| 1 |
#ifndef lint |
| 2 |
static const char RCSid[] = "$Id: rxpiece.cpp,v 2.11 2025/04/22 17:12:25 greg Exp $"; |
| 3 |
#endif |
| 4 |
/* |
| 5 |
* rxpiece.cpp - main for rxpiece tile rendering program |
| 6 |
*/ |
| 7 |
|
| 8 |
#include "copyright.h" |
| 9 |
|
| 10 |
#include <time.h> |
| 11 |
#include <signal.h> |
| 12 |
#include <sys/mman.h> |
| 13 |
#include <unistd.h> |
| 14 |
|
| 15 |
#include "platform.h" |
| 16 |
#include "RpictSimulManager.h" |
| 17 |
#include "func.h" |
| 18 |
#include "ambient.h" |
| 19 |
#include "pmapray.h" |
| 20 |
#include "random.h" |
| 21 |
|
| 22 |
const char *sigerr[NSIG]; /* signal error messages */ |
| 23 |
|
| 24 |
VIEW ourview = STDVIEW; /* global view parameters */ |
| 25 |
int hresolu = 1024; /* horizontal resolution */ |
| 26 |
int vresolu = 1024; /* vertical resolution */ |
| 27 |
double pixaspect = 1.0; /* pixel aspect ratio */ |
| 28 |
int hres, vres; /* current image resolution for srcdraw.c */ |
| 29 |
|
| 30 |
int tileGrid[2] = {5,5}; // tile subdivisions |
| 31 |
|
| 32 |
int psample = 4; /* pixel sample size */ |
| 33 |
double maxdiff = .05; /* max. difference for interpolation */ |
| 34 |
double dstrpix = 0.67; /* square pixel distribution */ |
| 35 |
|
| 36 |
double mblur = 0.; /* motion blur parameter (unused) */ |
| 37 |
|
| 38 |
double dblur = 0.; /* depth-of-field blur parameter */ |
| 39 |
|
| 40 |
int nproc = 1; /* number of processes to run (-1 in child) */ |
| 41 |
|
| 42 |
RpictSimulManager myRPmanager; // global simulation manager |
| 43 |
|
| 44 |
static void onsig(int signo); |
| 45 |
static void onalrm(int signo); |
| 46 |
static void sigdie(int signo, const char *msg); |
| 47 |
static void printdefaults(void); |
| 48 |
static RenderDataType rpiece(char *pout, RenderDataType dt, char *zout); |
| 49 |
|
| 50 |
/* rxpiece additional features */ |
| 51 |
#define RXPIECE_FEATURES "Recovery\nIrradianceCalc\nViewTypes=v,l,a,h,s,c\n" \ |
| 52 |
"ParticipatingMedia=Mist\n" \ |
| 53 |
"HessianAmbientCache\nAmbientAveraging\nAmbientValueSharing\n" \ |
| 54 |
"PixelJitter\nPixelSampling\nPixelDepthOfField\n" \ |
| 55 |
"SmallSourceDrawing\n" \ |
| 56 |
"AdaptiveShadowTesting\nOutputs=v,l\n" \ |
| 57 |
"OutputCS=RGB,XYZ,prims,spec\n" |
| 58 |
|
| 59 |
// Exit program |
| 60 |
void |
| 61 |
quit(int code) /* quit program */ |
| 62 |
{ |
| 63 |
exit(code); // don't bother to free data structs |
| 64 |
} |
| 65 |
|
| 66 |
/* Set default options */ |
| 67 |
static void |
| 68 |
default_options(void) |
| 69 |
{ |
| 70 |
shadthresh = .05; |
| 71 |
shadcert = .5; |
| 72 |
srcsizerat = .25; |
| 73 |
directrelay = 1; |
| 74 |
ambacc = 0.2; |
| 75 |
ambres = 64; |
| 76 |
ambdiv = 512; |
| 77 |
ambssamp = 128; |
| 78 |
maxdepth = 7; |
| 79 |
} |
| 80 |
|
| 81 |
int |
| 82 |
main(int argc, char *argv[]) |
| 83 |
{ |
| 84 |
#define check(ol,al) if (argv[i][ol] || \ |
| 85 |
badarg(argc-i-1,argv+i+1,al)) \ |
| 86 |
goto badopt |
| 87 |
#define check_bool(olen,var) switch (argv[i][olen]) { \ |
| 88 |
case '\0': var = !var; break; \ |
| 89 |
case 'y': case 'Y': case 't': case 'T': \ |
| 90 |
case '+': case '1': var = 1; break; \ |
| 91 |
case 'n': case 'N': case 'f': case 'F': \ |
| 92 |
case '-': case '0': var = 0; break; \ |
| 93 |
default: goto badopt; } |
| 94 |
RGBPRIMS our_prims; /* private output color primitives */ |
| 95 |
RenderDataType dtype = RDTrgbe; // output data flags |
| 96 |
char *outfile = NULL; |
| 97 |
char *zfile = NULL; |
| 98 |
int outfmt = 'c'; |
| 99 |
int rval; |
| 100 |
int i; |
| 101 |
/* set global program name */ |
| 102 |
fixargv0(argv[0]); |
| 103 |
/* feature check only? */ |
| 104 |
strcat(RFeatureList, RXPIECE_FEATURES); |
| 105 |
if (argc > 1 && !strcmp(argv[1], "-features")) |
| 106 |
return feature_status(argc-2, argv+2); |
| 107 |
/* initialize calcomp routines */ |
| 108 |
initfunc(); |
| 109 |
/* set defaults */ |
| 110 |
default_options(); |
| 111 |
/* option city */ |
| 112 |
for (i = 1; i < argc; i++) { |
| 113 |
/* expand arguments */ |
| 114 |
while ((rval = expandarg(&argc, &argv, i)) > 0) |
| 115 |
; |
| 116 |
if (rval < 0) { |
| 117 |
sprintf(errmsg, "cannot expand '%s'", argv[i]); |
| 118 |
error(SYSTEM, errmsg); |
| 119 |
} |
| 120 |
if (argv[i] == NULL || argv[i][0] != '-') |
| 121 |
break; /* break from options */ |
| 122 |
if (!strcmp(argv[i], "-version")) { |
| 123 |
puts(VersionID); |
| 124 |
quit(0); |
| 125 |
} |
| 126 |
if (!strcmp(argv[i], "-defaults") || |
| 127 |
!strcmp(argv[i], "-help")) { |
| 128 |
printdefaults(); |
| 129 |
quit(0); |
| 130 |
} |
| 131 |
rval = getrenderopt(argc-i, argv+i); |
| 132 |
if (rval >= 0) { |
| 133 |
i += rval; |
| 134 |
continue; |
| 135 |
} |
| 136 |
rval = getviewopt(&ourview, argc-i, argv+i); |
| 137 |
if (rval >= 0) { |
| 138 |
i += rval; |
| 139 |
continue; |
| 140 |
} |
| 141 |
/* rxpiece options */ |
| 142 |
switch (argv[i][1]) { |
| 143 |
case 'v': /* view file */ |
| 144 |
if (argv[i][2] != 'f') |
| 145 |
goto badopt; |
| 146 |
check(3,"s"); |
| 147 |
rval = viewfile(argv[++i], &ourview, NULL); |
| 148 |
if (rval < 0) { |
| 149 |
sprintf(errmsg, |
| 150 |
"cannot open view file \"%s\"", |
| 151 |
argv[i]); |
| 152 |
error(SYSTEM, errmsg); |
| 153 |
} else if (rval == 0) { |
| 154 |
sprintf(errmsg, |
| 155 |
"bad view file \"%s\"", |
| 156 |
argv[i]); |
| 157 |
error(USER, errmsg); |
| 158 |
} |
| 159 |
break; |
| 160 |
case 'n': /* number of processes */ |
| 161 |
check(2,"i"); |
| 162 |
nproc = atoi(argv[++i]); |
| 163 |
if (nproc < 0 && (nproc += RadSimulManager::GetNCores()) <= 0) |
| 164 |
nproc = 1; |
| 165 |
break; |
| 166 |
case 'f': /* output format */ |
| 167 |
if ((argv[i][2] != 'c') & (argv[i][2] != 'f') |
| 168 |
|| argv[i][3]) |
| 169 |
goto badopt; |
| 170 |
outfmt = argv[i][2]; |
| 171 |
break; |
| 172 |
case 'p': /* pixel */ |
| 173 |
switch (argv[i][2]) { |
| 174 |
case 's': /* sample */ |
| 175 |
check(3,"i"); |
| 176 |
psample = atoi(argv[++i]); |
| 177 |
if (psample < 1) psample = 1; |
| 178 |
break; |
| 179 |
case 't': /* threshold */ |
| 180 |
check(3,"f"); |
| 181 |
maxdiff = atof(argv[++i]); |
| 182 |
break; |
| 183 |
case 'j': /* jitter */ |
| 184 |
check(3,"f"); |
| 185 |
dstrpix = atof(argv[++i]); |
| 186 |
break; |
| 187 |
case 'a': /* aspect */ |
| 188 |
check(3,"f"); |
| 189 |
pixaspect = atof(argv[++i]); |
| 190 |
break; |
| 191 |
case 'd': /* aperture */ |
| 192 |
check(3,"f"); |
| 193 |
dblur = atof(argv[++i]); |
| 194 |
dblur *= (dblur > 0); |
| 195 |
break; |
| 196 |
case 'R': /* standard RGB output */ |
| 197 |
if (strcmp(argv[i]+2, "RGB")) |
| 198 |
goto badopt; |
| 199 |
myRPmanager.prims = stdprims; |
| 200 |
dtype = RDTnewCT(dtype, RDTrgbe); |
| 201 |
break; |
| 202 |
case 'X': /* XYZ output */ |
| 203 |
if (strcmp(argv[i]+2, "XYZ")) |
| 204 |
goto badopt; |
| 205 |
myRPmanager.prims = xyzprims; |
| 206 |
dtype = RDTnewCT(dtype, RDTxyze); |
| 207 |
break; |
| 208 |
case 'c': /* chromaticities */ |
| 209 |
check(3,"ffffffff"); |
| 210 |
rval = 0; |
| 211 |
for (int j = 0; j < 8; j++) { |
| 212 |
our_prims[0][j] = atof(argv[++i]); |
| 213 |
rval |= fabs(our_prims[0][j]-stdprims[0][j]) > .001; |
| 214 |
} |
| 215 |
if (rval) { |
| 216 |
if (!colorprimsOK(our_prims)) |
| 217 |
error(USER, "illegal primary chromaticities"); |
| 218 |
myRPmanager.prims = our_prims; |
| 219 |
} else |
| 220 |
myRPmanager.prims = stdprims; |
| 221 |
dtype = RDTnewCT(dtype, RDTrgbe); |
| 222 |
break; |
| 223 |
default: |
| 224 |
goto badopt; |
| 225 |
} |
| 226 |
break; |
| 227 |
case 'd': /* reference depth */ |
| 228 |
if (argv[i][2] || !myRPmanager.SetReferenceDepth(argv[++i])) |
| 229 |
goto badopt; |
| 230 |
dtype = RDTnewDT(dtype, RDTdshort); |
| 231 |
break; |
| 232 |
case 'x': /* x resolution */ |
| 233 |
check(2,"i"); |
| 234 |
hresolu = atoi(argv[++i]); |
| 235 |
break; |
| 236 |
case 'y': /* y resolution */ |
| 237 |
check(2,"i"); |
| 238 |
vresolu = atoi(argv[++i]); |
| 239 |
break; |
| 240 |
case 'X': /* horizontal tile subdivisions */ |
| 241 |
check(2,"i"); |
| 242 |
tileGrid[0] = atoi(argv[++i]); |
| 243 |
break; |
| 244 |
case 'Y': /* vertical tile subdivisions */ |
| 245 |
check(2,"i"); |
| 246 |
tileGrid[1] = atoi(argv[++i]); |
| 247 |
break; |
| 248 |
case 'o': /* output file */ |
| 249 |
check(2,"s"); |
| 250 |
outfile = argv[++i]; |
| 251 |
break; |
| 252 |
case 'z': /* z file */ |
| 253 |
check(2,"s"); |
| 254 |
zfile = argv[++i]; |
| 255 |
break; |
| 256 |
#if MAXCSAMP>3 |
| 257 |
case 'c': /* output spectral results */ |
| 258 |
if (argv[i][2] != 'o') |
| 259 |
goto badopt; |
| 260 |
rval = (myRPmanager.prims == NULL); |
| 261 |
check_bool(3,rval); |
| 262 |
if (rval) |
| 263 |
myRPmanager.prims = NULL; |
| 264 |
else if (myRPmanager.prims == NULL) |
| 265 |
myRPmanager.prims = stdprims; |
| 266 |
dtype = RDTnewCT(dtype, rval ? RDTscolr : RDTrgbe); |
| 267 |
break; |
| 268 |
#endif |
| 269 |
case 'w': /* warnings */ |
| 270 |
rval = erract[WARNING].pf != NULL; |
| 271 |
check_bool(2,rval); |
| 272 |
if (rval) erract[WARNING].pf = wputs; |
| 273 |
else erract[WARNING].pf = NULL; |
| 274 |
break; |
| 275 |
default: |
| 276 |
goto badopt; |
| 277 |
} |
| 278 |
} |
| 279 |
if (maxdiff <= FTINY) /* check for useless sampling */ |
| 280 |
psample = 1; |
| 281 |
if (outfile == NULL) |
| 282 |
error(USER, "missing output file (-o option)"); |
| 283 |
if (zfile == NULL) /* set up depth output */ |
| 284 |
dtype = RDTnewDT(dtype, RDTnone); |
| 285 |
else if (!RDTdepthT(dtype)) |
| 286 |
dtype = RDTnewDT(dtype, RDTdfloat); |
| 287 |
/* check pixel output type */ |
| 288 |
if ((myRPmanager.prims == NULL) & (NCSAMP == 3)) { |
| 289 |
myRPmanager.prims = stdprims; |
| 290 |
dtype = RDTnewCT(dtype, RDTrgbe); |
| 291 |
} |
| 292 |
if (outfmt == 'f') |
| 293 |
switch (RDTcolorT(dtype)) { |
| 294 |
case RDTrgbe: |
| 295 |
dtype = RDTnewCT(dtype, RDTrgb); |
| 296 |
break; |
| 297 |
case RDTxyze: |
| 298 |
dtype = RDTnewCT(dtype, RDTxyz); |
| 299 |
break; |
| 300 |
case RDTscolr: |
| 301 |
dtype = RDTnewCT(dtype, RDTscolor); |
| 302 |
break; |
| 303 |
case RDTrgb: |
| 304 |
case RDTxyz: |
| 305 |
case RDTscolor: |
| 306 |
break; |
| 307 |
default: |
| 308 |
error(INTERNAL, "botched color output type"); |
| 309 |
} |
| 310 |
/* set up signal handling */ |
| 311 |
sigdie(SIGINT, "Interrupt"); |
| 312 |
sigdie(SIGHUP, "Hangup"); |
| 313 |
sigdie(SIGTERM, "Terminate"); |
| 314 |
sigdie(SIGPIPE, "Broken pipe"); |
| 315 |
signal(SIGALRM, onalrm); // used to gracefully terminate |
| 316 |
#ifdef SIGXCPU |
| 317 |
sigdie(SIGXCPU, "CPU limit exceeded"); |
| 318 |
sigdie(SIGXFSZ, "File size exceeded"); |
| 319 |
#endif |
| 320 |
#ifdef NICE |
| 321 |
nice(NICE); /* lower priority */ |
| 322 |
#endif |
| 323 |
if (i < argc-1) |
| 324 |
goto badopt; |
| 325 |
// load octree |
| 326 |
if (!myRPmanager.LoadOctree(argv[i])) |
| 327 |
error(USER, "missing octree argument"); |
| 328 |
// add new header info |
| 329 |
myRPmanager.AddHeader(i, argv); |
| 330 |
{ |
| 331 |
char buf[128] = "SOFTWARE= "; |
| 332 |
strcpy(buf+10, VersionID); |
| 333 |
myRPmanager.AddHeader(buf); |
| 334 |
} |
| 335 |
// render tiles |
| 336 |
dtype = rpiece(outfile, dtype, zfile); |
| 337 |
|
| 338 |
ambsync(); // flush ambient cache |
| 339 |
|
| 340 |
ray_done_pmap(); /* PMAP: free photon maps */ |
| 341 |
|
| 342 |
quit(dtype==RDTnone); // status is 1 on failure |
| 343 |
|
| 344 |
badopt: |
| 345 |
sprintf(errmsg, "command line error at '%s'", argv[i]); |
| 346 |
error(USER, errmsg); |
| 347 |
return 1; /* pro forma return */ |
| 348 |
|
| 349 |
#undef check |
| 350 |
#undef check_bool |
| 351 |
} |
| 352 |
|
| 353 |
|
| 354 |
void |
| 355 |
wputs( /* warning output function */ |
| 356 |
const char *s |
| 357 |
) |
| 358 |
{ |
| 359 |
if (!erract[WARNING].pf) |
| 360 |
return; // warnings were disabled! |
| 361 |
int lasterrno = errno; |
| 362 |
eputs(s); |
| 363 |
errno = lasterrno; |
| 364 |
} |
| 365 |
|
| 366 |
|
| 367 |
void |
| 368 |
eputs( /* put string to stderr */ |
| 369 |
const char *s |
| 370 |
) |
| 371 |
{ |
| 372 |
static int midline = 0; |
| 373 |
|
| 374 |
if (!*s) |
| 375 |
return; |
| 376 |
if (!midline++) { |
| 377 |
fputs(progname, stderr); |
| 378 |
fputs(": ", stderr); |
| 379 |
} |
| 380 |
fputs(s, stderr); |
| 381 |
if (s[strlen(s)-1] == '\n') { |
| 382 |
fflush(stderr); |
| 383 |
midline = 0; |
| 384 |
} |
| 385 |
} |
| 386 |
|
| 387 |
|
| 388 |
static void |
| 389 |
onsig( /* fatal signal */ |
| 390 |
int signo |
| 391 |
) |
| 392 |
{ |
| 393 |
static int gotsig = 0; |
| 394 |
|
| 395 |
if (gotsig++) /* two signals and we're gone! */ |
| 396 |
_exit(signo); |
| 397 |
|
| 398 |
alarm(30); /* allow 30 seconds to clean up */ |
| 399 |
signal(SIGALRM, SIG_DFL); /* make certain we do die */ |
| 400 |
eputs("signal - "); |
| 401 |
eputs(sigerr[signo]); |
| 402 |
eputs("\n"); |
| 403 |
quit(3); |
| 404 |
} |
| 405 |
|
| 406 |
|
| 407 |
static bool gotALRM = false; // flag for ALRM signal |
| 408 |
|
| 409 |
static void |
| 410 |
onalrm(int signo) |
| 411 |
{ |
| 412 |
gotALRM = true; |
| 413 |
} |
| 414 |
|
| 415 |
|
| 416 |
static void |
| 417 |
sigdie( /* set fatal signal */ |
| 418 |
int signo, |
| 419 |
const char *msg |
| 420 |
) |
| 421 |
{ |
| 422 |
if (signal(signo, onsig) == SIG_IGN) |
| 423 |
signal(signo, SIG_IGN); |
| 424 |
sigerr[signo] = msg; |
| 425 |
} |
| 426 |
|
| 427 |
|
| 428 |
static void |
| 429 |
printdefaults(void) /* print default values to stdout */ |
| 430 |
{ |
| 431 |
printf("-n %-2d\t\t\t\t# number of rendering processes\n", nproc); |
| 432 |
printf("-vt%c\t\t\t\t# view type %s\n", ourview.type, |
| 433 |
ourview.type==VT_PER ? "perspective" : |
| 434 |
ourview.type==VT_PAR ? "parallel" : |
| 435 |
ourview.type==VT_HEM ? "hemispherical" : |
| 436 |
ourview.type==VT_ANG ? "angular" : |
| 437 |
ourview.type==VT_CYL ? "cylindrical" : |
| 438 |
ourview.type==VT_PLS ? "planisphere" : |
| 439 |
"unknown"); |
| 440 |
printf("-vp %f %f %f\t# view point\n", |
| 441 |
ourview.vp[0], ourview.vp[1], ourview.vp[2]); |
| 442 |
printf("-vd %f %f %f\t# view direction\n", |
| 443 |
ourview.vdir[0], ourview.vdir[1], ourview.vdir[2]); |
| 444 |
printf("-vu %f %f %f\t# view up\n", |
| 445 |
ourview.vup[0], ourview.vup[1], ourview.vup[2]); |
| 446 |
printf("-vh %f\t\t\t# view horizontal size\n", ourview.horiz); |
| 447 |
printf("-vv %f\t\t\t# view vertical size\n", ourview.vert); |
| 448 |
printf("-vo %f\t\t\t# view fore clipping plane\n", ourview.vfore); |
| 449 |
printf("-va %f\t\t\t# view aft clipping plane\n", ourview.vaft); |
| 450 |
printf("-vs %f\t\t\t# view shift\n", ourview.hoff); |
| 451 |
printf("-vl %f\t\t\t# view lift\n", ourview.voff); |
| 452 |
printf("-x %-9d\t\t\t# x resolution\n", hresolu); |
| 453 |
printf("-y %-9d\t\t\t# y resolution\n", vresolu); |
| 454 |
printf("-X %-9d\t\t\t# horizontal tile divisions\n", tileGrid[0]); |
| 455 |
printf("-Y %-9d\t\t\t# vertical tile divisions\n", tileGrid[1]); |
| 456 |
if (myRPmanager.prims == stdprims) |
| 457 |
printf("-pRGB\t\t\t\t# standard RGB color output\n"); |
| 458 |
else if (myRPmanager.prims == xyzprims) |
| 459 |
printf("-pXYZ\t\t\t\t# CIE XYZ color output\n"); |
| 460 |
else if (myRPmanager.prims != NULL) |
| 461 |
printf("-pc %.4f %.4f %.4f %.4f %.4f %.4f %.4f %.4f\t# output color primaries and white point\n", |
| 462 |
myRPmanager.prims[RED][0], myRPmanager.prims[RED][1], |
| 463 |
myRPmanager.prims[GRN][0], myRPmanager.prims[GRN][1], |
| 464 |
myRPmanager.prims[BLU][0], myRPmanager.prims[BLU][1], |
| 465 |
myRPmanager.prims[WHT][0], myRPmanager.prims[WHT][1]); |
| 466 |
if (NCSAMP > 3) |
| 467 |
printf(myRPmanager.prims != NULL ? "-co-\t\t\t\t# output tristimulus colors\n" : |
| 468 |
"-co+\t\t\t\t# output spectral values\n"); |
| 469 |
printf("-pa %f\t\t\t# pixel aspect ratio\n", pixaspect); |
| 470 |
printf("-pj %f\t\t\t# pixel jitter\n", dstrpix); |
| 471 |
printf("-pd %f\t\t\t# pixel depth-of-field\n", dblur); |
| 472 |
printf("-ps %-9d\t\t\t# pixel sample\n", psample); |
| 473 |
printf("-pt %f\t\t\t# pixel threshold\n", maxdiff); |
| 474 |
printf(erract[WARNING].pf != NULL ? |
| 475 |
"-w+\t\t\t\t# warning messages on\n" : |
| 476 |
"-w-\t\t\t\t# warning messages off\n"); |
| 477 |
print_rdefaults(); |
| 478 |
} |
| 479 |
|
| 480 |
|
| 481 |
// Struct for tracking tiles being rendered in mapped file / shared memory |
| 482 |
struct TileProg { |
| 483 |
short status; // 0==Unstarted, -1==InProgress, 1==Done |
| 484 |
pid_t pID; // process operating on tile |
| 485 |
} *tprog = NULL; // shared tile progress array |
| 486 |
|
| 487 |
#define tile_p(ti) (tprog + (ti)[1]*tileGrid[0] + (ti)[0]) |
| 488 |
|
| 489 |
// Return true if tile is renderable |
| 490 |
static bool |
| 491 |
renderable_tile(TileProg *tp) |
| 492 |
{ |
| 493 |
if (tp->status < 0 && kill(tp->pID, 0) < 0) |
| 494 |
tp->status = 0; // dead process - reset |
| 495 |
|
| 496 |
return !tp->status; |
| 497 |
} |
| 498 |
|
| 499 |
|
| 500 |
// handle multi-processing if requested, return true if all done |
| 501 |
static bool |
| 502 |
children_finished() |
| 503 |
{ |
| 504 |
if (nproc <= 1) // single process -> run in parent |
| 505 |
return false; |
| 506 |
int cnt = 0; // else count ready-to-go tiles |
| 507 |
int ti[2]; |
| 508 |
for (ti[1] = 0; ti[1] < tileGrid[1]; ti[1]++) |
| 509 |
for (ti[0] = 0; ti[0] < tileGrid[0]; ti[0]++) |
| 510 |
cnt += renderable_tile(tile_p(ti)); |
| 511 |
if (!cnt) |
| 512 |
return false; // parent can do nothing |
| 513 |
if (cnt < nproc) { |
| 514 |
sprintf(errmsg, "only %d renderable tiles, reducing process count", cnt); |
| 515 |
error(WARNING, errmsg); |
| 516 |
if ((nproc = cnt) == 1) |
| 517 |
return false; // back to single process |
| 518 |
} |
| 519 |
cow_memshare(); // else we'll be sharing memory |
| 520 |
fflush(NULL); // and forking children |
| 521 |
pid_t cpid; // create nproc children |
| 522 |
for (cnt = nproc; cnt && (cpid = fork()) != 0; cnt--) |
| 523 |
if (cpid < 0) |
| 524 |
error(SYSTEM, "fork error!"); |
| 525 |
|
| 526 |
if (cpid == 0) { // children render tiles |
| 527 |
sleep(nproc - cnt); // avoid race conditions |
| 528 |
nproc = -1; // flag as child |
| 529 |
return false; |
| 530 |
} |
| 531 |
cow_doneshare(); // parent frees memory and waits |
| 532 |
signal(SIGALRM, SIG_IGN); |
| 533 |
myRPmanager.Cleanup(true); |
| 534 |
int nfailed = 0; |
| 535 |
int status; |
| 536 |
for (cnt = nproc; cnt && wait(&status) > 0; cnt--) |
| 537 |
if (status) { |
| 538 |
sprintf(errmsg, "child exited with status %d", status); |
| 539 |
error(WARNING, errmsg); |
| 540 |
if (!nfailed++ & (cnt > 1)) { |
| 541 |
kill(0, SIGALRM); |
| 542 |
error(WARNING, "waiting for other tiles to finish..."); |
| 543 |
} |
| 544 |
} |
| 545 |
if (cnt) { |
| 546 |
sprintf(errmsg, "lost track of %d children", cnt); |
| 547 |
error(WARNING, errmsg); |
| 548 |
} |
| 549 |
if (nfailed) { |
| 550 |
sprintf(errmsg, "%d tiles were not completed", nfailed); |
| 551 |
error(USER, errmsg); |
| 552 |
} |
| 553 |
return true; // all done! |
| 554 |
} |
| 555 |
|
| 556 |
// return next renderable tile, false if everything is done |
| 557 |
static bool |
| 558 |
nexttile(int ti[2]) |
| 559 |
{ |
| 560 |
static pid_t ourpID = 0; |
| 561 |
static short * tlist = NULL; |
| 562 |
static int tlen = 0; |
| 563 |
static int tnext = 0; |
| 564 |
|
| 565 |
if (gotALRM) { // pre-empting new work? |
| 566 |
if (tlist) { |
| 567 |
sprintf(errmsg, "process %d got alarm, exiting", ourpID); |
| 568 |
CHECK(tnext<tlen, WARNING, errmsg); |
| 569 |
free(tlist); tlist = NULL; |
| 570 |
} |
| 571 |
return false; |
| 572 |
} |
| 573 |
if (!tlist) { // initialize random tile list |
| 574 |
ABitMap2 todoMap(tileGrid[0], tileGrid[1]); |
| 575 |
tlen = 0; |
| 576 |
for (ti[1] = 0; ti[1] < tileGrid[1]; ti[1]++) |
| 577 |
for (ti[0] = 0; ti[0] < tileGrid[0]; ti[0]++) |
| 578 |
if (renderable_tile(tile_p(ti))) { |
| 579 |
todoMap.Set(ti[0], ti[1]); |
| 580 |
tlen++; |
| 581 |
} |
| 582 |
if (!tlen) |
| 583 |
return false; // nothing to do! |
| 584 |
tlist = (short *)malloc(sizeof(short)*2*tlen); |
| 585 |
CHECK(!tlist, SYSTEM, "out of memory in nexttile()"); |
| 586 |
tlen = 0; // assign entries |
| 587 |
for (ti[0] = ti[1] = 0; todoMap.Find(&ti[0], &ti[1]); ti[0]++) { |
| 588 |
tlist[2*tlen] = ti[0]; |
| 589 |
tlist[2*tlen+1] = ti[1]; |
| 590 |
tlen++; |
| 591 |
} |
| 592 |
// shuffle order w/ Fisher-Yates |
| 593 |
for (int i = 0; i < tlen-1; i++) { |
| 594 |
const int ix = irandom(tlen-i) + i; |
| 595 |
ti[0] = tlist[2*i]; |
| 596 |
ti[1] = tlist[2*i+1]; |
| 597 |
tlist[2*i] = tlist[2*ix]; |
| 598 |
tlist[2*i+1] = tlist[2*ix+1]; |
| 599 |
tlist[2*ix] = ti[0]; |
| 600 |
tlist[2*ix+1] = ti[1]; |
| 601 |
} |
| 602 |
ourpID = getpid(); // save time on system calls |
| 603 |
} |
| 604 |
while (tnext < tlen) { // find first available |
| 605 |
ti[0] = tlist[2*tnext]; |
| 606 |
ti[1] = tlist[2*tnext+1]; |
| 607 |
tnext++; // take if still unclaimed |
| 608 |
if (renderable_tile(tile_p(ti))) { |
| 609 |
tile_p(ti)->status = -1; |
| 610 |
tile_p(ti)->pID = ourpID; |
| 611 |
return true; |
| 612 |
} |
| 613 |
} |
| 614 |
free(tlist); tlist = NULL; // exhausted our list? |
| 615 |
return false; |
| 616 |
} |
| 617 |
|
| 618 |
|
| 619 |
// Principal function for rpiece |
| 620 |
static RenderDataType |
| 621 |
rpiece(char *pout, RenderDataType dt, char *zout) |
| 622 |
{ |
| 623 |
if (zout && *zout == '!') |
| 624 |
error(USER, "cannot send depth to a command"); |
| 625 |
|
| 626 |
const bool newOutput = (access(pout, F_OK) < 0); |
| 627 |
FILE *pdfp[2]; |
| 628 |
if (newOutput) { // new output file? |
| 629 |
CHECK((tileGrid[0] <= 1) & (tileGrid[1] <= 1), |
| 630 |
USER, "bad tiling specification"); |
| 631 |
} else { |
| 632 |
dt = myRPmanager.ReopenOutput(pdfp, pout, zout); |
| 633 |
if (dt == RDTnone) |
| 634 |
return RDTnone; |
| 635 |
if (!fscnresolu(&hresolu, &vresolu, pdfp[0])) |
| 636 |
error(USER, "missing picture resolution"); |
| 637 |
pixaspect = .0; // need to leave this as is |
| 638 |
myRPmanager.NewHeader(pout); // get prev. header info |
| 639 |
const char * tval = myRPmanager.GetHeadStr("TILED="); |
| 640 |
if (!tval || sscanf(tval, "%d %d", &tileGrid[0], &tileGrid[1]) != 2) |
| 641 |
error(USER, "existing picture must be tiled"); |
| 642 |
CHECK(myRPmanager.GetView()==NULL, |
| 643 |
USER, "missing view in picture file"); |
| 644 |
ourview = *myRPmanager.GetView(); |
| 645 |
} |
| 646 |
int hvdim[2] = {hresolu, vresolu}; // set up tiled frame |
| 647 |
if (!myRPmanager.NewFrame(ourview, hvdim, &pixaspect, tileGrid)) |
| 648 |
error(USER, "tiling setup error in rpiece"); |
| 649 |
|
| 650 |
if ((hvdim[0] != hresolu) | (hvdim[1] != vresolu)) { |
| 651 |
if (!newOutput) |
| 652 |
error(USER, "unexpected output size adjustment"); |
| 653 |
sprintf(errmsg, "resolution adjusted from %dx%d to %dx%d", |
| 654 |
hresolu, vresolu, hvdim[0], hvdim[1]); |
| 655 |
error(WARNING, errmsg); |
| 656 |
hresolu = hvdim[0]; |
| 657 |
vresolu = hvdim[1]; |
| 658 |
} |
| 659 |
if (newOutput){ // open new output here |
| 660 |
char buf[64]; |
| 661 |
sprintf(buf, "TILED= %d %d\n", tileGrid[0], tileGrid[1]); |
| 662 |
myRPmanager.AddHeader(buf); |
| 663 |
dt = myRPmanager.NewOutput(pdfp, pout, dt, zout); |
| 664 |
if (dt == RDTnone) |
| 665 |
return RDTnone; |
| 666 |
fprtresolu(hresolu, vresolu, pdfp[0]); |
| 667 |
fflush(pdfp[0]); |
| 668 |
if (RDTdepthT(dt) == RDTdshort) { |
| 669 |
fprtresolu(hresolu, vresolu, pdfp[1]); |
| 670 |
fflush(pdfp[1]); |
| 671 |
} |
| 672 |
} else if (RDTdepthT(dt) == RDTdshort && |
| 673 |
(!fscnresolu(&hvdim[0], &hvdim[1], pdfp[1]) || |
| 674 |
(hvdim[0] != hresolu) | (hvdim[1] != vresolu))) |
| 675 |
error(USER, "mismatched depth file resolution"); |
| 676 |
// prepare (flat) pixel buffer |
| 677 |
const long pdata_beg = ftell(pdfp[0]); |
| 678 |
const size_t pixSiz = (RDTcolorT(dt)==RDTrgbe)|(RDTcolorT(dt)==RDTxyze) ? sizeof(COLR) |
| 679 |
: (RDTcolorT(dt)==RDTrgb)|(RDTcolorT(dt)==RDTxyz) ? sizeof(COLORV)*3 |
| 680 |
: RDTcolorT(dt)==RDTscolr ? LSCOLR : sizeof(COLORV)*NCSAMP; |
| 681 |
size_t pmlen = pdata_beg + pixSiz*hresolu*vresolu; |
| 682 |
// put tile progress array at end |
| 683 |
if (pmlen&7) pmlen += 8 - (pmlen&7); // 8-byte alignment to be safe |
| 684 |
pmlen += sizeof(TileProg)*tileGrid[0]*tileGrid[1]; |
| 685 |
// map picture file to memory |
| 686 |
if (newOutput && ftruncate(fileno(pdfp[0]), pmlen) < 0) |
| 687 |
error(SYSTEM, "cannot extend picture buffer"); |
| 688 |
uby8 * pixMap = (uby8 *)mmap(NULL, pmlen, PROT_READ|PROT_WRITE, |
| 689 |
MAP_SHARED, fileno(pdfp[0]), 0); |
| 690 |
if ((void *)pixMap == MAP_FAILED) |
| 691 |
error(SYSTEM, "cannot map picture file into memory"); |
| 692 |
// map depth buffer to memory |
| 693 |
const long zdata_beg = RDTdepthT(dt) ? ftell(pdfp[1]) : 0L; |
| 694 |
const size_t zdpSiz = RDTdepthT(dt)==RDTdshort ? sizeof(short) : |
| 695 |
RDTdepthT(dt)==RDTdfloat ? sizeof(float) : 0; |
| 696 |
const size_t zmlen = zdata_beg + zdpSiz*hresolu*vresolu; |
| 697 |
uby8 * zdMap = NULL; |
| 698 |
if (RDTdepthT(dt)) { |
| 699 |
if (newOutput && ftruncate(fileno(pdfp[1]), zmlen) < 0) |
| 700 |
error(SYSTEM, "cannot extend depth buffer"); |
| 701 |
zdMap = (uby8 *)mmap(NULL, zmlen, PROT_READ|PROT_WRITE, |
| 702 |
MAP_SHARED, fileno(pdfp[1]), 0); |
| 703 |
if ((void *)zdMap == MAP_FAILED) |
| 704 |
error(SYSTEM, "cannot map depth file into memory"); |
| 705 |
} |
| 706 |
fclose(pdfp[0]); // done with file pointers |
| 707 |
if (RDTdepthT(dt)) fclose(pdfp[1]); |
| 708 |
// point to tile progress array |
| 709 |
tprog = (TileProg *)(pixMap + pmlen - sizeof(TileProg)*tileGrid[0]*tileGrid[1]); |
| 710 |
|
| 711 |
if (children_finished()) // work done in children? |
| 712 |
return dt; |
| 713 |
|
| 714 |
int ndone = 0; // else render tiles |
| 715 |
int ti[2]; |
| 716 |
while (nexttile(ti)) { |
| 717 |
const int offset = (tileGrid[1]-1-ti[1])*myRPmanager.GetWidth()*myRPmanager.THeight() + |
| 718 |
(myRPmanager.THeight()-1)*myRPmanager.GetWidth() + |
| 719 |
ti[0]*myRPmanager.TWidth(); |
| 720 |
uby8 * pptr = pixMap + pdata_beg + pixSiz*offset; |
| 721 |
uby8 * zptr = zdMap + zdata_beg + zdpSiz*offset; |
| 722 |
bool ok = false; |
| 723 |
switch (RDTcommonE(dt)<<1 | (RDTdepthT(dt)==RDTdshort)) { |
| 724 |
case 2: // common-exponent color, float/no depth |
| 725 |
ok = myRPmanager.RenderTile((COLRV *)pptr, -myRPmanager.GetWidth(), |
| 726 |
(float *)zptr, ti); |
| 727 |
break; |
| 728 |
case 0: // float color, float/no depth |
| 729 |
ok = myRPmanager.RenderTile((COLORV *)pptr, -myRPmanager.GetWidth(), |
| 730 |
(float *)zptr, ti); |
| 731 |
break; |
| 732 |
case 3: // common-exponent color, encoded depth |
| 733 |
ok = myRPmanager.RenderTile((COLRV *)pptr, -myRPmanager.GetWidth(), |
| 734 |
(short *)zptr, ti); |
| 735 |
break; |
| 736 |
case 1: // float color, encoded depth |
| 737 |
ok = myRPmanager.RenderTile((COLORV *)pptr, -myRPmanager.GetWidth(), |
| 738 |
(short *)zptr, ti); |
| 739 |
break; |
| 740 |
} |
| 741 |
if (!ok) { // got an error |
| 742 |
sprintf(errmsg, "error rendering tile (%d,%d)/(%d,%d)", |
| 743 |
ti[0], ti[1], tileGrid[0], tileGrid[1]); |
| 744 |
error(USER, errmsg); |
| 745 |
} |
| 746 |
tile_p(ti)->status = 1; // mark tile completed |
| 747 |
ndone++; |
| 748 |
} |
| 749 |
if (!ndone) |
| 750 |
error(WARNING, "no tiles to render, exiting"); |
| 751 |
/* |
| 752 |
munmap(pixMap, pmlen); // technically unnecessary... |
| 753 |
if (zdMap) munmap(zdMap, zmlen); |
| 754 |
*/ |
| 755 |
return dt; // we're done here |
| 756 |
} |
