From 913824bebad87656b8a8c879d82f5f0bd28e8a2f Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Thu, 19 Oct 2023 12:14:54 +0900
Subject: [PATCH] internal/atlas: close channels on the sender side just in
 case

---
 internal/atlas/image.go | 10 ++++++++--
 1 file changed, 8 insertions(+), 2 deletions(-)

diff --git a/internal/atlas/image.go b/internal/atlas/image.go
index 912b4b602..ccb20e0cb 100644
--- a/internal/atlas/image.go
+++ b/internal/atlas/image.go
@@ -547,7 +547,10 @@ func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, pixels []byte
 		ch := make(chan error)
 		deferredM.Lock()
 		deferred = append(deferred, func() {
-			ch <- i.readPixels(graphicsDriver, pixels, region)
+			if err := i.readPixels(graphicsDriver, pixels, region); err != nil {
+				ch <- err
+			}
+			close(ch)
 		})
 		deferredM.Unlock()
 		return ch
@@ -558,7 +561,10 @@ func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, pixels []byte
 	flushDeferred()
 
 	ch := make(chan error, 1)
-	ch <- i.readPixels(graphicsDriver, pixels, region)
+	if err := i.readPixels(graphicsDriver, pixels, region); err != nil {
+		ch <- err
+	}
+	close(ch)
 	return ch
 }