From 5cc8d8476bd385771f8f9826aa2c59fb12e00fff Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 18 Apr 2021 23:02:29 +0900
Subject: [PATCH] ebiten: Bug fix: Ignore the outside size when they are 0 at
 Layout

Closes #1589
---
 uicontext.go | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/uicontext.go b/uicontext.go
index b37351043..388a6479c 100644
--- a/uicontext.go
+++ b/uicontext.go
@@ -56,6 +56,11 @@ func (c *uiContext) setError(err error) {
 }
 
 func (c *uiContext) Layout(outsideWidth, outsideHeight float64) {
+	// The given outside size can be 0 e.g. just after restoring from the fullscreen mode on Windows (#1589)
+	// Just ignore such cases. Otherwise, creating a zero-sized framebuffer causes a panic.
+	if outsideWidth == 0 || outsideHeight == 0 {
+		return
+	}
 	c.outsideSizeUpdated = true
 	c.outsideWidth = outsideWidth
 	c.outsideHeight = outsideHeight