| 380 |
|
|
| 381 |
|
if (sflags == SDsampSpT) { |
| 382 |
|
unsc = ndp->tunsamp; |
| 383 |
< |
dfp = ndp->sd->tf; |
| 383 |
> |
if (ndp->pr->rod > 0) |
| 384 |
> |
dfp = (ndp->sd->tf != NULL) ? ndp->sd->tf : ndp->sd->tb; |
| 385 |
> |
else |
| 386 |
> |
dfp = (ndp->sd->tb != NULL) ? ndp->sd->tb : ndp->sd->tf; |
| 387 |
|
cvt_sdcolor(unsc, &ndp->sd->tLamb); |
| 388 |
|
} else /* sflags == SDsampSpR */ { |
| 389 |
|
unsc = ndp->runsamp; |
| 473 |
|
} else { |
| 474 |
|
if (m->oargs.nfargs < 6) { /* check invisible backside */ |
| 475 |
|
if (!backvis && (nd.sd->rb == NULL) & |
| 476 |
< |
(nd.sd->tf == NULL)) { |
| 476 |
> |
(nd.sd->tb == NULL)) { |
| 477 |
|
SDfreeCache(nd.sd); |
| 478 |
|
raytrans(r); |
| 479 |
|
return(1); |
| 570 |
|
flipsurface(r); |
| 571 |
|
} |
| 572 |
|
/* add direct component */ |
| 573 |
< |
if ((bright(nd.tdiff) <= FTINY) & (nd.sd->tf == NULL)) { |
| 573 |
> |
if ((bright(nd.tdiff) <= FTINY) & (nd.sd->tf == NULL) & |
| 574 |
> |
(nd.sd->tb == NULL)) { |
| 575 |
|
direct(r, dir_brdf, &nd); /* reflection only */ |
| 576 |
|
} else if (nd.thick == 0) { |
| 577 |
|
direct(r, dir_bsdf, &nd); /* thin surface scattering */ |
