 281 282 283/** 284 * Sometimes we treat GLfloats as GLints. On x86 systems, moving a float 285 * as a int (thereby using integer registers instead of FP registers) is 286 * a performance win. Typically, this can be done with ordinary casts. 287 * But with gcc's -fstrict-aliasing flag (which defaults to on in gcc 3.0) 288 * these casts generate warnings. 289 * The following union typedef is used to solve that. 290 */ 291typedef union { GLfloat f; GLint i; } fi_type; 292 293 294#include "config.h" 295 296#endif /* GLHEADER_H */ 297