--- ray/src/hd/rhpict.c	1999/03/05 17:02:41	3.2
+++ ray/src/hd/rhpict.c	1999/03/09 15:10:26	3.7
@@ -14,10 +14,13 @@ static char SCCSid[] = "$SunId$ SGI";
 
 char	*progname;		/* our program name */
 char	*hdkfile;		/* holodeck file name */
+char	gargc;			/* global argc */
+char	**gargv;		/* global argv */
 
 VIEW	myview = STDVIEW;	/* current output view */
 int	xres = 512, yres = 512;	/* max. horizontal and vertical resolution */
 char	*outspec = NULL;	/* output file specification */
+double	randfrac = -1.;		/* random resampling fraction */
 double	pixaspect = 1.;		/* pixel aspect ratio */
 int	seqstart = 0;		/* sequence start frame */
 double	expval = 1.;		/* exposure value */
@@ -36,6 +39,7 @@ char	*argv[];
 {
 	int	i, rval;
 
+	gargc = argc; gargv = argv;
 	progname = argv[0];			/* get arguments */
 	for (i = 1; i < argc && argv[i][0] == '-'; i++) {
 		rval = getviewopt(&myview, argc-i, argv+i);
@@ -50,9 +54,9 @@ char	*argv[];
 		case 'p':			/* pixel aspect/exposure */
 			if (badarg(argc-i-1,argv+i+1,"f"))
 				goto userr;
-			if (argv[i][1] == 'a')
+			if (argv[i][2] == 'a')
 				pixaspect = atof(argv[++i]);
-			else if (argv[i][1] == 'e') {
+			else if (argv[i][2] == 'e') {
 				expval = atof(argv[++i]);
 				if (argv[i][0] == '-' | argv[i][0] == '+')
 					expval = pow(2., expval);
@@ -74,13 +78,21 @@ char	*argv[];
 				goto userr;
 			outspec = argv[++i];
 			break;
+		case 'r':			/* random sampling */
+			if (badarg(argc-i-1,argv+i+1,"f"))
+				goto userr;
+			randfrac = atof(argv[++i]);
+			break;
+		case 's':			/* smooth sampling */
+			randfrac = -1.;
+			break;
 		case 'S':			/* sequence start */
 			if (badarg(argc-i-1,argv+i+1,"i"))
 				goto userr;
 			seqstart = atoi(argv[++i]);
 			break;
 		case 'v':			/* view file */
-			if (argv[i][1]!='f' || badarg(argc-i-1,argv+i+1,"s"))
+			if (argv[i][2]!='f' || badarg(argc-i-1,argv+i+1,"s"))
 				goto userr;
 			rval = viewfile(argv[++i], &myview, NULL);
 			if (rval < 0) {
@@ -98,9 +110,9 @@ char	*argv[];
 		}
 	}
 						/* open holodeck file */
-	if (i >= argc)
+	if (i != argc-1)
 		goto userr;
-	hdkfile = argv[i++];
+	hdkfile = argv[i];
 	initialize();
 						/* render picture(s) */
 	if (seqstart <= 0)
@@ -111,7 +123,7 @@ char	*argv[];
 	quit(0);				/* all done! */
 userr:
 	fprintf(stderr,
-"Usage: %s [-w][-pa pa][-pe ex][-x hr][-y vr][-S stfn][-o outp][view] input.hdk\n",
+"Usage: %s [-w][-r rf][-pa pa][-pe ex][-x hr][-y vr][-S stfn][-o outp][view] input.hdk\n",
 			progname);
 	quit(1);
 }
@@ -145,11 +157,13 @@ int	fn;
 		sprintf(errmsg, "error writing frame %d", fn);
 		error(SYSTEM, errmsg);
 	}
+#ifdef DEBUG
 	if (blist.nb > 0 & rval > 0) {
-		sprintf(errmsg, "%.1f%% unrendered pixels in frame %d",
-				100.*rval/(hres*vres), fn);
+		sprintf(errmsg, "%d unrendered pixels in frame %d (%.1f%%)",
+				rval, fn, 100.*rval/(hres*vres));
 		error(WARNING, errmsg);
 	}
+#endif
 }
 
 
@@ -169,7 +183,7 @@ int	nb;
 		bil[i].b = bl[i].bi;
 	}
 	hdloadbeams(bil, nb, pixBeam);
-	pixFlush();
+	pixFinish(randfrac);
 	free((char *)bil);
 }
 
@@ -194,7 +208,7 @@ int	fn;
 				/* write header */
 	newheader("RADIANCE", stdout);
 	printf("SOFTWARE= %s\n", VersionID);
-	printf("%s %s\n", progname, hdkfile);
+	printargs(gargc, gargv, stdout);
 	if (fn)
 		printf("FRAME=%d\n", fn);
 	fputs(VIEWSTR, stdout);
@@ -218,22 +232,29 @@ int	fn;
 int
 endpicture()			/* finish and write out pixels */
 {
-	int	nunrend = 0;
-	int	v;
+	int	lastr = -1, nunrend = 0;
+	int4	lastp, lastrp;
+	register int4	p;
 	register double	d;
-	register int	p;
 				/* compute final pixel values */
 	for (p = hres*vres; p--; ) {
 		if (myweight[p] <= FTINY) {
+			if (lastr >= 0)
+				if (p/hres == lastp/hres)
+					copycolor(mypixel[p], mypixel[lastp]);
+				else
+					copycolor(mypixel[p], mypixel[lastrp]);
 			nunrend++;
 			continue;
 		}
 		d = expval/myweight[p];
 		scalecolor(mypixel[p], d);
+		if ((lastp=p)/hres != lastr)
+			lastr = (lastrp=p)/hres;
 	}
 				/* write each scanline */
-	for (v = vres; v--; )
-		if (fwritescan(mypixel+v*hres, hres, stdout) < 0)
+	for (p = vres; p--; )
+		if (fwritescan(mypixel+p*hres, hres, stdout) < 0)
 			return(-1);
 	if (fflush(stdout) == EOF)
 		return(-1);