Trying to tackle issue with undrawn region on screen

projects/examples/demos/dvd.tal

@@ -2,6 +2,7 @@
 
 |00 @System &vector $2 &wst $1 &rst $1 &eaddr $2 &ecode $1 &pad $1 &r $2 &g $2 &b $2 &debug $1 &halt $1
 |20 @Screen &vector $2 &width $2 &height $2 &auto $1 &pad $1 &x $2 &y $2 &addr $2 &pixel $1 &sprite $1
+
 |000
 
 	@dvd &x $2 &y $2
@@ -39,7 +40,7 @@
 	( top ) ORAk ?{
 		[ LIT2 ADD2 _&y ] STR }
 	( bottom ) DUP2 [ LIT2 &hit-ver $2 ] NEQ2 ?{
-		[ LIT2 ADD2 _&y ] STR }
+		[ LIT2 SUB2 _&y ] STR }
 	#0001 [ &y ADD2 ] .dvd/y STZ2
 	#01 <draw-dvd>
 	BRK

src/uxnemu.c

@@ -147,6 +147,7 @@ set_window_size(SDL_Window *window, int w, int h)
 	if(w == win_old.x && h == win_old.y) return;
 	SDL_RenderClear(emu_renderer);
 	SDL_SetWindowSize(window, w, h);
+	screen_resize(uxn_screen.width, uxn_screen.height, 1);
 }
 
 static void
@@ -430,10 +431,10 @@ emu_run(char *rom)
 			now = SDL_GetPerformanceCounter();
 			next_refresh = now + frame_interval;
 			uxn_eval(screen_vector);
-			if(uxn_screen.x2)
+			if(screen_changed())
 				emu_redraw();
 		}
-		if(screen_vector || uxn_screen.x2) {
+		if(screen_vector) {
 			Uint64 delay_ms = (next_refresh - now) / ms_interval;
 			if(delay_ms > 0) SDL_Delay(delay_ms);
 		} else