| 526 |
|
#define wrongsource(m, r) (r->rsrc>=0 && source[r->rsrc].so!=r->ro && \ |
| 527 |
|
(m->otype!=MAT_ILLUM || wrongillum(m,r))) |
| 528 |
|
|
| 529 |
– |
/* badspecular * |
| 530 |
– |
* |
| 531 |
– |
* Any undirected specular ray that hits a light source |
| 532 |
– |
* should be discarded. This is because the source contribution to |
| 533 |
– |
* specular components is calculated separately to reduce variance. |
| 534 |
– |
*/ |
| 535 |
– |
|
| 536 |
– |
#define badspecular(m, r) (r->rsrc<0 && r->crtype&SPECULAR) |
| 537 |
– |
|
| 529 |
|
/* distglow * |
| 530 |
|
* |
| 531 |
|
* A distant glow is an object that sometimes acts as a light source, |
| 535 |
|
#define distglow(m, r) (m->otype==MAT_GLOW && \ |
| 536 |
|
r->rot > m->oargs.farg[3]) |
| 537 |
|
|
| 538 |
< |
/* badambient * |
| 538 |
> |
/* badcomponent * |
| 539 |
|
* |
| 540 |
< |
* We must avoid including counting light sources in the ambient calculation, |
| 540 |
> |
* We must avoid counting light sources in the ambient calculation, |
| 541 |
|
* since the direct component is handled separately. Therefore, any |
| 542 |
|
* ambient ray which hits an active light source must be discarded. |
| 543 |
+ |
* The same is true for stray specular samples, since the specular |
| 544 |
+ |
* contribution from light sources is calculated separately. |
| 545 |
|
*/ |
| 546 |
|
|
| 547 |
< |
#define badambient(m, r) ((r->crtype&(AMBIENT|SHADOW))==AMBIENT && \ |
| 548 |
< |
!distglow(m, r)) |
| 547 |
> |
#define badcomponent(m, r) (r->crtype&(AMBIENT|SPECULAR) && \ |
| 548 |
> |
!(r->crtype&SHADOW || distglow(m, r))) |
| 549 |
|
|
| 550 |
|
/* overcount * |
| 551 |
|
* |
| 552 |
|
* All overcounting possibilities are contained here. |
| 553 |
|
*/ |
| 554 |
|
|
| 555 |
< |
#define overcount(m, r) (badspecular(m,r) || wrongsource(m,r) || \ |
| 563 |
< |
badambient(m,r)) |
| 555 |
> |
#define overcount(m, r) (badcomponent(m,r) || wrongsource(m,r)) |
| 556 |
|
|
| 557 |
|
/* passillum * |
| 558 |
|
* |
