New issue
Advanced search Search tips

Issue 669691 link

Starred by 2 users
Status: Assigned
Owner:
boliu@chromium.org
Cc:
cbruni@chromium.org
piman@chromium.org
EstimatedDays: ----
NextAction: ----
OS: Android
Pri: 2
Type: Bug



Sign in to add a comment

Compositing artifacts on Android while scrolling WebGL page

Project Member Reported by kainino@chromium.org, Nov 29 2016 
Version: Canary 57.0.2936.0
OS: Android 6.0.1 on 5X

What steps will reproduce the problem?
(1) Open http://get.webgl.org
(2) Switch to "request desktop site" (this is necessary only to make the page scrollable)
(3) Scroll around the page such that the omnibox slides on and off the screen

What is the expected result?
No artifacts.

What happens instead?
Bits of the omnibox show up all over the page being composited.

I attached a screenshot of a frame of a video I took of the bug. Couldn't get a proper screenshot. I don't think it's actually transparent like it looks in this image - I think that's just 2 frames blended together by the camera.
screenshot_of_frame_of_video_of_bug.png
821 KB View Download

Comment 1 by danakj@chromium.org, Nov 29 2016

Cc: piman@chromium.org
Components: -Internals>Compositing>Ubercomp
Owner: boliu@chromium.org
The android omnibox isn't composited so uh...

Comment 2 by rsgav...@chromium.org, Jan 25 2017

Status: Assigned (was: Untriaged)

Comment 3 by cbruni@chromium.org, Mar 28 2017

Labels: M-57 M-56 M-59 M-58
I have seen the same artifacts on my Nexus 5X, looks like 

Versions: both 56.0.2924.87 (32-bit), 59.0.3050.4 (32-bit) 
OS: Android 7.1.2 on Nexus 5X

Steps:
1. Open http://www.sueddeutsche.de/leben/momentaufnahmen-im-maerz-bilder-des-tages-1.3401188 (stage 0.png)
2. Flick images to the left, after 15 or so artifacts start to appear (stage 1.png), up to the point where nothing gets rendered anymore (stage 2.png).
stage 0.png
440 KB View Download
stage 1.png
483 KB View Download
stage 2.png
215 KB View Download

Comment 4 by cbruni@chromium.org, Mar 28 2017

Cc: cbruni@chromium.org
►

Sign in to add a comment