From 8e2634eb132e92745902c7fe0fc833b758f8f0d9 Mon Sep 17 00:00:00 2001
From: Sam Lantinga <slouken@libsdl.org>
Date: Fri, 14 Oct 2016 00:51:57 -0700
Subject: [PATCH] Fixed divide by zero if setting integer scale without setting
 logical width and height

---
 src/render/SDL_render.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/src/render/SDL_render.c b/src/render/SDL_render.c
index c4601edff..94750810d 100644
--- a/src/render/SDL_render.c
+++ b/src/render/SDL_render.c
@@ -1145,6 +1145,9 @@ UpdateLogicalSize(SDL_Renderer *renderer)
     float scale;
     SDL_Rect viewport;
 
+    if (!renderer->logical_w || !renderer->logical_h) {
+        return 0;
+    }
     if (SDL_GetRendererOutputSize(renderer, &w, &h) < 0) {
         return -1;
     }