--- ray/src/hd/rhd_glx.c	1997/12/26 14:12:37	3.4
+++ ray/src/hd/rhd_glx.c	1997/12/30 16:59:46	3.9
@@ -100,6 +100,7 @@ char  *id;
 	XSizeHints	oursizhints;
 					/* set quadtree globals */
 	qtMinNodesiz = 3;
+	qtDepthEps = 0.07;
 					/* open display server */
 	ourdisplay = XOpenDisplay(NULL);
 	if (ourdisplay == NULL)
@@ -161,9 +162,8 @@ char  *id;
 					/* map the window */
 	XMapWindow(ourdisplay, gwind);
 	dev_input();			/* sets size and view angles */
-	glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 					/* allocate our leaf pile */
-	if (!qtAllocLeaves(2 * DisplayWidth(ourdisplay,ourscreen) *
+	if (!qtAllocLeaves(DisplayWidth(ourdisplay,ourscreen) *
 			DisplayHeight(ourdisplay,ourscreen) /
 			(qtMinNodesiz*qtMinNodesiz)))
 		error(SYSTEM, "insufficient memory for value storage");
@@ -284,7 +284,7 @@ double	rad;
 		else
 			apexh = 1. - ip[2]/(curzmax*DEPTHFACT);
 	}
-					/* find closest cone match */
+	rad *= 1.25;			/* find conservative cone match */
 	for (ci = 0; ci < MAXCONE-1; ci++)
 		if (cone[ci].rad >= rad)
 			break;
@@ -567,12 +567,20 @@ register XKeyPressedEvent  *ekey;
 		inpresflags |= DFL(DC_RESUME);
 		return;
 	case CTRL('R'):			/* redraw screen */
+		if (nxtzmax > FTINY) {
+			curzmax = nxtzmax;
+			nxtzmax = 0.;
+		}
 		glClear(GL_DEPTH_BUFFER_BIT);
 		qtRedraw(0, 0, odev.hres, odev.vres);
 		return;
 	case CTRL('L'):			/* refresh from server */
 		if (inpresflags & DFL(DC_REDRAW))
 			return;
+		if (nxtzmax > FTINY) {
+			curzmax = nxtzmax;
+			nxtzmax = 0.;
+		}
 		glClear(GL_COLOR_BUFFER_BIT | GL_DEPTH_BUFFER_BIT);
 		draw_grids();
 		glFlush();
@@ -627,6 +635,8 @@ static
 resizewindow(ersz)			/* resize window */
 register XConfigureEvent  *ersz;
 {
+	glViewport(0, 0, ersz->width, ersz->height);
+
 	if (ersz->width == odev.hres && ersz->height == odev.vres)
 		return;
 
@@ -635,8 +645,6 @@ register XConfigureEvent  *ersz;
 
 	odev.v.horiz = 2.*180./PI * atan(0.5/VIEWDIST*pwidth*odev.hres);
 	odev.v.vert = 2.*180./PI * atan(0.5/VIEWDIST*pheight*odev.vres);
-
-	glViewport(0, 0, odev.hres, odev.vres);
 
 	inpresflags |= DFL(DC_SETVIEW);
 }