From 4887288ae67c3ddf559999d1d45702da53d4f18a Mon Sep 17 00:00:00 2001
From: Jeremy Wiebe <jeremy@khanacademy.org>
Date: Fri, 25 Feb 2022 14:59:13 -0800
Subject: [PATCH] Add crossOrigin attribute to <img /> element used to load
 images

---
 processing.js | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/processing.js b/processing.js
index d2d5d4621..808dd70e9 100755
--- a/processing.js
+++ b/processing.js
@@ -14932,6 +14932,11 @@
       pimg = new PImage();
       var img = document.createElement('img');
 
+      // Fixes a security error when we attempt to extract image data from this
+      // canvas.
+      // https://developer.mozilla.org/en-US/docs/Web/API/HTMLImageElement/crossOrigin
+      img.crossOrigin = "anonymous";
+
       pimg.sourceImg = img;
 
       img.onload = (function(aImage, aPImage, aCallback) {