-/* $Id: imports.h,v 1.1 2000/09/26 20:53:53 brianp Exp $ */
-
/*
* Mesa 3-D graphics library
- * Version: 3.5
+ * Version: 7.5
*
- * Copyright (C) 1999-2000 Brian Paul All Rights Reserved.
+ * Copyright (C) 1999-2008 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.
+ */
+
+
#ifndef IMPORTS_H
#define IMPORTS_H
+#include "compiler.h"
#include "glheader.h"
+#ifdef __cplusplus
+extern "C" {
+#endif
+
+
+/**********************************************************************/
+/** 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)
+
+/*@}*/
+
+
+/*
+ * 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) + (uintptr_t) (B) )
+
+
+/**
+ * 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;
+
+
+
+/**********************************************************************
+ * Math macros
+ */
+
+#define MAX_GLUSHORT 0xffff
+#define MAX_GLUINT 0xffffffff
+
+/* Degrees to radians conversion: */
+#define DEG2RAD (M_PI/180.0)
+
+
+/***
+ *** SQRTF: single-precision square root
+ ***/
+#if 0 /* _mesa_sqrtf() not accurate enough - temporarily disabled */
+# define SQRTF(X) _mesa_sqrtf(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
+
+
+/***
+ *** LOG2: Log base 2 of float
+ ***/
+#ifdef USE_IEEE
+#if 0
+/* This is pretty fast, but not accurate enough (only 2 fractional bits).
+ * Based on code from http://www.stereopsis.com/log2.html
+ */
+static INLINE GLfloat LOG2(GLfloat x)
+{
+ const GLfloat y = x * x * x * x;
+ const GLuint ix = *((GLuint *) &y);
+ const GLuint exp = (ix >> 23) & 0xFF;
+ const GLint log2 = ((GLint) exp) - 127;
+ return (GLfloat) log2 * (1.0 / 4.0); /* 4, because of x^4 above */
+}
+#endif
+/* Pretty fast, and accurate.
+ * Based on code from http://www.flipcode.com/totd/
+ */
+static INLINE GLfloat LOG2(GLfloat val)
+{
+ 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;
+}
+#else
+/*
+ * NOTE: log_base_2(x) = log(x) / log(2)
+ * NOTE: 1.442695 = 1/log(2).
+ */
+#define LOG2(x) ((GLfloat) (log(x) * 1.442695F))
+#endif
+
+
+/***
+ *** IS_INF_OR_NAN: test if float is infinite or NaN
+ ***/
+#ifdef USE_IEEE
+static INLINE int IS_INF_OR_NAN( float x )
+{
+ fi_type tmp;
+ tmp.f = x;
+ return !(int)((unsigned int)((tmp.i & 0x7fffffff)-0x7f800000) >> 31);
+}
+#elif defined(isfinite)
+#define IS_INF_OR_NAN(x) (!isfinite(x))
+#elif defined(finite)
+#define IS_INF_OR_NAN(x) (!finite(x))
+#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
+
+
+/***
+ *** IS_NEGATIVE: test if float is negative
+ ***/
+#if defined(USE_IEEE)
+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
+
+
+/***
+ *** DIFFERENT_SIGNS: test if two floats have opposite signs
+ ***/
+#if defined(USE_IEEE)
+#define DIFFERENT_SIGNS(x,y) ((GET_FLOAT_BITS(x) ^ GET_FLOAT_BITS(y)) & (1<<31))
+#else
+/* Could just use (x*y<0) except for the flatshading requirements.
+ * Maybe there's a better way?
+ */
+#define DIFFERENT_SIGNS(x,y) ((x) * (y) <= 0.0F && (x) - (y) != 0.0F)
+#endif
+
+
+/***
+ *** CEILF: ceiling of float
+ *** FLOORF: floor of float
+ *** FABSF: absolute value of float
+ *** LOGF: the natural logarithm (base e) of the value
+ *** EXPF: raise e to the value
+ *** LDEXPF: multiply value by an integral power of two
+ *** FREXPF: extract mantissa and exponent from value
+ ***/
+#if defined(__gnu_linux__)
+/* C99 functions */
+#define CEILF(x) ceilf(x)
+#define FLOORF(x) floorf(x)
+#define FABSF(x) fabsf(x)
+#define LOGF(x) logf(x)
+#define EXPF(x) expf(x)
+#define LDEXPF(x,y) ldexpf(x,y)
+#define FREXPF(x,y) frexpf(x,y)
+#else
+#define CEILF(x) ((GLfloat) ceil(x))
+#define FLOORF(x) ((GLfloat) floor(x))
+#define FABSF(x) ((GLfloat) fabs(x))
+#define LOGF(x) ((GLfloat) log(x))
+#define EXPF(x) ((GLfloat) exp(x))
+#define LDEXPF(x,y) ((GLfloat) ldexp(x,y))
+#define FREXPF(x,y) ((GLfloat) frexp(x,y))
+#endif
+
+
+/***
+ *** IROUND: return (as an integer) float rounded to nearest integer
+ ***/
+#if defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__) && \
+ (!(defined(__BEOS__) || defined(__HAIKU__)) || \
+ (__GNUC__ > 2 || (__GNUC__ == 2 && __GNUC_MINOR__ >= 95)))
+static INLINE int iround(float f)
+{
+ int r;
+ __asm__ ("fistpl %0" : "=m" (r) : "t" (f) : "st");
+ return r;
+}
+#define IROUND(x) iround(x)
+#elif defined(USE_X86_ASM) && defined(_MSC_VER)
+static INLINE int iround(float f)
+{
+ int r;
+ _asm {
+ fld f
+ fistp r
+ }
+ return r;
+}
+#define IROUND(x) iround(x)
+#elif defined(__WATCOMC__) && defined(__386__)
+long iround(float f);
+#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)))
+#endif
+
+
+/***
+ *** IROUND_POS: return (as an integer) positive float rounded to nearest int
+ ***/
+#ifdef DEBUG
+#define IROUND_POS(f) (assert((f) >= 0.0F), IROUND(f))
+#else
+#define IROUND_POS(f) (IROUND(f))
+#endif
+
+
+/***
+ *** IFLOOR: return (as an integer) floor of float
+ ***/
+#if defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__)
+/*
+ * IEEE floor for computers that round to nearest or even.
+ * 'f' must be between -4194304 and 4194303.
+ * This floor operation is done by "(iround(f + .5) + iround(f - .5)) >> 1",
+ * but uses some IEEE specific tricks for better speed.
+ * Contributed by Josh Vanderhoof
+ */
+static INLINE int ifloor(float f)
+{
+ int ai, bi;
+ double af, bf;
+ af = (3 << 22) + 0.5 + (double)f;
+ bf = (3 << 22) + 0.5 - (double)f;
+ /* GCC generates an extra fstp/fld without this. */
+ __asm__ ("fstps %0" : "=m" (ai) : "t" (af) : "st");
+ __asm__ ("fstps %0" : "=m" (bi) : "t" (bf) : "st");
+ return (ai - bi) >> 1;
+}
+#define IFLOOR(x) ifloor(x)
+#elif defined(USE_IEEE)
+static INLINE int ifloor(float f)
+{
+ int ai, bi;
+ double af, bf;
+ fi_type u;
+
+ af = (3 << 22) + 0.5 + (double)f;
+ bf = (3 << 22) + 0.5 - (double)f;
+ u.f = (float) af; ai = u.i;
+ u.f = (float) bf; bi = u.i;
+ return (ai - bi) >> 1;
+}
+#define IFLOOR(x) ifloor(x)
+#else
+static INLINE int ifloor(float f)
+{
+ int i = IROUND(f);
+ return (i > f) ? i - 1 : i;
+}
+#define IFLOOR(x) ifloor(x)
+#endif
+
+
+/***
+ *** ICEIL: return (as an integer) ceiling of float
+ ***/
+#if defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__)
+/*
+ * IEEE ceil for computers that round to nearest or even.
+ * 'f' must be between -4194304 and 4194303.
+ * This ceil operation is done by "(iround(f + .5) + iround(f - .5) + 1) >> 1",
+ * but uses some IEEE specific tricks for better speed.
+ * Contributed by Josh Vanderhoof
+ */
+static INLINE int iceil(float f)
+{
+ int ai, bi;
+ double af, bf;
+ af = (3 << 22) + 0.5 + (double)f;
+ bf = (3 << 22) + 0.5 - (double)f;
+ /* GCC generates an extra fstp/fld without this. */
+ __asm__ ("fstps %0" : "=m" (ai) : "t" (af) : "st");
+ __asm__ ("fstps %0" : "=m" (bi) : "t" (bf) : "st");
+ return (ai - bi + 1) >> 1;
+}
+#define ICEIL(x) iceil(x)
+#elif defined(USE_IEEE)
+static INLINE int iceil(float f)
+{
+ int ai, bi;
+ double af, bf;
+ fi_type u;
+ af = (3 << 22) + 0.5 + (double)f;
+ bf = (3 << 22) + 0.5 - (double)f;
+ u.f = (float) af; ai = u.i;
+ u.f = (float) bf; bi = u.i;
+ return (ai - bi + 1) >> 1;
+}
+#define ICEIL(x) iceil(x)
+#else
+static INLINE int iceil(float f)
+{
+ int i = IROUND(f);
+ return (i < f) ? i + 1 : i;
+}
+#define ICEIL(x) iceil(x)
+#endif
+
+
+/**
+ * Is x a power of two?
+ */
+static INLINE int
+_mesa_is_pow_two(int x)
+{
+ return !(x & (x - 1));
+}
+
+
+/***
+ *** 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 */
+/* This function/macro is sensitive to precision. Test very carefully
+ * if you change it!
+ */
+#define UNCLAMPED_FLOAT_TO_UBYTE(UB, F) \
+ do { \
+ fi_type __tmp; \
+ __tmp.f = (F); \
+ 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)
+#else
+#define UNCLAMPED_FLOAT_TO_UBYTE(ub, f) \
+ ub = ((GLubyte) IROUND(CLAMP((f), 0.0F, 1.0F) * 255.0F))
+#define CLAMPED_FLOAT_TO_UBYTE(ub, f) \
+ ub = ((GLubyte) IROUND((f) * 255.0F))
+#endif
+
+
+/**
+ * Return 1 if this is a little endian machine, 0 if big endian.
+ */
+static INLINE GLboolean
+_mesa_little_endian(void)
+{
+ const GLuint ui = 1; /* intentionally not static */
+ return *((const GLubyte *) &ui);
+}
+
+
+
+/**********************************************************************
+ * Functions
+ */
+
+extern void *
+_mesa_malloc( size_t bytes );
+
+extern void *
+_mesa_calloc( size_t bytes );
+
+extern void
+_mesa_free( void *ptr );
+
+extern void *
+_mesa_align_malloc( size_t bytes, unsigned long alignment );
+
+extern void *
+_mesa_align_calloc( size_t bytes, unsigned long alignment );
+
+extern void
+_mesa_align_free( void *ptr );
+
+extern void *
+_mesa_align_realloc(void *oldBuffer, size_t oldSize, size_t newSize,
+ unsigned long alignment);
+
+extern void *
+_mesa_exec_malloc( GLuint size );
+
+extern void
+_mesa_exec_free( void *addr );
+
+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 void
+_mesa_memset( void *dst, int val, size_t n );
+
extern void
-_mesa_InitDefaultImports(__GLimports *imports, void *driverCtx, void *other);
+_mesa_memset16( unsigned short *dst, unsigned short val, size_t n );
+
+extern void
+_mesa_bzero( void *dst, size_t n );
+
+extern int
+_mesa_memcmp( const void *s1, const void *s2, size_t n );
+
+extern double
+_mesa_sin(double a);
+
+extern float
+_mesa_sinf(float a);
+
+extern double
+_mesa_cos(double a);
+
+extern float
+_mesa_asinf(float x);
+
+extern float
+_mesa_atanf(float x);
+
+extern double
+_mesa_sqrtd(double x);
+
+extern float
+_mesa_sqrtf(float x);
+
+extern float
+_mesa_inv_sqrtf(float x);
+
+extern void
+_mesa_init_sqrt_table(void);
+
+extern double
+_mesa_pow(double x, double y);
+extern int
+_mesa_ffs(int32_t i);
+extern int
+_mesa_ffsll(int64_t i);
+
+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 void *
+_mesa_bsearch( const void *key, const void *base, size_t nmemb, size_t size,
+ int (*compar)(const void *, const void *) );
+
+extern char *
+_mesa_getenv( const char *var );
+
+extern char *
+_mesa_strstr( const char *haystack, const char *needle );
+
+extern char *
+_mesa_strncat( char *dest, const char *src, size_t n );
+
+extern char *
+_mesa_strcpy( char *dest, const char *src );
+
+extern char *
+_mesa_strncpy( char *dest, const char *src, size_t n );
+
+extern size_t
+_mesa_strlen( const char *s );
+
+extern int
+_mesa_strcmp( const char *s1, const char *s2 );
+
+extern int
+_mesa_strncmp( const char *s1, const char *s2, size_t n );
+
+extern char *
+_mesa_strdup( const char *s );
+
+extern int
+_mesa_atoi( const char *s );
+
+extern double
+_mesa_strtod( const char *s, char **end );
+
+extern int
+_mesa_sprintf( char *str, const char *fmt, ... );
+
+extern int
+_mesa_snprintf( char *str, size_t size, const char *fmt, ... );
+
+extern void
+_mesa_printf( const char *fmtString, ... );
+
+extern void
+_mesa_fprintf( FILE *f, const char *fmtString, ... );
+
+extern int
+_mesa_vsprintf( char *str, const char *fmt, va_list args );
+
+
+extern void
+_mesa_warning( __GLcontext *gc, const char *fmtString, ... );
+
+extern void
+_mesa_problem( const __GLcontext *ctx, const char *fmtString, ... );
+
+extern void
+_mesa_error( __GLcontext *ctx, GLenum error, const char *fmtString, ... );
+
+extern void
+_mesa_debug( const __GLcontext *ctx, const char *fmtString, ... );
+
+extern void
+_mesa_exit( int status );
+
+
+#ifdef __cplusplus
+}
#endif
+
+
+#endif /* IMPORTS_H */
projects / mesa.git / blobdiff