93 |
|
colval(ro->cext,RED) : colval(ro->cext,GRN); |
94 |
|
if (colval(ro->cext,BLU) < re) re = colval(ro->cext,BLU); |
95 |
|
re *= ro->rot; |
96 |
< |
if (re > .1) |
97 |
< |
r->rweight *= exp(-re); |
96 |
> |
if (re > 0.1) |
97 |
> |
if (re > 92.) |
98 |
> |
r->rweight = 0.0; |
99 |
> |
else |
100 |
> |
r->rweight *= exp(-re); |
101 |
|
} |
102 |
|
rayclear(r); |
103 |
+ |
if (r->rweight <= 0.0) /* check for expiration */ |
104 |
+ |
return(-1); |
105 |
|
if (r->crtype & SHADOW) /* shadow commitment */ |
106 |
|
return(0); |
107 |
|
if (maxdepth <= 0 && rc != NULL) { /* Russian roulette */ |
373 |
|
} |
374 |
|
for (i = 3; i--; ) |
375 |
|
rc[i] *= (eext[i] <= FTINY) ? 1. : |
376 |
< |
(eext[i] > 300.) ? 0. : exp(-eext[i]); |
376 |
> |
(eext[i] > 92.) ? 0. : exp(-eext[i]); |
377 |
|
} |
378 |
|
|
379 |
|
|