From f32648b1440adc4068222f4584983ea39510ed8a Mon Sep 17 00:00:00 2001
From: Hajime Hoshi <hajimehoshi@gmail.com>
Date: Sun, 8 Sep 2024 17:48:59 +0900
Subject: [PATCH] internal/restorable: skip adding stale regions when the image
 doesn't need to be restored

---
 internal/restorable/image.go | 6 +++++-
 1 file changed, 5 insertions(+), 1 deletion(-)

diff --git a/internal/restorable/image.go b/internal/restorable/image.go
index 85e5a0a7a..d30ef3cb8 100644
--- a/internal/restorable/image.go
+++ b/internal/restorable/image.go
@@ -233,6 +233,10 @@ func (i *Image) makeStale(rect image.Rectangle) {
 		return
 	}
 
+	if !i.needsRestoration() {
+		return
+	}
+
 	origSize := len(i.staleRegions)
 	i.staleRegions = i.appendRegionsForDrawTriangles(i.staleRegions)
 	if !rect.Empty() {
@@ -465,7 +469,7 @@ func (i *Image) readPixelsFromGPUIfNeeded(graphicsDriver graphicsdriver.Graphics
 }
 
 func (i *Image) ReadPixels(graphicsDriver graphicsdriver.Graphics, pixels []byte, region image.Rectangle) error {
-	if AlwaysReadPixelsFromGPU() {
+	if AlwaysReadPixelsFromGPU() || !i.needsRestoration() {
 		if err := i.image.ReadPixels(graphicsDriver, []graphicsdriver.PixelsArgs{
 			{
 				Pixels: pixels,