| 9 |
|
*/ |
| 10 |
|
|
| 11 |
|
#include "glare.h" |
| 12 |
< |
#include <sys/param.h> |
| 13 |
< |
/* compute rtrace buffer size */ |
| 14 |
< |
#ifndef PIPE_BUF |
| 15 |
< |
#define PIPE_BUF 512 /* hyperconservative */ |
| 16 |
< |
#endif |
| 17 |
< |
#define MAXPIX (PIPE_BUF/(6*sizeof(float)) - 1) |
| 12 |
> |
#include "resolu.h" |
| 13 |
> |
/* maximum rtrace buffer size */ |
| 14 |
> |
#define MAXPIX (4096/(6*sizeof(float))) |
| 15 |
|
|
| 16 |
< |
#ifndef BSD |
| 20 |
< |
#define vfork fork |
| 21 |
< |
#endif |
| 22 |
< |
|
| 23 |
< |
#define MAXSBUF 1023980 /* maximum total size of scanline buffer */ |
| 16 |
> |
#define MAXSBUF 786432 /* maximum total size of scanline buffer */ |
| 17 |
|
#define HSIZE 317 /* size of scanline hash table */ |
| 18 |
|
#define NRETIRE 16 /* number of scanlines to retire at once */ |
| 19 |
|
|
| 20 |
< |
int rt_pid = -1; /* process id for rtrace */ |
| 28 |
< |
int fd_tort, fd_fromrt; /* pipe descriptors */ |
| 20 |
> |
int rt_pd[3] = {-1,-1,-1}; /* process id & descriptors for rtrace */ |
| 21 |
|
|
| 22 |
|
FILE *pictfp = NULL; /* picture file pointer */ |
| 23 |
|
double exposure; /* picture exposure */ |
| 36 |
|
#define scandata(sl) ((COLR *)((sl)+1)) |
| 37 |
|
#define shash(y) ((y)%HSIZE) |
| 38 |
|
|
| 39 |
+ |
static int maxpix; /* maximum number of pixels to buffer */ |
| 40 |
+ |
|
| 41 |
|
static SCAN *freelist; /* scanline free list */ |
| 42 |
|
static SCAN *hashtab[HSIZE]; /* scanline hash table */ |
| 43 |
|
|
| 44 |
|
static long ncall = 0L; /* number of calls to getpictscan */ |
| 45 |
|
static long nread = 0L; /* number of scanlines read */ |
| 46 |
+ |
static long nrecl = 0L; /* number of scanlines reclaimed */ |
| 47 |
|
|
| 48 |
+ |
static int wrongformat = 0; |
| 49 |
+ |
|
| 50 |
|
SCAN *scanretire(); |
| 51 |
|
|
| 52 |
|
extern long ftell(); |
| 72 |
|
if (sl->y == y) { /* reclaim */ |
| 73 |
|
sl->next = hashtab[hi]; |
| 74 |
|
hashtab[hi] = sl; |
| 75 |
+ |
nrecl++; |
| 76 |
|
} |
| 77 |
|
return(sl); |
| 78 |
|
} |
| 136 |
|
{ |
| 137 |
|
static long lastcall = 0L; /* ncall at last report */ |
| 138 |
|
static long lastread = 0L; /* nread at last report */ |
| 139 |
+ |
static long lastrecl = 0L; /* nrecl at last report */ |
| 140 |
|
|
| 141 |
|
if (ncall == lastcall) |
| 142 |
|
return; |
| 143 |
< |
fprintf(stderr, "%s: %ld scanlines read in %ld calls\n", |
| 144 |
< |
progname, nread-lastread, ncall-lastcall); |
| 143 |
> |
fprintf(stderr, "%s: %ld scanlines read (%ld reclaimed) in %ld calls\n", |
| 144 |
> |
progname, nread-lastread, nrecl-lastrecl, ncall-lastcall); |
| 145 |
|
lastcall = ncall; |
| 146 |
|
lastread = nread; |
| 147 |
+ |
lastrecl = nrecl; |
| 148 |
|
} |
| 149 |
|
#endif |
| 150 |
|
|
| 154 |
|
FVECT vd; |
| 155 |
|
{ |
| 156 |
|
FVECT pp; |
| 157 |
< |
double vpx, vpy, vpz; |
| 157 |
> |
FVECT ip; |
| 158 |
|
COLOR res; |
| 159 |
|
|
| 160 |
|
if (pictfp == NULL) |
| 162 |
|
pp[0] = pictview.vp[0] + vd[0]; |
| 163 |
|
pp[1] = pictview.vp[1] + vd[1]; |
| 164 |
|
pp[2] = pictview.vp[2] + vd[2]; |
| 165 |
< |
viewpixel(&vpx, &vpy, &vpz, &pictview, pp); |
| 166 |
< |
if (vpz <= FTINY || vpx < 0. || vpx >= 1. || vpy < 0. || vpy >= 1.) |
| 165 |
> |
viewloc(ip, &pictview, pp); |
| 166 |
> |
if (ip[2] <= FTINY || ip[0] < 0. || ip[0] >= 1. || |
| 167 |
> |
ip[1] < 0. || ip[1] >= 1.) |
| 168 |
|
return(-1.0); |
| 169 |
< |
colr_color(res, getpictscan((int)(vpy*pysiz))[(int)(vpx*pxsiz)]); |
| 169 |
> |
colr_color(res, getpictscan((int)(ip[1]*pysiz))[(int)(ip[0]*pxsiz)]); |
| 170 |
|
return(luminance(res)/exposure); |
| 171 |
|
} |
| 172 |
|
|
| 176 |
|
int vh, vv; |
| 177 |
|
{ |
| 178 |
|
FVECT dir; |
| 179 |
< |
float rt_buf[6]; |
| 179 |
> |
float rt_buf[12]; |
| 180 |
|
double res; |
| 181 |
|
|
| 182 |
|
if (compdir(dir, vh, vv) < 0) |
| 184 |
|
npixinvw++; |
| 185 |
|
if ((res = pict_val(dir)) >= 0.0) |
| 186 |
|
return(res); |
| 187 |
< |
if (rt_pid == -1) { |
| 187 |
> |
if (rt_pd[0] == -1) { |
| 188 |
|
npixmiss++; |
| 189 |
|
return(-1.0); |
| 190 |
|
} |
| 216 |
|
#endif |
| 217 |
|
n = 0; |
| 218 |
|
for (vh = -hsize; vh <= hsize; vh++) { |
| 219 |
< |
if (compdir(dir, vh, vv) < 0) { /* off viewable region */ |
| 219 |
> |
if (compdir(dir, vh, vv) < 0) { /* not in view */ |
| 220 |
|
vb[vh+hsize] = -1.0; |
| 221 |
|
continue; |
| 222 |
|
} |
| 223 |
|
npixinvw++; |
| 224 |
|
if ((vb[vh+hsize] = pict_val(dir)) >= 0.0) |
| 225 |
|
continue; |
| 226 |
< |
if (rt_pid == -1) { /* missing information */ |
| 226 |
> |
if (rt_pd[0] == -1) { /* missing information */ |
| 227 |
|
npixmiss++; |
| 228 |
|
continue; |
| 229 |
|
} |
| 230 |
|
/* send to rtrace */ |
| 231 |
< |
if (n >= MAXPIX) { /* flush */ |
| 231 |
> |
if (n >= maxpix) { /* flush */ |
| 232 |
|
rt_compute(rt_buf, n); |
| 233 |
|
while (n-- > 0) |
| 234 |
|
vb[buf_vh[n]+hsize] = luminance(rt_buf+3*n); |
| 257 |
|
float *pb; |
| 258 |
|
int np; |
| 259 |
|
{ |
| 259 |
– |
static float nbuf[6] = {0.,0.,0.,0.,0.,0.}; |
| 260 |
– |
|
| 260 |
|
#ifdef DEBUG |
| 261 |
|
if (verbose && np > 1) |
| 262 |
|
fprintf(stderr, "%s: sending %d samples to rtrace...\n", |
| 263 |
|
progname, np); |
| 264 |
|
#endif |
| 265 |
< |
if (writebuf(fd_tort,(char *)pb,6*sizeof(float)*np) < 6*sizeof(float)*np |
| 266 |
< |
|| writebuf(fd_tort,(char *)nbuf,sizeof(nbuf)) < sizeof(nbuf)) { |
| 267 |
< |
fprintf(stderr, "%s: error writing to rtrace process\n", |
| 265 |
> |
bzero(pb+6*np, 6*sizeof(float)); |
| 266 |
> |
if (process(rt_pd, pb, pb, 3*sizeof(float)*np, |
| 267 |
> |
6*sizeof(float)*(np+1)) < 3*sizeof(float)*np) { |
| 268 |
> |
fprintf(stderr, "%s: rtrace communication error\n", |
| 269 |
|
progname); |
| 270 |
|
exit(1); |
| 271 |
|
} |
| 272 |
– |
if (readbuf(fd_fromrt, (char *)pb, 3*sizeof(float)*np) |
| 273 |
– |
< 3*sizeof(float)*np) { |
| 274 |
– |
fprintf(stderr, "%s: error reading from rtrace process\n", |
| 275 |
– |
progname); |
| 276 |
– |
exit(1); |
| 277 |
– |
} |
| 272 |
|
} |
| 273 |
|
|
| 274 |
|
|
| 275 |
|
getexpos(s) /* get exposure from header line */ |
| 276 |
|
char *s; |
| 277 |
|
{ |
| 278 |
+ |
char fmt[32]; |
| 279 |
+ |
|
| 280 |
|
if (isexpos(s)) |
| 281 |
|
exposure *= exposval(s); |
| 282 |
+ |
else if (isformat(s)) { |
| 283 |
+ |
formatval(fmt, s); |
| 284 |
+ |
wrongformat = strcmp(fmt, COLRFMT); |
| 285 |
+ |
} |
| 286 |
|
} |
| 287 |
|
|
| 288 |
|
|
| 289 |
|
open_pict(fn) /* open picture file */ |
| 290 |
|
char *fn; |
| 291 |
|
{ |
| 292 |
– |
register int i; |
| 293 |
– |
|
| 292 |
|
if ((pictfp = fopen(fn, "r")) == NULL) { |
| 293 |
|
fprintf("%s: cannot open\n", fn); |
| 294 |
|
exit(1); |
| 295 |
|
} |
| 296 |
|
exposure = 1.0; |
| 297 |
< |
getheader(pictfp, getexpos); |
| 298 |
< |
if (fgetresolu(&pxsiz, &pysiz, pictfp) != (YMAJOR|YDECR)) { |
| 299 |
< |
fprintf("%s: bad picture resolution\n", fn); |
| 297 |
> |
getheader(pictfp, getexpos, NULL); |
| 298 |
> |
if (wrongformat || !fscnresolu(&pxsiz, &pysiz, pictfp)) { |
| 299 |
> |
fprintf(stderr, "%s: incompatible picture format\n", fn); |
| 300 |
|
exit(1); |
| 301 |
|
} |
| 302 |
|
initscans(); |
| 305 |
|
|
| 306 |
|
close_pict() /* done with picture */ |
| 307 |
|
{ |
| 310 |
– |
register int i; |
| 311 |
– |
|
| 308 |
|
if (pictfp == NULL) |
| 309 |
|
return; |
| 310 |
|
fclose(pictfp); |
| 316 |
|
fork_rtrace(av) /* open pipe and start rtrace */ |
| 317 |
|
char *av[]; |
| 318 |
|
{ |
| 319 |
< |
int p0[2], p1[2]; |
| 319 |
> |
int rval; |
| 320 |
|
|
| 321 |
< |
if (pipe(p0) < 0 || pipe(p1) < 0) { |
| 321 |
> |
rval = open_process(rt_pd, av); |
| 322 |
> |
if (rval < 0) { |
| 323 |
|
perror(progname); |
| 324 |
|
exit(1); |
| 325 |
|
} |
| 326 |
< |
if ((rt_pid = vfork()) == 0) { /* if child */ |
| 327 |
< |
close(p0[1]); |
| 331 |
< |
close(p1[0]); |
| 332 |
< |
if (p0[0] != 0) { /* connect p0 to stdin */ |
| 333 |
< |
dup2(p0[0], 0); |
| 334 |
< |
close(p0[0]); |
| 335 |
< |
} |
| 336 |
< |
if (p1[1] != 0) { /* connect p1 to stdout */ |
| 337 |
< |
dup2(p1[1], 1); |
| 338 |
< |
close(p1[1]); |
| 339 |
< |
} |
| 340 |
< |
execvp(av[0], av); |
| 341 |
< |
perror(av[0]); |
| 342 |
< |
_exit(127); |
| 343 |
< |
} |
| 344 |
< |
if (rt_pid == -1) { |
| 345 |
< |
perror(progname); |
| 326 |
> |
if (rval == 0) { |
| 327 |
> |
fprintf(stderr, "%s: command not found\n", av[0]); |
| 328 |
|
exit(1); |
| 329 |
|
} |
| 330 |
< |
close(p0[0]); |
| 331 |
< |
close(p1[1]); |
| 332 |
< |
fd_tort = p0[1]; |
| 333 |
< |
fd_fromrt = p1[0]; |
| 330 |
> |
maxpix = rval/(6*sizeof(float)); |
| 331 |
> |
if (maxpix > MAXPIX) |
| 332 |
> |
maxpix = MAXPIX; |
| 333 |
> |
maxpix--; |
| 334 |
|
} |
| 335 |
|
|
| 336 |
|
|
| 337 |
|
done_rtrace() /* wait for rtrace to finish */ |
| 338 |
|
{ |
| 339 |
< |
int pid, status; |
| 339 |
> |
int status; |
| 340 |
|
|
| 341 |
< |
if (rt_pid == -1) |
| 342 |
< |
return; |
| 361 |
< |
close(fd_tort); |
| 362 |
< |
close(fd_fromrt); |
| 363 |
< |
while ((pid = wait(&status)) != -1 && pid != rt_pid) |
| 364 |
< |
; |
| 365 |
< |
if (pid == rt_pid && status != 0) { |
| 341 |
> |
status = close_process(rt_pd); |
| 342 |
> |
if (status > 0) { |
| 343 |
|
fprintf(stderr, "%s: bad status (%d) from rtrace\n", |
| 344 |
|
progname, status); |
| 345 |
|
exit(1); |
| 346 |
|
} |
| 347 |
< |
rt_pid = -1; |
| 347 |
> |
rt_pd[0] = -1; |
| 348 |
|
} |
| 349 |
|
|
| 350 |
|
|
| 374 |
– |
int |
| 375 |
– |
readbuf(fd, bpos, siz) |
| 376 |
– |
int fd; |
| 377 |
– |
char *bpos; |
| 378 |
– |
int siz; |
| 379 |
– |
{ |
| 380 |
– |
register int cc, nrem = siz; |
| 381 |
– |
|
| 382 |
– |
while (nrem > 0 && (cc = read(fd, bpos, nrem)) > 0) { |
| 383 |
– |
bpos += cc; |
| 384 |
– |
nrem -= cc; |
| 385 |
– |
} |
| 386 |
– |
if (cc < 0) |
| 387 |
– |
return(cc); |
| 388 |
– |
return(siz-nrem); |
| 389 |
– |
} |
| 390 |
– |
|
| 391 |
– |
|
| 392 |
– |
int |
| 393 |
– |
writebuf(fd, bpos, siz) |
| 394 |
– |
char *bpos; |
| 395 |
– |
int siz; |
| 396 |
– |
{ |
| 397 |
– |
register int cc, nrem = siz; |
| 398 |
– |
|
| 399 |
– |
while (nrem > 0 && (cc = write(fd, bpos, nrem)) > 0) { |
| 400 |
– |
bpos += cc; |
| 401 |
– |
nrem -= cc; |
| 402 |
– |
} |
| 403 |
– |
if (cc < 0) |
| 404 |
– |
return(cc); |
| 405 |
– |
return(siz-nrem); |
| 406 |
– |
} |
| 407 |
– |
|
| 408 |
– |
|
| 351 |
|
SCAN * |
| 352 |
|
scanretire() /* retire old scanlines to free list */ |
| 353 |
|
{ |
| 354 |
|
SCAN *sold[NRETIRE]; |
| 413 |
– |
SCAN head; |
| 355 |
|
int n; |
| 356 |
|
int h; |
| 357 |
|
register SCAN *sl; |
| 358 |
|
register int i; |
| 359 |
|
/* grab the NRETIRE oldest scanlines */ |
| 360 |
|
sold[n = 0] = NULL; |
| 361 |
< |
for (h = 0; h < HSIZE; h++) { |
| 362 |
< |
head.next = hashtab[h]; |
| 363 |
< |
sl = &head; |
| 364 |
< |
while (sl->next != NULL) { |
| 424 |
< |
for (i = n; i && sold[i-1]->lused > sl->next->lused; i--) |
| 425 |
< |
if (i == NRETIRE) { /* reallocate */ |
| 426 |
< |
register int oh; |
| 427 |
< |
oh = shash(sold[NRETIRE-1]->y); |
| 428 |
< |
sold[NRETIRE-1]->next = hashtab[oh]; |
| 429 |
< |
if (h == oh) { |
| 430 |
< |
head.next = sold[NRETIRE-1]; |
| 431 |
< |
if (sl == &head) |
| 432 |
< |
sl = head.next; |
| 433 |
< |
} else |
| 434 |
< |
hashtab[oh] = sold[NRETIRE-1]; |
| 435 |
< |
} else /* else bubble up */ |
| 361 |
> |
for (h = 0; h < HSIZE; h++) |
| 362 |
> |
for (sl = hashtab[h]; sl != NULL; sl = sl->next) { |
| 363 |
> |
for (i = n; i && sold[i-1]->lused > sl->lused; i--) |
| 364 |
> |
if (i < NRETIRE) |
| 365 |
|
sold[i] = sold[i-1]; |
| 366 |
|
if (i < NRETIRE) { |
| 367 |
< |
sold[i] = sl->next; |
| 439 |
< |
sl->next = sl->next->next; |
| 367 |
> |
sold[i] = sl; |
| 368 |
|
if (n < NRETIRE) /* grow list */ |
| 369 |
|
n++; |
| 370 |
< |
} else |
| 370 |
> |
} |
| 371 |
> |
} |
| 372 |
> |
/* put scanlines into free list */ |
| 373 |
> |
for (i = 0; i < n; i++) { |
| 374 |
> |
h = shash(sold[i]->y); |
| 375 |
> |
sl = hashtab[h]; |
| 376 |
> |
if (sl == sold[i]) |
| 377 |
> |
hashtab[h] = sl->next; |
| 378 |
> |
else { |
| 379 |
> |
while (sl->next != sold[i]) /* IS in list */ |
| 380 |
|
sl = sl->next; |
| 381 |
+ |
sl->next = sold[i]->next; |
| 382 |
|
} |
| 383 |
< |
hashtab[h] = head.next; |
| 383 |
> |
if (i > 0) { /* save oldest as return value */ |
| 384 |
> |
sold[i]->next = freelist; |
| 385 |
> |
freelist = sold[i]; |
| 386 |
> |
} |
| 387 |
|
} |
| 447 |
– |
/* put scanlines into free list */ |
| 448 |
– |
for (i = 1; i < n; i++) { |
| 449 |
– |
sold[i]->next = freelist; |
| 450 |
– |
freelist = sold[i]; |
| 451 |
– |
} |
| 388 |
|
return(sold[0]); |
| 389 |
|
} |
| 390 |
|
|
| 410 |
|
/* allocate scanline buffers */ |
| 411 |
|
scansize = sizeof(SCAN) + pxsiz*sizeof(COLR); |
| 412 |
|
#ifdef ALIGN |
| 413 |
< |
scansize = scansize+(sizeof(ALIGN)-1)) & ~(sizeof(ALIGN)-1); |
| 413 |
> |
scansize = scansize+(sizeof(ALIGN)-1) & ~(sizeof(ALIGN)-1); |
| 414 |
|
#endif |
| 415 |
|
i = MAXSBUF / scansize; /* compute number to allocate */ |
| 416 |
|
if (i > HSIZE) |