-/* $Id: imports.h,v 1.14 2003/03/02 19:36:09 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 5.1
+ * Version: 6.2
*
- * Copyright (C) 1999-2003 Brian Paul All Rights Reserved.
+ * 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"),
*/
-/*
+/**
+ * \file imports.h
+ * Standard C library function wrappers.
+ *
* This file provides wrappers for all the standard C library functions
- * like malloc, free, printf, getenv, etc.
+ * like malloc(), free(), printf(), getenv(), etc.
*/
#include "glheader.h"
-/**********************************************************************
- * General macros
- */
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**********************************************************************/
+/** \name General macros */
+/*@{*/
#ifndef NULL
#define NULL 0
#endif
+/*@}*/
-/**********************************************************************
- * Memory macros
- */
+/**********************************************************************/
+/** Memory macros */
+/*@{*/
+/** Allocate \p BYTES bytes */
#define MALLOC(BYTES) _mesa_malloc(BYTES)
+/** Allocate and zero \p BYTES bytes */
#define CALLOC(BYTES) _mesa_calloc(BYTES)
+/** Allocate a structure of type \p T */
#define MALLOC_STRUCT(T) (struct T *) _mesa_malloc(sizeof(struct T))
+/** Allocate and zero a structure of type \p T */
#define CALLOC_STRUCT(T) (struct T *) _mesa_calloc(sizeof(struct T))
+/** Free memory */
#define FREE(PTR) _mesa_free(PTR)
+/** Allocate \p BYTES aligned at \p N bytes */
#define ALIGN_MALLOC(BYTES, N) _mesa_align_malloc(BYTES, N)
+/** Allocate and zero \p BYTES bytes aligned at \p N bytes */
#define ALIGN_CALLOC(BYTES, N) _mesa_align_calloc(BYTES, N)
+/** Allocate a structure of type \p T aligned at \p N bytes */
#define ALIGN_MALLOC_STRUCT(T, N) (struct T *) _mesa_align_malloc(sizeof(struct T), N)
+/** Allocate and zero a structure of type \p T aligned at \p N bytes */
#define ALIGN_CALLOC_STRUCT(T, N) (struct T *) _mesa_align_calloc(sizeof(struct T), N)
+/** Free aligned memory */
#define ALIGN_FREE(PTR) _mesa_align_free(PTR)
+/** Copy \p BYTES bytes from \p SRC into \p DST */
#define MEMCPY( DST, SRC, BYTES) _mesa_memcpy(DST, SRC, BYTES)
+/** Set \p N bytes in \p DST to \p VAL */
#define MEMSET( DST, VAL, N ) _mesa_memset(DST, VAL, N)
#define MEMSET16( DST, VAL, N ) _mesa_memset16( (DST), (VAL), (size_t) (N) )
+/*@}*/
+
+
+/*
+ * For GL_ARB_vertex_buffer_object we need to treat vertex array pointers
+ * as offsets into buffer stores. Since the vertex array pointer and
+ * buffer store pointer are both pointers and we need to add them, we use
+ * this macro.
+ * Both pointers/offsets are expressed in bytes.
+ */
+#define ADD_POINTERS(A, B) ( (GLubyte *) (A) + (unsigned long) (B) )
+
+
+/**********************************************************************/
+/** \name [Pseudo] static array declaration.
+ *
+ * MACs and BeOS don't support static larger than 32kb, so ...
+ */
+/*@{*/
+
+/**
+ * \def DEFARRAY
+ * Define a [static] unidimensional array
+ */
+
+/**
+ * \def DEFMARRAY
+ * Define a [static] bi-dimensional array
+ */
+
+/**
+ * \def DEFMNARRAY
+ * Define a [static] tri-dimensional array
+ */
+
+/**
+ * \def CHECKARRAY
+ * Verifies a [static] array was properly allocated.
+ */
+
+/**
+ * \def UNDEFARRAY
+ * Undefine (free) a [static] array.
+ */
-/* MACs and BeOS don't support static larger than 32kb, so... */
#if defined(macintosh) && !defined(__MRC__)
/*extern char *AGLAlloc(int size);*/
/*extern void AGLFree(char* ptr);*/
# define DEFARRAY(TYPE,NAME,SIZE) TYPE *NAME = (TYPE*)_mesa_alloc(sizeof(TYPE)*(SIZE))
# define DEFMARRAY(TYPE,NAME,SIZE1,SIZE2) TYPE (*NAME)[SIZE2] = (TYPE(*)[SIZE2])_mesa_alloc(sizeof(TYPE)*(SIZE1)*(SIZE2))
# define DEFMNARRAY(TYPE,NAME,SIZE1,SIZE2,SIZE3) TYPE (*NAME)[SIZE2][SIZE3] = (TYPE(*)[SIZE2][SIZE3])_mesa_alloc(sizeof(TYPE)*(SIZE1)*(SIZE2)*(SIZE3))
-
# define CHECKARRAY(NAME,CMD) do {if (!(NAME)) {CMD;}} while (0)
# define UNDEFARRAY(NAME) do {if ((NAME)) {_mesa_free((char*)NAME);} }while (0)
#elif defined(__BEOS__)
# define UNDEFARRAY(NAME)
#endif
+/*@}*/
-#ifdef MESA_EXTERNAL_BUFFERALLOC
-/*
- * If you want Mesa's depth/stencil/accum/etc buffers to be allocated
- * with a specialized allocator you can define MESA_EXTERNAL_BUFFERALLOC
- * and implement _ext_mesa_alloc/free_pixelbuffer() in your app.
+
+/**********************************************************************/
+/** \name External pixel buffer allocation.
+ *
+ * If you want Mesa's depth/stencil/accum/etc buffers to be allocated with a
+ * specialized allocator you can define MESA_EXTERNAL_BUFFERALLOC and implement
+ * _ext_mesa_alloc_pixelbuffer() _ext_mesa_free_pixelbuffer() in your
+ * application.
+ *
+ * \author
* Contributed by Gerk Huisma (gerk@five-d.demon.nl).
*/
+/*@{*/
+
+/**
+ * \def MESA_PBUFFER_ALLOC
+ * Allocate a pixel buffer.
+ */
+
+/**
+ * \def MESA_PBUFFER_FREE
+ * Free a pixel buffer.
+ */
+
+#ifdef MESA_EXTERNAL_BUFFERALLOC
extern void *_ext_mesa_alloc_pixelbuffer( unsigned int size );
extern void _ext_mesa_free_pixelbuffer( void *pb );
#define MESA_PBUFFER_FREE(PTR) _mesa_align_free(PTR)
#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;
+
/**********************************************************************
#define MAX_GLUINT 0xffffffff
#ifndef M_PI
-#define M_PI (3.1415926)
+#define M_PI (3.1415926536)
+#endif
+
+/* XXX this is a bit of a hack needed for compilation within XFree86 */
+#ifndef FLT_MIN
+#define FLT_MIN (1.0e-37)
#endif
/* Degrees to radians conversion: */
/***
*** USE_IEEE: Determine if we're using IEEE floating point
***/
-#if defined(__i386__) || defined(__sparc__) || defined(__s390x__) || \
- defined(__powerpc__) || \
- ( defined(__alpha__) && ( defined(__IEEE_FLOAT) || !defined(VMS) ) )
+#if defined(__i386__) || defined(__386__) || defined(__sparc__) || \
+ defined(__s390x__) || defined(__powerpc__) || \
+ defined(__amd64__) || \
+ defined(ia64) || defined(__ia64__) || \
+ defined(__hppa__) || defined(hpux) || \
+ defined(__mips) || defined(_MIPS_ARCH) || \
+ defined(__arm__) || \
+ (defined(__alpha__) && (defined(__IEEE_FLOAT) || !defined(VMS)))
#define USE_IEEE
#define IEEE_ONE 0x3f800000
#endif
/***
*** SQRTF: single-precision square root
***/
-#ifdef DEBUG
-# define SQRTF(X) ((float)_mesa_sqrtd((float) X))
-#elif defined(__WATCOMC__) && defined(USE_X86_ASM)
-float asm_sqrt (float x);
-#pragma aux asm_sqrt = \
- "fsqrt" \
- parm [8087] \
- value [8087] \
- modify exact [];
-# define SQRTF(X) asm_sqrt(X)
-#else
+#if 0 /* _mesa_sqrtf() not accurate enough - temporarily disabled */
# define SQRTF(X) _mesa_sqrtf(X)
+#elif defined(XFree86LOADER) && defined(IN_MODULE)
+# define SQRTF(X) (float) xf86sqrt((float) (X))
+#else
+# define SQRTF(X) (float) sqrt((float) (X))
+#endif
+
+
+/***
+ *** INV_SQRTF: single-precision inverse square root
+ ***/
+#if 0
+#define INV_SQRTF(X) _mesa_inv_sqrt(X)
+#else
+#define INV_SQRTF(X) (1.0F / SQRTF(X)) /* this is faster on a P4 */
#endif
*/
static INLINE GLfloat LOG2(GLfloat val)
{
- GLint *exp_ptr = (GLint *) &val;
- GLint x = *exp_ptr;
- const GLint log_2 = ((x >> 23) & 255) - 128;
- x &= ~(255 << 23);
- x += 127 << 23;
- *exp_ptr = x;
- val = ((-1.0f/3) * val + 2) * val - 2.0f/3;
- return val + log_2;
+ fi_type num;
+ GLint log_2;
+ num.f = val;
+ log_2 = ((num.i >> 23) & 255) - 128;
+ num.i &= ~(255 << 23);
+ num.i += 127 << 23;
+ num.f = ((-1.0f/3) * num.f + 2) * num.f - 2.0f/3;
+ return num.f + log_2;
}
#elif defined(XFree86LOADER) && defined(IN_MODULE)
#define LOG2(x) ((GLfloat) (xf86log(x) * 1.442695))
#define IS_INF_OR_NAN(x) (!isfinite(x))
#elif defined(finite)
#define IS_INF_OR_NAN(x) (!finite(x))
-#elif __VMS
+#elif defined(__VMS)
#define IS_INF_OR_NAN(x) (!finite(x))
#elif defined(__STDC_VERSION__) && __STDC_VERSION__ >= 199901L
#define IS_INF_OR_NAN(x) (!isfinite(x))
#else
#define IS_INF_OR_NAN(x) (!finite(x))
-#endif
+#endif
/***
*** IS_NEGATIVE: test if float is negative
***/
#if defined(USE_IEEE)
-#define GET_FLOAT_BITS(x) ((fi_type *) &(x))->i
-#define IS_NEGATIVE(x) (GET_FLOAT_BITS(x) & (1<<31))
+static INLINE int GET_FLOAT_BITS( float x )
+{
+ fi_type fi;
+ fi.f = x;
+ return fi.i;
+}
+#define IS_NEGATIVE(x) (GET_FLOAT_BITS(x) < 0)
#else
#define IS_NEGATIVE(x) (x < 0.0F)
#endif
*** FLOORF: floor of float
*** FABSF: absolute value of float
***/
-#if defined(__sparc__) || defined(__NeXT__) /* XXX improve? */
-#define CEILF(x) ceil(x)
-#define FLOORF(x) floor(x)
-#define FABSF(x) fabs(x)
-#elif defined(__WIN32__) || defined(__IBMC__) || defined(__IBMCPP__)
-#define CEILF(x) ((GLfloat) ceil(x))
-#define FLOORF(x) ((GLfloat) floor(x))
-#define FABSF(x) ((GLfloat) fabs(x))
-#elif defined(XFree86LOADER) && defined(IN_MODULE)
+#if defined(XFree86LOADER) && defined(IN_MODULE)
#define CEILF(x) ((GLfloat) xf86ceil(x))
#define FLOORF(x) ((GLfloat) xf86floor(x))
#define FABSF(x) ((GLfloat) xf86fabs(x))
-#else
+#elif defined(__gnu_linux__)
+/* C99 functions */
#define CEILF(x) ceilf(x)
#define FLOORF(x) floorf(x)
#define FABSF(x) fabsf(x)
+#else
+#define CEILF(x) ((GLfloat) ceil(x))
+#define FLOORF(x) ((GLfloat) floor(x))
+#define FABSF(x) ((GLfloat) fabs(x))
#endif
#if defined(USE_SPARC_ASM) && defined(__GNUC__) && defined(__sparc__)
static INLINE int iround(float f)
{
- int r;
- __asm__ ("fstoi %1, %0" : "=f" (r) : "f" (f));
- return r;
+ int r;
+ __asm__ ("fstoi %1, %0" : "=f" (r) : "f" (f));
+ return r;
}
#define IROUND(x) iround(x)
-#elif defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__)
+#elif defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__) && \
+ (!defined(__BEOS__) || (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)))
static INLINE int iround(float f)
{
int r;
return r;
}
#define IROUND(x) iround(x)
-#elif defined(USE_X86_ASM) && defined(__WATCOMC__)
+#elif defined(__WATCOMC__) && defined(__386__)
long iround(float f);
-#pragma aux iround = \
+#pragma aux iround = \
"push eax" \
"fistp dword ptr [esp]" \
"pop eax" \
parm [8087] \
value [eax] \
modify exact [eax];
-
#define IROUND(x) iround(x)
#else
#define IROUND(f) ((int) (((f) >= 0.0F) ? ((f) + 0.5F) : ((f) - 0.5F)))
af = (3 << 22) + 0.5 + (double)f;
bf = (3 << 22) + 0.5 - (double)f;
- u.f = af; ai = u.i;
- u.f = bf; bi = u.i;
+ u.f = (float) af; ai = u.i;
+ u.f = (float) bf; bi = u.i;
return (ai - bi) >> 1;
}
#define IFLOOR(x) ifloor(x)
fi_type u;
af = (3 << 22) + 0.5 + (double)f;
bf = (3 << 22) + 0.5 - (double)f;
- u.f = af; ai = u.i;
- u.f = bf; bi = u.i;
+ u.f = (float) af; ai = u.i;
+ u.f = (float) bf; bi = u.i;
return (ai - bi + 1) >> 1;
}
#define ICEIL(x) iceil(x)
/***
- *** UNCLAMPED_FLOAT_TO_UBYTE: map float from {0,1} to ubyte in [0,255]
- *** CLAMPED_FLOAT_TO_UBYTE: map float in [0,1] to ubyte in [0,255]
+ *** UNCLAMPED_FLOAT_TO_UBYTE: clamp float to [0,1] and map to ubyte in [0,255]
+ *** CLAMPED_FLOAT_TO_UBYTE: map float known to be in [0,1] to ubyte in [0,255]
***/
#if defined(USE_IEEE) && !defined(DEBUG)
#define IEEE_0996 0x3f7f0000 /* 0.996 or so */
do { \
fi_type __tmp; \
__tmp.f = (F); \
- UB = ((__tmp.i >= IEEE_0996) \
- ? ((GLint)__tmp.i < 0) ? (GLubyte)0 : (GLubyte)255 \
- : (__tmp.f = __tmp.f*(255.0F/256.0F) + 32768.0F, \
- (GLubyte)__tmp.i)); \
+ if (__tmp.i < 0) \
+ UB = (GLubyte) 0; \
+ else if (__tmp.i >= IEEE_0996) \
+ UB = (GLubyte) 255; \
+ else { \
+ __tmp.f = __tmp.f * (255.0F/256.0F) + 32768.0F; \
+ UB = (GLubyte) __tmp.i; \
+ } \
+ } while (0)
+#define CLAMPED_FLOAT_TO_UBYTE(UB, F) \
+ do { \
+ fi_type __tmp; \
+ __tmp.f = (F) * (255.0F/256.0F) + 32768.0F; \
+ UB = (GLubyte) __tmp.i; \
} while (0)
-#define CLAMPED_FLOAT_TO_UBYTE(ub, f) \
- UNCLAMPED_FLOAT_TO_UBYTE(ub, f)
#else
#define UNCLAMPED_FLOAT_TO_UBYTE(ub, f) \
ub = ((GLubyte) IROUND(CLAMP((f), 0.0F, 1.0F) * 255.0F))
/***
- *** COPY_FLOAT: copy a float from src to dest, avoid slow FP regs if possible
+ *** COPY_FLOAT: copy a float from src to dest.
***/
-#if defined(USE_IEEE) && !defined(DEBUG)
-#define COPY_FLOAT( dst, src ) \
- ((fi_type *) &(dst))->i = ((fi_type *) &(src))->i
-#else
#define COPY_FLOAT( dst, src ) (dst) = (src)
-#endif
/***
__asm__ ( "fnclex ; fldcw %0" : : "m" (*&(x)) ); \
} while (0)
-#elif defined(__WATCOMC__) && !defined(NO_FAST_MATH)
-void _wacom_start_fast_math(unsigned short *x);
-#pragma aux _wacom_start_fast_math = \
- "fstcw word ptr [esi]" \
- "or word ptr [esi], 0x3f" \
- "fldcw word ptr [esi]" \
- parm [esi] \
- modify exact [];
-void _wacom_end_fast_math(unsigned short *x);
-#pragma aux _wacom_end_fast_math = \
- "fldcw word ptr [esi]" \
- parm [esi] \
- modify exact [];
-#define START_FAST_MATH(x) _wacom_start_fast_math(& x)
-#define END_FAST_MATH(x) _wacom_end_fast_math(& x)
+#elif defined(__WATCOMC__) && defined(__386__)
+#define DEFAULT_X86_FPU 0x037f /* See GCC comments above */
+#define FAST_X86_FPU 0x003f /* See GCC comments above */
+void _watcom_start_fast_math(unsigned short *x,unsigned short *mask);
+#pragma aux _watcom_start_fast_math = \
+ "fnstcw word ptr [eax]" \
+ "fldcw word ptr [ecx]" \
+ parm [eax] [ecx] \
+ modify exact [];
+void _watcom_end_fast_math(unsigned short *x);
+#pragma aux _watcom_end_fast_math = \
+ "fnclex" \
+ "fldcw word ptr [eax]" \
+ parm [eax] \
+ modify exact [];
+#if defined(NO_FAST_MATH)
+#define START_FAST_MATH(x) \
+do { \
+ static GLushort mask = DEFAULT_X86_FPU; \
+ _watcom_start_fast_math(&x,&mask); \
+} while (0)
+#else
+#define START_FAST_MATH(x) \
+do { \
+ static GLushort mask = FAST_X86_FPU; \
+ _watcom_start_fast_math(&x,&mask); \
+} while (0)
+#endif
+#define END_FAST_MATH(x) _watcom_end_fast_math(&x)
#else
#define START_FAST_MATH(x) x = 0
#define END_FAST_MATH(x) (void)(x)
extern void
_mesa_align_free( void *ptr );
+extern void *
+_mesa_realloc( void *oldBuffer, size_t oldSize, size_t newSize );
+
extern void *
_mesa_memcpy( void *dest, const void *src, size_t n );
extern float
_mesa_sqrtf(float x);
+extern float
+_mesa_inv_sqrtf(float x);
+
extern double
_mesa_pow(double x, double y);
extern unsigned int
_mesa_bitcount(unsigned int n);
+extern GLhalfARB
+_mesa_float_to_half(float f);
+
+extern float
+_mesa_half_to_float(GLhalfARB h);
+
extern char *
_mesa_getenv( const char *var );
_mesa_init_default_imports( __GLimports *imports, void *driverCtx );
-#endif /* IMPORTS_H */
+#ifdef __cplusplus
+}
+#endif
+
+#endif /* IMPORTS_H */
projects / mesa.git / blobdiff