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/* $Id: glheader.h,v 1.2 2003-03-18 15:10:38 giacomo Exp $ */

/*

 * Mesa 3-D graphics library

 * Version:  5.0

 *

 * Copyright (C) 1999-2002  Brian Paul   All Rights Reserved.

 *

 * Permission is hereby granted, free of charge, to any person obtaining a

 * copy of this software and associated documentation files (the "Software"),

 * to deal in the Software without restriction, including without limitation

 * the rights to use, copy, modify, merge, publish, distribute, sublicense,

 * and/or sell copies of the Software, and to permit persons to whom the

 * Software is furnished to do so, subject to the following conditions:

 *

 * The above copyright notice and this permission notice shall be included

 * in all copies or substantial portions of the Software.

 *

 * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS

 * OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,

 * FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT.  IN NO EVENT SHALL

 * BRIAN PAUL BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN

 * AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN

 * CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.

 */

#ifndef GLHEADER_H

#define GLHEADER_H

/*

 * This is the top-most include file of the Mesa sources.

 * It includes gl.h and all system headers which are needed.

 * Other Mesa source files should _not_ directly include any system

 * headers.  This allows Mesa to be integrated into XFree86 and

 * allows system-dependent hacks/work-arounds to be collected in one place.

 *

 * If you touch this file, everything gets recompiled!

 *

 * This file should be included before any other header in the .c files.

 *

 * Put compiler/OS/assembly pragmas and macros here to avoid

 * cluttering other source files.

 */

#if defined(XFree86LOADER) && defined(IN_MODULE)

#include "xf86_ansic.h"

#else

#include <assert.h>

#include <ctype.h>

/* If we can use Compaq's Fast Math Library on Alpha */

#if defined(__alpha__) && defined(CCPML)

#include <cpml.h>

#else

#include <math.h>

#endif

#include <limits.h>

#include <stdlib.h>

#include <stdio.h>

#include <string.h>

#if defined(__linux__) && defined(__i386__)

#include <fpu_control.h>

#endif

#endif

#include <float.h>

#include <stdarg.h>

#ifdef HAVE_CONFIG_H

#include "conf.h"

#endif

#if defined(_WIN32) && !defined(__WIN32__) && !defined(__CYGWIN__)

#       define __WIN32__

#       define finite _finite

#endif

#if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__))

#  pragma warning( disable : 4068 ) /* unknown pragma */

#  pragma warning( disable : 4710 ) /* function 'foo' not inlined */

#  pragma warning( disable : 4711 ) /* function 'foo' selected for automatic inline expansion */

#  pragma warning( disable : 4127 ) /* conditional expression is constant */

#  if defined(MESA_MINWARN)

#    pragma warning( disable : 4244 ) /* '=' : conversion from 'const double ' to 'float ', possible loss of data */

#    pragma warning( disable : 4018 ) /* '<' : signed/unsigned mismatch */

#    pragma warning( disable : 4305 ) /* '=' : truncation from 'const double ' to 'float ' */

#    pragma warning( disable : 4550 ) /* 'function' undefined; assuming extern returning int */

#    pragma warning( disable : 4761 ) /* integral size mismatch in argument; conversion supplied */

#  endif

#  if defined(_MSC_VER) && defined(BUILD_GL32) /* tag specify we're building mesa as a DLL */

#    define GLAPI __declspec(dllexport)

#    define WGLAPI __declspec(dllexport)

#  elif defined(_MSC_VER) && defined(_DLL) /* tag specifying we're building for DLL runtime support */

#    define GLAPI __declspec(dllimport)

#    define WGLAPI __declspec(dllimport)

#  else /* for use with static link lib build of Win32 edition only */

#    define GLAPI extern

#    define WGLAPI __declspec(dllimport)

#  endif /* _STATIC_MESA support */

#  define GLAPIENTRY __stdcall

#  define GLAPIENTRYP __stdcall *

#  define GLCALLBACK __stdcall

#  define GLCALLBACKP __stdcall *

#  if defined(__CYGWIN__)

#    define GLCALLBACKPCAST *

#  else

#    define GLCALLBACKPCAST __stdcall *

#  endif

#  define GLWINAPI __stdcall

#  define GLWINAPIV __cdecl

#else

/* non-Windows compilation */

#  define GLAPI extern

#  define GLAPIENTRY

#  define GLAPIENTRYP *

#  define GLCALLBACK

#  define GLCALLBACKP *

#  define GLCALLBACKPCAST *

#  define GLWINAPI

#  define GLWINAPIV

#endif /* WIN32 / CYGWIN bracket */

/* compatability guard so we don't need to change client code */

#if defined(_WIN32) && !defined(_WINDEF_) && !defined(_GNU_H_WINDOWS32_BASE) && !defined(OPENSTEP) && !defined(__CYGWIN__)

#if 0

#       define CALLBACK GLCALLBACK

typedef void *HGLRC;

typedef void *HDC;

#endif

typedef int (GLAPIENTRY *PROC)();

typedef unsigned long COLORREF;

#endif

/* Make sure we include glext.h from gl.h */

#define GL_GLEXT_PROTOTYPES

#if defined(_WIN32) && !defined(_WINGDI_) && !defined(_GNU_H_WINDOWS32_DEFINES) && !defined(OPENSTEP)

#       define WGL_FONT_LINES      0

#       define WGL_FONT_POLYGONS   1

#ifndef _GNU_H_WINDOWS32_FUNCTIONS

#       ifdef UNICODE

#               define wglUseFontBitmaps  wglUseFontBitmapsW

#               define wglUseFontOutlines  wglUseFontOutlinesW

#       else

#               define wglUseFontBitmaps  wglUseFontBitmapsA

#               define wglUseFontOutlines  wglUseFontOutlinesA

#       endif /* !UNICODE */

#endif /* _GNU_H_WINDOWS32_FUNCTIONS */

typedef struct tagLAYERPLANEDESCRIPTOR LAYERPLANEDESCRIPTOR, *PLAYERPLANEDESCRIPTOR, *LPLAYERPLANEDESCRIPTOR;

typedef struct _GLYPHMETRICSFLOAT GLYPHMETRICSFLOAT, *PGLYPHMETRICSFLOAT, *LPGLYPHMETRICSFLOAT;

typedef struct tagPIXELFORMATDESCRIPTOR PIXELFORMATDESCRIPTOR, *PPIXELFORMATDESCRIPTOR, *LPPIXELFORMATDESCRIPTOR;

#if !defined(GLX_USE_MESA)

#include <gl/mesa_wgl.h>

#endif

#endif

/*

 * Either define MESA_BIG_ENDIAN or MESA_LITTLE_ENDIAN.

 * Do not use them unless absolutely necessary!

 * Try to use a runtime test instead.

 * For now, only used by some DRI hardware drivers for color/texel packing.

 */

#if defined(BYTE_ORDER) && defined(BIG_ENDIAN) && BYTE_ORDER == BIG_ENDIAN

#if defined(__linux__)

#include <byteswap.h>

#define CPU_TO_LE32( x )        bswap_32( x )

#else /*__linux__*/

#define CPU_TO_LE32( x )        ( x )  /* fix me for non-Linux big-endian! */

#endif /*__linux__*/

#define MESA_BIG_ENDIAN 1

#else

#define CPU_TO_LE32( x )        ( x )

#define MESA_LITTLE_ENDIAN 1

#endif

#define LE32_TO_CPU( x )        CPU_TO_LE32( x )

/* This is a macro on IRIX */

#ifdef _P

#undef _P

#endif

#include "GL/gl.h"

#include "GL/glext.h"

#ifndef CAPI

#ifdef WIN32

#define CAPI _cdecl

#else

#define CAPI

#endif

#endif

#include <GL/internal/glcore.h>

/* Disable unreachable code warnings for Watcom C++ */

#ifdef  __WATCOMC__

#pragma disable_message(201)

#endif

/* Turn off macro checking systems used by other libraries */

#ifdef CHECK

#undef CHECK

#endif

/* Create a macro so that asm functions can be linked into compilers other

 * than GNU C

 */

#ifndef _ASMAPI

#if !defined( __GNUC__ ) && !defined( VMS )

#define _ASMAPI __cdecl

#else

#define _ASMAPI

#endif

#ifdef  PTR_DECL_IN_FRONT

#define _ASMAPIP * _ASMAPI

#else

#define _ASMAPIP _ASMAPI *

#endif

#endif

#ifdef USE_X86_ASM

#define _NORMAPI _ASMAPI

#define _NORMAPIP _ASMAPIP

#else

#define _NORMAPI

#define _NORMAPIP *

#endif

/* Function inlining */

#if defined(__GNUC__)

#  define INLINE __inline__

#elif defined(__MSC__)

#  define INLINE __inline

#elif defined(_MSC_VER)

#  define INLINE __inline

#elif defined(__ICL)

#  define INLINE __inline

#else

#  define INLINE

#endif

/*

 * Provide a reasonable replacement for __FUNCTION__ when using

 * non-GNU C compilers.

 */

#if !defined(__GNUC__)

#define STRINGIZE(x) #x

#define STRINGIZE_EVAL(x) STRINGIZE(x)

#define __FUNCTION__ STRINGIZE_EVAL(__FILE__) ", line " STRINGIZE_EVAL(__LINE__)

#endif

/* Some compilers don't like some of Mesa's const usage */

#ifdef NO_CONST

#  define CONST

#else

#  define CONST const

#endif

#ifdef DEBUG

#  define ASSERT(X)   assert(X)

#else

#  define ASSERT(X)

#endif

/*

 * Sometimes we treat GLfloats as GLints.  On x86 systems, moving a float

 * as a int (thereby using integer registers instead of fp registers) is

 * a performance win.  Typically, this can be done with ordinary casts.

 * But with gcc's -fstrict-aliasing flag (which defaults to on in gcc 3.0)

 * these casts generate warnings.

 * The following union typedef is used to solve that.

 */

typedef union { GLfloat f; GLint i; } fi_type;

#endif /* GLHEADER_H */