Bug 242669 - REGRESSION (iOS 16 beta) canvas.getContext('2d').drawImage() returns black image
Summary: REGRESSION (iOS 16 beta) canvas.getContext('2d').drawImage() returns black image
Status: RESOLVED CONFIGURATION CHANGED
Alias: None
Product: WebKit
Classification: Unclassified
Component: WebRTC (show other bugs)
Version: Safari Technology Preview
Hardware: iPhone / iPad Other
: P2 Normal
Assignee: Nobody
URL:
Keywords: InRadar
Depends on:
Blocks:
 
Reported: 2022-07-12 18:04 PDT by Brian Z
Modified: 2022-08-17 02:16 PDT (History)
3 users (show)

See Also:

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Description Brian Z 2022-07-12 18:04:46 PDT 
# Tested devices:
Bug is reproducible on:
-iPhone XS | iOS 16 Beta

Bug is NOT reproducible on:

-iPhone X | iOS 15.5

# Scenario:
- Safari browser is opened for the iOS User
- Safari tab is open to https://webrtc.github.io/samples/src/content/getusermedia/canvas/
- Grant camera permission
- The bottom canvas is initialized to a grey background
- Press "Take snapshot"
- The bottom canvas shows a completely black image

Expected behavior:
The bottom canvas shows a screen capture of the video feed
Comment 1 Brian Z 2022-07-12 18:09:08 PDT 
Another url that can be used to reproduce the bug: https://storage.googleapis.com/tfjs-models/demos/facemesh/index.html

Error behavior:
<canvas id="output" width="500" height="500"></canvas> element in the top-left corner shows a black box

Expected behavior:
the canvas element should show the camera feed with a face mesh overlay

Console errors:
none
Comment 2 youenn fablet 2022-07-13 00:57:25 PDT 
Which beta is it? Is it the latest one?
Comment 3 Brian Z 2022-07-13 10:00:50 PDT 
I was testing on 16 beta 2. I just downloaded 16 beta 3 and can test that today
Comment 4 Radar WebKit Bug Importer 2022-07-13 13:38:08 PDT 
<rdar://problem/96970828>
Comment 5 Mike Wyrzykowski 2022-07-14 15:19:19 PDT 
This appears resolved on the public seed, I am not able to reproduce.
Comment 6 Brian Z 2022-07-15 14:46:30 PDT 
Yup, can confirm it's been fixed in iOS 16 beta 3 — thanks for the hard work!