From e22561c292f66f45faf03d6e11b970bedbe48a9a Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 4 Sep 2016 02:25:10 +0900
Subject: [PATCH] restorable: Bug fix: volatile images are not relaiable when
 restoring

---
 imageimpl.go | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/imageimpl.go b/imageimpl.go
index c1894819a..de4a6d4f4 100644
--- a/imageimpl.go
+++ b/imageimpl.go
@@ -163,7 +163,7 @@ func (i *imageImpl) DrawImage(image *Image, options *DrawImageOptions) error {
 	geom := options.GeoM
 	colorm := options.ColorM
 	mode := opengl.CompositeMode(options.CompositeMode)
-	if image.impl.pixels.IsStale() {
+	if image.impl.pixels.IsStale() || image.impl.volatile {
 		i.pixels.MakeStale()
 	} else {
 		i.pixels.AppendDrawImageHistory(image.impl.image, vertices, &geom, &colorm, mode)