| 11 |
|
|
| 12 |
|
#include "otspecial.h" |
| 13 |
|
|
| 14 |
+ |
#include "rtotypes.h" |
| 15 |
+ |
|
| 16 |
|
#include "source.h" |
| 17 |
|
|
| 18 |
+ |
#if SHADCACHE /* preemptive shadow checking */ |
| 19 |
+ |
|
| 20 |
+ |
#ifndef MAX2SHADE |
| 21 |
+ |
#define MAX2SHADE 200 /* limit # of sources to precheck */ |
| 22 |
+ |
#endif |
| 23 |
+ |
|
| 24 |
|
#define ABS(x) ((x)>0 ? (x) : -(x)) |
| 25 |
|
|
| 26 |
|
|
| 27 |
< |
#if SHADCACHE /* preemptive shadow checking */ |
| 27 |
> |
OBJECT * antimodlist = NULL; /* set of clipped materials */ |
| 28 |
|
|
| 29 |
|
|
| 30 |
|
static int /* cast source ray to first blocker */ |
| 35 |
|
VCOPY(rt.rorg, rorg); |
| 36 |
|
VCOPY(rt.rdir, rdir); |
| 37 |
|
rt.rmax = 0; |
| 38 |
< |
rayorigin(&rt, NULL, PRIMARY, 1.0); |
| 38 |
> |
rayorigin(&rt, PRIMARY, NULL, NULL); |
| 39 |
|
/* check for intersection */ |
| 40 |
|
while (localhit(&rt, &thescene)) { |
| 41 |
|
RAY rt1 = rt; /* pretend we were aimed at source */ |
| 61 |
|
void /* initialize occlusion cache */ |
| 62 |
|
initobscache(int sn) |
| 63 |
|
{ |
| 64 |
< |
register SRCREC *srcp = &source[sn]; |
| 65 |
< |
int cachelen; |
| 66 |
< |
FVECT rorg, rdir; |
| 67 |
< |
RREAL d; |
| 68 |
< |
int i, j, k; |
| 69 |
< |
int ax, ax1, ax2; |
| 64 |
> |
SRCREC *srcp = &source[sn]; |
| 65 |
> |
int cachelen; |
| 66 |
> |
FVECT rorg, rdir; |
| 67 |
> |
RREAL d; |
| 68 |
> |
int i, j, k; |
| 69 |
> |
int ax=0, ax1=1, ax2=2; |
| 70 |
|
|
| 71 |
|
if (srcp->sflags & (SSKIP|SPROX|SSPOT|SVIRTUAL)) |
| 72 |
|
return; /* don't cache these */ |
| 114 |
|
/* clear cache */ |
| 115 |
|
for (i = cachelen; i--; ) |
| 116 |
|
srcp->obscache->obs[i] = OVOID; |
| 117 |
+ |
#if (MAX2SHADE >= 0) |
| 118 |
+ |
if (sn >= MAX2SHADE) /* limit on prechecking */ |
| 119 |
+ |
return; |
| 120 |
+ |
#endif |
| 121 |
|
/* cast shadow rays */ |
| 122 |
|
if (srcp->sflags & SDISTANT) { |
| 123 |
|
for (k = 3; k--; ) |
| 185 |
|
|
| 186 |
|
|
| 187 |
|
static OBJECT * /* return occluder cache entry */ |
| 188 |
< |
srcobstructp(register RAY *r) |
| 188 |
> |
srcobstructp(RAY *r) |
| 189 |
|
{ |
| 190 |
< |
static unsigned long lastrno = ~0; |
| 190 |
> |
static RNUMBER lastrno = ~0; |
| 191 |
|
static OBJECT noobs; |
| 192 |
|
static OBJECT *lastobjp; |
| 193 |
|
SRCREC *srcp; |
| 207 |
|
initobscache(r->rsrc); |
| 208 |
|
/* compute cache index */ |
| 209 |
|
if (srcp->sflags & SDISTANT) { |
| 210 |
< |
int ax, ax1, ax2; |
| 210 |
> |
int ax=0, ax1=1, ax2=2; |
| 211 |
|
double t; |
| 212 |
|
ax = srcp->obscache->p.d.ax; |
| 213 |
|
if ((ax1 = ax+1) >= 3) ax1 -= 3; |
| 295 |
|
|
| 296 |
|
|
| 297 |
|
int /* record a source blocker */ |
| 298 |
< |
srcblocker(register RAY *r) |
| 298 |
> |
srcblocker(RAY *r) |
| 299 |
|
{ |
| 300 |
|
OBJREC *m; |
| 301 |
|
|
| 302 |
|
if (r->robj == OVOID || objptr(r->robj) != r->ro || |
| 303 |
|
isvolume(r->ro->otype)) |
| 304 |
|
return(0); /* don't record complex blockers */ |
| 305 |
+ |
if (r->rsrc < 0 || source[r->rsrc].so == r->ro) |
| 306 |
+ |
return(0); /* just a mistake, that's all */ |
| 307 |
+ |
if (antimodlist != NULL && inset(antimodlist, r->ro->omod)) |
| 308 |
+ |
return(0); /* could be clipped */ |
| 309 |
|
m = findmaterial(r->ro); |
| 310 |
|
if (m == NULL) |
| 311 |
|
return(0); /* no material?! */ |
| 324 |
|
|
| 325 |
|
if (obs == OVOID) |
| 326 |
|
return(0); |
| 327 |
< |
op = objptr(obs); /* check for intersection */ |
| 328 |
< |
return((*ofun[op->otype].funp)(op, r)); |
| 327 |
> |
op = objptr(obs); /* check blocker intersection */ |
| 328 |
> |
if (!(*ofun[op->otype].funp)(op, r)) |
| 329 |
> |
return(0); |
| 330 |
> |
if (source[r->rsrc].sflags & SDISTANT) |
| 331 |
> |
return(1); |
| 332 |
> |
op = source[r->rsrc].so; /* check source intersection */ |
| 333 |
> |
if (!(*ofun[op->otype].funp)(op, r)) |
| 334 |
> |
return(1); |
| 335 |
> |
rayclear(r); |
| 336 |
> |
return(0); /* source in front */ |
| 337 |
> |
} |
| 338 |
> |
|
| 339 |
> |
|
| 340 |
> |
void /* record potentially clipped materials */ |
| 341 |
> |
markclip(OBJREC *m) |
| 342 |
> |
{ |
| 343 |
> |
OBJECT *set2add, *oldset; |
| 344 |
> |
|
| 345 |
> |
if (m == NULL) { /* starting over */ |
| 346 |
> |
if (antimodlist != NULL) |
| 347 |
> |
free((void *)antimodlist); |
| 348 |
> |
antimodlist = NULL; |
| 349 |
> |
return; |
| 350 |
> |
} |
| 351 |
> |
m_clip(m, NULL); /* initialize modifier list */ |
| 352 |
> |
if ((set2add = (OBJECT *)m->os) == NULL || !set2add[0]) |
| 353 |
> |
return; |
| 354 |
> |
|
| 355 |
> |
if (antimodlist == NULL) { /* start of list */ |
| 356 |
> |
antimodlist = setsave(set2add); |
| 357 |
> |
return; |
| 358 |
> |
} |
| 359 |
> |
/* else add to previous list */ |
| 360 |
> |
oldset = antimodlist; |
| 361 |
> |
antimodlist = (OBJECT *)malloc((oldset[0]+set2add[0]+1)*sizeof(OBJECT)); |
| 362 |
> |
if (antimodlist == NULL) |
| 363 |
> |
error(SYSTEM, "out of memory in markclip"); |
| 364 |
> |
setunion(antimodlist, oldset, set2add); |
| 365 |
> |
free((void *)oldset); |
| 366 |
> |
} |
| 367 |
> |
|
| 368 |
> |
|
| 369 |
> |
#else /* SHADCACHE */ |
| 370 |
> |
|
| 371 |
> |
|
| 372 |
> |
void /* no-op also avoids linker warning */ |
| 373 |
> |
markclip(OBJREC *m) |
| 374 |
> |
{ |
| 375 |
> |
(void)m; |
| 376 |
|
} |
| 377 |
|
|
| 378 |
|
|
