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authorRadosław Kujawa <radoslaw.kujawa@c0ff33.net>2026-07-17 14:54:32 +0200
committerRadosław Kujawa <radoslaw.kujawa@c0ff33.net>2026-07-17 14:54:32 +0200
commit2702c90d7a39fca2a3319c5e915fd290cb31fc70 (patch)
tree283c4d851efef7e3a7cd03ba80c87e2bffcdbb2c /src/mesa/main/glheader.h
parent836167945ec2c7ad5acdf0aa17ce35ec1b9428a6 (diff)
Initial import.
Diffstat (limited to 'src/mesa/main/glheader.h')
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diff --git a/src/mesa/main/glheader.h b/src/mesa/main/glheader.h
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+/**
+ * \file glheader.h
+ * Top-most include file.
+ *
+ * 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 \e not directly include any system
+ * headers. This allows Mesa to be integrated into XFree86 and
+ * allows system-dependent hacks/workarounds to be collected in one place.
+ *
+ * \note Actually, a lot of system-dependent stuff is now in imports.[ch].
+ *
+ * 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.
+ */
+
+/*
+ * Mesa 3-D graphics library
+ * Version: 6.2
+ *
+ * Copyright (C) 1999-2004 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
+
+
+#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__) && !defined(BUILD_FOR_SNAP)
+# define __WIN32__
+# define finite _finite
+#endif
+
+#if defined(__WATCOMC__)
+# define finite _finite
+#endif
+
+#if !defined(OPENSTEP) && (defined(__WIN32__) && !defined(__CYGWIN__)) && !defined(BUILD_FOR_SNAP)
+# ifdef _MSC_VER
+# 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
+# endif
+# if (defined(_MSC_VER) || defined(__MINGW32__)) && 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(__MINGW32__)) && 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 GLAPIENTRY *
+# define GLCALLBACK __stdcall
+# define GLCALLBACKP GLCALLBACK *
+# if defined(__CYGWIN__)
+# define GLCALLBACKPCAST *
+# else
+# define GLCALLBACKPCAST __stdcall *
+# endif
+# define GLWINAPI __stdcall
+# define GLWINAPIV __cdecl
+#elif !defined(BUILD_FOR_SNAP)
+/* non-Windows compilation */
+# define GLAPI extern
+# define GLAPIENTRY
+# ifndef GLAPIENTRYP
+# define GLAPIENTRYP *
+# endif
+# define GLCALLBACK
+# define GLCALLBACKP *
+# define GLCALLBACKPCAST *
+# define GLWINAPI
+# define GLWINAPIV
+#endif /* WIN32 / CYGWIN bracket */
+
+/* compatibility guard so we don't need to change client code */
+
+#if defined(_WIN32) && !defined(_WINDEF_) && !defined(_WINDEF_H) && !defined(_GNU_H_WINDOWS32_BASE) && !defined(OPENSTEP) && !defined(__CYGWIN__) && !defined(BUILD_FOR_SNAP)
+#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(_WINGDI_H) && !defined(_GNU_H_WINDOWS32_DEFINES) && !defined(OPENSTEP) && !defined(BUILD_FOR_SNAP)
+# 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
+#if defined(WIN32) && !defined(BUILD_FOR_SNAP)
+#define CAPI _cdecl
+#else
+#define CAPI
+#endif
+#endif
+#include <GL/internal/glcore.h>
+
+
+/* XXX temporary hack - remove when glext.h is updated */
+#ifndef GL_ARB_half_float_pixel
+#define GL_ARB_half_float_pixel 1
+#define GL_HALF_FLOAT_ARB 0x140B
+typedef GLushort GLhalfARB;
+#endif
+
+/* XXX temporary hack - remove when glext.h is updated */
+#ifndef GL_ARB_texture_float
+#define GL_ARB_texture_float 1
+#define GL_TEXTURE_RED_TYPE_ARB 0x9000
+#define GL_TEXTURE_GREEN_TYPE_ARB 0x9001
+#define GL_TEXTURE_BLUE_TYPE_ARB 0x9002
+#define GL_TEXTURE_ALPHA_TYPE_ARB 0x9003
+#define GL_TEXTURE_LUMINANCE_TYPE_ARB 0x9004
+#define GL_TEXTURE_INTENSITY_TYPE_ARB 0x9005
+#define GL_TEXTURE_DEPTH_TYPE_ARB 0x9006
+#define GL_UNSIGNED_NORMALIZED_ARB 0x9007
+#define GL_RGBA32F_ARB 0x8814
+#define GL_RGB32F_ARB 0x8815
+#define GL_ALPHA32F_ARB 0x8816
+#define GL_INTENSITY32F_ARB 0x8817
+#define GL_LUMINANCE32F_ARB 0x8818
+#define GL_LUMINANCE_ALPHA32F_ARB 0x8819
+#define GL_RGBA16F_ARB 0x881A
+#define GL_RGB16F_ARB 0x881B
+#define GL_ALPHA16F_ARB 0x881C
+#define GL_INTENSITY16F_ARB 0x881D
+#define GL_LUMINANCE16F_ARB 0x881E
+#define GL_LUMINANCE_ALPHA16F_ARB 0x881F
+#endif
+
+/* XXX temporary hack - remove when glext.h is updated */
+#ifndef GL_POINT_SPRITE_COORD_ORIGIN
+#define GL_POINT_SPRITE_COORD_ORIGIN 0x10000
+#define GL_LOWER_LEFT 0x10001
+#define GL_UPPER_LEFT 0x10002
+#endif
+
+
+
+/* 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(WIN32) && !defined(BUILD_FOR_SNAP)/* was: !defined( __GNUC__ ) && !defined( VMS ) && !defined( __INTEL_COMPILER )*/
+#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
+#elif defined(__INTEL_COMPILER)
+# define INLINE inline
+#elif defined(__WATCOMC__) && (__WATCOMC__ >= 1100)
+# define INLINE __inline
+#else
+# define INLINE
+#endif
+
+
+/* Some compilers don't like some of Mesa's const usage */
+#ifdef NO_CONST
+# define CONST
+#else
+# define CONST const
+#endif
+
+
+#if defined(BUILD_FOR_SNAP) && defined(CHECKED)
+# define ASSERT(X) _CHECK(X)
+#elif defined(DEBUG)
+# define ASSERT(X) assert(X)
+#else
+# define ASSERT(X)
+#endif
+
+
+#if !defined __GNUC__ || __GNUC__ < 3
+# define __builtin_expect(x, y) 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;
+
+
+#include "config.h"
+
+#endif /* GLHEADER_H */