From c7f3014fe92aa59b063c068f629caaffb6ed537c Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sigrid=20Solveig=20Hafl=C3=ADnud=C3=B3ttir?=
 <sigrid@ftrv.se>
Date: Tue, 2 May 2023 22:53:07 +0000
Subject: [PATCH] zoom: ignore if 0, ie if the screen is somehow TOO small to
 do any scaling

---
 src/uxnemu.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/src/uxnemu.c b/src/uxnemu.c
index c1f33b7..73a3fda 100644
--- a/src/uxnemu.c
+++ b/src/uxnemu.c
@@ -262,8 +262,10 @@ start(Uxn *u, char *rom, int queue)
 static void
 set_zoom(Uint8 z)
 {
-	zoom = z;
-	set_window_size(gWindow, (uxn_screen.width + PAD * 2) * zoom, (uxn_screen.height + PAD * 2) * zoom);
+	if (z >= 1) {
+		zoom = z;
+		set_window_size(gWindow, (uxn_screen.width + PAD * 2) * zoom, (uxn_screen.height + PAD * 2) * zoom);
+	}
 }
 
 static void