From 127abbea770e1fff660b0ffd10ab58bcb46bf0af Mon Sep 17 00:00:00 2001
From: mamg22 <45301823+mamg22@users.noreply.github.com>
Date: Tue, 30 Nov 2021 19:52:09 -0400
Subject: [PATCH] fix crash when zooming out on small images (#178)

When rendering images, destination image width and height may become
zero due to float-to-int conversion after zoom calculation, later
crashing when creating an image using those dimensions. This sets
a minimum of 1 to both variables.

Closes #82
---
 image.c | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/image.c b/image.c
index eaa35da..268163b 100644
--- a/image.c
+++ b/image.c
@@ -602,7 +602,7 @@ void img_render(img_t *img)
 		sx = 0;
 		sw = img->w;
 		dx = img->x;
-		dw = img->w * img->zoom;
+		dw = MAX(img->w * img->zoom, 1);
 	}
 	if (img->y <= 0) {
 		sy = -img->y / img->zoom + 0.5;
@@ -613,7 +613,7 @@ void img_render(img_t *img)
 		sy = 0;
 		sh = img->h;
 		dy = img->y;
-		dh = img->h * img->zoom;
+		dh = MAX(img->h * img->zoom, 1);
 	}
 
 	win_clear(win);