From 74f48cd5546f695c552f05dc5214c40408017854 Mon Sep 17 00:00:00 2001
From: Ferhat <ferhat@gmail.com>
Date: Wed, 8 Jan 2020 17:52:29 -0800
Subject: [PATCH] Fix devicepixel ratio reset problem when replaying clip stack
 (#15327)

* Fix devicepixel ratio reset problem when replaying clip stack
* Simplify setTransform
---
 lib/web_ui/lib/src/engine/canvas_pool.dart | 4 +++-
 1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/lib/web_ui/lib/src/engine/canvas_pool.dart b/lib/web_ui/lib/src/engine/canvas_pool.dart
index 61ba362d7..02489f3bb 100644
--- a/lib/web_ui/lib/src/engine/canvas_pool.dart
+++ b/lib/web_ui/lib/src/engine/canvas_pool.dart
@@ -140,7 +140,9 @@ class _CanvasPool extends _SaveStackTracking {
       int clipDepth, Matrix4 transform, List<_SaveClipEntry> clipStack) {
     final html.CanvasRenderingContext2D ctx = _context;
     if (!transform.isIdentity()) {
-      ctx.setTransform(transform[0], transform[1], transform[4], transform[5],
+      final double ratio = EngineWindow.browserDevicePixelRatio;
+      ctx.setTransform(ratio, 0, 0, ratio, 0, 0);
+      ctx.transform(transform[0], transform[1], transform[4], transform[5],
           transform[12], transform[13]);
     }
     if (clipStack != null) {
-- 
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