shithub: riscv

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vncv: do flushimage() under display lock, zero ypdate rect

--- a/sys/src/cmd/vnc/draw.c

+++ b/sys/src/cmd/vnc/draw.c

@@ -63,6 +63,7 @@

 	int x, y;

 	lockdisplay(display);

+	flushimage(display, 1);

 	x = Dx(screen->r);

 	y = Dy(screen->r);

 	unlockdisplay(display);

@@ -236,8 +237,6 @@

 	Rectangle r, subr, maxr;

 	r = vncrdrect(v);

-	if(r.min.x == r.max.x || r.min.y == r.max.y)

-		return;

 	if(!rectinrect(r, Rpt(ZP, v->dim)))

 		sysfatal("bad rectangle from server: %R not in %R", r, Rpt(ZP, v->dim));

 	stride = Dx(r) * pixb;

@@ -364,7 +363,6 @@

 			n = vncrdshort(v);

 			while(n-- > 0)

 				dorectangle(v);

-			flushimage(display, 1);

 			requestupdate(v, 1);

 			break;