From 6718cd32a6244593ec7da295a86af0b2288dee89 Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Wed, 19 Aug 2020 21:15:47 +0900
Subject: [PATCH] examples/contextlost: Skip Draw when the context lost happens

Updates #1314
---
 examples/contextlost/main.go | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/examples/contextlost/main.go b/examples/contextlost/main.go
index e8b799542..34d191b13 100644
--- a/examples/contextlost/main.go
+++ b/examples/contextlost/main.go
@@ -102,6 +102,13 @@ func (g *Game) Update(screen *ebiten.Image) error {
 }
 
 func (g *Game) Draw(screen *ebiten.Image) {
+	if g.lost {
+		// When the context is lost, skip rendering. Usually this logic should not be required, but when the
+		// context lost happens by the API explicitly, Draw can be called even after the data in GPU is
+		// disappered.
+		return
+	}
+
 	w, h := gophersImage.Size()
 	op := &ebiten.DrawImageOptions{}