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root/radiance/src/rt/raytrace.c

Comparing src/rt/raytrace.c (file contents):
Revision 2.52 by greg, Tue Jun 21 15:06:50 2005 UTC vs.
Revision 2.53 by greg, Thu Jun 23 09:11:38 2005 UTC

#	Line 93 | Line 93 | rayorigin(             /* start new ray from old one */
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 */
#	Line 368 | Line 373 | raycontrib(            /* compute (cumulative) ray contribution
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

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