/*
* Mesa 3-D graphics library
- * Version: 7.5
*
* Copyright (C) 1999-2008 Brian Paul All Rights Reserved.
*
* 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.
+ * THE AUTHORS OR COPYRIGHT HOLDERS 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.
*/
#define IMPORTS_H
+#include <stdlib.h>
+#include <stdarg.h>
+#include <string.h>
#include "compiler.h"
#include "glheader.h"
-#include "errors.h"
+#include "util/bitscan.h"
#ifdef __cplusplus
extern "C" {
/** Memory macros */
/*@{*/
-/** Allocate \p BYTES bytes */
-#define MALLOC(BYTES) malloc(BYTES)
-/** Allocate and zero \p BYTES bytes */
-#define CALLOC(BYTES) calloc(1, BYTES)
/** Allocate a structure of type \p T */
#define MALLOC_STRUCT(T) (struct T *) malloc(sizeof(struct T))
/** Allocate and zero a structure of type \p T */
#define CALLOC_STRUCT(T) (struct T *) calloc(1, sizeof(struct T))
-/** Free memory */
-#define FREE(PTR) free(PTR)
/*@}*/
/**
* Sometimes we treat GLfloats as GLints. On x86 systems, moving a float
- * as a int (thereby using integer registers instead of FP registers) is
+ * as an 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;
+typedef union { GLfloat f; GLint i; GLuint u; } 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
- ***/
-#define SQRTF(X) (float) sqrt((float) (X))
-
-
-/***
- *** INV_SQRTF: single-precision inverse square root
- ***/
-#define INV_SQRTF(X) (1.0F / SQRTF(X))
-
-
-/**
- * \name Work-arounds for platforms that lack C99 math functions
- */
-/*@{*/
-#if (!defined(_XOPEN_SOURCE) || (_XOPEN_SOURCE < 600)) && !defined(_ISOC99_SOURCE) \
- && (!defined(__STDC_VERSION__) || (__STDC_VERSION__ < 199901L)) \
- && (!defined(_MSC_VER) || (_MSC_VER < 1400))
-#define acosf(f) ((float) acos(f))
-#define asinf(f) ((float) asin(f))
-#define atan2f(x,y) ((float) atan2(x,y))
-#define atanf(f) ((float) atan(f))
-#define cielf(f) ((float) ciel(f))
-#define cosf(f) ((float) cos(f))
-#define coshf(f) ((float) cosh(f))
-#define expf(f) ((float) exp(f))
-#define exp2f(f) ((float) exp2(f))
-#define floorf(f) ((float) floor(f))
-#define logf(f) ((float) log(f))
-
-#ifdef ANDROID
-#define log2f(f) (logf(f) * (float) (1.0 / M_LN2))
-#else
-#define log2f(f) ((float) log2(f))
-#endif
-
-#define powf(x,y) ((float) pow(x,y))
-#define sinf(f) ((float) sin(f))
-#define sinhf(f) ((float) sinh(f))
-#define sqrtf(f) ((float) sqrt(f))
-#define tanf(f) ((float) tan(f))
-#define tanhf(f) ((float) tanh(f))
-#define acoshf(f) ((float) acosh(f))
-#define asinhf(f) ((float) asinh(f))
-#define atanhf(f) ((float) atanh(f))
-#endif
-
-#if defined(_MSC_VER)
-static inline float truncf(float x) { return x < 0.0f ? ceilf(x) : floorf(x); }
-static inline float exp2f(float x) { return powf(2.0f, x); }
-static inline float log2f(float x) { return logf(x) * 1.442695041f; }
-static inline float asinhf(float x) { return logf(x + sqrtf(x * x + 1.0f)); }
-static inline float acoshf(float x) { return logf(x + sqrtf(x * x - 1.0f)); }
-static inline float atanhf(float x) { return (logf(1.0f + x) - logf(1.0f - x)) / 2.0f; }
-static inline int isblank(int ch) { return ch == ' ' || ch == '\t'; }
-#define strtoll(p, e, b) _strtoi64(p, e, b)
-#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)
{
+#if 0
+ /* This is pretty fast, but not accurate enough (only 2 fractional bits).
+ * Based on code from http://www.stereopsis.com/log2.html
+ */
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)
-{
+ /* Pretty fast, and accurate.
+ * Based on code from http://www.flipcode.com/totd/
+ */
fi_type num;
GLint log_2;
- num.f = val;
+ num.f = x;
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).
+
+
+
+/**
+ * finite macro.
*/
-#define LOG2(x) ((GLfloat) (log(x) * 1.442695F))
+#if defined(_MSC_VER)
+# define finite _finite
#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)
+#if 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
#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
-
-
/**
* Convert float to int by rounding to nearest integer, away from zero.
*/
return (int) ((f >= 0.0F) ? (f + 0.5F) : (f - 0.5F));
}
+/**
+ * Convert double to int by rounding to nearest integer, away from zero.
+ */
+static inline int IROUNDD(double d)
+{
+ return (int) ((d >= 0.0) ? (d + 0.5) : (d - 0.5));
+}
/**
* Convert float to int64 by rounding to nearest integer.
return (int) (f + 0.5F);
}
-
-/**
- * Convert float to int using a fast method. The rounding mode may vary.
- * XXX We could use an x86-64/SSE2 version here.
- */
-#if defined(USE_X86_ASM) && defined(__GNUC__) && defined(__i386__)
-static inline int F_TO_I(float f)
+/** Return (as an integer) floor of float */
+static inline int IFLOOR(float f)
{
- int r;
- __asm__ ("fistpl %0" : "=m" (r) : "t" (f) : "st");
- return r;
-}
-#elif defined(USE_X86_ASM) && defined(_MSC_VER)
-static inline int F_TO_I(float f)
-{
- int r;
- _asm {
- fld f
- fistp r
- }
- return r;
-}
-#elif defined(__WATCOMC__) && defined(__386__)
-long F_TO_I(float f);
-#pragma aux iround = \
- "push eax" \
- "fistp dword ptr [esp]" \
- "pop eax" \
- parm [8087] \
- value [eax] \
- modify exact [eax];
-#else
-#define F_TO_I(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)
-{
+ /*
+ * 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
+ */
int ai, bi;
double af, bf;
af = (3 << 22) + 0.5 + (double)f;
__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)
-{
+#else
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
/**
static inline int32_t
_mesa_next_pow_two_32(uint32_t x)
{
-#if defined(__GNUC__) && \
- ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */
+#ifdef HAVE___BUILTIN_CLZ
uint32_t y = (x != 1);
return (1 + y) << ((__builtin_clz(x - y) ^ 31) );
#else
static inline int64_t
_mesa_next_pow_two_64(uint64_t x)
{
-#if defined(__GNUC__) && \
- ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */
+#ifdef HAVE___BUILTIN_CLZLL
uint64_t y = (x != 1);
- if (sizeof(x) == sizeof(long))
- return (1 + y) << ((__builtin_clzl(x - y) ^ 63));
- else
- return (1 + y) << ((__builtin_clzll(x - y) ^ 63));
+ STATIC_ASSERT(sizeof(x) == sizeof(long long));
+ return (1 + y) << ((__builtin_clzll(x - y) ^ 63));
#else
x--;
x |= x >> 1;
static inline GLuint
_mesa_logbase2(GLuint n)
{
-#if defined(__GNUC__) && \
- ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */
+#ifdef HAVE___BUILTIN_CLZ
return (31 - __builtin_clz(n | 1));
#else
GLuint pos = 0;
}
-/**
- * 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
*/
_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_memset16( unsigned short *dst, unsigned short val, size_t n );
-
-
-#ifndef FFS_DEFINED
-#define FFS_DEFINED 1
-#ifdef __GNUC__
-
-#if defined(__MINGW32__) || defined(__CYGWIN__) || defined(ANDROID) || defined(__APPLE__)
-#define ffs __builtin_ffs
-#define ffsll __builtin_ffsll
-#endif
-
-#else
-
-extern int ffs(int i);
-extern int ffsll(long long int i);
-
-#endif /*__ GNUC__ */
-#endif /* FFS_DEFINED */
-
-
-#if defined(__GNUC__) && ((__GNUC__ * 100 + __GNUC_MINOR__) >= 304) /* gcc 3.4 or later */
-#define _mesa_bitcount(i) __builtin_popcount(i)
-#define _mesa_bitcount_64(i) __builtin_popcountll(i)
-#else
-extern unsigned int
-_mesa_bitcount(unsigned int n);
-extern unsigned int
-_mesa_bitcount_64(uint64_t n);
-#endif
-
-
-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_strdup( const char *s );
-
-extern float
-_mesa_strtof( const char *s, char **end );
-
-extern unsigned int
-_mesa_str_checksum(const char *str);
-
extern int
_mesa_snprintf( char *str, size_t size, const char *fmt, ... ) PRINTFLIKE(3, 4);
_mesa_vsnprintf(char *str, size_t size, const char *fmt, va_list arg);
-#if defined(_MSC_VER) && !defined(snprintf)
-#define snprintf _snprintf
+#if defined(_WIN32) && !defined(HAVE_STRTOK_R)
+#define strtok_r strtok_s
#endif
-
#ifdef __cplusplus
}
#endif
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