From c3c5a58f654537059366ecd3fe9811716bc202d2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Tor=20Arne=20Vestb=C3=B8?= <torarnv@gmail.com>
Date: Mon, 10 Feb 2020 21:55:55 +0100
Subject: macOS: Tag sub-layer images with color space on flush

Failing to tag the image results in costly CPU-based color-space
conversions.

Change-Id: Ib65547f4b99b83e10d3603c27388f50eb4d3840c
Reviewed-by: Timur Pocheptsov <timur.pocheptsov@qt.io>
---
 src/plugins/platforms/cocoa/qcocoabackingstore.mm | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

(limited to 'src/plugins/platforms/cocoa')

diff --git a/src/plugins/platforms/cocoa/qcocoabackingstore.mm b/src/plugins/platforms/cocoa/qcocoabackingstore.mm
index 2e15d11564..cb019c3775 100644
--- a/src/plugins/platforms/cocoa/qcocoabackingstore.mm
+++ b/src/plugins/platforms/cocoa/qcocoabackingstore.mm
@@ -574,7 +574,8 @@ void QCALayerBackingStore::flush(QWindow *flushedWindow, const QRegion &region,
 
         qCInfo(lcQpaBackingStore) << "Flushing" << subImage
             << "to" << flushedView.layer << "of subview" << flushedView;
-        QCFType<CGImageRef> cgImage = subImage.toCGImage();
+        QCFType<CGImageRef> cgImage = CGImageCreateCopyWithColorSpace(
+            QCFType<CGImageRef>(subImage.toCGImage()), colorSpace());
         flushedView.layer.contents = (__bridge id)static_cast<CGImageRef>(cgImage);
     }
 
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