628814 - Rendering artifacts when injecting text runs before audio controls after audio throbber hides

Status: RESOLVED WORKSFORME

(Core :: Graphics, defect)

Description

[Chris Pearce [:cpearce (Not reading bugmail)]]

Attachment: Testcase, load to reproduce

When you inject text runs before an audio element after it has shown and then hidden its throbber, then when the audio element gets "pushed down" to accommodate the new text run, the video's current time leaves behind an artifact. I'll attach a screenshot.

STR: Load attached testcase.

If I minimize and restore the window, the rendering artifacts go away.

Mozilla/5.0 (Windows NT 6.1; WOW64; rv:2.0b10pre) Gecko/20110120 Firefox/4.0b10pre

Adapter Description NVIDIA NVS 3100M
Vendor ID 10de
Device ID 0a6c
Adapter RAM 512
Adapter Drivers nvd3dumx,nvwgf2umx,nvwgf2umx nvd3dum,nvwgf2um,nvwgf2um
Driver Version 8.17.12.5738
Driver Date 6-27-2010
Direct2D Enabled true
DirectWrite Enabled true (6.1.7600.20830)
WebGL Renderer TransGaming Inc. -- ANGLE -- OpenGL ES 2.0 (git-devel Jan 20 2011 03:40:10)GPU Accelerated Windows 3/3 Direct3D 10

Comment 1

[Chris Pearce [:cpearce (Not reading bugmail)]]

Attachment: Screenshot

Comment 2

[juan becerra [:juanb]]

This also happens on Mac 10.6 and Linux (the two other machines I tried). In my case, just clicking on the page or scrolling made the artifacts go away.

Comment 3

[Chris Pearce [:cpearce (Not reading bugmail)]]

I can reproduce the bug with layers.acceleration.disabled=true as well.

Comment 4

[Chris Pearce [:cpearce (Not reading bugmail)]]

Regression range:

GOOD: Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20090913 Minefield/3.7a1pre
BAD:  Mozilla/5.0 (Windows; U; Windows NT 6.1; en-US; rv:1.9.3a1pre) Gecko/20090914 Minefield/3.7a1pre

Causing changeset should be in this range:
http://hg.mozilla.org/mozilla-central/pushloghtml?startdate=2009-09-13&enddate=2009-09-14+04

Comment 5

[Benoit Girard (:BenWa)]

Still in Aurora 9.0a2

Comment 6

[Cosmin Muntean [:cmuntean], Ecosystem QA]

Firefox: 50.0a1, Build ID: 20160616163918
User Agent: Mozilla/5.0 (Windows NT 6.1; Win64; x64; rv:50.0) Gecko/20100101 Firefox/50.0

I have tested this issue on the latest Firefox (47.0) release and latest Nightly (50.0a1) build, but I could not reproduce it. The video's current time does not leave behind an artifact when the hidden text appears.

Chris is this still reproducible on your end with the latest Firefox release or latest Nightly build?

Comment 7

[Chris Pearce [:cpearce (Not reading bugmail)]]

Works for me. :)

Thanks for following up Cosmin.