--- ray/src/px/x11image.c	1990/10/17 14:56:18	1.9
+++ ray/src/px/x11image.c	1991/03/18 09:35:06	1.13
@@ -240,7 +240,8 @@ init()			/* get data and open window */
 	if (geometry != NULL) {
 		bzero((char *)&oursizhints, sizeof(oursizhints));
 		i = XParseGeometry(geometry, &oursizhints.x, &oursizhints.y,
-				&oursizhints.width, &oursizhints.height);
+				(unsigned *)&oursizhints.width,
+				(unsigned *)&oursizhints.height);
 		if ((i&(WidthValue|HeightValue)) == (WidthValue|HeightValue))
 			oursizhints.flags |= USSize;
 		else {
@@ -410,7 +411,7 @@ XKeyPressedEvent  *ekey;
 			sprintf(buf, "%.3f", intens(cval)/exposure);
 			break;
 		case 'l':				/* luminance */
-			sprintf(buf, "%.0fn", bright(cval)*683.0/exposure);
+			sprintf(buf, "%.0fn", luminance(cval)/exposure);
 			break;
 		case 'c':				/* color */
 			comp = pow(2.0, (double)scale);
@@ -604,20 +605,20 @@ getmono()			/* get monochrome data */
 	register unsigned char	*dp;
 	register int	x, err;
 	int	y;
-	rgbpixel	*inl;
 	short	*cerr;
 
-	if ((inl = (rgbpixel *)malloc(xmax*sizeof(rgbpixel))) == NULL
-			|| (cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
+	if ((cerr = (short *)calloc(xmax,sizeof(short))) == NULL)
 		quiterr("out of memory in getmono");
 	dp = ourdata - 1;
 	for (y = 0; y < ymax; y++) {
-		picreadline3(y, inl);
+		if (getscan(y) < 0)
+			quiterr("seek error in getmono");
+		normcolrs(scanline, xmax, scale);
 		err = 0;
 		for (x = 0; x < xmax; x++) {
 			if (!(x&7))
 				*++dp = 0;
-			err += rgb_bright(&inl[x]) + cerr[x];
+			err += normbright(scanline[x]) + cerr[x];
 			if (err > 127)
 				err -= 255;
 			else
@@ -625,7 +626,6 @@ getmono()			/* get monochrome data */
 			cerr[x] = err >>= 1;
 		}
 	}
-	free((char *)inl);
 	free((char *)cerr);
 }
 
@@ -633,9 +633,24 @@ getmono()			/* get monochrome data */
 getfull()			/* get full (24-bit) data */
 {
 	int	y;
-
-	for (y = 0; y < ymax; y++)
-		picreadline3(y, (rgbpixel *)(ourdata+y*xmax*3));
+	register unsigned char	*dp;
+	register int	x;
+					/* set gamma correction */
+	setcolrgam(gamcor);
+					/* read and convert file */
+	dp = ourdata;
+	for (y = 0; y < ymax; y++) {
+		if (getscan(y) < 0)
+			quiterr("seek error in getfull");
+		if (scale)
+			shiftcolrs(scanline, xmax, scale);
+		colrs_gambs(scanline, xmax);
+		for (x = 0; x < xmax; x++) {
+			*dp++ = scanline[x][RED];
+			*dp++ = scanline[x][GRN];
+			*dp++ = scanline[x][BLU];
+		}
+	}
 }
 
 
@@ -720,7 +735,7 @@ colormap  map;
 	register int  i, val;
 
 	for (i = 0; i < 256; i++) {
-		val = pow(i/256.0, 1.0/gamcor) * 256.0;
+		val = pow((i+0.5)/256.0, 1.0/gamcor) * 256.0;
 		map[0][i] = map[1][i] = map[2][i] = val;
 	}
 }