| 16 |
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#include "random.h" |
| 17 |
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|
| 18 |
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#ifndef WFLUSH |
| 19 |
< |
#define WFLUSH 64 /* flush after this many rays */ |
| 19 |
> |
#define WFLUSH 64 /* flush after this many primary rays */ |
| 20 |
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#endif |
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+ |
#ifndef WFLUSH1 |
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+ |
#define WFLUSH1 512 /* or this many total rays */ |
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+ |
#endif |
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|
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+ |
|
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#ifdef SMLFLT |
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#define sscanvec(s,v) (sscanf(s,"%f %f %f",v,v+1,v+2)==3) |
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#else |
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#define sscanvec(s,v) (sscanf(s,"%lf %lf %lf",v,v+1,v+2)==3) |
| 30 |
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#endif |
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|
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+ |
static RNUMBER niflush; /* flushes since newimage() */ |
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|
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int |
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getrect( /* get a box */ |
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return(gcol); |
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} |
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|
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+ |
static void |
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+ |
recolor( /* recolor the given node */ |
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+ |
PNODE *p |
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+ |
) |
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+ |
{ |
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+ |
while (p->kid != NULL) { /* need to propogate down */ |
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+ |
int mx = (p->xmin + p->xmax) >> 1; |
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+ |
int my = (p->ymin + p->ymax) >> 1; |
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+ |
int ki; |
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+ |
if (p->x >= mx) |
| 163 |
+ |
ki = (p->y >= my) ? UR : DR; |
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+ |
else |
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+ |
ki = (p->y >= my) ? UL : DL; |
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+ |
pcopy(p, p->kid+ki); |
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+ |
p = p->kid + ki; |
| 168 |
+ |
} |
| 169 |
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|
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+ |
(*dev->paintr)(greyscale?greyof(p->v):p->v, |
| 171 |
+ |
p->xmin, p->ymin, p->xmax, p->ymax); |
| 172 |
+ |
} |
| 173 |
+ |
|
| 174 |
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int |
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paint( /* compute and paint a rectangle */ |
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PNODE *p |
| 177 |
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) |
| 178 |
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{ |
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– |
extern int ray_pnprocs; |
| 155 |
– |
static unsigned long lastflush = 0; |
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static RAY thisray; |
| 180 |
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double h, v; |
| 181 |
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|
| 182 |
< |
if (p->xmax - p->xmin <= 0 || p->ymax - p->ymin <= 0) { /* empty */ |
| 182 |
> |
if ((p->xmax <= p->xmin) | (p->ymax <= p->ymin)) { /* empty */ |
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p->x = p->xmin; |
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p->y = p->ymin; |
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setcolor(p->v, 0.0, 0.0, 0.0); |
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if ((thisray.rmax = viewray(thisray.rorg, thisray.rdir, &ourview, |
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h/hresolu, v/vresolu)) < -FTINY) { |
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setcolor(thisray.rcol, 0.0, 0.0, 0.0); |
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< |
} else { |
| 196 |
< |
int rval; |
| 195 |
> |
} else if (nproc == 1 || newparam) { /* immediate mode */ |
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> |
ray_trace(&thisray); |
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> |
} else { /* queuing mode */ |
| 198 |
> |
int rval; |
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|
rayorigin(&thisray, PRIMARY, NULL, NULL); |
| 200 |
< |
thisray.rno = (unsigned long)p; |
| 200 |
> |
thisray.rno = (RNUMBER)p; |
| 201 |
|
rval = ray_pqueue(&thisray); |
| 202 |
|
if (!rval) |
| 203 |
|
return(0); |
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|
if (rval < 0) |
| 205 |
|
return(-1); |
| 206 |
+ |
/* get node for returned ray */ |
| 207 |
|
p = (PNODE *)thisray.rno; |
| 208 |
|
} |
| 209 |
|
|
| 210 |
|
copycolor(p->v, thisray.rcol); |
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|
scalecolor(p->v, exposure); |
| 212 |
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|
| 213 |
< |
(*dev->paintr)(greyscale?greyof(p->v):p->v, p->xmin, p->ymin, p->xmax, p->ymax); |
| 213 |
> |
recolor(p); /* paint it */ |
| 214 |
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|
| 215 |
< |
if (dev->flush != NULL && raynum - lastflush >= WFLUSH*ray_pnprocs) { |
| 216 |
< |
lastflush = raynum; |
| 217 |
< |
(*dev->flush)(); |
| 215 |
> |
if (dev->flush != NULL) { /* shall we check for input? */ |
| 216 |
> |
static RNUMBER lastflush = 0; |
| 217 |
> |
RNUMBER counter = raynum; |
| 218 |
> |
int flushintvl; |
| 219 |
> |
if (nproc == 1) { |
| 220 |
> |
counter = nrays; |
| 221 |
> |
flushintvl = WFLUSH1; |
| 222 |
> |
} else if (ambounce == 0) |
| 223 |
> |
flushintvl = nproc*WFLUSH; |
| 224 |
> |
else if (niflush < WFLUSH) |
| 225 |
> |
flushintvl = nproc*niflush/(ambounce+1); |
| 226 |
> |
else |
| 227 |
> |
flushintvl = nproc*WFLUSH/(ambounce+1); |
| 228 |
> |
if (lastflush > counter) |
| 229 |
> |
lastflush = 0; /* counter wrapped */ |
| 230 |
> |
|
| 231 |
> |
if (counter - lastflush >= flushintvl) { |
| 232 |
> |
lastflush = counter; |
| 233 |
> |
(*dev->flush)(); |
| 234 |
> |
niflush++; |
| 235 |
> |
} |
| 236 |
|
} |
| 237 |
|
return(1); |
| 238 |
|
} |
| 239 |
|
|
| 240 |
|
|
| 241 |
|
int |
| 242 |
< |
waitrays(void) /* finish up pending rays */ |
| 242 |
> |
waitrays(void) /* finish up pending rays */ |
| 243 |
|
{ |
| 244 |
|
int nwaited = 0; |
| 245 |
|
int rval; |
| 246 |
|
RAY raydone; |
| 247 |
< |
|
| 247 |
> |
|
| 248 |
> |
if (nproc <= 1) /* immediate mode? */ |
| 249 |
> |
return(0); |
| 250 |
|
while ((rval = ray_presult(&raydone, 0)) > 0) { |
| 251 |
|
PNODE *p = (PNODE *)raydone.rno; |
| 252 |
|
copycolor(p->v, raydone.rcol); |
| 253 |
|
scalecolor(p->v, exposure); |
| 254 |
< |
(*dev->paintr)(greyscale?greyof(p->v):p->v, |
| 209 |
< |
p->xmin, p->ymin, p->xmax, p->ymax); |
| 254 |
> |
recolor(p); |
| 255 |
|
nwaited++; |
| 256 |
|
} |
| 257 |
|
if (rval < 0) |
| 265 |
|
char *s |
| 266 |
|
) |
| 267 |
|
{ |
| 268 |
< |
int newnp; |
| 269 |
< |
/* change in nproc? */ |
| 270 |
< |
if (s != NULL && sscanf(s, "%d", &newnp) == 1 && newnp > 0) { |
| 271 |
< |
if (!newparam) { |
| 272 |
< |
if (newnp < nproc) |
| 228 |
< |
ray_pclose(nproc - newnp); |
| 229 |
< |
else |
| 230 |
< |
ray_popen(newnp - nproc); |
| 231 |
< |
} |
| 232 |
< |
nproc = newnp; |
| 233 |
< |
} |
| 268 |
> |
extern int ray_pnprocs; |
| 269 |
> |
int newnp = 0; |
| 270 |
> |
/* # rendering procs arg? */ |
| 271 |
> |
if (s != NULL) |
| 272 |
> |
sscanf(s, "%d", &newnp); |
| 273 |
|
/* free old image */ |
| 274 |
|
freepkids(&ptrunk); |
| 275 |
|
/* compute resolution */ |
| 284 |
|
(*dev->clear)(hresolu, vresolu); |
| 285 |
|
|
| 286 |
|
if (newparam) { /* (re)start rendering procs */ |
| 287 |
< |
ray_pclose(0); |
| 288 |
< |
ray_popen(nproc); |
| 287 |
> |
if (ray_pnprocs > 0) |
| 288 |
> |
ray_pclose(0); |
| 289 |
> |
if (newnp > 0) |
| 290 |
> |
nproc = newnp; |
| 291 |
> |
if (nproc > 1) |
| 292 |
> |
ray_popen(nproc); |
| 293 |
|
newparam = 0; |
| 294 |
+ |
} else if ((newnp > 0) & (newnp != nproc)) { |
| 295 |
+ |
if (newnp == 1) /* change # rendering procs */ |
| 296 |
+ |
ray_pclose(0); |
| 297 |
+ |
else if (newnp < ray_pnprocs) |
| 298 |
+ |
ray_pclose(ray_pnprocs - newnp); |
| 299 |
+ |
else |
| 300 |
+ |
ray_popen(newnp - ray_pnprocs); |
| 301 |
+ |
nproc = newnp; |
| 302 |
|
} |
| 303 |
< |
/* get first value */ |
| 303 |
> |
niflush = 0; /* get first value */ |
| 304 |
|
paint(&ptrunk); |
| 305 |
|
} |
| 306 |
|
|
| 395 |
|
} |
| 396 |
|
} |
| 397 |
|
return(p); |
| 398 |
+ |
} |
| 399 |
+ |
|
| 400 |
+ |
|
| 401 |
+ |
void |
| 402 |
+ |
compavg( /* recompute averages */ |
| 403 |
+ |
PNODE *p |
| 404 |
+ |
) |
| 405 |
+ |
{ |
| 406 |
+ |
int i, navg; |
| 407 |
+ |
|
| 408 |
+ |
if (p->kid == NULL) |
| 409 |
+ |
return; |
| 410 |
+ |
|
| 411 |
+ |
setcolor(p->v, .0, .0, .0); |
| 412 |
+ |
navg = 0; |
| 413 |
+ |
for (i = 0; i < 4; i++) { |
| 414 |
+ |
if (p->kid[i].xmin >= p->kid[i].xmax) continue; |
| 415 |
+ |
if (p->kid[i].ymin >= p->kid[i].ymax) continue; |
| 416 |
+ |
compavg(p->kid+i); |
| 417 |
+ |
addcolor(p->v, p->kid[i].v); |
| 418 |
+ |
navg++; |
| 419 |
+ |
} |
| 420 |
+ |
if (navg > 1) |
| 421 |
+ |
scalecolor(p->v, 1./navg); |
| 422 |
|
} |
| 423 |
|
|
| 424 |
|
|
