util.c File Reference

Tachyon cross-platform timers, special math function wrappers, and RNGs. More...

#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <math.h>
#include <sys/types.h>
#include <sys/stat.h>
#include <fcntl.h>
#include "tachyon.h"
#include "macros.h"
#include "util.h"
#include "parallel.h"
#include "ui.h"

Go to the source code of this file.

Data Structures
struct	rt_timer

Macros
#define	TACHYON_INTERNAL   1
#define	STDTIME

Functions
void	rt_finalize (void)
	Shut down Tachyon library for good, at final use before program termination. More...
void	rt_timer_start (rt_timerhandle v)
void	rt_timer_stop (rt_timerhandle v)
double	rt_timer_time (rt_timerhandle v)
rt_timerhandle	rt_timer_create (void)
void	rt_timer_destroy (rt_timerhandle v)
double	rt_timer_timenow (rt_timerhandle v)
unsigned int	rt_rand (unsigned int *idum)
void	rng_urand_init (rng_urand_handle *rngh)
void	rng_urand_seed (rng_urand_handle *rngh, unsigned int seed)
unsigned int	rng_urand (rng_urand_handle *rngh)
void	rng_frand_init (rng_frand_handle *rngh)
float	rng_frand (rng_frand_handle *rngh)
void	rng_frand_seed (rng_frand_handle *rngh, unsigned int seed)
void	rng_drand_init (rng_drand_handle *rngh)
double	rng_drand (rng_frand_handle *rngh)
void	rng_drand_seed (rng_frand_handle *rngh, unsigned int seed)
unsigned int	rng_seed_from_tid_nodeid (int tid, int node)
unsigned int	tea2 (unsigned int v0, unsigned int v1)
unsigned int	tea4 (unsigned int v0, unsigned int v1)
double	compute_goldenratio_phi (int dim)
float	goldenratioseq1d (int n)
void	goldenratioseq1d_incr (float *x)
void	goldenratioseq2d (int n, float *x, float *y)
void	goldenratioseq2d_incr (float *x, float *y)
void	goldenratioseq3d (int n, float *x, float *y, float *z)
void	goldenratioseq3d_incr (float *x, float *y, float *z)
void	jitter_offset2f (unsigned int *pval, float *xy)
void	jitter_disc2f (unsigned int *pval, float *dir)
void	jitter_sphere3f (rng_frand_handle *rngh, float *dir)

Detailed Description

Tachyon cross-platform timers, special math function wrappers, and RNGs.

Definition in file util.c.

Macro Definition Documentation

STDTIME

#define STDTIME

Definition at line 47 of file util.c.

TACHYON_INTERNAL

#define TACHYON_INTERNAL   1

Definition at line 26 of file util.c.

Function Documentation

compute_goldenratio_phi()

double compute_goldenratio_phi

(

int

dim

)

Definition at line 646 of file util.c.

goldenratioseq1d()

float goldenratioseq1d

(

int

n

)

Definition at line 658 of file util.c.

goldenratioseq1d_incr()

void goldenratioseq1d_incr

(

float *

x

)

Definition at line 668 of file util.c.

goldenratioseq2d()

void goldenratioseq2d	(	int	n,
		float *	x,
		float *	y
	)

Definition at line 677 of file util.c.

goldenratioseq2d_incr()

void goldenratioseq2d_incr	(	float *	x,
		float *	y
	)

Definition at line 692 of file util.c.

goldenratioseq3d()

void goldenratioseq3d	(	int	n,
		float *	x,
		float *	y,
		float *	z
	)

Definition at line 707 of file util.c.

goldenratioseq3d_incr()

void goldenratioseq3d_incr	(	float *	x,
		float *	y,
		float *	z
	)

Definition at line 726 of file util.c.

jitter_disc2f()

void jitter_disc2f	(	unsigned int *	pval,
		float *	dir
	)

Definition at line 758 of file util.c.

References COS, rt_rand(), RT_RAND_MAX_INV, SIN, and SQRT.

jitter_offset2f()

void jitter_offset2f	(	unsigned int *	pval,
		float *	xy
	)

Definition at line 751 of file util.c.

References rt_rand(), and RT_RAND_MAX_INV.

jitter_sphere3f()

void jitter_sphere3f	(	rng_frand_handle *	rngh,
		float *	dir
	)

Definition at line 779 of file util.c.

References rng_frand().

Referenced by shade_ambient_occlusion().

rng_drand()

double rng_drand

(

rng_frand_handle *

rngh

)

Definition at line 572 of file util.c.

References rng_urand(), and RT_RNG_MAX.

rng_drand_init()

void rng_drand_init

(

rng_drand_handle *

rngh

)

Definition at line 568 of file util.c.

References rng_urand_init().

rng_drand_seed()

void rng_drand_seed	(	rng_frand_handle *	rngh,
		unsigned int	seed
	)

Definition at line 576 of file util.c.

References rng_urand_seed().

rng_frand()

float rng_frand

(

rng_frand_handle *

rngh

)

Definition at line 560 of file util.c.

References rng_urand(), and RT_RNG_MAX.

Referenced by jitter_sphere3f().

rng_frand_init()

void rng_frand_init

(

rng_frand_handle *

rngh

)

Definition at line 556 of file util.c.

References rng_urand_init().

Referenced by camray_init().

rng_frand_seed()

void rng_frand_seed	(	rng_frand_handle *	rngh,
		unsigned int	seed
	)

Definition at line 564 of file util.c.

References rng_urand_seed().

Referenced by camray_init().

rng_seed_from_tid_nodeid()

unsigned int rng_seed_from_tid_nodeid	(	int	tid,
		int	node
	)

Definition at line 583 of file util.c.

rng_urand()

unsigned int rng_urand

(

rng_urand_handle *

rngh

)

Definition at line 501 of file util.c.

References rng_urand_handle::c, rng_urand_handle::k, rng_urand_handle::m, rng_urand_handle::w, rng_urand_handle::x, rng_urand_handle::y, and rng_urand_handle::z.

Referenced by rng_drand(), and rng_frand().

rng_urand_init()

void rng_urand_init

(

rng_urand_handle *

rngh

)

Definition at line 483 of file util.c.

References rng_urand_handle::c, rng_urand_handle::k, rng_urand_handle::m, rng_urand_handle::w, rng_urand_handle::x, rng_urand_handle::y, and rng_urand_handle::z.

Referenced by rng_drand_init(), and rng_frand_init().

rng_urand_seed()

void rng_urand_seed	(	rng_urand_handle *	rngh,
		unsigned int	seed
	)

Definition at line 493 of file util.c.

References rng_urand_handle::c, rng_urand_handle::w, rng_urand_handle::x, rng_urand_handle::y, and rng_urand_handle::z.

Referenced by rng_drand_seed(), and rng_frand_seed().

rt_finalize()

void rt_finalize

(

void

)

Shut down Tachyon library for good, at final use before program termination.

Tachyon may not be used after rt_finalize has been called.

Definition at line 153 of file api.c.

References FreeTextures(), global_parhnd, and rt_par_finish().

Referenced by animate_scene(), fly_scene(), and main().

rt_rand()

unsigned int rt_rand

(

unsigned int *

idum

)

Definition at line 324 of file util.c.

Referenced by adjust(), InitNoise(), jitter_disc2f(), jitter_offset2f(), rt_landscape(), sky_plane_background_texture(), and sky_sphere_background_texture().

rt_timer_create()

rt_timerhandle rt_timer_create

(

void

)

Definition at line 226 of file util.c.

Referenced by animate_scene(), fly_scene(), main(), rendercheck(), renderio(), and renderscene().

rt_timer_destroy()

void rt_timer_destroy

(

rt_timerhandle

v

)

Definition at line 233 of file util.c.

Referenced by animate_scene(), fly_scene(), main(), rendercheck(), renderio(), and renderscene().

rt_timer_start()

void rt_timer_start

(

rt_timerhandle

v

)

Definition at line 168 of file util.c.

References rt_timer::tz.

Referenced by animate_scene(), fly_scene(), main(), rendercheck(), renderio(), and renderscene().

rt_timer_stop()

void rt_timer_stop

(

rt_timerhandle

v

)

Definition at line 177 of file util.c.

References rt_timer::endtime, and rt_timer::tz.

Referenced by animate_scene(), fly_scene(), main(), rendercheck(), renderio(), renderscene(), and rt_timer_timenow().

rt_timer_time()

double rt_timer_time

(

rt_timerhandle

v

)

Definition at line 186 of file util.c.

References rt_timer::endtime.

Referenced by animate_scene(), fly_scene(), main(), rendercheck(), renderio(), renderscene(), and rt_timer_timenow().

rt_timer_timenow()

double rt_timer_timenow

(

rt_timerhandle

v

)

Definition at line 237 of file util.c.

References rt_timer_stop(), and rt_timer_time().

tea2()

unsigned int tea2	(	unsigned int	v0,
		unsigned int	v1
	)

Definition at line 614 of file util.c.

tea4()

unsigned int tea4	(	unsigned int	v0,
		unsigned int	v1
	)

Definition at line 626 of file util.c.

Referenced by sky_plane_background_texture(), sky_sphere_background_texture(), and thread_trace().