From fc74a96f37717ddf440aba6db6bc231e0443b33a Mon Sep 17 00:00:00 2001
From: Harry Terkelsen <hterkelsen@users.noreply.github.com>
Date: Wed, 8 Apr 2020 11:55:23 -0700
Subject: [PATCH] Do not enable antialiasing by default in CanvasKit mode
 (flutter/engine#17534)

* Do not enable antialiasing by default in CanvasKit mode

* Add comment
---
 .../lib/web_ui/lib/src/engine/compositor/surface.dart     | 8 ++++++--
 1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/engine/src/flutter/lib/web_ui/lib/src/engine/compositor/surface.dart b/engine/src/flutter/lib/web_ui/lib/src/engine/compositor/surface.dart
index 20f6bfe5532..3f8a2c78804 100644
--- a/engine/src/flutter/lib/web_ui/lib/src/engine/compositor/surface.dart
+++ b/engine/src/flutter/lib/web_ui/lib/src/engine/compositor/surface.dart
@@ -114,8 +114,12 @@ class Surface {
       ..position = 'absolute'
       ..width = '${logicalSize.width.ceil()}px'
       ..height = '${logicalSize.height.ceil()}px';
-    final int glContext = canvasKit
-        .callMethod('GetWebGLContext', <html.CanvasElement>[htmlCanvas]);
+    final int glContext = canvasKit.callMethod('GetWebGLContext', <dynamic>[
+      htmlCanvas,
+      // Default to no anti-aliasing. Paint commands can be explicitly
+      // anti-aliased by setting their `Paint` object's `antialias` property.
+      js.JsObject.jsify({'antialias': 0}),
+    ]);
     final js.JsObject grContext =
         canvasKit.callMethod('MakeGrContext', <dynamic>[glContext]);
     final js.JsObject skSurface =