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root/Development/ray/src/common/bsdf.c

Comparing ray/src/common/bsdf.c (file contents):
Revision 2.44 by greg, Sun Apr 21 21:36:23 2013 UTC vs.
Revision 2.49 by greg, Mon Dec 8 23:51:12 2014 UTC

#	Line 488 | Line 488 | SDsampComponent(SDValue *sv, FVECT ioVec, double randX
488		return SDEargument;
489		/* get cumulative distribution */
490		VCOPY(inVec, ioVec);
491	+	sv->cieY = 0;
492		cd = (*sdc->func->getCDist)(inVec, sdc);
493	<	if (cd == NULL)
494	<	return SDEmemory;
495	<	if (cd->cTotal <= 1e-6) {       /* anything to sample? */
493	>	if (cd != NULL)
494	>	sv->cieY = cd->cTotal;
495	>	if (sv->cieY <= 1e-6) {         /* nothing to sample? */
496		sv->spec = c_dfcolor;
496	–	sv->cieY = .0;
497		memset(ioVec, 0, 3*sizeof(double));
498		return SDEnone;
499		}
500	–	sv->cieY = cd->cTotal;
500		/* compute sample direction */
501		ec = (*sdc->func->sampCDist)(ioVec, randX, cd);
502		if (ec)
#	Line 559 | Line 558 | SDdiffuseSamp(FVECT outVec, int outFront, double randX
558		SDmultiSamp(outVec, 2, randX);
559		SDsquare2disk(outVec, outVec[0], outVec[1]);
560		outVec[2] = 1. - outVec[0]*outVec[0] - outVec[1]*outVec[1];
561	<	if (outVec[2] > 0)              /* a bit of paranoia */
563	<	outVec[2] = sqrt(outVec[2]);
561	>	outVec[2] = sqrt(outVec[2]*(outVec[2]>0));
562		if (!outFront)                  /* going out back? */
563		outVec[2] = -outVec[2];
564		}
#	Line 619 | Line 617 | SDsizeBSDF(double *projSA, const FVECT v1, const RREAL
617		projSA[0] = M_PI;
618		if (qflags == SDqueryMin+SDqueryMax)
619		projSA[1] = M_PI;
620	<	}
620	>	} else if (qflags == SDqueryMin+SDqueryMax && projSA[0] > projSA[1])
621	>	projSA[0] = projSA[1];
622		return SDEnone;
623		}
624
#	Line 756 | Line 755 | SDsampBSDF(SDValue *sv, FVECT ioVec, double randX, int
755		return SDEmemory;
756		while (j-- > 0) {               /* non-diffuse transmission */
757		cdarr[i+j] = (*tdf->comp[j].func->getCDist)(inVec, &tdf->comp[j]);
758	<	if (cdarr[i+j] == NULL) {
759	<	free(cdarr);
761	<	return SDEmemory;
762	<	}
758	>	if (cdarr[i+j] == NULL)
759	>	cdarr[i+j] = &SDemptyCD;
760		sv->cieY += cdarr[i+j]->cTotal;
761		}
762		while (i-- > 0) {               /* non-diffuse reflection */
763		cdarr[i] = (*rdf->comp[i].func->getCDist)(inVec, &rdf->comp[i]);
764	<	if (cdarr[i] == NULL) {
765	<	free(cdarr);
769	<	return SDEmemory;
770	<	}
764	>	if (cdarr[i] == NULL)
765	>	cdarr[i] = &SDemptyCD;
766		sv->cieY += cdarr[i]->cTotal;
767		}
768		if (sv->cieY <= 1e-6) {         /* anything to sample? */
#	Line 793 | Line 788 | SDsampBSDF(SDValue *sv, FVECT ioVec, double randX, int
788		randX -= sd->tLamb.cieY;
789		}
790		/* else one of cumulative dist. */
791	<	for (i = 0; i < n && randX < cdarr[i]->cTotal; i++)
791	>	for (i = 0; i < n && randX > cdarr[i]->cTotal; i++)
792		randX -= cdarr[i]->cTotal;
793		if (i >= n)
794		return SDEinternal;

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