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

Comparing ray/src/common/bsdf.c (file contents):
Revision 2.45 by greg, Wed Jul 3 18:56:19 2013 UTC vs.
Revision 2.49 by greg, Mon Dec 8 23:51:12 2014 UTC

#	Line 558 | 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 */
562	<	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 618 | 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 763 | Line 763 | SDsampBSDF(SDValue *sv, FVECT ioVec, double randX, int
763		cdarr[i] = (*rdf->comp[i].func->getCDist)(inVec, &rdf->comp[i]);
764		if (cdarr[i] == NULL)
765		cdarr[i] = &SDemptyCD;
766	<	else
767	<	sv->cieY += cdarr[i]->cTotal;
766	>	sv->cieY += cdarr[i]->cTotal;
767		}
768		if (sv->cieY <= 1e-6) {         /* anything to sample? */
769		sv->cieY = .0;
#	Line 789 | 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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